are name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  658.852012][ T5769] Call Trace:
[  658.855285][ T5769]  <TASK>
[  658.858215][ T5769]  dump_stack_lvl+0x168/0x22e
[  658.862889][ T5769]  ? show_regs_print_info+0x12/0x12
[  658.868088][ T5769]  ? load_image+0x3b0/0x3b0
[  658.872598][ T5769]  ? __lock_acquire+0x7c50/0x7c50
[  658.877647][ T5769]  should_fail_ex+0x399/0x4d0
[  658.882417][ T5769]  _copy_from_user+0x2c/0x170
[  658.887093][ T5769]  kstrtouint_from_user+0xbe/0x150
[  658.892201][ T5769]  ? kstrtol_from_user+0x150/0x150
[  658.897312][ T5769]  proc_fail_nth_write+0x85/0x1f0
[  658.902327][ T5769]  ? proc_fail_nth_read+0x210/0x210
[  658.907519][ T5769]  ? common_file_perm+0x171/0x1c0
[  658.912551][ T5769]  ? proc_fail_nth_read+0x210/0x210
[  658.917745][ T5769]  vfs_write+0x2c4/0x960
[  658.921989][ T5769]  ? file_end_write+0x250/0x250
[  658.926845][ T5769]  ? __fget_files+0x28/0x4d0
[  658.931429][ T5769]  ? __fget_files+0x44a/0x4d0
[  658.936190][ T5769]  ? __fdget_pos+0x2ae/0x360
[  658.940771][ T5769]  ? ksys_write+0x71/0x240
[  658.945182][ T5769]  ksys_write+0x143/0x240
[  658.949518][ T5769]  ? __ia32_sys_read+0x80/0x80
[  658.954276][ T5769]  ? lockdep_hardirqs_on+0x94/0x140
[  658.959570][ T5769]  do_syscall_64+0x4c/0xa0
[  658.963982][ T5769]  ? clear_bhb_loop+0x60/0xb0
[  658.968654][ T5769]  ? clear_bhb_loop+0x60/0xb0
[  658.973413][ T5769]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  658.979300][ T5769] RIP: 0033:0x7f07a958e1ff
[  658.983714][ T5769] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  659.003317][ T5769] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  659.011721][ T5769] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  659.019685][ T5769] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  659.027675][ T5769] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  659.035635][ T5769] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  659.043593][ T5769] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  659.051568][ T5769]  </TASK>
[  659.094829][ T5774] FAULT_INJECTION: forcing a failure.
[  659.094829][ T5774] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  659.108379][ T5774] CPU: 1 PID: 5774 Comm: syz.0.347 Not tainted syzkaller #0
[  659.115670][ T5774] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  659.125802][ T5774] Call Trace:
[  659.129068][ T5774]  <TASK>
[  659.131984][ T5774]  dump_stack_lvl+0x168/0x22e
[  659.136656][ T5774]  ? show_regs_print_info+0x12/0x12
[  659.141845][ T5774]  ? load_image+0x3b0/0x3b0
[  659.146367][ T5774]  ? __lock_acquire+0x7c50/0x7c50
[  659.151476][ T5774]  should_fail_ex+0x399/0x4d0
[  659.156163][ T5774]  _copy_from_user+0x2c/0x170
[  659.160837][ T5774]  kstrtouint_from_user+0xbe/0x150
[  659.165948][ T5774]  ? kstrtol_from_user+0x150/0x150
[  659.171066][ T5774]  proc_fail_nth_write+0x85/0x1f0
[  659.176081][ T5774]  ? proc_fail_nth_read+0x210/0x210
[  659.181344][ T5774]  ? common_file_perm+0x171/0x1c0
[  659.186360][ T5774]  ? proc_fail_nth_read+0x210/0x210
[  659.191539][ T5774]  vfs_write+0x2c4/0x960
[  659.195772][ T5774]  ? file_end_write+0x250/0x250
[  659.200612][ T5774]  ? __fget_files+0x28/0x4d0
[  659.205184][ T5774]  ? __fget_files+0x44a/0x4d0
[  659.209850][ T5774]  ? __fdget_pos+0x2ae/0x360
[  659.214423][ T5774]  ? ksys_write+0x71/0x240
[  659.218825][ T5774]  ksys_write+0x143/0x240
[  659.223186][ T5774]  ? __ia32_sys_read+0x80/0x80
[  659.227938][ T5774]  ? lockdep_hardirqs_on+0x94/0x140
[  659.233158][ T5774]  do_syscall_64+0x4c/0xa0
[  659.237563][ T5774]  ? clear_bhb_loop+0x60/0xb0
[  659.242248][ T5774]  ? clear_bhb_loop+0x60/0xb0
[  659.246913][ T5774]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  659.252804][ T5774] RIP: 0033:0x7f07a958e1ff
[  659.257205][ T5774] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  659.276801][ T5774] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  659.285204][ T5774] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  659.293158][ T5774] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  659.301111][ T5774] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  659.309068][ T5774] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  659.317027][ T5774] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  659.324992][ T5774]  </TASK>
[  659.357624][ T5779] FAULT_INJECTION: forcing a failure.
[  659.357624][ T5779] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  659.384555][ T5779] CPU: 1 PID: 5779 Comm: syz.0.348 Not tainted syzkaller #0
[  659.391855][ T5779] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  659.401912][ T5779] Call Trace:
[  659.405184][ T5779]  <TASK>
[  659.408118][ T5779]  dump_stack_lvl+0x168/0x22e
[  659.412826][ T5779]  ? show_regs_print_info+0x12/0x12
[  659.418082][ T5779]  ? load_image+0x3b0/0x3b0
[  659.422585][ T5779]  ? __lock_acquire+0x7c50/0x7c50
[  659.427610][ T5779]  should_fail_ex+0x399/0x4d0
[  659.432283][ T5779]  _copy_from_user+0x2c/0x170
[  659.436956][ T5779]  kstrtouint_from_user+0xbe/0x150
[  659.442053][ T5779]  ? kstrtol_from_user+0x150/0x150
[  659.447172][ T5779]  proc_fail_nth_write+0x85/0x1f0
[  659.452206][ T5779]  ? proc_fail_nth_read+0x210/0x210
[  659.457394][ T5779]  ? common_file_perm+0x171/0x1c0
[  659.462417][ T5779]  ? proc_fail_nth_read+0x210/0x210
[  659.467607][ T5779]  vfs_write+0x2c4/0x960
[  659.471848][ T5779]  ? file_end_write+0x250/0x250
[  659.476698][ T5779]  ? __fget_files+0x28/0x4d0
[  659.481283][ T5779]  ? __fget_files+0x44a/0x4d0
[  659.485980][ T5779]  ? __fdget_pos+0x2ae/0x360
[  659.490565][ T5779]  ? ksys_write+0x71/0x240
[  659.494976][ T5779]  ksys_write+0x143/0x240
[  659.499302][ T5779]  ? __ia32_sys_read+0x80/0x80
[  659.504074][ T5779]  ? lockdep_hardirqs_on+0x94/0x140
[  659.509274][ T5779]  do_syscall_64+0x4c/0xa0
[  659.513694][ T5779]  ? clear_bhb_loop+0x60/0xb0
[  659.518364][ T5779]  ? clear_bhb_loop+0x60/0xb0
[  659.523291][ T5779]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  659.529174][ T5779] RIP: 0033:0x7f07a958e1ff
[  659.533580][ T5779] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  659.553192][ T5779] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  659.561627][ T5779] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  659.569600][ T5779] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  659.577564][ T5779] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  659.585523][ T5779] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  659.593482][ T5779] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  659.601455][ T5779]  </TASK>
[  659.655834][ T5784] FAULT_INJECTION: forcing a failure.
[  659.655834][ T5784] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  659.670208][ T5784] CPU: 0 PID: 5784 Comm: syz.0.349 Not tainted syzkaller #0
[  659.677504][ T5784] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  659.687556][ T5784] Call Trace:
[  659.690824][ T5784]  <TASK>
[  659.693739][ T5784]  dump_stack_lvl+0x168/0x22e
[  659.698409][ T5784]  ? show_regs_print_info+0x12/0x12
[  659.703695][ T5784]  ? load_image+0x3b0/0x3b0
[  659.708191][ T5784]  ? __lock_acquire+0x7c50/0x7c50
[  659.713203][ T5784]  should_fail_ex+0x399/0x4d0
[  659.717875][ T5784]  _copy_from_user+0x2c/0x170
[  659.722555][ T5784]  kstrtouint_from_user+0xbe/0x150
[  659.727653][ T5784]  ? kstrtol_from_user+0x150/0x150
[  659.732759][ T5784]  proc_fail_nth_write+0x85/0x1f0
[  659.737768][ T5784]  ? proc_fail_nth_read+0x210/0x210
[  659.742952][ T5784]  ? common_file_perm+0x171/0x1c0
[  659.747978][ T5784]  ? proc_fail_nth_read+0x210/0x210
[  659.753169][ T5784]  vfs_write+0x2c4/0x960
[  659.757408][ T5784]  ? file_end_write+0x250/0x250
[  659.762250][ T5784]  ? __fget_files+0x28/0x4d0
[  659.766835][ T5784]  ? __fget_files+0x44a/0x4d0
[  659.771506][ T5784]  ? __fdget_pos+0x2ae/0x360
[  659.776085][ T5784]  ? ksys_write+0x71/0x240
[  659.780500][ T5784]  ksys_write+0x143/0x240
[  659.784829][ T5784]  ? __ia32_sys_read+0x80/0x80
[  659.789590][ T5784]  ? lockdep_hardirqs_on+0x94/0x140
[  659.794785][ T5784]  do_syscall_64+0x4c/0xa0
[  659.799196][ T5784]  ? clear_bhb_loop+0x60/0xb0
[  659.803865][ T5784]  ? clear_bhb_loop+0x60/0xb0
[  659.808530][ T5784]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  659.814417][ T5784] RIP: 0033:0x7f07a958e1ff
[  659.818823][ T5784] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  659.838419][ T5784] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  659.846846][ T5784] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  659.854805][ T5784] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  659.862764][ T5784] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  659.870724][ T5784] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  659.878685][ T5784] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  659.886746][ T5784]  </TASK>
[  659.926084][ T5787] FAULT_INJECTION: forcing a failure.
[  659.926084][ T5787] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  659.939800][ T5787] CPU: 0 PID: 5787 Comm: syz.0.350 Not tainted syzkaller #0
[  659.947085][ T5787] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  659.957130][ T5787] Call Trace:
[  659.960395][ T5787]  <TASK>
[  659.963314][ T5787]  dump_stack_lvl+0x168/0x22e
[  659.967991][ T5787]  ? show_regs_print_info+0x12/0x12
[  659.973183][ T5787]  ? load_image+0x3b0/0x3b0
[  659.977677][ T5787]  ? __lock_acquire+0x7c50/0x7c50
[  659.982718][ T5787]  should_fail_ex+0x399/0x4d0
[  659.987393][ T5787]  _copy_from_user+0x2c/0x170
[  659.992062][ T5787]  kstrtouint_from_user+0xbe/0x150
[  659.997349][ T5787]  ? kstrtol_from_user+0x150/0x150
[  660.002466][ T5787]  proc_fail_nth_write+0x85/0x1f0
[  660.007482][ T5787]  ? proc_fail_nth_read+0x210/0x210
[  660.012669][ T5787]  ? common_file_perm+0x171/0x1c0
[  660.017704][ T5787]  ? proc_fail_nth_read+0x210/0x210
[  660.022893][ T5787]  vfs_write+0x2c4/0x960
[  660.027134][ T5787]  ? file_end_write+0x250/0x250
[  660.031980][ T5787]  ? __fget_files+0x28/0x4d0
[  660.036576][ T5787]  ? __fget_files+0x44a/0x4d0
[  660.041250][ T5787]  ? __fdget_pos+0x2ae/0x360
[  660.045830][ T5787]  ? ksys_write+0x71/0x240
[  660.050239][ T5787]  ksys_write+0x143/0x240
[  660.054567][ T5787]  ? __ia32_sys_read+0x80/0x80
[  660.059326][ T5787]  ? lockdep_hardirqs_on+0x94/0x140
[  660.064516][ T5787]  do_syscall_64+0x4c/0xa0
[  660.068929][ T5787]  ? clear_bhb_loop+0x60/0xb0
[  660.073601][ T5787]  ? clear_bhb_loop+0x60/0xb0
[  660.078272][ T5787]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  660.084158][ T5787] RIP: 0033:0x7f07a958e1ff
[  660.088563][ T5787] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  660.108164][ T5787] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  660.116567][ T5787] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  660.124528][ T5787] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  660.132487][ T5787] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  660.140445][ T5787] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  660.148403][ T5787] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  660.156381][ T5787]  </TASK>
[  660.193001][ T5790] FAULT_INJECTION: forcing a failure.
[  660.193001][ T5790] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  660.207096][ T5790] CPU: 0 PID: 5790 Comm: syz.0.351 Not tainted syzkaller #0
[  660.214390][ T5790] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  660.224442][ T5790] Call Trace:
[  660.227705][ T5790]  <TASK>
[  660.230617][ T5790]  dump_stack_lvl+0x168/0x22e
[  660.235289][ T5790]  ? show_regs_print_info+0x12/0x12
[  660.240473][ T5790]  ? load_image+0x3b0/0x3b0
[  660.244963][ T5790]  ? __lock_acquire+0x7c50/0x7c50
[  660.249975][ T5790]  should_fail_ex+0x399/0x4d0
[  660.254697][ T5790]  _copy_from_user+0x2c/0x170
[  660.259354][ T5790]  kstrtouint_from_user+0xbe/0x150
[  660.264460][ T5790]  ? kstrtol_from_user+0x150/0x150
[  660.269567][ T5790]  proc_fail_nth_write+0x85/0x1f0
[  660.274576][ T5790]  ? proc_fail_nth_read+0x210/0x210
[  660.279754][ T5790]  ? common_file_perm+0x171/0x1c0
[  660.284766][ T5790]  ? proc_fail_nth_read+0x210/0x210
[  660.289945][ T5790]  vfs_write+0x2c4/0x960
[  660.294175][ T5790]  ? file_end_write+0x250/0x250
[  660.299014][ T5790]  ? __fget_files+0x28/0x4d0
[  660.303589][ T5790]  ? __fget_files+0x44a/0x4d0
[  660.308254][ T5790]  ? __fdget_pos+0x2ae/0x360
[  660.312837][ T5790]  ? ksys_write+0x71/0x240
[  660.317253][ T5790]  ksys_write+0x143/0x240
[  660.321585][ T5790]  ? __ia32_sys_read+0x80/0x80
[  660.326346][ T5790]  ? lockdep_hardirqs_on+0x94/0x140
[  660.331537][ T5790]  do_syscall_64+0x4c/0xa0
[  660.335955][ T5790]  ? clear_bhb_loop+0x60/0xb0
[  660.340716][ T5790]  ? clear_bhb_loop+0x60/0xb0
[  660.345398][ T5790]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  660.351496][ T5790] RIP: 0033:0x7f07a958e1ff
[  660.355941][ T5790] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  660.375550][ T5790] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  660.384147][ T5790] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  660.392135][ T5790] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  660.400101][ T5790] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  660.408063][ T5790] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  660.416027][ T5790] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  660.424003][ T5790]  </TASK>
[  660.434789][ T5791] ttyS ttyS3: ldisc open failed (-12), clearing slot 3
[  660.474954][ T5794] FAULT_INJECTION: forcing a failure.
[  660.474954][ T5794] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  660.488136][ T5794] CPU: 0 PID: 5794 Comm: syz.0.352 Not tainted syzkaller #0
[  660.495414][ T5794] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  660.505466][ T5794] Call Trace:
[  660.508741][ T5794]  <TASK>
[  660.511678][ T5794]  dump_stack_lvl+0x168/0x22e
[  660.516379][ T5794]  ? show_regs_print_info+0x12/0x12
[  660.521584][ T5794]  ? load_image+0x3b0/0x3b0
[  660.526107][ T5794]  ? __lock_acquire+0x7c50/0x7c50
[  660.531155][ T5794]  should_fail_ex+0x399/0x4d0
[  660.535856][ T5794]  _copy_from_user+0x2c/0x170
[  660.540545][ T5794]  kstrtouint_from_user+0xbe/0x150
[  660.545685][ T5794]  ? kstrtol_from_user+0x150/0x150
[  660.550808][ T5794]  proc_fail_nth_write+0x85/0x1f0
[  660.555846][ T5794]  ? proc_fail_nth_read+0x210/0x210
[  660.561047][ T5794]  ? common_file_perm+0x171/0x1c0
[  660.566082][ T5794]  ? proc_fail_nth_read+0x210/0x210
[  660.571278][ T5794]  vfs_write+0x2c4/0x960
[  660.575519][ T5794]  ? file_end_write+0x250/0x250
[  660.580358][ T5794]  ? __fget_files+0x28/0x4d0
[  660.584936][ T5794]  ? __fget_files+0x44a/0x4d0
[  660.589602][ T5794]  ? __fdget_pos+0x2ae/0x360
[  660.594190][ T5794]  ? ksys_write+0x71/0x240
[  660.598610][ T5794]  ksys_write+0x143/0x240
[  660.602946][ T5794]  ? __ia32_sys_read+0x80/0x80
[  660.607717][ T5794]  ? lockdep_hardirqs_on+0x94/0x140
[  660.612901][ T5794]  do_syscall_64+0x4c/0xa0
[  660.617304][ T5794]  ? clear_bhb_loop+0x60/0xb0
[  660.621969][ T5794]  ? clear_bhb_loop+0x60/0xb0
[  660.626631][ T5794]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  660.632513][ T5794] RIP: 0033:0x7f07a958e1ff
[  660.636916][ T5794] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  660.656516][ T5794] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  660.664917][ T5794] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  660.672881][ T5794] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  660.680834][ T5794] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  660.688789][ T5794] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  660.696743][ T5794] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  660.704710][ T5794]  </TASK>
[  660.738858][ T5799] FAULT_INJECTION: forcing a failure.
[  660.738858][ T5799] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  660.752031][ T5799] CPU: 0 PID: 5799 Comm: syz.0.353 Not tainted syzkaller #0
[  660.759309][ T5799] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  660.769356][ T5799] Call Trace:
[  660.772619][ T5799]  <TASK>
[  660.775542][ T5799]  dump_stack_lvl+0x168/0x22e
[  660.780211][ T5799]  ? show_regs_print_info+0x12/0x12
[  660.785397][ T5799]  ? load_image+0x3b0/0x3b0
[  660.789888][ T5799]  ? __lock_acquire+0x7c50/0x7c50
[  660.794905][ T5799]  should_fail_ex+0x399/0x4d0
[  660.799577][ T5799]  _copy_from_user+0x2c/0x170
[  660.804253][ T5799]  kstrtouint_from_user+0xbe/0x150
[  660.809387][ T5799]  ? kstrtol_from_user+0x150/0x150
[  660.814496][ T5799]  proc_fail_nth_write+0x85/0x1f0
[  660.819504][ T5799]  ? proc_fail_nth_read+0x210/0x210
[  660.824686][ T5799]  ? common_file_perm+0x171/0x1c0
[  660.829697][ T5799]  ? proc_fail_nth_read+0x210/0x210
[  660.834876][ T5799]  vfs_write+0x2c4/0x960
[  660.839108][ T5799]  ? file_end_write+0x250/0x250
[  660.843946][ T5799]  ? __fget_files+0x28/0x4d0
[  660.848531][ T5799]  ? __fget_files+0x44a/0x4d0
[  660.853195][ T5799]  ? __fdget_pos+0x2ae/0x360
[  660.857771][ T5799]  ? ksys_write+0x71/0x240
[  660.862176][ T5799]  ksys_write+0x143/0x240
[  660.866493][ T5799]  ? __ia32_sys_read+0x80/0x80
[  660.871245][ T5799]  ? lockdep_hardirqs_on+0x94/0x140
[  660.876427][ T5799]  do_syscall_64+0x4c/0xa0
[  660.880829][ T5799]  ? clear_bhb_loop+0x60/0xb0
[  660.885491][ T5799]  ? clear_bhb_loop+0x60/0xb0
[  660.890152][ T5799]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  660.896026][ T5799] RIP: 0033:0x7f07a958e1ff
[  660.900432][ T5799] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  660.920120][ T5799] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  660.928520][ T5799] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  660.936502][ T5799] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  660.944456][ T5799] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  660.952408][ T5799] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  660.960369][ T5799] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  660.968336][ T5799]  </TASK>
[  660.997824][ T5801] FAULT_INJECTION: forcing a failure.
[  660.997824][ T5801] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  661.011868][ T5801] CPU: 1 PID: 5801 Comm: syz.0.354 Not tainted syzkaller #0
[  661.019175][ T5801] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  661.029241][ T5801] Call Trace:
[  661.032510][ T5801]  <TASK>
[  661.035429][ T5801]  dump_stack_lvl+0x168/0x22e
[  661.040096][ T5801]  ? show_regs_print_info+0x12/0x12
[  661.045289][ T5801]  ? load_image+0x3b0/0x3b0
[  661.049811][ T5801]  ? __lock_acquire+0x7c50/0x7c50
[  661.054856][ T5801]  should_fail_ex+0x399/0x4d0
[  661.059536][ T5801]  _copy_from_user+0x2c/0x170
[  661.064210][ T5801]  kstrtouint_from_user+0xbe/0x150
[  661.069338][ T5801]  ? kstrtol_from_user+0x150/0x150
[  661.074564][ T5801]  proc_fail_nth_write+0x85/0x1f0
[  661.079604][ T5801]  ? proc_fail_nth_read+0x210/0x210
[  661.084805][ T5801]  ? common_file_perm+0x171/0x1c0
[  661.089835][ T5801]  ? proc_fail_nth_read+0x210/0x210
[  661.095027][ T5801]  vfs_write+0x2c4/0x960
[  661.099265][ T5801]  ? file_end_write+0x250/0x250
[  661.104116][ T5801]  ? __fget_files+0x28/0x4d0
[  661.108710][ T5801]  ? __fget_files+0x44a/0x4d0
[  661.113380][ T5801]  ? __fdget_pos+0x2ae/0x360
[  661.117974][ T5801]  ? ksys_write+0x71/0x240
[  661.122397][ T5801]  ksys_write+0x143/0x240
[  661.126724][ T5801]  ? __ia32_sys_read+0x80/0x80
[  661.131482][ T5801]  ? lockdep_hardirqs_on+0x94/0x140
[  661.136675][ T5801]  do_syscall_64+0x4c/0xa0
[  661.141082][ T5801]  ? clear_bhb_loop+0x60/0xb0
[  661.145747][ T5801]  ? clear_bhb_loop+0x60/0xb0
[  661.150414][ T5801]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  661.156299][ T5801] RIP: 0033:0x7f07a958e1ff
[  661.160702][ T5801] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  661.180390][ T5801] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  661.188798][ T5801] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  661.196762][ T5801] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  661.204728][ T5801] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  661.212700][ T5801] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  661.220666][ T5801] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  661.228637][ T5801]  </TASK>
[  661.261458][ T5806] FAULT_INJECTION: forcing a failure.
[  661.261458][ T5806] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  661.275338][ T5806] CPU: 0 PID: 5806 Comm: syz.0.355 Not tainted syzkaller #0
[  661.282632][ T5806] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  661.292677][ T5806] Call Trace:
[  661.295945][ T5806]  <TASK>
[  661.298868][ T5806]  dump_stack_lvl+0x168/0x22e
[  661.303536][ T5806]  ? show_regs_print_info+0x12/0x12
[  661.308720][ T5806]  ? load_image+0x3b0/0x3b0
[  661.313228][ T5806]  ? __lock_acquire+0x7c50/0x7c50
[  661.318274][ T5806]  should_fail_ex+0x399/0x4d0
[  661.322956][ T5806]  _copy_from_user+0x2c/0x170
[  661.327723][ T5806]  kstrtouint_from_user+0xbe/0x150
[  661.332831][ T5806]  ? kstrtol_from_user+0x150/0x150
[  661.337950][ T5806]  proc_fail_nth_write+0x85/0x1f0
[  661.343005][ T5806]  ? proc_fail_nth_read+0x210/0x210
[  661.348210][ T5806]  ? common_file_perm+0x171/0x1c0
[  661.353240][ T5806]  ? proc_fail_nth_read+0x210/0x210
[  661.358443][ T5806]  vfs_write+0x2c4/0x960
[  661.362695][ T5806]  ? file_end_write+0x250/0x250
[  661.367548][ T5806]  ? __fget_files+0x28/0x4d0
[  661.372152][ T5806]  ? __fget_files+0x44a/0x4d0
[  661.376825][ T5806]  ? __fdget_pos+0x2ae/0x360
[  661.381408][ T5806]  ? ksys_write+0x71/0x240
[  661.385820][ T5806]  ksys_write+0x143/0x240
[  661.390148][ T5806]  ? __ia32_sys_read+0x80/0x80
[  661.394902][ T5806]  ? lockdep_hardirqs_on+0x94/0x140
[  661.400103][ T5806]  do_syscall_64+0x4c/0xa0
[  661.404513][ T5806]  ? clear_bhb_loop+0x60/0xb0
[  661.409204][ T5806]  ? clear_bhb_loop+0x60/0xb0
[  661.413881][ T5806]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  661.419764][ T5806] RIP: 0033:0x7f07a958e1ff
[  661.424176][ T5806] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  661.443780][ T5806] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  661.452199][ T5806] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  661.460169][ T5806] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  661.468129][ T5806] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  661.476097][ T5806] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  661.484068][ T5806] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  661.492052][ T5806]  </TASK>
[  661.522777][ T5811] FAULT_INJECTION: forcing a failure.
[  661.522777][ T5811] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  661.536303][ T5811] CPU: 0 PID: 5811 Comm: syz.0.356 Not tainted syzkaller #0
[  661.543613][ T5811] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  661.553672][ T5811] Call Trace:
[  661.556956][ T5811]  <TASK>
[  661.559879][ T5811]  dump_stack_lvl+0x168/0x22e
[  661.564561][ T5811]  ? show_regs_print_info+0x12/0x12
[  661.569752][ T5811]  ? load_image+0x3b0/0x3b0
[  661.574245][ T5811]  ? __lock_acquire+0x7c50/0x7c50
[  661.579259][ T5811]  should_fail_ex+0x399/0x4d0
[  661.583929][ T5811]  _copy_from_user+0x2c/0x170
[  661.588597][ T5811]  kstrtouint_from_user+0xbe/0x150
[  661.593699][ T5811]  ? kstrtol_from_user+0x150/0x150
[  661.598822][ T5811]  proc_fail_nth_write+0x85/0x1f0
[  661.603836][ T5811]  ? proc_fail_nth_read+0x210/0x210
[  661.609014][ T5811]  ? common_file_perm+0x171/0x1c0
[  661.614026][ T5811]  ? proc_fail_nth_read+0x210/0x210
[  661.619204][ T5811]  vfs_write+0x2c4/0x960
[  661.623431][ T5811]  ? file_end_write+0x250/0x250
[  661.628273][ T5811]  ? __fget_files+0x28/0x4d0
[  661.632851][ T5811]  ? __fget_files+0x44a/0x4d0
[  661.637516][ T5811]  ? __fdget_pos+0x2ae/0x360
[  661.642084][ T5811]  ? ksys_write+0x71/0x240
[  661.646493][ T5811]  ksys_write+0x143/0x240
[  661.650822][ T5811]  ? __ia32_sys_read+0x80/0x80
[  661.655587][ T5811]  ? lockdep_hardirqs_on+0x94/0x140
[  661.660775][ T5811]  do_syscall_64+0x4c/0xa0
[  661.665193][ T5811]  ? clear_bhb_loop+0x60/0xb0
[  661.669860][ T5811]  ? clear_bhb_loop+0x60/0xb0
[  661.674529][ T5811]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  661.680413][ T5811] RIP: 0033:0x7f07a958e1ff
[  661.684819][ T5811] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  661.704417][ T5811] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  661.712819][ T5811] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  661.720783][ T5811] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  661.728747][ T5811] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  661.736715][ T5811] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  661.744676][ T5811] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  661.752650][ T5811]  </TASK>
[  661.791048][ T5813] FAULT_INJECTION: forcing a failure.
[  661.791048][ T5813] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  661.805235][ T5813] CPU: 0 PID: 5813 Comm: syz.0.357 Not tainted syzkaller #0
[  661.812536][ T5813] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  661.822580][ T5813] Call Trace:
[  661.825847][ T5813]  <TASK>
[  661.828765][ T5813]  dump_stack_lvl+0x168/0x22e
[  661.833437][ T5813]  ? show_regs_print_info+0x12/0x12
[  661.838640][ T5813]  ? load_image+0x3b0/0x3b0
[  661.843126][ T5813]  ? __lock_acquire+0x7c50/0x7c50
[  661.848138][ T5813]  should_fail_ex+0x399/0x4d0
[  661.852804][ T5813]  _copy_from_user+0x2c/0x170
[  661.857477][ T5813]  kstrtouint_from_user+0xbe/0x150
[  661.862585][ T5813]  ? kstrtol_from_user+0x150/0x150
[  661.867694][ T5813]  proc_fail_nth_write+0x85/0x1f0
[  661.872703][ T5813]  ? proc_fail_nth_read+0x210/0x210
[  661.877882][ T5813]  ? common_file_perm+0x171/0x1c0
[  661.882893][ T5813]  ? proc_fail_nth_read+0x210/0x210
[  661.888074][ T5813]  vfs_write+0x2c4/0x960
[  661.892390][ T5813]  ? file_end_write+0x250/0x250
[  661.897225][ T5813]  ? __fget_files+0x28/0x4d0
[  661.901799][ T5813]  ? __fget_files+0x44a/0x4d0
[  661.906472][ T5813]  ? __fdget_pos+0x2ae/0x360
[  661.911061][ T5813]  ? ksys_write+0x71/0x240
[  661.915474][ T5813]  ksys_write+0x143/0x240
[  661.919801][ T5813]  ? __ia32_sys_read+0x80/0x80
[  661.924568][ T5813]  ? lockdep_hardirqs_on+0x94/0x140
[  661.929761][ T5813]  do_syscall_64+0x4c/0xa0
[  661.934174][ T5813]  ? clear_bhb_loop+0x60/0xb0
[  661.938844][ T5813]  ? clear_bhb_loop+0x60/0xb0
[  661.943511][ T5813]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  661.949393][ T5813] RIP: 0033:0x7f07a958e1ff
[  661.953803][ T5813] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  661.973400][ T5813] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  661.981804][ T5813] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  661.989779][ T5813] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  661.997774][ T5813] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  662.005740][ T5813] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  662.013703][ T5813] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  662.021676][ T5813]  </TASK>
[  662.054795][ T5815] FAULT_INJECTION: forcing a failure.
[  662.054795][ T5815] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  662.068731][ T5815] CPU: 1 PID: 5815 Comm: syz.0.358 Not tainted syzkaller #0
[  662.076035][ T5815] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  662.086083][ T5815] Call Trace:
[  662.089355][ T5815]  <TASK>
[  662.092270][ T5815]  dump_stack_lvl+0x168/0x22e
[  662.096944][ T5815]  ? show_regs_print_info+0x12/0x12
[  662.102131][ T5815]  ? load_image+0x3b0/0x3b0
[  662.106642][ T5815]  ? __lock_acquire+0x7c50/0x7c50
[  662.111794][ T5815]  should_fail_ex+0x399/0x4d0
[  662.116472][ T5815]  _copy_from_user+0x2c/0x170
[  662.121196][ T5815]  kstrtouint_from_user+0xbe/0x150
[  662.126310][ T5815]  ? kstrtol_from_user+0x150/0x150
[  662.131424][ T5815]  proc_fail_nth_write+0x85/0x1f0
[  662.136442][ T5815]  ? proc_fail_nth_read+0x210/0x210
[  662.141633][ T5815]  ? common_file_perm+0x171/0x1c0
[  662.146656][ T5815]  ? proc_fail_nth_read+0x210/0x210
[  662.151843][ T5815]  vfs_write+0x2c4/0x960
[  662.156080][ T5815]  ? file_end_write+0x250/0x250
[  662.160956][ T5815]  ? __fget_files+0x28/0x4d0
[  662.165549][ T5815]  ? __fget_files+0x44a/0x4d0
[  662.170232][ T5815]  ? __fdget_pos+0x2ae/0x360
[  662.174812][ T5815]  ? ksys_write+0x71/0x240
[  662.179220][ T5815]  ksys_write+0x143/0x240
[  662.183543][ T5815]  ? __ia32_sys_read+0x80/0x80
[  662.188302][ T5815]  ? lockdep_hardirqs_on+0x94/0x140
[  662.193495][ T5815]  do_syscall_64+0x4c/0xa0
[  662.197900][ T5815]  ? clear_bhb_loop+0x60/0xb0
[  662.202735][ T5815]  ? clear_bhb_loop+0x60/0xb0
[  662.207405][ T5815]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  662.213285][ T5815] RIP: 0033:0x7f07a958e1ff
[  662.217688][ T5815] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  662.237286][ T5815] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  662.245691][ T5815] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  662.253654][ T5815] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  662.261644][ T5815] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  662.269616][ T5815] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  662.277585][ T5815] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  662.285569][ T5815]  </TASK>
[  662.320444][ T5820] FAULT_INJECTION: forcing a failure.
[  662.320444][ T5820] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  662.335106][ T5820] CPU: 1 PID: 5820 Comm: syz.0.359 Not tainted syzkaller #0
[  662.342412][ T5820] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  662.352462][ T5820] Call Trace:
[  662.355736][ T5820]  <TASK>
[  662.358663][ T5820]  dump_stack_lvl+0x168/0x22e
[  662.363358][ T5820]  ? show_regs_print_info+0x12/0x12
[  662.368552][ T5820]  ? load_image+0x3b0/0x3b0
[  662.373043][ T5820]  ? __lock_acquire+0x7c50/0x7c50
[  662.378061][ T5820]  should_fail_ex+0x399/0x4d0
[  662.382733][ T5820]  _copy_from_user+0x2c/0x170
[  662.387399][ T5820]  kstrtouint_from_user+0xbe/0x150
[  662.392500][ T5820]  ? kstrtol_from_user+0x150/0x150
[  662.397619][ T5820]  proc_fail_nth_write+0x85/0x1f0
[  662.402640][ T5820]  ? proc_fail_nth_read+0x210/0x210
[  662.407831][ T5820]  ? common_file_perm+0x171/0x1c0
[  662.412852][ T5820]  ? proc_fail_nth_read+0x210/0x210
[  662.418043][ T5820]  vfs_write+0x2c4/0x960
[  662.422288][ T5820]  ? file_end_write+0x250/0x250
[  662.427133][ T5820]  ? __fget_files+0x28/0x4d0
[  662.431718][ T5820]  ? __fget_files+0x44a/0x4d0
[  662.436393][ T5820]  ? __fdget_pos+0x2ae/0x360
[  662.440974][ T5820]  ? ksys_write+0x71/0x240
[  662.445385][ T5820]  ksys_write+0x143/0x240
[  662.449712][ T5820]  ? __ia32_sys_read+0x80/0x80
[  662.454476][ T5820]  ? lockdep_hardirqs_on+0x94/0x140
[  662.459667][ T5820]  do_syscall_64+0x4c/0xa0
[  662.464088][ T5820]  ? clear_bhb_loop+0x60/0xb0
[  662.468758][ T5820]  ? clear_bhb_loop+0x60/0xb0
[  662.473427][ T5820]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  662.479309][ T5820] RIP: 0033:0x7f07a958e1ff
[  662.483718][ T5820] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  662.503592][ T5820] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  662.512011][ T5820] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  662.519996][ T5820] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  662.527965][ T5820] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  662.535927][ T5820] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  662.543900][ T5820] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  662.551891][ T5820]  </TASK>
[  662.585106][ T5822] FAULT_INJECTION: forcing a failure.
[  662.585106][ T5822] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  662.598693][ T5822] CPU: 0 PID: 5822 Comm: syz.0.360 Not tainted syzkaller #0
[  662.605982][ T5822] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  662.616025][ T5822] Call Trace:
[  662.619292][ T5822]  <TASK>
[  662.622212][ T5822]  dump_stack_lvl+0x168/0x22e
[  662.626880][ T5822]  ? show_regs_print_info+0x12/0x12
[  662.632068][ T5822]  ? load_image+0x3b0/0x3b0
[  662.636558][ T5822]  ? __lock_acquire+0x7c50/0x7c50
[  662.641748][ T5822]  should_fail_ex+0x399/0x4d0
[  662.646420][ T5822]  _copy_from_user+0x2c/0x170
[  662.651099][ T5822]  kstrtouint_from_user+0xbe/0x150
[  662.656211][ T5822]  ? kstrtol_from_user+0x150/0x150
[  662.661323][ T5822]  proc_fail_nth_write+0x85/0x1f0
[  662.666332][ T5822]  ? proc_fail_nth_read+0x210/0x210
[  662.671510][ T5822]  ? common_file_perm+0x171/0x1c0
[  662.676524][ T5822]  ? proc_fail_nth_read+0x210/0x210
[  662.681704][ T5822]  vfs_write+0x2c4/0x960
[  662.685960][ T5822]  ? file_end_write+0x250/0x250
[  662.690884][ T5822]  ? __fget_files+0x28/0x4d0
[  662.695457][ T5822]  ? __fget_files+0x44a/0x4d0
[  662.700124][ T5822]  ? __fdget_pos+0x2ae/0x360
[  662.704706][ T5822]  ? ksys_write+0x71/0x240
[  662.709135][ T5822]  ksys_write+0x143/0x240
[  662.713461][ T5822]  ? __ia32_sys_read+0x80/0x80
[  662.718219][ T5822]  ? lockdep_hardirqs_on+0x94/0x140
[  662.723412][ T5822]  do_syscall_64+0x4c/0xa0
[  662.727823][ T5822]  ? clear_bhb_loop+0x60/0xb0
[  662.732518][ T5822]  ? clear_bhb_loop+0x60/0xb0
[  662.737184][ T5822]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  662.743070][ T5822] RIP: 0033:0x7f07a958e1ff
[  662.747498][ T5822] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  662.767097][ T5822] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  662.775507][ T5822] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  662.783470][ T5822] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  662.791428][ T5822] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  662.799387][ T5822] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  662.807346][ T5822] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  662.815330][ T5822]  </TASK>
[  662.861555][ T5824] FAULT_INJECTION: forcing a failure.
[  662.861555][ T5824] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  662.876317][ T5824] CPU: 0 PID: 5824 Comm: syz.0.361 Not tainted syzkaller #0
[  662.883615][ T5824] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  662.893669][ T5824] Call Trace:
[  662.896944][ T5824]  <TASK>
[  662.899946][ T5824]  dump_stack_lvl+0x168/0x22e
[  662.904618][ T5824]  ? show_regs_print_info+0x12/0x12
[  662.909809][ T5824]  ? load_image+0x3b0/0x3b0
[  662.914298][ T5824]  ? __lock_acquire+0x7c50/0x7c50
[  662.919311][ T5824]  should_fail_ex+0x399/0x4d0
[  662.923978][ T5824]  _copy_from_user+0x2c/0x170
[  662.928640][ T5824]  kstrtouint_from_user+0xbe/0x150
[  662.933744][ T5824]  ? kstrtol_from_user+0x150/0x150
[  662.938875][ T5824]  proc_fail_nth_write+0x85/0x1f0
[  662.943898][ T5824]  ? proc_fail_nth_read+0x210/0x210
[  662.949086][ T5824]  ? common_file_perm+0x171/0x1c0
[  662.954110][ T5824]  ? proc_fail_nth_read+0x210/0x210
[  662.959298][ T5824]  vfs_write+0x2c4/0x960
[  662.963540][ T5824]  ? file_end_write+0x250/0x250
[  662.968560][ T5824]  ? __fget_files+0x28/0x4d0
[  662.973143][ T5824]  ? __fget_files+0x44a/0x4d0
[  662.977819][ T5824]  ? __fdget_pos+0x2ae/0x360
[  662.982487][ T5824]  ? ksys_write+0x71/0x240
[  662.986901][ T5824]  ksys_write+0x143/0x240
[  662.991224][ T5824]  ? __ia32_sys_read+0x80/0x80
[  662.995984][ T5824]  ? lockdep_hardirqs_on+0x94/0x140
[  663.001175][ T5824]  do_syscall_64+0x4c/0xa0
[  663.005588][ T5824]  ? clear_bhb_loop+0x60/0xb0
[  663.010262][ T5824]  ? clear_bhb_loop+0x60/0xb0
[  663.014928][ T5824]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  663.020814][ T5824] RIP: 0033:0x7f07a958e1ff
[  663.025221][ T5824] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  663.044827][ T5824] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  663.053235][ T5824] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  663.061193][ T5824] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  663.069155][ T5824] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  663.077116][ T5824] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  663.085078][ T5824] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  663.093052][ T5824]  </TASK>
[  663.125460][ T5826] FAULT_INJECTION: forcing a failure.
[  663.125460][ T5826] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  663.138653][ T5826] CPU: 1 PID: 5826 Comm: syz.0.362 Not tainted syzkaller #0
[  663.145936][ T5826] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  663.155992][ T5826] Call Trace:
[  663.159273][ T5826]  <TASK>
[  663.162193][ T5826]  dump_stack_lvl+0x168/0x22e
[  663.166875][ T5826]  ? show_regs_print_info+0x12/0x12
[  663.172071][ T5826]  ? load_image+0x3b0/0x3b0
[  663.176580][ T5826]  ? __lock_acquire+0x7c50/0x7c50
[  663.181623][ T5826]  should_fail_ex+0x399/0x4d0
[  663.186321][ T5826]  _copy_from_user+0x2c/0x170
[  663.190995][ T5826]  kstrtouint_from_user+0xbe/0x150
[  663.196104][ T5826]  ? kstrtol_from_user+0x150/0x150
[  663.201230][ T5826]  proc_fail_nth_write+0x85/0x1f0
[  663.206254][ T5826]  ? proc_fail_nth_read+0x210/0x210
[  663.211459][ T5826]  ? common_file_perm+0x171/0x1c0
[  663.216528][ T5826]  ? proc_fail_nth_read+0x210/0x210
[  663.221760][ T5826]  vfs_write+0x2c4/0x960
[  663.225997][ T5826]  ? file_end_write+0x250/0x250
[  663.230841][ T5826]  ? __fget_files+0x28/0x4d0
[  663.235421][ T5826]  ? __fget_files+0x44a/0x4d0
[  663.240090][ T5826]  ? __fdget_pos+0x2ae/0x360
[  663.244669][ T5826]  ? ksys_write+0x71/0x240
[  663.249081][ T5826]  ksys_write+0x143/0x240
[  663.253405][ T5826]  ? __ia32_sys_read+0x80/0x80
[  663.258165][ T5826]  ? lockdep_hardirqs_on+0x94/0x140
[  663.263353][ T5826]  do_syscall_64+0x4c/0xa0
[  663.267762][ T5826]  ? clear_bhb_loop+0x60/0xb0
[  663.272467][ T5826]  ? clear_bhb_loop+0x60/0xb0
[  663.277138][ T5826]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  663.283019][ T5826] RIP: 0033:0x7f07a958e1ff
[  663.287420][ T5826] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  663.307025][ T5826] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  663.315439][ T5826] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  663.323398][ T5826] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  663.331374][ T5826] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  663.339350][ T5826] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  663.347316][ T5826] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  663.355291][ T5826]  </TASK>
2026/01/15 03:36:21 executed programs: 348
[  663.387685][ T5831] FAULT_INJECTION: forcing a failure.
[  663.387685][ T5831] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  663.401019][ T5831] CPU: 1 PID: 5831 Comm: syz.0.363 Not tainted syzkaller #0
[  663.408318][ T5831] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  663.418370][ T5831] Call Trace:
[  663.421643][ T5831]  <TASK>
[  663.424566][ T5831]  dump_stack_lvl+0x168/0x22e
[  663.429238][ T5831]  ? show_regs_print_info+0x12/0x12
[  663.434436][ T5831]  ? load_image+0x3b0/0x3b0
[  663.438966][ T5831]  ? __lock_acquire+0x7c50/0x7c50
[  663.444126][ T5831]  should_fail_ex+0x399/0x4d0
[  663.448823][ T5831]  _copy_from_user+0x2c/0x170
[  663.453506][ T5831]  kstrtouint_from_user+0xbe/0x150
[  663.458625][ T5831]  ? kstrtol_from_user+0x150/0x150
[  663.463756][ T5831]  proc_fail_nth_write+0x85/0x1f0
[  663.468801][ T5831]  ? proc_fail_nth_read+0x210/0x210
[  663.473993][ T5831]  ? common_file_perm+0x171/0x1c0
[  663.479019][ T5831]  ? proc_fail_nth_read+0x210/0x210
[  663.484208][ T5831]  vfs_write+0x2c4/0x960
[  663.488448][ T5831]  ? file_end_write+0x250/0x250
[  663.493289][ T5831]  ? __fget_files+0x28/0x4d0
[  663.497872][ T5831]  ? __fget_files+0x44a/0x4d0
[  663.502545][ T5831]  ? __fdget_pos+0x2ae/0x360
[  663.507135][ T5831]  ? ksys_write+0x71/0x240
[  663.511546][ T5831]  ksys_write+0x143/0x240
[  663.515871][ T5831]  ? __ia32_sys_read+0x80/0x80
[  663.520650][ T5831]  ? lockdep_hardirqs_on+0x94/0x140
[  663.525863][ T5831]  do_syscall_64+0x4c/0xa0
[  663.530287][ T5831]  ? clear_bhb_loop+0x60/0xb0
[  663.534962][ T5831]  ? clear_bhb_loop+0x60/0xb0
[  663.539631][ T5831]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  663.545608][ T5831] RIP: 0033:0x7f07a958e1ff
[  663.550012][ T5831] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  663.569812][ T5831] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  663.578219][ T5831] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  663.586182][ T5831] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  663.594149][ T5831] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  663.602214][ T5831] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  663.610194][ T5831] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  663.618212][ T5831]  </TASK>
[  663.650335][ T5836] FAULT_INJECTION: forcing a failure.
[  663.650335][ T5836] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  663.664039][ T5836] CPU: 0 PID: 5836 Comm: syz.0.364 Not tainted syzkaller #0
[  663.671358][ T5836] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  663.681406][ T5836] Call Trace:
[  663.684700][ T5836]  <TASK>
[  663.687623][ T5836]  dump_stack_lvl+0x168/0x22e
[  663.692306][ T5836]  ? show_regs_print_info+0x12/0x12
[  663.697499][ T5836]  ? load_image+0x3b0/0x3b0
[  663.702025][ T5836]  ? __lock_acquire+0x7c50/0x7c50
[  663.707065][ T5836]  should_fail_ex+0x399/0x4d0
[  663.711750][ T5836]  _copy_from_user+0x2c/0x170
[  663.716416][ T5836]  kstrtouint_from_user+0xbe/0x150
[  663.721530][ T5836]  ? kstrtol_from_user+0x150/0x150
[  663.726659][ T5836]  proc_fail_nth_write+0x85/0x1f0
[  663.731702][ T5836]  ? proc_fail_nth_read+0x210/0x210
[  663.736884][ T5836]  ? common_file_perm+0x171/0x1c0
[  663.741899][ T5836]  ? proc_fail_nth_read+0x210/0x210
[  663.747077][ T5836]  vfs_write+0x2c4/0x960
[  663.751304][ T5836]  ? file_end_write+0x250/0x250
[  663.756145][ T5836]  ? __fget_files+0x28/0x4d0
[  663.760718][ T5836]  ? __fget_files+0x44a/0x4d0
[  663.765381][ T5836]  ? __fdget_pos+0x2ae/0x360
[  663.769950][ T5836]  ? ksys_write+0x71/0x240
[  663.774355][ T5836]  ksys_write+0x143/0x240
[  663.778684][ T5836]  ? __ia32_sys_read+0x80/0x80
[  663.783446][ T5836]  ? lockdep_hardirqs_on+0x94/0x140
[  663.788645][ T5836]  do_syscall_64+0x4c/0xa0
[  663.793052][ T5836]  ? clear_bhb_loop+0x60/0xb0
[  663.797724][ T5836]  ? clear_bhb_loop+0x60/0xb0
[  663.802390][ T5836]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  663.808361][ T5836] RIP: 0033:0x7f07a958e1ff
[  663.812781][ T5836] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  663.832381][ T5836] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  663.840785][ T5836] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  663.848748][ T5836] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  663.856721][ T5836] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  663.864687][ T5836] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  663.872646][ T5836] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  663.880622][ T5836]  </TASK>
[  663.927964][ T5840] FAULT_INJECTION: forcing a failure.
[  663.927964][ T5840] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  663.941882][ T5840] CPU: 1 PID: 5840 Comm: syz.0.365 Not tainted syzkaller #0
[  663.949175][ T5840] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  663.959224][ T5840] Call Trace:
[  663.962491][ T5840]  <TASK>
[  663.965415][ T5840]  dump_stack_lvl+0x168/0x22e
[  663.970082][ T5840]  ? show_regs_print_info+0x12/0x12
[  663.975277][ T5840]  ? load_image+0x3b0/0x3b0
[  663.979785][ T5840]  ? __lock_acquire+0x7c50/0x7c50
[  663.984828][ T5840]  should_fail_ex+0x399/0x4d0
[  663.989497][ T5840]  _copy_from_user+0x2c/0x170
[  663.994179][ T5840]  kstrtouint_from_user+0xbe/0x150
[  663.999304][ T5840]  ? kstrtol_from_user+0x150/0x150
[  664.004412][ T5840]  proc_fail_nth_write+0x85/0x1f0
[  664.009425][ T5840]  ? proc_fail_nth_read+0x210/0x210
[  664.014621][ T5840]  ? common_file_perm+0x171/0x1c0
[  664.019659][ T5840]  ? proc_fail_nth_read+0x210/0x210
[  664.024847][ T5840]  vfs_write+0x2c4/0x960
[  664.029087][ T5840]  ? file_end_write+0x250/0x250
[  664.033935][ T5840]  ? __fget_files+0x28/0x4d0
[  664.038526][ T5840]  ? __fget_files+0x44a/0x4d0
[  664.043201][ T5840]  ? __fdget_pos+0x2ae/0x360
[  664.047781][ T5840]  ? ksys_write+0x71/0x240
[  664.052198][ T5840]  ksys_write+0x143/0x240
[  664.056528][ T5840]  ? __ia32_sys_read+0x80/0x80
[  664.061288][ T5840]  ? lockdep_hardirqs_on+0x94/0x140
[  664.066486][ T5840]  do_syscall_64+0x4c/0xa0
[  664.070898][ T5840]  ? clear_bhb_loop+0x60/0xb0
[  664.075566][ T5840]  ? clear_bhb_loop+0x60/0xb0
[  664.080239][ T5840]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  664.086125][ T5840] RIP: 0033:0x7f07a958e1ff
[  664.090525][ T5840] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  664.110131][ T5840] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  664.118563][ T5840] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  664.126545][ T5840] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  664.134627][ T5840] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  664.142609][ T5840] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  664.150568][ T5840] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  664.158547][ T5840]  </TASK>
[  664.192462][ T5845] FAULT_INJECTION: forcing a failure.
[  664.192462][ T5845] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  664.205815][ T5845] CPU: 1 PID: 5845 Comm: syz.0.366 Not tainted syzkaller #0
[  664.213095][ T5845] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  664.223147][ T5845] Call Trace:
[  664.226421][ T5845]  <TASK>
[  664.229339][ T5845]  dump_stack_lvl+0x168/0x22e
[  664.234018][ T5845]  ? show_regs_print_info+0x12/0x12
[  664.239226][ T5845]  ? load_image+0x3b0/0x3b0
[  664.243733][ T5845]  ? __lock_acquire+0x7c50/0x7c50
[  664.248797][ T5845]  should_fail_ex+0x399/0x4d0
[  664.253499][ T5845]  _copy_from_user+0x2c/0x170
[  664.258184][ T5845]  kstrtouint_from_user+0xbe/0x150
[  664.263292][ T5845]  ? kstrtol_from_user+0x150/0x150
[  664.268442][ T5845]  proc_fail_nth_write+0x85/0x1f0
[  664.273457][ T5845]  ? proc_fail_nth_read+0x210/0x210
[  664.278652][ T5845]  ? common_file_perm+0x171/0x1c0
[  664.283701][ T5845]  ? proc_fail_nth_read+0x210/0x210
[  664.288913][ T5845]  vfs_write+0x2c4/0x960
[  664.293173][ T5845]  ? file_end_write+0x250/0x250
[  664.298033][ T5845]  ? __fget_files+0x28/0x4d0
[  664.302619][ T5845]  ? __fget_files+0x44a/0x4d0
[  664.307293][ T5845]  ? __fdget_pos+0x2ae/0x360
[  664.311873][ T5845]  ? ksys_write+0x71/0x240
[  664.316282][ T5845]  ksys_write+0x143/0x240
[  664.320608][ T5845]  ? __ia32_sys_read+0x80/0x80
[  664.325391][ T5845]  ? lockdep_hardirqs_on+0x94/0x140
[  664.330588][ T5845]  do_syscall_64+0x4c/0xa0
[  664.335000][ T5845]  ? clear_bhb_loop+0x60/0xb0
[  664.339671][ T5845]  ? clear_bhb_loop+0x60/0xb0
[  664.344354][ T5845]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  664.350239][ T5845] RIP: 0033:0x7f07a958e1ff
[  664.354664][ T5845] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  664.374277][ T5845] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  664.382702][ T5845] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  664.390753][ T5845] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  664.398737][ T5845] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  664.406713][ T5845] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  664.414772][ T5845] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  664.422844][ T5845]  </TASK>
[  664.457592][ T5850] FAULT_INJECTION: forcing a failure.
[  664.457592][ T5850] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  664.471526][ T5850] CPU: 1 PID: 5850 Comm: syz.0.367 Not tainted syzkaller #0
[  664.478813][ T5850] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  664.488863][ T5850] Call Trace:
[  664.492140][ T5850]  <TASK>
[  664.495063][ T5850]  dump_stack_lvl+0x168/0x22e
[  664.499742][ T5850]  ? show_regs_print_info+0x12/0x12
[  664.504936][ T5850]  ? load_image+0x3b0/0x3b0
[  664.509452][ T5850]  ? __lock_acquire+0x7c50/0x7c50
[  664.514501][ T5850]  should_fail_ex+0x399/0x4d0
[  664.519175][ T5850]  _copy_from_user+0x2c/0x170
[  664.523850][ T5850]  kstrtouint_from_user+0xbe/0x150
[  664.528966][ T5850]  ? kstrtol_from_user+0x150/0x150
[  664.534101][ T5850]  proc_fail_nth_write+0x85/0x1f0
[  664.539137][ T5850]  ? proc_fail_nth_read+0x210/0x210
[  664.544343][ T5850]  ? common_file_perm+0x171/0x1c0
[  664.549380][ T5850]  ? proc_fail_nth_read+0x210/0x210
[  664.554573][ T5850]  vfs_write+0x2c4/0x960
[  664.558821][ T5850]  ? file_end_write+0x250/0x250
[  664.563672][ T5850]  ? __fget_files+0x28/0x4d0
[  664.568267][ T5850]  ? __fget_files+0x44a/0x4d0
[  664.572936][ T5850]  ? __fdget_pos+0x2ae/0x360
[  664.577512][ T5850]  ? ksys_write+0x71/0x240
[  664.581919][ T5850]  ksys_write+0x143/0x240
[  664.586237][ T5850]  ? __ia32_sys_read+0x80/0x80
[  664.590996][ T5850]  ? lockdep_hardirqs_on+0x94/0x140
[  664.596187][ T5850]  do_syscall_64+0x4c/0xa0
[  664.600604][ T5850]  ? clear_bhb_loop+0x60/0xb0
[  664.605270][ T5850]  ? clear_bhb_loop+0x60/0xb0
[  664.610109][ T5850]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  664.616345][ T5850] RIP: 0033:0x7f07a958e1ff
[  664.620744][ T5850] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  664.640349][ T5850] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  664.648759][ T5850] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  664.656727][ T5850] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  664.664687][ T5850] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  664.672647][ T5850] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  664.680622][ T5850] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  664.688603][ T5850]  </TASK>
[  664.723211][ T5855] FAULT_INJECTION: forcing a failure.
[  664.723211][ T5855] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  664.737024][ T5855] CPU: 0 PID: 5855 Comm: syz.0.368 Not tainted syzkaller #0
[  664.744343][ T5855] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  664.754410][ T5855] Call Trace:
[  664.757677][ T5855]  <TASK>
[  664.760599][ T5855]  dump_stack_lvl+0x168/0x22e
[  664.765288][ T5855]  ? show_regs_print_info+0x12/0x12
[  664.770497][ T5855]  ? load_image+0x3b0/0x3b0
[  664.774995][ T5855]  ? __lock_acquire+0x7c50/0x7c50
[  664.780014][ T5855]  should_fail_ex+0x399/0x4d0
[  664.784688][ T5855]  _copy_from_user+0x2c/0x170
[  664.789355][ T5855]  kstrtouint_from_user+0xbe/0x150
[  664.794458][ T5855]  ? kstrtol_from_user+0x150/0x150
[  664.799566][ T5855]  proc_fail_nth_write+0x85/0x1f0
[  664.804577][ T5855]  ? proc_fail_nth_read+0x210/0x210
[  664.809759][ T5855]  ? common_file_perm+0x171/0x1c0
[  664.814777][ T5855]  ? proc_fail_nth_read+0x210/0x210
[  664.819958][ T5855]  vfs_write+0x2c4/0x960
[  664.824192][ T5855]  ? file_end_write+0x250/0x250
[  664.829025][ T5855]  ? __fget_files+0x28/0x4d0
[  664.833602][ T5855]  ? __fget_files+0x44a/0x4d0
[  664.838278][ T5855]  ? __fdget_pos+0x2ae/0x360
[  664.842856][ T5855]  ? ksys_write+0x71/0x240
[  664.847258][ T5855]  ksys_write+0x143/0x240
[  664.851594][ T5855]  ? __ia32_sys_read+0x80/0x80
[  664.856343][ T5855]  ? lockdep_hardirqs_on+0x94/0x140
[  664.861527][ T5855]  do_syscall_64+0x4c/0xa0
[  664.865930][ T5855]  ? clear_bhb_loop+0x60/0xb0
[  664.870592][ T5855]  ? clear_bhb_loop+0x60/0xb0
[  664.875252][ T5855]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  664.881127][ T5855] RIP: 0033:0x7f07a958e1ff
[  664.885528][ T5855] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  664.905123][ T5855] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  664.913604][ T5855] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  664.921560][ T5855] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  664.929511][ T5855] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  664.937467][ T5855] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  664.945424][ T5855] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  664.953390][ T5855]  </TASK>
[  664.987629][ T5858] FAULT_INJECTION: forcing a failure.
[  664.987629][ T5858] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  665.001676][ T5858] CPU: 0 PID: 5858 Comm: syz.0.369 Not tainted syzkaller #0
[  665.008971][ T5858] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  665.019025][ T5858] Call Trace:
[  665.022296][ T5858]  <TASK>
[  665.025213][ T5858]  dump_stack_lvl+0x168/0x22e
[  665.029878][ T5858]  ? show_regs_print_info+0x12/0x12
[  665.035060][ T5858]  ? load_image+0x3b0/0x3b0
[  665.039551][ T5858]  ? __lock_acquire+0x7c50/0x7c50
[  665.044745][ T5858]  should_fail_ex+0x399/0x4d0
[  665.049413][ T5858]  _copy_from_user+0x2c/0x170
[  665.054092][ T5858]  kstrtouint_from_user+0xbe/0x150
[  665.059228][ T5858]  ? kstrtol_from_user+0x150/0x150
[  665.064349][ T5858]  proc_fail_nth_write+0x85/0x1f0
[  665.069380][ T5858]  ? proc_fail_nth_read+0x210/0x210
[  665.074576][ T5858]  ? common_file_perm+0x171/0x1c0
[  665.079599][ T5858]  ? proc_fail_nth_read+0x210/0x210
[  665.084782][ T5858]  vfs_write+0x2c4/0x960
[  665.089016][ T5858]  ? file_end_write+0x250/0x250
[  665.093865][ T5858]  ? __fget_files+0x28/0x4d0
[  665.098464][ T5858]  ? __fget_files+0x44a/0x4d0
[  665.103211][ T5858]  ? __fdget_pos+0x2ae/0x360
[  665.107808][ T5858]  ? ksys_write+0x71/0x240
[  665.112237][ T5858]  ksys_write+0x143/0x240
[  665.116583][ T5858]  ? __ia32_sys_read+0x80/0x80
[  665.121365][ T5858]  ? lockdep_hardirqs_on+0x94/0x140
[  665.126605][ T5858]  do_syscall_64+0x4c/0xa0
[  665.131018][ T5858]  ? clear_bhb_loop+0x60/0xb0
[  665.135689][ T5858]  ? clear_bhb_loop+0x60/0xb0
[  665.140362][ T5858]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  665.146333][ T5858] RIP: 0033:0x7f07a958e1ff
[  665.150742][ T5858] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  665.170339][ T5858] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  665.178747][ T5858] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  665.186707][ T5858] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  665.194679][ T5858] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  665.202655][ T5858] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  665.210622][ T5858] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  665.218604][ T5858]  </TASK>
[  665.253040][ T5860] FAULT_INJECTION: forcing a failure.
[  665.253040][ T5860] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  665.266370][ T5860] CPU: 1 PID: 5860 Comm: syz.0.370 Not tainted syzkaller #0
[  665.273653][ T5860] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  665.283801][ T5860] Call Trace:
[  665.287092][ T5860]  <TASK>
[  665.290015][ T5860]  dump_stack_lvl+0x168/0x22e
[  665.294701][ T5860]  ? show_regs_print_info+0x12/0x12
[  665.299924][ T5860]  ? load_image+0x3b0/0x3b0
[  665.304613][ T5860]  ? __lock_acquire+0x7c50/0x7c50
[  665.309718][ T5860]  should_fail_ex+0x399/0x4d0
[  665.314418][ T5860]  _copy_from_user+0x2c/0x170
[  665.319118][ T5860]  kstrtouint_from_user+0xbe/0x150
[  665.324276][ T5860]  ? kstrtol_from_user+0x150/0x150
[  665.329416][ T5860]  proc_fail_nth_write+0x85/0x1f0
[  665.334463][ T5860]  ? proc_fail_nth_read+0x210/0x210
[  665.339780][ T5860]  ? common_file_perm+0x171/0x1c0
[  665.344831][ T5860]  ? proc_fail_nth_read+0x210/0x210
[  665.350034][ T5860]  vfs_write+0x2c4/0x960
[  665.354370][ T5860]  ? file_end_write+0x250/0x250
[  665.359222][ T5860]  ? __fget_files+0x28/0x4d0
[  665.363820][ T5860]  ? __fget_files+0x44a/0x4d0
[  665.368499][ T5860]  ? __fdget_pos+0x2ae/0x360
[  665.373085][ T5860]  ? ksys_write+0x71/0x240
[  665.377520][ T5860]  ksys_write+0x143/0x240
[  665.381876][ T5860]  ? __ia32_sys_read+0x80/0x80
[  665.386650][ T5860]  ? lockdep_hardirqs_on+0x94/0x140
[  665.391847][ T5860]  do_syscall_64+0x4c/0xa0
[  665.396299][ T5860]  ? clear_bhb_loop+0x60/0xb0
[  665.400990][ T5860]  ? clear_bhb_loop+0x60/0xb0
[  665.405663][ T5860]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  665.411549][ T5860] RIP: 0033:0x7f07a958e1ff
[  665.415957][ T5860] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  665.435568][ T5860] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  665.443976][ T5860] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  665.451940][ T5860] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  665.459901][ T5860] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  665.467864][ T5860] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  665.475826][ T5860] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  665.483801][ T5860]  </TASK>
[  665.525160][ T5865] FAULT_INJECTION: forcing a failure.
[  665.525160][ T5865] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  665.539353][ T5865] CPU: 1 PID: 5865 Comm: syz.0.371 Not tainted syzkaller #0
[  665.546637][ T5865] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  665.556851][ T5865] Call Trace:
[  665.560115][ T5865]  <TASK>
[  665.563032][ T5865]  dump_stack_lvl+0x168/0x22e
[  665.567706][ T5865]  ? show_regs_print_info+0x12/0x12
[  665.572889][ T5865]  ? load_image+0x3b0/0x3b0
[  665.577400][ T5865]  ? __lock_acquire+0x7c50/0x7c50
[  665.582444][ T5865]  should_fail_ex+0x399/0x4d0
[  665.587123][ T5865]  _copy_from_user+0x2c/0x170
[  665.591794][ T5865]  kstrtouint_from_user+0xbe/0x150
[  665.596901][ T5865]  ? kstrtol_from_user+0x150/0x150
[  665.602020][ T5865]  proc_fail_nth_write+0x85/0x1f0
[  665.607046][ T5865]  ? proc_fail_nth_read+0x210/0x210
[  665.612234][ T5865]  ? common_file_perm+0x171/0x1c0
[  665.617518][ T5865]  ? proc_fail_nth_read+0x210/0x210
[  665.622706][ T5865]  vfs_write+0x2c4/0x960
[  665.626945][ T5865]  ? file_end_write+0x250/0x250
[  665.631799][ T5865]  ? __fget_files+0x28/0x4d0
[  665.636390][ T5865]  ? __fget_files+0x44a/0x4d0
[  665.641063][ T5865]  ? __fdget_pos+0x2ae/0x360
[  665.645644][ T5865]  ? ksys_write+0x71/0x240
[  665.650046][ T5865]  ksys_write+0x143/0x240
[  665.654362][ T5865]  ? __ia32_sys_read+0x80/0x80
[  665.659110][ T5865]  ? lockdep_hardirqs_on+0x94/0x140
[  665.664300][ T5865]  do_syscall_64+0x4c/0xa0
[  665.668701][ T5865]  ? clear_bhb_loop+0x60/0xb0
[  665.673359][ T5865]  ? clear_bhb_loop+0x60/0xb0
[  665.678021][ T5865]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  665.683898][ T5865] RIP: 0033:0x7f07a958e1ff
[  665.688303][ T5865] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  665.707980][ T5865] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  665.716379][ T5865] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  665.724334][ T5865] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  665.732287][ T5865] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  665.740237][ T5865] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  665.748188][ T5865] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  665.756152][ T5865]  </TASK>
[  665.798208][ T5870] FAULT_INJECTION: forcing a failure.
[  665.798208][ T5870] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  665.812793][ T5870] CPU: 0 PID: 5870 Comm: syz.0.372 Not tainted syzkaller #0
[  665.820098][ T5870] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  665.830142][ T5870] Call Trace:
[  665.833422][ T5870]  <TASK>
[  665.836354][ T5870]  dump_stack_lvl+0x168/0x22e
[  665.841024][ T5870]  ? show_regs_print_info+0x12/0x12
[  665.846210][ T5870]  ? load_image+0x3b0/0x3b0
[  665.850699][ T5870]  ? __lock_acquire+0x7c50/0x7c50
[  665.855715][ T5870]  should_fail_ex+0x399/0x4d0
[  665.860380][ T5870]  _copy_from_user+0x2c/0x170
[  665.865064][ T5870]  kstrtouint_from_user+0xbe/0x150
[  665.870194][ T5870]  ? kstrtol_from_user+0x150/0x150
[  665.875317][ T5870]  proc_fail_nth_write+0x85/0x1f0
[  665.880343][ T5870]  ? proc_fail_nth_read+0x210/0x210
[  665.885543][ T5870]  ? common_file_perm+0x171/0x1c0
[  665.890580][ T5870]  ? proc_fail_nth_read+0x210/0x210
[  665.895777][ T5870]  vfs_write+0x2c4/0x960
[  665.900026][ T5870]  ? file_end_write+0x250/0x250
[  665.904870][ T5870]  ? __fget_files+0x28/0x4d0
[  665.909454][ T5870]  ? __fget_files+0x44a/0x4d0
[  665.914128][ T5870]  ? __fdget_pos+0x2ae/0x360
[  665.918975][ T5870]  ? ksys_write+0x71/0x240
[  665.923389][ T5870]  ksys_write+0x143/0x240
[  665.927716][ T5870]  ? __ia32_sys_read+0x80/0x80
[  665.932474][ T5870]  ? lockdep_hardirqs_on+0x94/0x140
[  665.937674][ T5870]  do_syscall_64+0x4c/0xa0
[  665.942082][ T5870]  ? clear_bhb_loop+0x60/0xb0
[  665.946751][ T5870]  ? clear_bhb_loop+0x60/0xb0
[  665.951420][ T5870]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  665.957301][ T5870] RIP: 0033:0x7f07a958e1ff
[  665.961706][ T5870] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  665.981305][ T5870] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  665.989721][ T5870] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  665.997681][ T5870] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  666.005638][ T5870] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  666.013598][ T5870] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  666.021556][ T5870] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  666.029529][ T5870]  </TASK>
[  666.068725][ T5872] FAULT_INJECTION: forcing a failure.
[  666.068725][ T5872] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  666.082012][ T5872] CPU: 1 PID: 5872 Comm: syz.0.373 Not tainted syzkaller #0
[  666.089294][ T5872] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  666.099345][ T5872] Call Trace:
[  666.102616][ T5872]  <TASK>
[  666.105544][ T5872]  dump_stack_lvl+0x168/0x22e
[  666.110214][ T5872]  ? show_regs_print_info+0x12/0x12
[  666.115404][ T5872]  ? load_image+0x3b0/0x3b0
[  666.119909][ T5872]  ? __lock_acquire+0x7c50/0x7c50
[  666.124952][ T5872]  should_fail_ex+0x399/0x4d0
[  666.129645][ T5872]  _copy_from_user+0x2c/0x170
[  666.134331][ T5872]  kstrtouint_from_user+0xbe/0x150
[  666.139458][ T5872]  ? kstrtol_from_user+0x150/0x150
[  666.144574][ T5872]  proc_fail_nth_write+0x85/0x1f0
[  666.149588][ T5872]  ? proc_fail_nth_read+0x210/0x210
[  666.154795][ T5872]  ? common_file_perm+0x171/0x1c0
[  666.159836][ T5872]  ? proc_fail_nth_read+0x210/0x210
[  666.165026][ T5872]  vfs_write+0x2c4/0x960
[  666.169272][ T5872]  ? file_end_write+0x250/0x250
[  666.174118][ T5872]  ? __fget_files+0x28/0x4d0
[  666.178707][ T5872]  ? __fget_files+0x44a/0x4d0
[  666.183385][ T5872]  ? __fdget_pos+0x2ae/0x360
[  666.187967][ T5872]  ? ksys_write+0x71/0x240
[  666.192377][ T5872]  ksys_write+0x143/0x240
[  666.196698][ T5872]  ? __ia32_sys_read+0x80/0x80
[  666.201453][ T5872]  ? lockdep_hardirqs_on+0x94/0x140
[  666.206646][ T5872]  do_syscall_64+0x4c/0xa0
[  666.211054][ T5872]  ? clear_bhb_loop+0x60/0xb0
[  666.215722][ T5872]  ? clear_bhb_loop+0x60/0xb0
[  666.220394][ T5872]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  666.226276][ T5872] RIP: 0033:0x7f07a958e1ff
[  666.230683][ T5872] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  666.250281][ T5872] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  666.258686][ T5872] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  666.266646][ T5872] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  666.274606][ T5872] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  666.282564][ T5872] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  666.290527][ T5872] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  666.298509][ T5872]  </TASK>
[  666.338971][ T5877] FAULT_INJECTION: forcing a failure.
[  666.338971][ T5877] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  666.352924][ T5877] CPU: 1 PID: 5877 Comm: syz.0.374 Not tainted syzkaller #0
[  666.360233][ T5877] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  666.370284][ T5877] Call Trace:
[  666.373559][ T5877]  <TASK>
[  666.376481][ T5877]  dump_stack_lvl+0x168/0x22e
[  666.381153][ T5877]  ? show_regs_print_info+0x12/0x12
[  666.386346][ T5877]  ? load_image+0x3b0/0x3b0
[  666.390856][ T5877]  ? __lock_acquire+0x7c50/0x7c50
[  666.395905][ T5877]  should_fail_ex+0x399/0x4d0
[  666.400594][ T5877]  _copy_from_user+0x2c/0x170
[  666.405274][ T5877]  kstrtouint_from_user+0xbe/0x150
[  666.410430][ T5877]  ? kstrtol_from_user+0x150/0x150
[  666.415543][ T5877]  proc_fail_nth_write+0x85/0x1f0
[  666.420558][ T5877]  ? proc_fail_nth_read+0x210/0x210
[  666.425756][ T5877]  ? common_file_perm+0x171/0x1c0
[  666.430777][ T5877]  ? proc_fail_nth_read+0x210/0x210
[  666.435960][ T5877]  vfs_write+0x2c4/0x960
[  666.440200][ T5877]  ? file_end_write+0x250/0x250
[  666.445048][ T5877]  ? __fget_files+0x28/0x4d0
[  666.449630][ T5877]  ? __fget_files+0x44a/0x4d0
[  666.454301][ T5877]  ? __fdget_pos+0x2ae/0x360
[  666.458876][ T5877]  ? ksys_write+0x71/0x240
[  666.463294][ T5877]  ksys_write+0x143/0x240
[  666.467631][ T5877]  ? __ia32_sys_read+0x80/0x80
[  666.472394][ T5877]  ? lockdep_hardirqs_on+0x94/0x140
[  666.477593][ T5877]  do_syscall_64+0x4c/0xa0
[  666.482003][ T5877]  ? clear_bhb_loop+0x60/0xb0
[  666.486696][ T5877]  ? clear_bhb_loop+0x60/0xb0
[  666.491374][ T5877]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  666.497258][ T5877] RIP: 0033:0x7f07a958e1ff
[  666.501744][ T5877] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  666.521354][ T5877] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  666.529760][ T5877] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  666.537723][ T5877] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  666.545688][ T5877] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  666.553649][ T5877] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  666.561708][ T5877] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  666.569678][ T5877]  </TASK>
[  666.601880][ T5882] FAULT_INJECTION: forcing a failure.
[  666.601880][ T5882] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  666.615660][ T5882] CPU: 1 PID: 5882 Comm: syz.0.375 Not tainted syzkaller #0
[  666.622943][ T5882] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  666.633083][ T5882] Call Trace:
[  666.636354][ T5882]  <TASK>
[  666.639298][ T5882]  dump_stack_lvl+0x168/0x22e
[  666.643974][ T5882]  ? show_regs_print_info+0x12/0x12
[  666.649189][ T5882]  ? load_image+0x3b0/0x3b0
[  666.653705][ T5882]  ? __lock_acquire+0x7c50/0x7c50
[  666.658745][ T5882]  should_fail_ex+0x399/0x4d0
[  666.663422][ T5882]  _copy_from_user+0x2c/0x170
[  666.668094][ T5882]  kstrtouint_from_user+0xbe/0x150
[  666.673213][ T5882]  ? kstrtol_from_user+0x150/0x150
[  666.678331][ T5882]  proc_fail_nth_write+0x85/0x1f0
[  666.683342][ T5882]  ? proc_fail_nth_read+0x210/0x210
[  666.688532][ T5882]  ? common_file_perm+0x171/0x1c0
[  666.693561][ T5882]  ? proc_fail_nth_read+0x210/0x210
[  666.698750][ T5882]  vfs_write+0x2c4/0x960
[  666.702994][ T5882]  ? file_end_write+0x250/0x250
[  666.707838][ T5882]  ? __fget_files+0x28/0x4d0
[  666.712420][ T5882]  ? __fget_files+0x44a/0x4d0
[  666.717096][ T5882]  ? __fdget_pos+0x2ae/0x360
[  666.721676][ T5882]  ? ksys_write+0x71/0x240
[  666.726087][ T5882]  ksys_write+0x143/0x240
[  666.730411][ T5882]  ? __ia32_sys_read+0x80/0x80
[  666.735170][ T5882]  ? lockdep_hardirqs_on+0x94/0x140
[  666.740363][ T5882]  do_syscall_64+0x4c/0xa0
[  666.744775][ T5882]  ? clear_bhb_loop+0x60/0xb0
[  666.749455][ T5882]  ? clear_bhb_loop+0x60/0xb0
[  666.754129][ T5882]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  666.760017][ T5882] RIP: 0033:0x7f07a958e1ff
[  666.764424][ T5882] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  666.784106][ T5882] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  666.792530][ T5882] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  666.800495][ T5882] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  666.808454][ T5882] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  666.816414][ T5882] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  666.824375][ T5882] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  666.832353][ T5882]  </TASK>
[  666.865466][ T5887] FAULT_INJECTION: forcing a failure.
[  666.865466][ T5887] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  666.879238][ T5887] CPU: 1 PID: 5887 Comm: syz.0.376 Not tainted syzkaller #0
[  666.886527][ T5887] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  666.896577][ T5887] Call Trace:
[  666.899847][ T5887]  <TASK>
[  666.902764][ T5887]  dump_stack_lvl+0x168/0x22e
[  666.907437][ T5887]  ? show_regs_print_info+0x12/0x12
[  666.912633][ T5887]  ? load_image+0x3b0/0x3b0
[  666.917147][ T5887]  ? __lock_acquire+0x7c50/0x7c50
[  666.922200][ T5887]  should_fail_ex+0x399/0x4d0
[  666.926889][ T5887]  _copy_from_user+0x2c/0x170
[  666.931568][ T5887]  kstrtouint_from_user+0xbe/0x150
[  666.936677][ T5887]  ? kstrtol_from_user+0x150/0x150
[  666.941791][ T5887]  proc_fail_nth_write+0x85/0x1f0
[  666.946822][ T5887]  ? proc_fail_nth_read+0x210/0x210
[  666.952453][ T5887]  ? common_file_perm+0x171/0x1c0
[  666.957486][ T5887]  ? proc_fail_nth_read+0x210/0x210
[  666.962682][ T5887]  vfs_write+0x2c4/0x960
[  666.966924][ T5887]  ? file_end_write+0x250/0x250
[  666.971764][ T5887]  ? __fget_files+0x28/0x4d0
[  666.976345][ T5887]  ? __fget_files+0x44a/0x4d0
[  666.981021][ T5887]  ? __fdget_pos+0x2ae/0x360
[  666.985601][ T5887]  ? ksys_write+0x71/0x240
[  666.990011][ T5887]  ksys_write+0x143/0x240
[  666.994341][ T5887]  ? __ia32_sys_read+0x80/0x80
[  666.999125][ T5887]  ? lockdep_hardirqs_on+0x94/0x140
[  667.004331][ T5887]  do_syscall_64+0x4c/0xa0
[  667.008746][ T5887]  ? clear_bhb_loop+0x60/0xb0
[  667.013422][ T5887]  ? clear_bhb_loop+0x60/0xb0
[  667.018110][ T5887]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  667.024008][ T5887] RIP: 0033:0x7f07a958e1ff
[  667.028422][ T5887] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  667.048035][ T5887] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  667.056465][ T5887] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  667.064453][ T5887] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  667.072416][ T5887] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  667.080405][ T5887] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  667.088371][ T5887] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  667.096345][ T5887]  </TASK>
[  667.135520][ T5892] FAULT_INJECTION: forcing a failure.
[  667.135520][ T5892] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  667.149270][ T5892] CPU: 1 PID: 5892 Comm: syz.0.377 Not tainted syzkaller #0
[  667.156562][ T5892] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  667.166621][ T5892] Call Trace:
[  667.169886][ T5892]  <TASK>
[  667.172799][ T5892]  dump_stack_lvl+0x168/0x22e
[  667.177471][ T5892]  ? show_regs_print_info+0x12/0x12
[  667.182661][ T5892]  ? load_image+0x3b0/0x3b0
[  667.187174][ T5892]  ? __lock_acquire+0x7c50/0x7c50
[  667.192220][ T5892]  should_fail_ex+0x399/0x4d0
[  667.196906][ T5892]  _copy_from_user+0x2c/0x170
[  667.201582][ T5892]  kstrtouint_from_user+0xbe/0x150
[  667.206692][ T5892]  ? kstrtol_from_user+0x150/0x150
[  667.211805][ T5892]  proc_fail_nth_write+0x85/0x1f0
[  667.216828][ T5892]  ? proc_fail_nth_read+0x210/0x210
[  667.222023][ T5892]  ? common_file_perm+0x171/0x1c0
[  667.227051][ T5892]  ? proc_fail_nth_read+0x210/0x210
[  667.232245][ T5892]  vfs_write+0x2c4/0x960
[  667.236497][ T5892]  ? file_end_write+0x250/0x250
[  667.241432][ T5892]  ? __fget_files+0x28/0x4d0
[  667.246321][ T5892]  ? __fget_files+0x44a/0x4d0
[  667.251176][ T5892]  ? __fdget_pos+0x2ae/0x360
[  667.255759][ T5892]  ? ksys_write+0x71/0x240
[  667.260171][ T5892]  ksys_write+0x143/0x240
[  667.264500][ T5892]  ? __ia32_sys_read+0x80/0x80
[  667.269267][ T5892]  ? lockdep_hardirqs_on+0x94/0x140
[  667.274470][ T5892]  do_syscall_64+0x4c/0xa0
[  667.278881][ T5892]  ? clear_bhb_loop+0x60/0xb0
[  667.283550][ T5892]  ? clear_bhb_loop+0x60/0xb0
[  667.288221][ T5892]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  667.294113][ T5892] RIP: 0033:0x7f07a958e1ff
[  667.298522][ T5892] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  667.318122][ T5892] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  667.326531][ T5892] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  667.334510][ T5892] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  667.342468][ T5892] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  667.350435][ T5892] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  667.358425][ T5892] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  667.366520][ T5892]  </TASK>
[  667.401680][ T5897] FAULT_INJECTION: forcing a failure.
[  667.401680][ T5897] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  667.415452][ T5897] CPU: 1 PID: 5897 Comm: syz.0.378 Not tainted syzkaller #0
[  667.422770][ T5897] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  667.432825][ T5897] Call Trace:
[  667.436096][ T5897]  <TASK>
[  667.439016][ T5897]  dump_stack_lvl+0x168/0x22e
[  667.443706][ T5897]  ? show_regs_print_info+0x12/0x12
[  667.448917][ T5897]  ? load_image+0x3b0/0x3b0
[  667.453442][ T5897]  ? __lock_acquire+0x7c50/0x7c50
[  667.458489][ T5897]  should_fail_ex+0x399/0x4d0
[  667.463174][ T5897]  _copy_from_user+0x2c/0x170
[  667.467851][ T5897]  kstrtouint_from_user+0xbe/0x150
[  667.472966][ T5897]  ? kstrtol_from_user+0x150/0x150
[  667.478125][ T5897]  proc_fail_nth_write+0x85/0x1f0
[  667.483163][ T5897]  ? proc_fail_nth_read+0x210/0x210
[  667.488369][ T5897]  ? common_file_perm+0x171/0x1c0
[  667.493408][ T5897]  ? proc_fail_nth_read+0x210/0x210
[  667.498604][ T5897]  vfs_write+0x2c4/0x960
[  667.502846][ T5897]  ? file_end_write+0x250/0x250
[  667.507692][ T5897]  ? __fget_files+0x28/0x4d0
[  667.512283][ T5897]  ? __fget_files+0x44a/0x4d0
[  667.516952][ T5897]  ? __fdget_pos+0x2ae/0x360
[  667.521528][ T5897]  ? ksys_write+0x71/0x240
[  667.525932][ T5897]  ksys_write+0x143/0x240
[  667.530245][ T5897]  ? __ia32_sys_read+0x80/0x80
[  667.535009][ T5897]  ? lockdep_hardirqs_on+0x94/0x140
[  667.540195][ T5897]  do_syscall_64+0x4c/0xa0
[  667.544602][ T5897]  ? clear_bhb_loop+0x60/0xb0
[  667.549260][ T5897]  ? clear_bhb_loop+0x60/0xb0
[  667.553942][ T5897]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  667.559850][ T5897] RIP: 0033:0x7f07a958e1ff
[  667.564256][ T5897] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  667.583865][ T5897] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  667.592367][ T5897] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  667.600337][ T5897] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  667.608292][ T5897] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  667.616253][ T5897] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  667.624208][ T5897] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  667.632172][ T5897]  </TASK>
[  667.665706][ T5902] FAULT_INJECTION: forcing a failure.
[  667.665706][ T5902] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  667.679692][ T5902] CPU: 0 PID: 5902 Comm: syz.0.379 Not tainted syzkaller #0
[  667.686989][ T5902] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  667.697035][ T5902] Call Trace:
[  667.700305][ T5902]  <TASK>
[  667.703220][ T5902]  dump_stack_lvl+0x168/0x22e
[  667.707893][ T5902]  ? show_regs_print_info+0x12/0x12
[  667.713078][ T5902]  ? load_image+0x3b0/0x3b0
[  667.717576][ T5902]  ? __lock_acquire+0x7c50/0x7c50
[  667.722589][ T5902]  should_fail_ex+0x399/0x4d0
[  667.727323][ T5902]  _copy_from_user+0x2c/0x170
[  667.731992][ T5902]  kstrtouint_from_user+0xbe/0x150
[  667.737091][ T5902]  ? kstrtol_from_user+0x150/0x150
[  667.742196][ T5902]  proc_fail_nth_write+0x85/0x1f0
[  667.747209][ T5902]  ? proc_fail_nth_read+0x210/0x210
[  667.752387][ T5902]  ? common_file_perm+0x171/0x1c0
[  667.757403][ T5902]  ? proc_fail_nth_read+0x210/0x210
[  667.762583][ T5902]  vfs_write+0x2c4/0x960
[  667.766817][ T5902]  ? file_end_write+0x250/0x250
[  667.771657][ T5902]  ? __fget_files+0x28/0x4d0
[  667.776241][ T5902]  ? __fget_files+0x44a/0x4d0
[  667.780908][ T5902]  ? __fdget_pos+0x2ae/0x360
[  667.785487][ T5902]  ? ksys_write+0x71/0x240
[  667.789911][ T5902]  ksys_write+0x143/0x240
[  667.794236][ T5902]  ? __ia32_sys_read+0x80/0x80
[  667.798994][ T5902]  ? lockdep_hardirqs_on+0x94/0x140
[  667.804186][ T5902]  do_syscall_64+0x4c/0xa0
[  667.808686][ T5902]  ? clear_bhb_loop+0x60/0xb0
[  667.813359][ T5902]  ? clear_bhb_loop+0x60/0xb0
[  667.818030][ T5902]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  667.823919][ T5902] RIP: 0033:0x7f07a958e1ff
[  667.828334][ T5902] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  667.847933][ T5902] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  667.856339][ T5902] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  667.864301][ T5902] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  667.872264][ T5902] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  667.880224][ T5902] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  667.888187][ T5902] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  667.896164][ T5902]  </TASK>
[  667.929345][ T5904] FAULT_INJECTION: forcing a failure.
[  667.929345][ T5904] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  667.943121][ T5904] CPU: 0 PID: 5904 Comm: syz.0.380 Not tainted syzkaller #0
[  667.950437][ T5904] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  667.960653][ T5904] Call Trace:
[  667.963919][ T5904]  <TASK>
[  667.966838][ T5904]  dump_stack_lvl+0x168/0x22e
[  667.971514][ T5904]  ? show_regs_print_info+0x12/0x12
[  667.976706][ T5904]  ? load_image+0x3b0/0x3b0
[  667.981213][ T5904]  ? __lock_acquire+0x7c50/0x7c50
[  667.986404][ T5904]  should_fail_ex+0x399/0x4d0
[  667.991102][ T5904]  _copy_from_user+0x2c/0x170
[  667.995776][ T5904]  kstrtouint_from_user+0xbe/0x150
[  668.000892][ T5904]  ? kstrtol_from_user+0x150/0x150
[  668.006009][ T5904]  proc_fail_nth_write+0x85/0x1f0
[  668.011020][ T5904]  ? proc_fail_nth_read+0x210/0x210
[  668.016207][ T5904]  ? common_file_perm+0x171/0x1c0
[  668.021225][ T5904]  ? proc_fail_nth_read+0x210/0x210
[  668.026444][ T5904]  vfs_write+0x2c4/0x960
[  668.030681][ T5904]  ? file_end_write+0x250/0x250
[  668.035517][ T5904]  ? __fget_files+0x28/0x4d0
[  668.040091][ T5904]  ? __fget_files+0x44a/0x4d0
[  668.045065][ T5904]  ? __fdget_pos+0x2ae/0x360
[  668.049740][ T5904]  ? ksys_write+0x71/0x240
[  668.054154][ T5904]  ksys_write+0x143/0x240
[  668.058477][ T5904]  ? __ia32_sys_read+0x80/0x80
[  668.063236][ T5904]  ? lockdep_hardirqs_on+0x94/0x140
[  668.068430][ T5904]  do_syscall_64+0x4c/0xa0
[  668.072841][ T5904]  ? clear_bhb_loop+0x60/0xb0
[  668.077511][ T5904]  ? clear_bhb_loop+0x60/0xb0
[  668.082184][ T5904]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  668.088071][ T5904] RIP: 0033:0x7f07a958e1ff
[  668.092476][ T5904] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  668.112080][ T5904] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  668.120486][ T5904] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  668.128447][ T5904] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  668.136426][ T5904] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  668.144403][ T5904] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  668.152379][ T5904] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  668.160362][ T5904]  </TASK>
[  668.199336][ T5909] FAULT_INJECTION: forcing a failure.
[  668.199336][ T5909] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  668.212586][ T5909] CPU: 0 PID: 5909 Comm: syz.0.381 Not tainted syzkaller #0
[  668.219869][ T5909] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  668.229912][ T5909] Call Trace:
[  668.233179][ T5909]  <TASK>
[  668.236094][ T5909]  dump_stack_lvl+0x168/0x22e
[  668.240763][ T5909]  ? show_regs_print_info+0x12/0x12
[  668.245950][ T5909]  ? load_image+0x3b0/0x3b0
[  668.250442][ T5909]  ? __lock_acquire+0x7c50/0x7c50
[  668.255458][ T5909]  should_fail_ex+0x399/0x4d0
[  668.260125][ T5909]  _copy_from_user+0x2c/0x170
[  668.264802][ T5909]  kstrtouint_from_user+0xbe/0x150
[  668.269918][ T5909]  ? kstrtol_from_user+0x150/0x150
[  668.275022][ T5909]  proc_fail_nth_write+0x85/0x1f0
[  668.280028][ T5909]  ? proc_fail_nth_read+0x210/0x210
[  668.285217][ T5909]  ? common_file_perm+0x171/0x1c0
[  668.290277][ T5909]  ? proc_fail_nth_read+0x210/0x210
[  668.295462][ T5909]  vfs_write+0x2c4/0x960
[  668.299704][ T5909]  ? file_end_write+0x250/0x250
[  668.304537][ T5909]  ? __fget_files+0x28/0x4d0
[  668.309195][ T5909]  ? __fget_files+0x44a/0x4d0
[  668.313866][ T5909]  ? __fdget_pos+0x2ae/0x360
[  668.318455][ T5909]  ? ksys_write+0x71/0x240
[  668.322867][ T5909]  ksys_write+0x143/0x240
[  668.327190][ T5909]  ? __ia32_sys_read+0x80/0x80
[  668.331947][ T5909]  ? lockdep_hardirqs_on+0x94/0x140
[  668.337138][ T5909]  do_syscall_64+0x4c/0xa0
[  668.341546][ T5909]  ? clear_bhb_loop+0x60/0xb0
[  668.346211][ T5909]  ? clear_bhb_loop+0x60/0xb0
[  668.350879][ T5909]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  668.356760][ T5909] RIP: 0033:0x7f07a958e1ff
[  668.361167][ T5909] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  668.380763][ T5909] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  668.389169][ T5909] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
2026/01/15 03:36:26 executed programs: 366
[  668.397129][ T5909] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  668.405096][ T5909] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  668.413056][ T5909] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  668.421013][ T5909] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  668.428990][ T5909]  </TASK>
[  668.460772][ T5911] FAULT_INJECTION: forcing a failure.
[  668.460772][ T5911] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  668.473990][ T5911] CPU: 0 PID: 5911 Comm: syz.0.382 Not tainted syzkaller #0
[  668.481275][ T5911] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  668.491340][ T5911] Call Trace:
[  668.494620][ T5911]  <TASK>
[  668.497537][ T5911]  dump_stack_lvl+0x168/0x22e
[  668.502207][ T5911]  ? show_regs_print_info+0x12/0x12
[  668.507392][ T5911]  ? load_image+0x3b0/0x3b0
[  668.511884][ T5911]  ? __lock_acquire+0x7c50/0x7c50
[  668.516903][ T5911]  should_fail_ex+0x399/0x4d0
[  668.521570][ T5911]  _copy_from_user+0x2c/0x170
[  668.526229][ T5911]  kstrtouint_from_user+0xbe/0x150
[  668.531327][ T5911]  ? kstrtol_from_user+0x150/0x150
[  668.536431][ T5911]  proc_fail_nth_write+0x85/0x1f0
[  668.541437][ T5911]  ? proc_fail_nth_read+0x210/0x210
[  668.546877][ T5911]  ? common_file_perm+0x171/0x1c0
[  668.551900][ T5911]  ? proc_fail_nth_read+0x210/0x210
[  668.557082][ T5911]  vfs_write+0x2c4/0x960
[  668.561316][ T5911]  ? file_end_write+0x250/0x250
[  668.566151][ T5911]  ? __fget_files+0x28/0x4d0
[  668.570733][ T5911]  ? __fget_files+0x44a/0x4d0
[  668.575426][ T5911]  ? __fdget_pos+0x2ae/0x360
[  668.580004][ T5911]  ? ksys_write+0x71/0x240
[  668.584421][ T5911]  ksys_write+0x143/0x240
[  668.588746][ T5911]  ? __ia32_sys_read+0x80/0x80
[  668.593505][ T5911]  ? lockdep_hardirqs_on+0x94/0x140
[  668.598698][ T5911]  do_syscall_64+0x4c/0xa0
[  668.603112][ T5911]  ? clear_bhb_loop+0x60/0xb0
[  668.607778][ T5911]  ? clear_bhb_loop+0x60/0xb0
[  668.612457][ T5911]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  668.618426][ T5911] RIP: 0033:0x7f07a958e1ff
[  668.622834][ T5911] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  668.642433][ T5911] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  668.650837][ T5911] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  668.658801][ T5911] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  668.666762][ T5911] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  668.674719][ T5911] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  668.682676][ T5911] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  668.690650][ T5911]  </TASK>
[  668.719102][ T5913] FAULT_INJECTION: forcing a failure.
[  668.719102][ T5913] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  668.732391][ T5913] CPU: 1 PID: 5913 Comm: syz.0.383 Not tainted syzkaller #0
[  668.739692][ T5913] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  668.749735][ T5913] Call Trace:
[  668.753000][ T5913]  <TASK>
[  668.755922][ T5913]  dump_stack_lvl+0x168/0x22e
[  668.760589][ T5913]  ? show_regs_print_info+0x12/0x12
[  668.765784][ T5913]  ? load_image+0x3b0/0x3b0
[  668.770274][ T5913]  ? __lock_acquire+0x7c50/0x7c50
[  668.775290][ T5913]  should_fail_ex+0x399/0x4d0
[  668.779961][ T5913]  _copy_from_user+0x2c/0x170
[  668.784625][ T5913]  kstrtouint_from_user+0xbe/0x150
[  668.789897][ T5913]  ? kstrtol_from_user+0x150/0x150
[  668.795017][ T5913]  proc_fail_nth_write+0x85/0x1f0
[  668.800044][ T5913]  ? proc_fail_nth_read+0x210/0x210
[  668.805223][ T5913]  ? common_file_perm+0x171/0x1c0
[  668.810242][ T5913]  ? proc_fail_nth_read+0x210/0x210
[  668.815430][ T5913]  vfs_write+0x2c4/0x960
[  668.819661][ T5913]  ? file_end_write+0x250/0x250
[  668.824508][ T5913]  ? __fget_files+0x28/0x4d0
[  668.829082][ T5913]  ? __fget_files+0x44a/0x4d0
[  668.833767][ T5913]  ? __fdget_pos+0x2ae/0x360
[  668.838396][ T5913]  ? ksys_write+0x71/0x240
[  668.842889][ T5913]  ksys_write+0x143/0x240
[  668.847208][ T5913]  ? __ia32_sys_read+0x80/0x80
[  668.851957][ T5913]  ? lockdep_hardirqs_on+0x94/0x140
[  668.857145][ T5913]  do_syscall_64+0x4c/0xa0
[  668.861549][ T5913]  ? clear_bhb_loop+0x60/0xb0
[  668.866395][ T5913]  ? clear_bhb_loop+0x60/0xb0
[  668.871057][ T5913]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  668.876956][ T5913] RIP: 0033:0x7f07a958e1ff
[  668.881359][ T5913] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  668.901217][ T5913] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  668.909629][ T5913] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  668.917594][ T5913] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  668.925558][ T5913] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  668.933512][ T5913] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  668.941490][ T5913] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  668.949466][ T5913]  </TASK>
[  668.993387][ T5916] FAULT_INJECTION: forcing a failure.
[  668.993387][ T5916] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  669.007532][ T5916] CPU: 1 PID: 5916 Comm: syz.0.384 Not tainted syzkaller #0
[  669.014824][ T5916] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  669.024876][ T5916] Call Trace:
[  669.028145][ T5916]  <TASK>
[  669.031063][ T5916]  dump_stack_lvl+0x168/0x22e
[  669.035736][ T5916]  ? show_regs_print_info+0x12/0x12
[  669.040926][ T5916]  ? load_image+0x3b0/0x3b0
[  669.045421][ T5916]  ? __lock_acquire+0x7c50/0x7c50
[  669.050437][ T5916]  should_fail_ex+0x399/0x4d0
[  669.055110][ T5916]  _copy_from_user+0x2c/0x170
[  669.059788][ T5916]  kstrtouint_from_user+0xbe/0x150
[  669.064907][ T5916]  ? kstrtol_from_user+0x150/0x150
[  669.070033][ T5916]  proc_fail_nth_write+0x85/0x1f0
[  669.075076][ T5916]  ? proc_fail_nth_read+0x210/0x210
[  669.080267][ T5916]  ? common_file_perm+0x171/0x1c0
[  669.085294][ T5916]  ? proc_fail_nth_read+0x210/0x210
[  669.090484][ T5916]  vfs_write+0x2c4/0x960
[  669.094725][ T5916]  ? file_end_write+0x250/0x250
[  669.099573][ T5916]  ? __fget_files+0x28/0x4d0
[  669.104164][ T5916]  ? __fget_files+0x44a/0x4d0
[  669.108840][ T5916]  ? __fdget_pos+0x2ae/0x360
[  669.113419][ T5916]  ? ksys_write+0x71/0x240
[  669.117832][ T5916]  ksys_write+0x143/0x240
[  669.122157][ T5916]  ? __ia32_sys_read+0x80/0x80
[  669.126918][ T5916]  ? lockdep_hardirqs_on+0x94/0x140
[  669.132111][ T5916]  do_syscall_64+0x4c/0xa0
[  669.136531][ T5916]  ? clear_bhb_loop+0x60/0xb0
[  669.141251][ T5916]  ? clear_bhb_loop+0x60/0xb0
[  669.145922][ T5916]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  669.151806][ T5916] RIP: 0033:0x7f07a958e1ff
[  669.156213][ T5916] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  669.175807][ T5916] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  669.184257][ T5916] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  669.192216][ T5916] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  669.200173][ T5916] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  669.208132][ T5916] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  669.216093][ T5916] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  669.224074][ T5916]  </TASK>
[  669.269500][ T5920] FAULT_INJECTION: forcing a failure.
[  669.269500][ T5920] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  669.282963][ T5920] CPU: 0 PID: 5920 Comm: syz.0.385 Not tainted syzkaller #0
[  669.290268][ T5920] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  669.300319][ T5920] Call Trace:
[  669.303589][ T5920]  <TASK>
[  669.306519][ T5920]  dump_stack_lvl+0x168/0x22e
[  669.311202][ T5920]  ? show_regs_print_info+0x12/0x12
[  669.316399][ T5920]  ? load_image+0x3b0/0x3b0
[  669.320891][ T5920]  ? __lock_acquire+0x7c50/0x7c50
[  669.325920][ T5920]  should_fail_ex+0x399/0x4d0
[  669.330592][ T5920]  _copy_from_user+0x2c/0x170
[  669.335283][ T5920]  kstrtouint_from_user+0xbe/0x150
[  669.340407][ T5920]  ? kstrtol_from_user+0x150/0x150
[  669.345544][ T5920]  proc_fail_nth_write+0x85/0x1f0
[  669.350578][ T5920]  ? proc_fail_nth_read+0x210/0x210
[  669.355777][ T5920]  ? common_file_perm+0x171/0x1c0
[  669.360805][ T5920]  ? proc_fail_nth_read+0x210/0x210
[  669.365996][ T5920]  vfs_write+0x2c4/0x960
[  669.370240][ T5920]  ? file_end_write+0x250/0x250
[  669.375085][ T5920]  ? __fget_files+0x28/0x4d0
[  669.379666][ T5920]  ? __fget_files+0x44a/0x4d0
[  669.384436][ T5920]  ? __fdget_pos+0x2ae/0x360
[  669.389023][ T5920]  ? ksys_write+0x71/0x240
[  669.393434][ T5920]  ksys_write+0x143/0x240
[  669.397781][ T5920]  ? __ia32_sys_read+0x80/0x80
[  669.402544][ T5920]  ? lockdep_hardirqs_on+0x94/0x140
[  669.407738][ T5920]  do_syscall_64+0x4c/0xa0
[  669.412180][ T5920]  ? clear_bhb_loop+0x60/0xb0
[  669.416853][ T5920]  ? clear_bhb_loop+0x60/0xb0
[  669.421524][ T5920]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  669.427409][ T5920] RIP: 0033:0x7f07a958e1ff
[  669.431815][ T5920] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  669.451413][ T5920] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  669.459816][ T5920] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  669.467777][ T5920] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  669.475824][ T5920] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  669.483785][ T5920] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  669.491745][ T5920] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  669.499719][ T5920]  </TASK>
[  669.531593][ T5922] FAULT_INJECTION: forcing a failure.
[  669.531593][ T5922] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  669.545339][ T5922] CPU: 0 PID: 5922 Comm: syz.0.386 Not tainted syzkaller #0
[  669.552707][ T5922] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  669.562756][ T5922] Call Trace:
[  669.566022][ T5922]  <TASK>
[  669.568936][ T5922]  dump_stack_lvl+0x168/0x22e
[  669.573606][ T5922]  ? show_regs_print_info+0x12/0x12
[  669.578791][ T5922]  ? load_image+0x3b0/0x3b0
[  669.583281][ T5922]  ? __lock_acquire+0x7c50/0x7c50
[  669.588294][ T5922]  should_fail_ex+0x399/0x4d0
[  669.592962][ T5922]  _copy_from_user+0x2c/0x170
[  669.597637][ T5922]  kstrtouint_from_user+0xbe/0x150
[  669.602747][ T5922]  ? kstrtol_from_user+0x150/0x150
[  669.607850][ T5922]  proc_fail_nth_write+0x85/0x1f0
[  669.612859][ T5922]  ? proc_fail_nth_read+0x210/0x210
[  669.618046][ T5922]  ? common_file_perm+0x171/0x1c0
[  669.623063][ T5922]  ? proc_fail_nth_read+0x210/0x210
[  669.628246][ T5922]  vfs_write+0x2c4/0x960
[  669.632474][ T5922]  ? file_end_write+0x250/0x250
[  669.637311][ T5922]  ? __fget_files+0x28/0x4d0
[  669.641910][ T5922]  ? __fget_files+0x44a/0x4d0
[  669.646575][ T5922]  ? __fdget_pos+0x2ae/0x360
[  669.651147][ T5922]  ? ksys_write+0x71/0x240
[  669.655669][ T5922]  ksys_write+0x143/0x240
[  669.659987][ T5922]  ? __ia32_sys_read+0x80/0x80
[  669.664754][ T5922]  ? lockdep_hardirqs_on+0x94/0x140
[  669.669936][ T5922]  do_syscall_64+0x4c/0xa0
[  669.674343][ T5922]  ? clear_bhb_loop+0x60/0xb0
[  669.679002][ T5922]  ? clear_bhb_loop+0x60/0xb0
[  669.683665][ T5922]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  669.689552][ T5922] RIP: 0033:0x7f07a958e1ff
[  669.693951][ T5922] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  669.713545][ T5922] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  669.721949][ T5922] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  669.729919][ T5922] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  669.737875][ T5922] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  669.745828][ T5922] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  669.753784][ T5922] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  669.761763][ T5922]  </TASK>
[  669.793089][ T5924] FAULT_INJECTION: forcing a failure.
[  669.793089][ T5924] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  669.806409][ T5924] CPU: 0 PID: 5924 Comm: syz.0.387 Not tainted syzkaller #0
[  669.813695][ T5924] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  669.823846][ T5924] Call Trace:
[  669.827117][ T5924]  <TASK>
[  669.830033][ T5924]  dump_stack_lvl+0x168/0x22e
[  669.834709][ T5924]  ? show_regs_print_info+0x12/0x12
[  669.839898][ T5924]  ? load_image+0x3b0/0x3b0
[  669.844390][ T5924]  ? __lock_acquire+0x7c50/0x7c50
[  669.849406][ T5924]  should_fail_ex+0x399/0x4d0
[  669.854120][ T5924]  _copy_from_user+0x2c/0x170
[  669.858781][ T5924]  kstrtouint_from_user+0xbe/0x150
[  669.863888][ T5924]  ? kstrtol_from_user+0x150/0x150
[  669.869031][ T5924]  proc_fail_nth_write+0x85/0x1f0
[  669.874048][ T5924]  ? proc_fail_nth_read+0x210/0x210
[  669.879231][ T5924]  ? common_file_perm+0x171/0x1c0
[  669.884246][ T5924]  ? proc_fail_nth_read+0x210/0x210
[  669.889427][ T5924]  vfs_write+0x2c4/0x960
[  669.893659][ T5924]  ? file_end_write+0x250/0x250
[  669.898512][ T5924]  ? __fget_files+0x28/0x4d0
[  669.903088][ T5924]  ? __fget_files+0x44a/0x4d0
[  669.907761][ T5924]  ? __fdget_pos+0x2ae/0x360
[  669.912337][ T5924]  ? ksys_write+0x71/0x240
[  669.916756][ T5924]  ksys_write+0x143/0x240
[  669.921094][ T5924]  ? __ia32_sys_read+0x80/0x80
[  669.925866][ T5924]  ? lockdep_hardirqs_on+0x94/0x140
[  669.931062][ T5924]  do_syscall_64+0x4c/0xa0
[  669.935481][ T5924]  ? clear_bhb_loop+0x60/0xb0
[  669.940150][ T5924]  ? clear_bhb_loop+0x60/0xb0
[  669.944823][ T5924]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  669.950706][ T5924] RIP: 0033:0x7f07a958e1ff
[  669.955140][ T5924] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  669.974739][ T5924] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  669.983146][ T5924] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  669.991109][ T5924] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  669.999071][ T5924] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  670.007035][ T5924] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  670.015018][ T5924] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  670.022993][ T5924]  </TASK>
[  670.055364][ T5926] FAULT_INJECTION: forcing a failure.
[  670.055364][ T5926] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  670.068811][ T5926] CPU: 0 PID: 5926 Comm: syz.0.388 Not tainted syzkaller #0
[  670.076100][ T5926] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  670.086235][ T5926] Call Trace:
[  670.089500][ T5926]  <TASK>
[  670.092416][ T5926]  dump_stack_lvl+0x168/0x22e
[  670.097086][ T5926]  ? show_regs_print_info+0x12/0x12
[  670.102272][ T5926]  ? load_image+0x3b0/0x3b0
[  670.106777][ T5926]  ? __lock_acquire+0x7c50/0x7c50
[  670.111833][ T5926]  should_fail_ex+0x399/0x4d0
[  670.116647][ T5926]  _copy_from_user+0x2c/0x170
[  670.121327][ T5926]  kstrtouint_from_user+0xbe/0x150
[  670.126436][ T5926]  ? kstrtol_from_user+0x150/0x150
[  670.131547][ T5926]  proc_fail_nth_write+0x85/0x1f0
[  670.136653][ T5926]  ? proc_fail_nth_read+0x210/0x210
[  670.141838][ T5926]  ? common_file_perm+0x171/0x1c0
[  670.146861][ T5926]  ? proc_fail_nth_read+0x210/0x210
[  670.152050][ T5926]  vfs_write+0x2c4/0x960
[  670.156467][ T5926]  ? file_end_write+0x250/0x250
[  670.161309][ T5926]  ? __fget_files+0x28/0x4d0
[  670.165896][ T5926]  ? __fget_files+0x44a/0x4d0
[  670.170575][ T5926]  ? __fdget_pos+0x2ae/0x360
[  670.175157][ T5926]  ? ksys_write+0x71/0x240
[  670.179574][ T5926]  ksys_write+0x143/0x240
[  670.183920][ T5926]  ? __ia32_sys_read+0x80/0x80
[  670.188678][ T5926]  ? lockdep_hardirqs_on+0x94/0x140
[  670.193868][ T5926]  do_syscall_64+0x4c/0xa0
[  670.198279][ T5926]  ? clear_bhb_loop+0x60/0xb0
[  670.202944][ T5926]  ? clear_bhb_loop+0x60/0xb0
[  670.207667][ T5926]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  670.213549][ T5926] RIP: 0033:0x7f07a958e1ff
[  670.217957][ T5926] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  670.237561][ T5926] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  670.245975][ T5926] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  670.253937][ T5926] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  670.261893][ T5926] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  670.269943][ T5926] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  670.277905][ T5926] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  670.285881][ T5926]  </TASK>
[  670.324392][ T5931] FAULT_INJECTION: forcing a failure.
[  670.324392][ T5931] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  670.338575][ T5931] CPU: 0 PID: 5931 Comm: syz.0.389 Not tainted syzkaller #0
[  670.345869][ T5931] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  670.355917][ T5931] Call Trace:
[  670.359188][ T5931]  <TASK>
[  670.362111][ T5931]  dump_stack_lvl+0x168/0x22e
[  670.366779][ T5931]  ? show_regs_print_info+0x12/0x12
[  670.371962][ T5931]  ? load_image+0x3b0/0x3b0
[  670.376454][ T5931]  ? __lock_acquire+0x7c50/0x7c50
[  670.381468][ T5931]  should_fail_ex+0x399/0x4d0
[  670.386138][ T5931]  _copy_from_user+0x2c/0x170
[  670.390801][ T5931]  kstrtouint_from_user+0xbe/0x150
[  670.395909][ T5931]  ? kstrtol_from_user+0x150/0x150
[  670.401013][ T5931]  proc_fail_nth_write+0x85/0x1f0
[  670.406018][ T5931]  ? proc_fail_nth_read+0x210/0x210
[  670.411199][ T5931]  ? common_file_perm+0x171/0x1c0
[  670.416209][ T5931]  ? proc_fail_nth_read+0x210/0x210
[  670.421388][ T5931]  vfs_write+0x2c4/0x960
[  670.425621][ T5931]  ? file_end_write+0x250/0x250
[  670.430475][ T5931]  ? __fget_files+0x28/0x4d0
[  670.435054][ T5931]  ? __fget_files+0x44a/0x4d0
[  670.439729][ T5931]  ? __fdget_pos+0x2ae/0x360
[  670.444318][ T5931]  ? ksys_write+0x71/0x240
[  670.448720][ T5931]  ksys_write+0x143/0x240
[  670.453034][ T5931]  ? __ia32_sys_read+0x80/0x80
[  670.457784][ T5931]  ? lockdep_hardirqs_on+0x94/0x140
[  670.462966][ T5931]  do_syscall_64+0x4c/0xa0
[  670.467371][ T5931]  ? clear_bhb_loop+0x60/0xb0
[  670.472030][ T5931]  ? clear_bhb_loop+0x60/0xb0
[  670.476699][ T5931]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  670.482584][ T5931] RIP: 0033:0x7f07a958e1ff
[  670.486984][ T5931] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  670.506577][ T5931] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  670.514989][ T5931] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  670.522959][ T5931] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  670.530947][ T5931] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  670.538919][ T5931] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  670.546882][ T5931] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  670.554853][ T5931]  </TASK>
[  670.596187][ T5933] FAULT_INJECTION: forcing a failure.
[  670.596187][ T5933] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  670.609293][ T5933] CPU: 1 PID: 5933 Comm: syz.0.390 Not tainted syzkaller #0
[  670.616569][ T5933] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  670.626611][ T5933] Call Trace:
[  670.629875][ T5933]  <TASK>
[  670.632789][ T5933]  dump_stack_lvl+0x168/0x22e
[  670.637461][ T5933]  ? show_regs_print_info+0x12/0x12
[  670.642653][ T5933]  ? load_image+0x3b0/0x3b0
[  670.647158][ T5933]  ? __lock_acquire+0x7c50/0x7c50
[  670.652200][ T5933]  should_fail_ex+0x399/0x4d0
[  670.656879][ T5933]  _copy_from_user+0x2c/0x170
[  670.661545][ T5933]  kstrtouint_from_user+0xbe/0x150
[  670.666649][ T5933]  ? kstrtol_from_user+0x150/0x150
[  670.671753][ T5933]  proc_fail_nth_write+0x85/0x1f0
[  670.676764][ T5933]  ? proc_fail_nth_read+0x210/0x210
[  670.681953][ T5933]  ? common_file_perm+0x171/0x1c0
[  670.686985][ T5933]  ? proc_fail_nth_read+0x210/0x210
[  670.692164][ T5933]  vfs_write+0x2c4/0x960
[  670.696398][ T5933]  ? file_end_write+0x250/0x250
[  670.701241][ T5933]  ? __fget_files+0x28/0x4d0
[  670.705815][ T5933]  ? __fget_files+0x44a/0x4d0
[  670.710484][ T5933]  ? __fdget_pos+0x2ae/0x360
[  670.715062][ T5933]  ? ksys_write+0x71/0x240
[  670.719465][ T5933]  ksys_write+0x143/0x240
[  670.723785][ T5933]  ? __ia32_sys_read+0x80/0x80
[  670.728537][ T5933]  ? lockdep_hardirqs_on+0x94/0x140
[  670.733726][ T5933]  do_syscall_64+0x4c/0xa0
[  670.738142][ T5933]  ? clear_bhb_loop+0x60/0xb0
[  670.742814][ T5933]  ? clear_bhb_loop+0x60/0xb0
[  670.747499][ T5933]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  670.753384][ T5933] RIP: 0033:0x7f07a958e1ff
[  670.757791][ T5933] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  670.777388][ T5933] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  670.785792][ T5933] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  670.793758][ T5933] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  670.801731][ T5933] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  670.809688][ T5933] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  670.817645][ T5933] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  670.825612][ T5933]  </TASK>
[  670.856070][ T5938] FAULT_INJECTION: forcing a failure.
[  670.856070][ T5938] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  670.869828][ T5938] CPU: 0 PID: 5938 Comm: syz.0.391 Not tainted syzkaller #0
[  670.877111][ T5938] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  670.887157][ T5938] Call Trace:
[  670.890422][ T5938]  <TASK>
[  670.893341][ T5938]  dump_stack_lvl+0x168/0x22e
[  670.898012][ T5938]  ? show_regs_print_info+0x12/0x12
[  670.903196][ T5938]  ? load_image+0x3b0/0x3b0
[  670.907703][ T5938]  ? __lock_acquire+0x7c50/0x7c50
[  670.912746][ T5938]  should_fail_ex+0x399/0x4d0
[  670.917438][ T5938]  _copy_from_user+0x2c/0x170
[  670.922113][ T5938]  kstrtouint_from_user+0xbe/0x150
[  670.927220][ T5938]  ? kstrtol_from_user+0x150/0x150
[  670.932335][ T5938]  proc_fail_nth_write+0x85/0x1f0
[  670.937348][ T5938]  ? proc_fail_nth_read+0x210/0x210
[  670.942546][ T5938]  ? common_file_perm+0x171/0x1c0
[  670.947821][ T5938]  ? proc_fail_nth_read+0x210/0x210
[  670.953012][ T5938]  vfs_write+0x2c4/0x960
[  670.957253][ T5938]  ? file_end_write+0x250/0x250
[  670.962103][ T5938]  ? __fget_files+0x28/0x4d0
[  670.966690][ T5938]  ? __fget_files+0x44a/0x4d0
[  670.971369][ T5938]  ? __fdget_pos+0x2ae/0x360
[  670.975952][ T5938]  ? ksys_write+0x71/0x240
[  670.980370][ T5938]  ksys_write+0x143/0x240
[  670.984697][ T5938]  ? __ia32_sys_read+0x80/0x80
[  670.989450][ T5938]  ? lockdep_hardirqs_on+0x94/0x140
[  670.994637][ T5938]  do_syscall_64+0x4c/0xa0
[  670.999047][ T5938]  ? clear_bhb_loop+0x60/0xb0
[  671.003725][ T5938]  ? clear_bhb_loop+0x60/0xb0
[  671.008388][ T5938]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  671.014272][ T5938] RIP: 0033:0x7f07a958e1ff
[  671.018671][ T5938] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  671.038271][ T5938] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  671.046685][ T5938] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  671.054652][ T5938] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  671.062628][ T5938] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  671.070584][ T5938] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  671.078541][ T5938] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  671.086514][ T5938]  </TASK>
[  671.128355][ T5943] FAULT_INJECTION: forcing a failure.
[  671.128355][ T5943] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  671.142009][ T5943] CPU: 1 PID: 5943 Comm: syz.0.392 Not tainted syzkaller #0
[  671.149297][ T5943] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  671.159366][ T5943] Call Trace:
[  671.162629][ T5943]  <TASK>
[  671.165550][ T5943]  dump_stack_lvl+0x168/0x22e
[  671.170218][ T5943]  ? show_regs_print_info+0x12/0x12
[  671.175402][ T5943]  ? load_image+0x3b0/0x3b0
[  671.179915][ T5943]  ? __lock_acquire+0x7c50/0x7c50
[  671.184964][ T5943]  should_fail_ex+0x399/0x4d0
[  671.189651][ T5943]  _copy_from_user+0x2c/0x170
[  671.194324][ T5943]  kstrtouint_from_user+0xbe/0x150
[  671.199445][ T5943]  ? kstrtol_from_user+0x150/0x150
[  671.204567][ T5943]  proc_fail_nth_write+0x85/0x1f0
[  671.209604][ T5943]  ? proc_fail_nth_read+0x210/0x210
[  671.214797][ T5943]  ? common_file_perm+0x171/0x1c0
[  671.219825][ T5943]  ? proc_fail_nth_read+0x210/0x210
[  671.225019][ T5943]  vfs_write+0x2c4/0x960
[  671.229288][ T5943]  ? file_end_write+0x250/0x250
[  671.234127][ T5943]  ? __fget_files+0x28/0x4d0
[  671.238704][ T5943]  ? __fget_files+0x44a/0x4d0
[  671.243371][ T5943]  ? __fdget_pos+0x2ae/0x360
[  671.247952][ T5943]  ? ksys_write+0x71/0x240
[  671.252373][ T5943]  ksys_write+0x143/0x240
[  671.256711][ T5943]  ? __ia32_sys_read+0x80/0x80
[  671.261465][ T5943]  ? lockdep_hardirqs_on+0x94/0x140
[  671.266658][ T5943]  do_syscall_64+0x4c/0xa0
[  671.271067][ T5943]  ? clear_bhb_loop+0x60/0xb0
[  671.275782][ T5943]  ? clear_bhb_loop+0x60/0xb0
[  671.280458][ T5943]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  671.286346][ T5943] RIP: 0033:0x7f07a958e1ff
[  671.290749][ T5943] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  671.310439][ T5943] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  671.318973][ T5943] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  671.327027][ T5943] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  671.335014][ T5943] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  671.342978][ T5943] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  671.350957][ T5943] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  671.358951][ T5943]  </TASK>
[  671.389437][ T5948] FAULT_INJECTION: forcing a failure.
[  671.389437][ T5948] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  671.402646][ T5948] CPU: 1 PID: 5948 Comm: syz.0.393 Not tainted syzkaller #0
[  671.409930][ T5948] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  671.420077][ T5948] Call Trace:
[  671.423349][ T5948]  <TASK>
[  671.426270][ T5948]  dump_stack_lvl+0x168/0x22e
[  671.430961][ T5948]  ? show_regs_print_info+0x12/0x12
[  671.436263][ T5948]  ? load_image+0x3b0/0x3b0
[  671.440775][ T5948]  ? __lock_acquire+0x7c50/0x7c50
[  671.445887][ T5948]  should_fail_ex+0x399/0x4d0
[  671.450628][ T5948]  _copy_from_user+0x2c/0x170
[  671.455315][ T5948]  kstrtouint_from_user+0xbe/0x150
[  671.460428][ T5948]  ? kstrtol_from_user+0x150/0x150
[  671.465547][ T5948]  proc_fail_nth_write+0x85/0x1f0
[  671.470569][ T5948]  ? proc_fail_nth_read+0x210/0x210
[  671.475759][ T5948]  ? common_file_perm+0x171/0x1c0
[  671.480795][ T5948]  ? proc_fail_nth_read+0x210/0x210
[  671.485988][ T5948]  vfs_write+0x2c4/0x960
[  671.490238][ T5948]  ? file_end_write+0x250/0x250
[  671.495088][ T5948]  ? __fget_files+0x28/0x4d0
[  671.499665][ T5948]  ? __fget_files+0x44a/0x4d0
[  671.504364][ T5948]  ? __fdget_pos+0x2ae/0x360
[  671.508959][ T5948]  ? ksys_write+0x71/0x240
[  671.513363][ T5948]  ksys_write+0x143/0x240
[  671.517681][ T5948]  ? __ia32_sys_read+0x80/0x80
[  671.522432][ T5948]  ? lockdep_hardirqs_on+0x94/0x140
[  671.527628][ T5948]  do_syscall_64+0x4c/0xa0
[  671.532062][ T5948]  ? clear_bhb_loop+0x60/0xb0
[  671.536734][ T5948]  ? clear_bhb_loop+0x60/0xb0
[  671.541399][ T5948]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  671.547282][ T5948] RIP: 0033:0x7f07a958e1ff
[  671.551683][ T5948] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  671.571283][ T5948] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  671.579686][ T5948] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  671.587645][ T5948] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  671.595603][ T5948] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  671.603562][ T5948] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  671.611610][ T5948] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  671.619752][ T5948]  </TASK>
[  671.669054][ T5954] FAULT_INJECTION: forcing a failure.
[  671.669054][ T5954] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  671.683237][ T5954] CPU: 0 PID: 5954 Comm: syz.0.394 Not tainted syzkaller #0
[  671.690531][ T5954] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  671.700572][ T5954] Call Trace:
[  671.703842][ T5954]  <TASK>
[  671.706758][ T5954]  dump_stack_lvl+0x168/0x22e
[  671.711426][ T5954]  ? show_regs_print_info+0x12/0x12
[  671.716606][ T5954]  ? load_image+0x3b0/0x3b0
[  671.721119][ T5954]  ? __lock_acquire+0x7c50/0x7c50
[  671.726163][ T5954]  should_fail_ex+0x399/0x4d0
[  671.730848][ T5954]  _copy_from_user+0x2c/0x170
[  671.735523][ T5954]  kstrtouint_from_user+0xbe/0x150
[  671.740637][ T5954]  ? kstrtol_from_user+0x150/0x150
[  671.745753][ T5954]  proc_fail_nth_write+0x85/0x1f0
[  671.750768][ T5954]  ? proc_fail_nth_read+0x210/0x210
[  671.755957][ T5954]  ? common_file_perm+0x171/0x1c0
[  671.760978][ T5954]  ? proc_fail_nth_read+0x210/0x210
[  671.766165][ T5954]  vfs_write+0x2c4/0x960
[  671.770410][ T5954]  ? file_end_write+0x250/0x250
[  671.775257][ T5954]  ? __fget_files+0x28/0x4d0
[  671.779843][ T5954]  ? __fget_files+0x44a/0x4d0
[  671.784519][ T5954]  ? __fdget_pos+0x2ae/0x360
[  671.789098][ T5954]  ? ksys_write+0x71/0x240
[  671.793508][ T5954]  ksys_write+0x143/0x240
[  671.797842][ T5954]  ? __ia32_sys_read+0x80/0x80
[  671.802604][ T5954]  ? lockdep_hardirqs_on+0x94/0x140
[  671.807794][ T5954]  do_syscall_64+0x4c/0xa0
[  671.812209][ T5954]  ? clear_bhb_loop+0x60/0xb0
[  671.816885][ T5954]  ? clear_bhb_loop+0x60/0xb0
[  671.821552][ T5954]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  671.827435][ T5954] RIP: 0033:0x7f07a958e1ff
[  671.831844][ T5954] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  671.851436][ T5954] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  671.859843][ T5954] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  671.867815][ T5954] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  671.875777][ T5954] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  671.883736][ T5954] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  671.891706][ T5954] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  671.899676][ T5954]  </TASK>
[  671.932361][ T5959] FAULT_INJECTION: forcing a failure.
[  671.932361][ T5959] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  671.946132][ T5959] CPU: 1 PID: 5959 Comm: syz.0.395 Not tainted syzkaller #0
[  671.953415][ T5959] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  671.963468][ T5959] Call Trace:
[  671.966738][ T5959]  <TASK>
[  671.969659][ T5959]  dump_stack_lvl+0x168/0x22e
[  671.974331][ T5959]  ? show_regs_print_info+0x12/0x12
[  671.979515][ T5959]  ? load_image+0x3b0/0x3b0
[  671.984027][ T5959]  ? __lock_acquire+0x7c50/0x7c50
[  671.989081][ T5959]  should_fail_ex+0x399/0x4d0
[  671.993839][ T5959]  _copy_from_user+0x2c/0x170
[  671.998554][ T5959]  kstrtouint_from_user+0xbe/0x150
[  672.003682][ T5959]  ? kstrtol_from_user+0x150/0x150
[  672.008822][ T5959]  proc_fail_nth_write+0x85/0x1f0
[  672.013847][ T5959]  ? proc_fail_nth_read+0x210/0x210
[  672.019040][ T5959]  ? common_file_perm+0x171/0x1c0
[  672.024075][ T5959]  ? proc_fail_nth_read+0x210/0x210
[  672.029275][ T5959]  vfs_write+0x2c4/0x960
[  672.033515][ T5959]  ? file_end_write+0x250/0x250
[  672.038358][ T5959]  ? __fget_files+0x28/0x4d0
[  672.042940][ T5959]  ? __fget_files+0x44a/0x4d0
[  672.047614][ T5959]  ? __fdget_pos+0x2ae/0x360
[  672.052193][ T5959]  ? ksys_write+0x71/0x240
[  672.056604][ T5959]  ksys_write+0x143/0x240
[  672.060931][ T5959]  ? __ia32_sys_read+0x80/0x80
[  672.065688][ T5959]  ? lockdep_hardirqs_on+0x94/0x140
[  672.070876][ T5959]  do_syscall_64+0x4c/0xa0
[  672.075285][ T5959]  ? clear_bhb_loop+0x60/0xb0
[  672.079951][ T5959]  ? clear_bhb_loop+0x60/0xb0
[  672.084635][ T5959]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  672.090537][ T5959] RIP: 0033:0x7f07a958e1ff
[  672.094939][ T5959] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  672.114565][ T5959] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  672.122973][ T5959] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  672.130940][ T5959] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  672.138911][ T5959] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  672.146887][ T5959] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  672.154860][ T5959] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  672.162830][ T5959]  </TASK>
[  672.195569][ T5964] FAULT_INJECTION: forcing a failure.
[  672.195569][ T5964] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  672.208837][ T5964] CPU: 1 PID: 5964 Comm: syz.0.396 Not tainted syzkaller #0
[  672.216115][ T5964] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  672.226171][ T5964] Call Trace:
[  672.229450][ T5964]  <TASK>
[  672.232365][ T5964]  dump_stack_lvl+0x168/0x22e
[  672.237038][ T5964]  ? show_regs_print_info+0x12/0x12
[  672.242239][ T5964]  ? load_image+0x3b0/0x3b0
[  672.246755][ T5964]  ? __lock_acquire+0x7c50/0x7c50
[  672.251798][ T5964]  should_fail_ex+0x399/0x4d0
[  672.256479][ T5964]  _copy_from_user+0x2c/0x170
[  672.261156][ T5964]  kstrtouint_from_user+0xbe/0x150
[  672.266269][ T5964]  ? kstrtol_from_user+0x150/0x150
[  672.271382][ T5964]  proc_fail_nth_write+0x85/0x1f0
[  672.276414][ T5964]  ? proc_fail_nth_read+0x210/0x210
[  672.281629][ T5964]  ? common_file_perm+0x171/0x1c0
[  672.286665][ T5964]  ? proc_fail_nth_read+0x210/0x210
[  672.291862][ T5964]  vfs_write+0x2c4/0x960
[  672.296110][ T5964]  ? file_end_write+0x250/0x250
[  672.300957][ T5964]  ? __fget_files+0x28/0x4d0
[  672.305547][ T5964]  ? __fget_files+0x44a/0x4d0
[  672.310223][ T5964]  ? __fdget_pos+0x2ae/0x360
[  672.314814][ T5964]  ? ksys_write+0x71/0x240
[  672.319223][ T5964]  ksys_write+0x143/0x240
[  672.323548][ T5964]  ? __ia32_sys_read+0x80/0x80
[  672.328306][ T5964]  ? lockdep_hardirqs_on+0x94/0x140
[  672.333497][ T5964]  do_syscall_64+0x4c/0xa0
[  672.337906][ T5964]  ? clear_bhb_loop+0x60/0xb0
[  672.342573][ T5964]  ? clear_bhb_loop+0x60/0xb0
[  672.347249][ T5964]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  672.353149][ T5964] RIP: 0033:0x7f07a958e1ff
[  672.357575][ T5964] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  672.377185][ T5964] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  672.385597][ T5964] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  672.393560][ T5964] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  672.401551][ T5964] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  672.409514][ T5964] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  672.417485][ T5964] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  672.425466][ T5964]  </TASK>
[  672.469246][ T5970] FAULT_INJECTION: forcing a failure.
[  672.469246][ T5970] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  672.469895][ T5970] 
[  672.469900][ T5970] ======================================================
[  672.469903][ T5970] WARNING: possible circular locking dependency detected
[  672.469914][ T5970] syzkaller #0 Not tainted
[  672.469918][ T5970] ------------------------------------------------------
[  672.469922][ T5970] syz.0.397/5970 is trying to acquire lock:
[  672.469927][ T5970] ffffffff8c91f3a0 (console_owner){....}-{0:0}, at: console_emit_next_record+0x82d/0xc90
[  672.469957][ T5970] 
[  672.469957][ T5970] but task is already holding lock:
[  672.469960][ T5970] ffff8880b8e3ab18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xa5/0x140
[  672.469983][ T5970] 
[  672.469983][ T5970] which lock already depends on the new lock.
[  672.469983][ T5970] 
[  672.469986][ T5970] 
[  672.469986][ T5970] the existing dependency chain (in reverse order) is:
[  672.469989][ T5970] 
[  672.469989][ T5970] -> #4 (&rq->__lock){-.-.}-{2:2}:
[  672.470000][ T5970]        _raw_spin_lock_nested+0x2e/0x40
[  672.470012][ T5970]        raw_spin_rq_lock_nested+0x26/0x140
[  672.470021][ T5970]        task_fork_fair+0x5c/0x350
[  672.470031][ T5970]        sched_cgroup_fork+0x32c/0x3c0
[  672.470041][ T5970]        copy_process+0x24b8/0x4020
[  672.470050][ T5970]        kernel_clone+0x225/0x8b0
[  672.470057][ T5970]        user_mode_thread+0xda/0x130
[  672.470065][ T5970]        rest_init+0x23/0x300
[  672.470074][ T5970]        start_kernel+0x0/0x539
[  672.470082][ T5970]        start_kernel+0x490/0x539
[  672.470089][ T5970]        secondary_startup_64_no_verify+0xcf/0xdb
[  672.470101][ T5970] 
[  672.470101][ T5970] -> #3 (&p->pi_lock){-.-.}-{2:2}:
[  672.470112][ T5970]        _raw_spin_lock_irqsave+0xa4/0xf0
[  672.470120][ T5970]        try_to_wake_up+0x5c/0x1080
[  672.470130][ T5970]        __wake_up_common+0x2a4/0x4e0
[  672.470141][ T5970]        __wake_up+0x10e/0x190
[  672.470151][ T5970]        tty_port_default_wakeup+0x9e/0xf0
[  672.470159][ T5970]        serial8250_tx_chars+0x629/0x830
[  672.470168][ T5970]        serial8250_handle_irq+0x516/0x6d0
[  672.470177][ T5970]        serial8250_default_handle_irq+0xb4/0x1a0
[  672.470187][ T5970]        serial8250_interrupt+0x9b/0x1c0
[  672.470194][ T5970]        __handle_irq_event_percpu+0x298/0xa30
[  672.470203][ T5970]        handle_irq_event+0x87/0x1e0
[  672.470211][ T5970]        handle_edge_irq+0x243/0xb20
[  672.470220][ T5970]        __common_interrupt+0xd7/0x1e0
[  672.470232][ T5970]        common_interrupt+0xb0/0xd0
[  672.470240][ T5970]        asm_common_interrupt+0x22/0x40
[  672.470250][ T5970]        __stack_depot_save+0xb5/0x460
[  672.470262][ T5970]        kasan_set_track+0x60/0x70
[  672.470273][ T5970]        kasan_save_free_info+0x2d/0x50
[  672.470285][ T5970]        ____kasan_slab_free+0x126/0x1e0
[  672.470295][ T5970]        slab_free_freelist_hook+0x131/0x1a0
[  672.470304][ T5970]        kmem_cache_free_bulk+0x348/0x460
[  672.470312][ T5970]        mas_destroy+0x2489/0x2c60
[  672.470323][ T5970]        mas_store_prealloc+0x31a/0x400
[  672.470333][ T5970]        vma_expand+0x4c1/0x880
[  672.470343][ T5970]        mmap_region+0xc24/0x1c70
[  672.470352][ T5970]        do_mmap+0x958/0xfd0
[  672.470361][ T5970]        vm_mmap_pgoff+0x1b2/0x2b0
[  672.470373][ T5970]        ksys_mmap_pgoff+0x516/0x6f0
[  672.470382][ T5970]        do_syscall_64+0x4c/0xa0
[  672.470394][ T5970]        entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  672.470404][ T5970] 
[  672.470404][ T5970] -> #2 (&tty->write_wait){-...}-{2:2}:
[  672.470415][ T5970]        _raw_spin_lock_irqsave+0xa4/0xf0
[  672.470423][ T5970]        __wake_up+0xf4/0x190
[  672.470433][ T5970]        tty_port_default_wakeup+0x9e/0xf0
[  672.470440][ T5970]        serial8250_tx_chars+0x629/0x830
[  672.470448][ T5970]        serial8250_handle_irq+0x516/0x6d0
[  672.470457][ T5970]        serial8250_default_handle_irq+0xb4/0x1a0
[  672.470466][ T5970]        serial8250_interrupt+0x9b/0x1c0
[  672.470474][ T5970]        __handle_irq_event_percpu+0x298/0xa30
[  672.470482][ T5970]        handle_irq_event+0x87/0x1e0
[  672.470489][ T5970]        handle_edge_irq+0x243/0xb20
[  672.470498][ T5970]        __common_interrupt+0xd7/0x1e0
[  672.470509][ T5970]        common_interrupt+0xb0/0xd0
[  672.470516][ T5970]        asm_common_interrupt+0x22/0x40
[  672.470526][ T5970]        _raw_spin_unlock_irqrestore+0xa5/0x100
[  672.470534][ T5970]        uart_write+0x68a/0x910
[  672.470545][ T5970]        n_tty_write+0xd1a/0x11c0
[  672.470556][ T5970]        file_tty_write+0x4dd/0x860
[  672.470564][ T5970]        vfs_write+0x44c/0x960
[  672.470575][ T5970]        ksys_write+0x143/0x240
[  672.470586][ T5970]        do_syscall_64+0x4c/0xa0
[  672.470597][ T5970]        entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  672.470607][ T5970] 
[  672.470607][ T5970] -> #1 (&port_lock_key){-...}-{2:2}:
[  672.470617][ T5970]        _raw_spin_lock_irqsave+0xa4/0xf0
[  672.470626][ T5970]        serial8250_console_write+0x169/0x17a0
[  672.470635][ T5970]        console_emit_next_record+0x947/0xc90
[  672.470646][ T5970]        console_unlock+0x223/0x630
[  672.470656][ T5970]        vprintk_emit+0x489/0x680
[  672.470667][ T5970]        _printk+0xcc/0x110
[  672.470676][ T5970]        register_console+0x6c6/0x9c0
[  672.470686][ T5970]        univ8250_console_init+0x41/0x43
[  672.470697][ T5970]        console_init+0x1bc/0x78e
[  672.470708][ T5970]        start_kernel+0x303/0x539
[  672.470715][ T5970]        secondary_startup_64_no_verify+0xcf/0xdb
[  672.470730][ T5970] 
[  672.470730][ T5970] -> #0 (console_owner){....}-{0:0}:
[  672.470741][ T5970]        __lock_acquire+0x2cf8/0x7c50
[  672.470752][ T5970]        lock_acquire+0x1b4/0x490
[  672.470762][ T5970]        console_emit_next_record+0x84c/0xc90
[  672.470773][ T5970]        console_unlock+0x223/0x630
[  672.470783][ T5970]        vprintk_emit+0x489/0x680
[  672.470794][ T5970]        _printk+0xcc/0x110
[  672.470802][ T5970]        should_fail_ex+0x37a/0x4d0
[  672.470815][ T5970]        strncpy_from_user+0x32/0x350
[  672.470825][ T5970]        strncpy_from_user_nofault+0x6d/0x140
[  672.470834][ T5970]        bpf_bprintf_prepare+0xba0/0x13d0
[  672.470846][ T5970]        bpf_trace_printk+0xd8/0x190
[  672.470857][ T5970]        bpf_prog_7c77c7e0f6645ad8+0x35/0x37
[  672.470867][ T5970]        bpf_trace_run2+0x1cd/0x3d0
[  672.470878][ T5970]        trace_contention_begin+0x142/0x190
[  672.470890][ T5970]        __pv_queued_spin_lock_slowpath+0xdc/0x9c0
[  672.470899][ T5970]        queued_spin_lock_slowpath+0x43/0x50
[  672.470907][ T5970]        do_raw_spin_lock+0x217/0x280
[  672.470918][ T5970]        raw_spin_rq_lock_nested+0xa5/0x140
[  672.470927][ T5970]        __schedule+0x2ed/0x40b0
[  672.470938][ T5970]        preempt_schedule_irq+0xb1/0x150
[  672.470948][ T5970]        irqentry_exit+0x63/0x70
[  672.470957][ T5970]        asm_sysvec_reschedule_ipi+0x16/0x20
[  672.470966][ T5970]        lock_is_held_type+0x147/0x190
[  672.470977][ T5970]        __might_resched+0xa3/0x610
[  672.470991][ T5970]        __might_fault+0x6d/0x120
[  672.470999][ T5970]        _copy_from_user+0x27/0x170
[  672.471008][ T5970]        kstrtouint_from_user+0xbe/0x150
[  672.471018][ T5970]        proc_fail_nth_write+0x85/0x1f0
[  672.471027][ T5970]        vfs_write+0x2c4/0x960
[  672.471037][ T5970]        ksys_write+0x143/0x240
[  672.471048][ T5970]        do_syscall_64+0x4c/0xa0
[  672.471059][ T5970]        entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  672.471068][ T5970] 
[  672.471068][ T5970] other info that might help us debug this:
[  672.471068][ T5970] 
[  672.471071][ T5970] Chain exists of:
[  672.471071][ T5970]   console_owner --> &p->pi_lock --> &rq->__lock
[  672.471071][ T5970] 
[  672.471084][ T5970]  Possible unsafe locking scenario:
[  672.471084][ T5970] 
[  672.471086][ T5970]        CPU0                    CPU1
[  672.471089][ T5970]        ----                    ----
[  672.471091][ T5970]   lock(&rq->__lock);
[  672.471096][ T5970]                                lock(&p->pi_lock);
[  672.471102][ T5970]                                lock(&rq->__lock);
[  672.471107][ T5970]   lock(console_owner);
[  672.471112][ T5970] 
[  672.471112][ T5970]  *** DEADLOCK ***
[  672.471112][ T5970] 
[  672.471114][ T5970] 5 locks held by syz.0.397/5970:
[  672.471120][ T5970]  #0: ffff888028dab4e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360
[  672.471143][ T5970]  #1: ffff888028d7a460 (sb_writers#3){.+.+}-{0:0}, at: vfs_write+0x256/0x960
[  672.471167][ T5970]  #2: ffff8880b8e3ab18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xa5/0x140
[  672.471188][ T5970]  #3: ffffffff8c92b1e0 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0xda/0x3d0
[  672.471211][ T5970]  #4: ffffffff8c91f480 (console_lock){+.+.}-{0:0}, at: _printk+0xcc/0x110
[  672.471231][ T5970] 
[  672.471231][ T5970] stack backtrace:
[  672.471234][ T5970] CPU: 0 PID: 5970 Comm: syz.0.397 Not tainted syzkaller #0
[  672.471244][ T5970] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  672.471249][ T5970] Call Trace:
[  672.471252][ T5970]  <TASK>
[  672.471256][ T5970]  dump_stack_lvl+0x168/0x22e
[  672.471269][ T5970]  ? load_image+0x3b0/0x3b0
[  672.471279][ T5970]  ? show_regs_print_info+0x12/0x12
[  672.471293][ T5970]  ? print_circular_bug+0x12b/0x1a0
[  672.471305][ T5970]  check_noncircular+0x274/0x310
[  672.471317][ T5970]  ? add_chain_block+0x940/0x940
[  672.471329][ T5970]  ? lockdep_lock+0xdc/0x1e0
[  672.471340][ T5970]  ? add_lock_to_list+0x191/0x280
[  672.471352][ T5970]  ? _find_first_zero_bit+0xcf/0x100
[  672.471361][ T5970]  __lock_acquire+0x2cf8/0x7c50
[  672.471377][ T5970]  ? verify_lock_unused+0x140/0x140
[  672.471392][ T5970]  lock_acquire+0x1b4/0x490
[  672.471402][ T5970]  ? console_emit_next_record+0x82d/0xc90
[  672.471422][ T5970]  ? __lock_acquire+0x7c50/0x7c50
[  672.471433][ T5970]  ? do_raw_spin_lock+0x11d/0x280
[  672.471445][ T5970]  ? read_lock_is_recursive+0x10/0x10
[  672.471456][ T5970]  ? __rwlock_init+0x140/0x140
[  672.471468][ T5970]  ? memcpy+0x3c/0x60
[  672.471475][ T5970]  ? do_raw_spin_unlock+0x11d/0x230
[  672.471488][ T5970]  ? console_emit_next_record+0x82d/0xc90
[  672.471500][ T5970]  console_emit_next_record+0x84c/0xc90
[  672.471512][ T5970]  ? console_emit_next_record+0x82d/0xc90
[  672.471526][ T5970]  ? __lock_acquire+0x7c50/0x7c50
[  672.471537][ T5970]  ? info_print_prefix+0x300/0x300
[  672.471550][ T5970]  ? do_raw_spin_unlock+0x11d/0x230
[  672.471563][ T5970]  ? _raw_spin_unlock_irqrestore+0xaa/0x100
[  672.471572][ T5970]  ? _raw_spin_unlock+0x40/0x40
[  672.471581][ T5970]  ? __lock_acquire+0x12e5/0x7c50
[  672.471594][ T5970]  ? __down_trylock_console_sem+0x184/0x1e0
[  672.471606][ T5970]  ? _printk+0xcc/0x110
[  672.471615][ T5970]  ? _printk+0xcc/0x110
[  672.471624][ T5970]  ? console_trylock+0x160/0x160
[  672.471636][ T5970]  console_unlock+0x223/0x630
[  672.471648][ T5970]  ? _printk+0xcc/0x110
[  672.471657][ T5970]  vprintk_emit+0x489/0x680
[  672.471669][ T5970]  ? printk_sprint+0x460/0x460
[  672.471680][ T5970]  ? verify_lock_unused+0x140/0x140
[  672.471692][ T5970]  ? __lock_acquire+0x12e5/0x7c50
[  672.471703][ T5970]  ? verify_lock_unused+0x140/0x140
[  672.471715][ T5970]  _printk+0xcc/0x110
[  672.471731][ T5970]  ? load_image+0x3b0/0x3b0
[  672.471741][ T5970]  ? mark_lock+0x94/0x320
[  672.471752][ T5970]  ? __lock_acquire+0x12e5/0x7c50
[  672.471764][ T5970]  should_fail_ex+0x37a/0x4d0
[  672.471777][ T5970]  strncpy_from_user+0x32/0x350
[  672.471789][ T5970]  strncpy_from_user_nofault+0x6d/0x140
[  672.471798][ T5970]  bpf_bprintf_prepare+0xba0/0x13d0
[  672.471811][ T5970]  ? bpf_bprintf_cleanup+0xc0/0xc0
[  672.471823][ T5970]  ? is_bpf_text_address+0x22/0x2a0
[  672.471836][ T5970]  ? mark_lock+0x94/0x320
[  672.471847][ T5970]  bpf_trace_printk+0xd8/0x190
[  672.471859][ T5970]  ? bpf_probe_write_user+0xe0/0xe0
[  672.471873][ T5970]  bpf_prog_7c77c7e0f6645ad8+0x35/0x37
[  672.471883][ T5970]  bpf_trace_run2+0x1cd/0x3d0
[  672.471895][ T5970]  ? bpf_trace_run2+0xda/0x3d0
[  672.471907][ T5970]  ? bpf_trace_run1+0x3d0/0x3d0
[  672.471918][ T5970]  ? ima_match_policy+0x20a0/0x2130
[  672.471928][ T5970]  ? cmp_ex_search+0x1a/0x70
[  672.471936][ T5970]  ? bsearch+0x8a/0xb0
[  672.471944][ T5970]  trace_contention_begin+0x142/0x190
[  672.471956][ T5970]  __pv_queued_spin_lock_slowpath+0xdc/0x9c0
[  672.471967][ T5970]  ? rcu_softirq_qs+0x2d0/0x2d0
[  672.471979][ T5970]  ? __lock_acquire+0x12e5/0x7c50
[  672.471991][ T5970]  ? __pv_queued_spin_unlock_slowpath+0x290/0x290
[  672.472003][ T5970]  queued_spin_lock_slowpath+0x43/0x50
[  672.472012][ T5970]  do_raw_spin_lock+0x217/0x280
[  672.472025][ T5970]  ? __rwlock_init+0x140/0x140
[  672.472039][ T5970]  raw_spin_rq_lock_nested+0xa5/0x140
[  672.472049][ T5970]  __schedule+0x2ed/0x40b0
[  672.472063][ T5970]  ? __sched_text_start+0x8/0x8
[  672.472074][ T5970]  ? lock_chain_count+0x20/0x20
[  672.472085][ T5970]  ? preempt_schedule_irq+0xa6/0x150
[  672.472097][ T5970]  preempt_schedule_irq+0xb1/0x150
[  672.472109][ T5970]  ? preempt_schedule_notrace+0x110/0x110
[  672.472122][ T5970]  ? rcu_irq_exit_check_preempt+0xdb/0x210
[  672.472134][ T5970]  irqentry_exit+0x63/0x70
[  672.472143][ T5970]  asm_sysvec_reschedule_ipi+0x16/0x20
[  672.472154][ T5970] RIP: 0010:lock_is_held_type+0x147/0x190
[  672.472165][ T5970] Code: 24 f7 04 24 00 02 00 00 75 46 41 f7 c5 00 02 00 00 74 01 fb 65 48 8b 04 25 28 00 00 00 48 3b 44 24 08 75 3c 89 e8 48 83 c4 10 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b 48 c7 c7 00 06 6c 8a e8 00
[  672.472173][ T5970] RSP: 0018:ffffc900050679a8 EFLAGS: 00000282
[  672.472181][ T5970] RAX: 0000000000000000 RBX: ffff888027451dc0 RCX: eaaa3874f1e88a00
[  672.472188][ T5970] RDX: 0000000000000000 RSI: ffffffff8a6c1780 RDI: ffffffff8abefec0
[  672.472194][ T5970] RBP: 0000000000000000 R08: ffff888027451dc0 R09: 0000000000000003
[  672.472200][ T5970] R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000000002
[  672.472205][ T5970] R13: 0000000000000246 R14: ffffffff8c92b240 R15: ffff8880274528f0
[  672.472216][ T5970]  __might_resched+0xa3/0x610
[  672.472229][ T5970]  ? __might_sleep+0xd0/0xd0
[  672.472242][ T5970]  ? verify_lock_unused+0x140/0x140
[  672.472253][ T5970]  ? __lock_acquire+0x7c50/0x7c50
[  672.472265][ T5970]  __might_fault+0x6d/0x120
[  672.472274][ T5970]  _copy_from_user+0x27/0x170
[  672.472284][ T5970]  kstrtouint_from_user+0xbe/0x150
[  672.472296][ T5970]  ? kstrtol_from_user+0x150/0x150
[  672.472309][ T5970]  proc_fail_nth_write+0x85/0x1f0
[  672.472318][ T5970]  ? proc_fail_nth_read+0x210/0x210
[  672.472327][ T5970]  ? common_file_perm+0x171/0x1c0
[  672.472341][ T5970]  ? proc_fail_nth_read+0x210/0x210
[  672.472349][ T5970]  vfs_write+0x2c4/0x960
[  672.472361][ T5970]  ? file_end_write+0x250/0x250
[  672.472373][ T5970]  ? __fget_files+0x28/0x4d0
[  672.472384][ T5970]  ? __fget_files+0x44a/0x4d0
[  672.472396][ T5970]  ? __fdget_pos+0x2ae/0x360
[  672.472406][ T5970]  ? ksys_write+0x71/0x240
[  672.472418][ T5970]  ksys_write+0x143/0x240
[  672.472429][ T5970]  ? __ia32_sys_read+0x80/0x80
[  672.472441][ T5970]  ? lockdep_hardirqs_on+0x94/0x140
[  672.472451][ T5970]  do_syscall_64+0x4c/0xa0
[  672.472462][ T5970]  ? clear_bhb_loop+0x60/0xb0
[  672.472473][ T5970]  ? clear_bhb_loop+0x60/0xb0
[  672.472484][ T5970]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  672.472495][ T5970] RIP: 0033:0x7f07a958e1ff
[  672.472502][ T5970] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  672.472510][ T5970] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  672.472518][ T5970] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  672.472524][ T5970] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  672.472530][ T5970] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  672.472536][ T5970] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  672.472541][ T5970] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  672.472550][ T5970]  </TASK>
[  673.972037][ T5970] CPU: 0 PID: 5970 Comm: syz.0.397 Not tainted syzkaller #0
[  673.979307][ T5970] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  673.989346][ T5970] Call Trace:
[  673.992615][ T5970]  <TASK>
[  673.995538][ T5970]  dump_stack_lvl+0x168/0x22e
[  674.000213][ T5970]  ? show_regs_print_info+0x12/0x12
[  674.005405][ T5970]  ? load_image+0x3b0/0x3b0
[  674.009904][ T5970]  ? mark_lock+0x94/0x320
[  674.014224][ T5970]  ? __lock_acquire+0x12e5/0x7c50
[  674.019238][ T5970]  should_fail_ex+0x399/0x4d0
[  674.023912][ T5970]  strncpy_from_user+0x32/0x350
[  674.028755][ T5970]  strncpy_from_user_nofault+0x6d/0x140
[  674.034289][ T5970]  bpf_bprintf_prepare+0xba0/0x13d0
[  674.039494][ T5970]  ? bpf_bprintf_cleanup+0xc0/0xc0
[  674.044602][ T5970]  ? is_bpf_text_address+0x22/0x2a0
[  674.049821][ T5970]  ? mark_lock+0x94/0x320
[  674.054159][ T5970]  bpf_trace_printk+0xd8/0x190
[  674.058947][ T5970]  ? bpf_probe_write_user+0xe0/0xe0
[  674.064158][ T5970]  bpf_prog_7c77c7e0f6645ad8+0x35/0x37
[  674.069605][ T5970]  bpf_trace_run2+0x1cd/0x3d0
[  674.074278][ T5970]  ? bpf_trace_run2+0xda/0x3d0
[  674.079034][ T5970]  ? bpf_trace_run1+0x3d0/0x3d0
[  674.083880][ T5970]  ? ima_match_policy+0x20a0/0x2130
[  674.089065][ T5970]  ? cmp_ex_search+0x1a/0x70
[  674.093642][ T5970]  ? bsearch+0x8a/0xb0
[  674.097700][ T5970]  trace_contention_begin+0x142/0x190
[  674.103063][ T5970]  __pv_queued_spin_lock_slowpath+0xdc/0x9c0
[  674.109030][ T5970]  ? rcu_softirq_qs+0x2d0/0x2d0
[  674.113869][ T5970]  ? __lock_acquire+0x12e5/0x7c50
[  674.118882][ T5970]  ? __pv_queued_spin_unlock_slowpath+0x290/0x290
[  674.125460][ T5970]  queued_spin_lock_slowpath+0x43/0x50
[  674.130905][ T5970]  do_raw_spin_lock+0x217/0x280
[  674.135790][ T5970]  ? __rwlock_init+0x140/0x140
[  674.140549][ T5970]  raw_spin_rq_lock_nested+0xa5/0x140
[  674.145910][ T5970]  __schedule+0x2ed/0x40b0
[  674.150328][ T5970]  ? __sched_text_start+0x8/0x8
[  674.155167][ T5970]  ? lock_chain_count+0x20/0x20
[  674.160009][ T5970]  ? preempt_schedule_irq+0xa6/0x150
[  674.165284][ T5970]  preempt_schedule_irq+0xb1/0x150
[  674.170469][ T5970]  ? preempt_schedule_notrace+0x110/0x110
[  674.176177][ T5970]  ? rcu_irq_exit_check_preempt+0xdb/0x210
[  674.181972][ T5970]  irqentry_exit+0x63/0x70
[  674.186375][ T5970]  asm_sysvec_reschedule_ipi+0x16/0x20
[  674.191822][ T5970] RIP: 0010:lock_is_held_type+0x147/0x190
[  674.197536][ T5970] Code: 24 f7 04 24 00 02 00 00 75 46 41 f7 c5 00 02 00 00 74 01 fb 65 48 8b 04 25 28 00 00 00 48 3b 44 24 08 75 3c 89 e8 48 83 c4 10 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b 48 c7 c7 00 06 6c 8a e8 00
[  674.217129][ T5970] RSP: 0018:ffffc900050679a8 EFLAGS: 00000282
[  674.223183][ T5970] RAX: 0000000000000000 RBX: ffff888027451dc0 RCX: eaaa3874f1e88a00
[  674.231141][ T5970] RDX: 0000000000000000 RSI: ffffffff8a6c1780 RDI: ffffffff8abefec0
[  674.239097][ T5970] RBP: 0000000000000000 R08: ffff888027451dc0 R09: 0000000000000003
[  674.247054][ T5970] R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000000002
[  674.255012][ T5970] R13: 0000000000000246 R14: ffffffff8c92b240 R15: ffff8880274528f0
[  674.262991][ T5970]  __might_resched+0xa3/0x610
[  674.267752][ T5970]  ? __might_sleep+0xd0/0xd0
[  674.272332][ T5970]  ? verify_lock_unused+0x140/0x140
[  674.277519][ T5970]  ? __lock_acquire+0x7c50/0x7c50
[  674.282533][ T5970]  __might_fault+0x6d/0x120
[  674.287020][ T5970]  _copy_from_user+0x27/0x170
[  674.291682][ T5970]  kstrtouint_from_user+0xbe/0x150
[  674.296783][ T5970]  ? kstrtol_from_user+0x150/0x150
[  674.301884][ T5970]  proc_fail_nth_write+0x85/0x1f0
[  674.306897][ T5970]  ? proc_fail_nth_read+0x210/0x210
[  674.312085][ T5970]  ? common_file_perm+0x171/0x1c0
[  674.317102][ T5970]  ? proc_fail_nth_read+0x210/0x210
[  674.322285][ T5970]  vfs_write+0x2c4/0x960
[  674.326519][ T5970]  ? file_end_write+0x250/0x250
[  674.331358][ T5970]  ? __fget_files+0x28/0x4d0
[  674.335963][ T5970]  ? __fget_files+0x44a/0x4d0
[  674.340831][ T5970]  ? __fdget_pos+0x2ae/0x360
[  674.345441][ T5970]  ? ksys_write+0x71/0x240
[  674.349862][ T5970]  ksys_write+0x143/0x240
[  674.354198][ T5970]  ? __ia32_sys_read+0x80/0x80
[  674.358952][ T5970]  ? lockdep_hardirqs_on+0x94/0x140
[  674.364137][ T5970]  do_syscall_64+0x4c/0xa0
[  674.368545][ T5970]  ? clear_bhb_loop+0x60/0xb0
[  674.373213][ T5970]  ? clear_bhb_loop+0x60/0xb0
[  674.377883][ T5970]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  674.383765][ T5970] RIP: 0033:0x7f07a958e1ff
[  674.388170][ T5970] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  674.407940][ T5970] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  674.416345][ T5970] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  674.424304][ T5970] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  674.432264][ T5970] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  674.440223][ T5970] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  674.448184][ T5970] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  674.456151][ T5970]  </TASK>
[  674.516637][ T5976] FAULT_INJECTION: forcing a failure.
[  674.516637][ T5976] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  674.530318][ T5976] CPU: 1 PID: 5976 Comm: syz.0.398 Not tainted syzkaller #0
[  674.537645][ T5976] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  674.547697][ T5976] Call Trace:
[  674.550984][ T5976]  <TASK>
[  674.553908][ T5976]  dump_stack_lvl+0x168/0x22e
[  674.558590][ T5976]  ? show_regs_print_info+0x12/0x12
[  674.563794][ T5976]  ? load_image+0x3b0/0x3b0
[  674.568315][ T5976]  ? __lock_acquire+0x7c50/0x7c50
[  674.573354][ T5976]  ? rcu_is_watching+0x11/0xa0
[  674.578215][ T5976]  ? lock_release+0xd4/0x910
[  674.582853][ T5976]  should_fail_ex+0x399/0x4d0
[  674.587583][ T5976]  _copy_from_user+0x2c/0x170
[  674.592272][ T5976]  kstrtouint_from_user+0xbe/0x150
[  674.597383][ T5976]  ? kstrtol_from_user+0x150/0x150
[  674.602488][ T5976]  ? lock_acquire+0xe8/0x490
[  674.607066][ T5976]  ? __mutex_trylock_common+0x14f/0x250
[  674.612597][ T5976]  ? read_lock_is_recursive+0x10/0x10
[  674.617964][ T5976]  proc_fail_nth_write+0x85/0x1f0
[  674.622976][ T5976]  ? proc_fail_nth_read+0x210/0x210
[  674.628159][ T5976]  ? common_file_perm+0x171/0x1c0
[  674.633177][ T5976]  ? preempt_count_add+0x8d/0x190
[  674.638187][ T5976]  ? proc_fail_nth_read+0x210/0x210
[  674.643368][ T5976]  vfs_write+0x2c4/0x960
[  674.648120][ T5976]  ? file_end_write+0x250/0x250
[  674.652955][ T5976]  ? __mutex_unlock_slowpath+0x19e/0x6a0
[  674.658677][ T5976]  ? __fget_files+0x28/0x4d0
[  674.663252][ T5976]  ? __fget_files+0x44a/0x4d0
[  674.667925][ T5976]  ? __fdget_pos+0x2ae/0x360
[  674.672529][ T5976]  ? ksys_write+0x71/0x240
[  674.676933][ T5976]  ksys_write+0x143/0x240
[  674.681257][ T5976]  ? __ia32_sys_read+0x80/0x80
[  674.686017][ T5976]  ? rcu_is_watching+0x11/0xa0
[  674.690771][ T5976]  do_syscall_64+0x4c/0xa0
[  674.695353][ T5976]  ? clear_bhb_loop+0x60/0xb0
[  674.700023][ T5976]  ? clear_bhb_loop+0x60/0xb0
[  674.704704][ T5976]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  674.710589][ T5976] RIP: 0033:0x7f07a958e1ff
[  674.715004][ T5976] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  674.734611][ T5976] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  674.743022][ T5976] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  674.750985][ T5976] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  674.758972][ T5976] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
2026/01/15 03:36:32 executed programs: 383
[  674.767026][ T5976] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  674.774982][ T5976] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  674.782978][ T5976]  </TASK>
[  674.815285][ T5981] FAULT_INJECTION: forcing a failure.
[  674.815285][ T5981] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  674.828823][ T5981] CPU: 1 PID: 5981 Comm: syz.0.399 Not tainted syzkaller #0
[  674.836099][ T5981] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  674.846152][ T5981] Call Trace:
[  674.849417][ T5981]  <TASK>
[  674.852332][ T5981]  dump_stack_lvl+0x168/0x22e
[  674.856998][ T5981]  ? show_regs_print_info+0x12/0x12
[  674.862183][ T5981]  ? load_image+0x3b0/0x3b0
[  674.866682][ T5981]  ? __lock_acquire+0x7c50/0x7c50
[  674.871718][ T5981]  ? rcu_is_watching+0x11/0xa0
[  674.876481][ T5981]  ? lock_release+0xd4/0x910
[  674.881060][ T5981]  should_fail_ex+0x399/0x4d0
[  674.885739][ T5981]  _copy_from_user+0x2c/0x170
[  674.890402][ T5981]  kstrtouint_from_user+0xbe/0x150
[  674.895506][ T5981]  ? kstrtol_from_user+0x150/0x150
[  674.900615][ T5981]  ? lock_acquire+0xe8/0x490
[  674.905197][ T5981]  ? __mutex_trylock_common+0x14f/0x250
[  674.910730][ T5981]  ? read_lock_is_recursive+0x10/0x10
[  674.916091][ T5981]  proc_fail_nth_write+0x85/0x1f0
[  674.921102][ T5981]  ? proc_fail_nth_read+0x210/0x210
[  674.926287][ T5981]  ? common_file_perm+0x171/0x1c0
[  674.931303][ T5981]  ? preempt_count_add+0x8d/0x190
[  674.936314][ T5981]  ? proc_fail_nth_read+0x210/0x210
[  674.941495][ T5981]  vfs_write+0x2c4/0x960
[  674.945732][ T5981]  ? file_end_write+0x250/0x250
[  674.950568][ T5981]  ? __mutex_unlock_slowpath+0x19e/0x6a0
[  674.956192][ T5981]  ? __fget_files+0x28/0x4d0
[  674.960770][ T5981]  ? __fget_files+0x44a/0x4d0
[  674.965441][ T5981]  ? __fdget_pos+0x2ae/0x360
[  674.970017][ T5981]  ? ksys_write+0x71/0x240
[  674.974421][ T5981]  ksys_write+0x143/0x240
[  674.978738][ T5981]  ? __ia32_sys_read+0x80/0x80
[  674.983487][ T5981]  ? rcu_is_watching+0x11/0xa0
[  674.988248][ T5981]  do_syscall_64+0x4c/0xa0
[  674.992654][ T5981]  ? clear_bhb_loop+0x60/0xb0
[  674.997321][ T5981]  ? clear_bhb_loop+0x60/0xb0
[  675.001985][ T5981]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  675.007865][ T5981] RIP: 0033:0x7f07a958e1ff
[  675.012267][ T5981] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  675.031865][ T5981] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  675.040355][ T5981] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  675.048455][ T5981] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  675.056417][ T5981] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  675.064373][ T5981] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  675.072328][ T5981] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  675.080301][ T5981]  </TASK>
[  675.105241][ T5986] FAULT_INJECTION: forcing a failure.
[  675.105241][ T5986] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  675.118566][ T5986] CPU: 1 PID: 5986 Comm: syz.0.400 Not tainted syzkaller #0
[  675.125841][ T5986] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  675.135885][ T5986] Call Trace:
[  675.139149][ T5986]  <TASK>
[  675.142073][ T5986]  dump_stack_lvl+0x168/0x22e
[  675.146746][ T5986]  ? show_regs_print_info+0x12/0x12
[  675.151939][ T5986]  ? load_image+0x3b0/0x3b0
[  675.156443][ T5986]  ? __lock_acquire+0x7c50/0x7c50
[  675.161487][ T5986]  ? rcu_is_watching+0x11/0xa0
[  675.166271][ T5986]  ? lock_release+0xd4/0x910
[  675.170859][ T5986]  should_fail_ex+0x399/0x4d0
[  675.175543][ T5986]  _copy_from_user+0x2c/0x170
[  675.180208][ T5986]  kstrtouint_from_user+0xbe/0x150
[  675.185313][ T5986]  ? kstrtol_from_user+0x150/0x150
[  675.190425][ T5986]  ? lock_acquire+0xe8/0x490
[  675.195014][ T5986]  ? __mutex_trylock_common+0x14f/0x250
[  675.200563][ T5986]  ? read_lock_is_recursive+0x10/0x10
[  675.205932][ T5986]  proc_fail_nth_write+0x85/0x1f0
[  675.210944][ T5986]  ? proc_fail_nth_read+0x210/0x210
[  675.216130][ T5986]  ? common_file_perm+0x171/0x1c0
[  675.221145][ T5986]  ? preempt_count_add+0x8d/0x190
[  675.226156][ T5986]  ? proc_fail_nth_read+0x210/0x210
[  675.231342][ T5986]  vfs_write+0x2c4/0x960
[  675.235574][ T5986]  ? file_end_write+0x250/0x250
[  675.240412][ T5986]  ? __mutex_unlock_slowpath+0x19e/0x6a0
[  675.246046][ T5986]  ? __fget_files+0x28/0x4d0
[  675.250683][ T5986]  ? __fget_files+0x44a/0x4d0
[  675.255380][ T5986]  ? __fdget_pos+0x2ae/0x360
[  675.259967][ T5986]  ? ksys_write+0x71/0x240
[  675.264379][ T5986]  ksys_write+0x143/0x240
[  675.268707][ T5986]  ? __ia32_sys_read+0x80/0x80
[  675.273460][ T5986]  ? rcu_is_watching+0x11/0xa0
[  675.278212][ T5986]  do_syscall_64+0x4c/0xa0
[  675.282623][ T5986]  ? clear_bhb_loop+0x60/0xb0
[  675.287291][ T5986]  ? clear_bhb_loop+0x60/0xb0
[  675.291955][ T5986]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  675.297835][ T5986] RIP: 0033:0x7f07a958e1ff
[  675.302232][ T5986] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  675.321824][ T5986] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  675.330224][ T5986] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  675.338204][ T5986] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  675.346159][ T5986] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  675.354127][ T5986] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  675.362096][ T5986] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  675.370097][ T5986]  </TASK>
[  675.395009][ T5991] FAULT_INJECTION: forcing a failure.
[  675.395009][ T5991] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  675.408301][ T5991] CPU: 0 PID: 5991 Comm: syz.0.401 Not tainted syzkaller #0
[  675.415589][ T5991] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  675.425632][ T5991] Call Trace:
[  675.428894][ T5991]  <TASK>
[  675.431810][ T5991]  dump_stack_lvl+0x168/0x22e
[  675.436479][ T5991]  ? show_regs_print_info+0x12/0x12
[  675.441662][ T5991]  ? load_image+0x3b0/0x3b0
[  675.446162][ T5991]  ? __lock_acquire+0x7c50/0x7c50
[  675.451198][ T5991]  ? rcu_is_watching+0x11/0xa0
[  675.455973][ T5991]  ? lock_release+0xd4/0x910
[  675.460567][ T5991]  should_fail_ex+0x399/0x4d0
[  675.465242][ T5991]  _copy_from_user+0x2c/0x170
[  675.469912][ T5991]  kstrtouint_from_user+0xbe/0x150
[  675.475018][ T5991]  ? kstrtol_from_user+0x150/0x150
[  675.480115][ T5991]  ? lock_acquire+0xe8/0x490
[  675.484695][ T5991]  ? __mutex_trylock_common+0x14f/0x250
[  675.490224][ T5991]  ? read_lock_is_recursive+0x10/0x10
[  675.495582][ T5991]  proc_fail_nth_write+0x85/0x1f0
[  675.500607][ T5991]  ? proc_fail_nth_read+0x210/0x210
[  675.505916][ T5991]  ? common_file_perm+0x171/0x1c0
[  675.510927][ T5991]  ? preempt_count_add+0x8d/0x190
[  675.515941][ T5991]  ? proc_fail_nth_read+0x210/0x210
[  675.521149][ T5991]  vfs_write+0x2c4/0x960
[  675.525383][ T5991]  ? file_end_write+0x250/0x250
[  675.530222][ T5991]  ? __mutex_unlock_slowpath+0x19e/0x6a0
[  675.535863][ T5991]  ? __fget_files+0x28/0x4d0
[  675.540437][ T5991]  ? __fget_files+0x44a/0x4d0
[  675.545098][ T5991]  ? __fdget_pos+0x2ae/0x360
[  675.549673][ T5991]  ? ksys_write+0x71/0x240
[  675.554083][ T5991]  ksys_write+0x143/0x240
[  675.558409][ T5991]  ? __ia32_sys_read+0x80/0x80
[  675.563168][ T5991]  ? rcu_is_watching+0x11/0xa0
[  675.567925][ T5991]  do_syscall_64+0x4c/0xa0
[  675.572329][ T5991]  ? clear_bhb_loop+0x60/0xb0
[  675.576995][ T5991]  ? clear_bhb_loop+0x60/0xb0
[  675.581655][ T5991]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  675.587554][ T5991] RIP: 0033:0x7f07a958e1ff
[  675.591956][ T5991] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  675.611562][ T5991] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  675.619962][ T5991] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  675.627917][ T5991] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  675.635867][ T5991] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  675.644169][ T5991] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  675.652209][ T5991] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  675.660168][ T5991]  </TASK>
[  675.693323][ T5996] FAULT_INJECTION: forcing a failure.
[  675.693323][ T5996] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  675.707220][ T5996] CPU: 0 PID: 5996 Comm: syz.0.402 Not tainted syzkaller #0
[  675.714509][ T5996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  675.724559][ T5996] Call Trace:
[  675.727823][ T5996]  <TASK>
[  675.730738][ T5996]  dump_stack_lvl+0x168/0x22e
[  675.735403][ T5996]  ? show_regs_print_info+0x12/0x12
[  675.740583][ T5996]  ? load_image+0x3b0/0x3b0
[  675.745070][ T5996]  ? __lock_acquire+0x7c50/0x7c50
[  675.750077][ T5996]  ? rcu_is_watching+0x11/0xa0
[  675.754823][ T5996]  ? lock_release+0xd4/0x910
[  675.759408][ T5996]  should_fail_ex+0x399/0x4d0
[  675.764083][ T5996]  _copy_from_user+0x2c/0x170
[  675.768756][ T5996]  kstrtouint_from_user+0xbe/0x150
[  675.773859][ T5996]  ? kstrtol_from_user+0x150/0x150
[  675.779019][ T5996]  ? lock_acquire+0xe8/0x490
[  675.783591][ T5996]  ? __mutex_trylock_common+0x14f/0x250
[  675.789118][ T5996]  ? read_lock_is_recursive+0x10/0x10
[  675.794471][ T5996]  proc_fail_nth_write+0x85/0x1f0
[  675.799477][ T5996]  ? proc_fail_nth_read+0x210/0x210
[  675.804655][ T5996]  ? common_file_perm+0x171/0x1c0
[  675.809663][ T5996]  ? preempt_count_add+0x8d/0x190
[  675.814671][ T5996]  ? proc_fail_nth_read+0x210/0x210
[  675.819855][ T5996]  vfs_write+0x2c4/0x960
[  675.824089][ T5996]  ? file_end_write+0x250/0x250
[  675.828926][ T5996]  ? __mutex_unlock_slowpath+0x19e/0x6a0
[  675.834553][ T5996]  ? __fget_files+0x28/0x4d0
[  675.839138][ T5996]  ? __fget_files+0x44a/0x4d0
[  675.843805][ T5996]  ? __fdget_pos+0x2ae/0x360
[  675.848392][ T5996]  ? ksys_write+0x71/0x240
[  675.852800][ T5996]  ksys_write+0x143/0x240
[  675.857120][ T5996]  ? __ia32_sys_read+0x80/0x80
[  675.861873][ T5996]  ? rcu_is_watching+0x11/0xa0
[  675.866635][ T5996]  do_syscall_64+0x4c/0xa0
[  675.871041][ T5996]  ? clear_bhb_loop+0x60/0xb0
[  675.875708][ T5996]  ? clear_bhb_loop+0x60/0xb0
[  675.880373][ T5996]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  675.886253][ T5996] RIP: 0033:0x7f07a958e1ff
[  675.890652][ T5996] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  675.910250][ T5996] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  675.918648][ T5996] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  675.926605][ T5996] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  675.934561][ T5996] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  675.942537][ T5996] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  675.950492][ T5996] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  675.958463][ T5996]  </TASK>
[  675.984974][ T5998] FAULT_INJECTION: forcing a failure.
[  675.984974][ T5998] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  675.998159][ T5998] CPU: 1 PID: 5998 Comm: syz.0.403 Not tainted syzkaller #0
[  676.005442][ T5998] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  676.015487][ T5998] Call Trace:
[  676.018761][ T5998]  <TASK>
[  676.021673][ T5998]  dump_stack_lvl+0x168/0x22e
[  676.026344][ T5998]  ? show_regs_print_info+0x12/0x12
[  676.031530][ T5998]  ? load_image+0x3b0/0x3b0
[  676.036027][ T5998]  ? __lock_acquire+0x7c50/0x7c50
[  676.041238][ T5998]  ? rcu_is_watching+0x11/0xa0
[  676.046002][ T5998]  ? lock_release+0xd4/0x910
[  676.050592][ T5998]  should_fail_ex+0x399/0x4d0
[  676.055268][ T5998]  _copy_from_user+0x2c/0x170
[  676.059945][ T5998]  kstrtouint_from_user+0xbe/0x150
[  676.065069][ T5998]  ? kstrtol_from_user+0x150/0x150
[  676.070184][ T5998]  ? lock_acquire+0xe8/0x490
[  676.074766][ T5998]  ? __mutex_trylock_common+0x14f/0x250
[  676.080306][ T5998]  ? read_lock_is_recursive+0x10/0x10
[  676.085677][ T5998]  proc_fail_nth_write+0x85/0x1f0
[  676.090694][ T5998]  ? proc_fail_nth_read+0x210/0x210
[  676.095893][ T5998]  ? common_file_perm+0x171/0x1c0
[  676.100911][ T5998]  ? preempt_count_add+0x8d/0x190
[  676.106095][ T5998]  ? proc_fail_nth_read+0x210/0x210
[  676.111276][ T5998]  vfs_write+0x2c4/0x960
[  676.115512][ T5998]  ? file_end_write+0x250/0x250
[  676.120349][ T5998]  ? __mutex_unlock_slowpath+0x19e/0x6a0
[  676.125971][ T5998]  ? __fget_files+0x28/0x4d0
[  676.130552][ T5998]  ? __fget_files+0x44a/0x4d0
[  676.135218][ T5998]  ? __fdget_pos+0x2ae/0x360
[  676.139794][ T5998]  ? ksys_write+0x71/0x240
[  676.144199][ T5998]  ksys_write+0x143/0x240
[  676.148516][ T5998]  ? __ia32_sys_read+0x80/0x80
[  676.153267][ T5998]  ? rcu_is_watching+0x11/0xa0
[  676.158025][ T5998]  do_syscall_64+0x4c/0xa0
[  676.162431][ T5998]  ? clear_bhb_loop+0x60/0xb0
[  676.167098][ T5998]  ? clear_bhb_loop+0x60/0xb0
[  676.171763][ T5998]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  676.177646][ T5998] RIP: 0033:0x7f07a958e1ff
[  676.182050][ T5998] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  676.201730][ T5998] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  676.210132][ T5998] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  676.218088][ T5998] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  676.226049][ T5998] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  676.234016][ T5998] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  676.241975][ T5998] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  676.249943][ T5998]  </TASK>
[  676.279083][ T6003] FAULT_INJECTION: forcing a failure.
[  676.279083][ T6003] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  676.292420][ T6003] CPU: 1 PID: 6003 Comm: syz.0.404 Not tainted syzkaller #0
[  676.299797][ T6003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  676.309849][ T6003] Call Trace:
[  676.313114][ T6003]  <TASK>
[  676.316028][ T6003]  dump_stack_lvl+0x168/0x22e
[  676.320723][ T6003]  ? show_regs_print_info+0x12/0x12
[  676.325916][ T6003]  ? load_image+0x3b0/0x3b0
[  676.330431][ T6003]  ? __lock_acquire+0x7c50/0x7c50
[  676.335556][ T6003]  ? rcu_is_watching+0x11/0xa0
[  676.340317][ T6003]  ? lock_release+0xd4/0x910
[  676.345012][ T6003]  should_fail_ex+0x399/0x4d0
[  676.349756][ T6003]  _copy_from_user+0x2c/0x170
[  676.354431][ T6003]  kstrtouint_from_user+0xbe/0x150
[  676.359536][ T6003]  ? kstrtol_from_user+0x150/0x150
[  676.364635][ T6003]  ? lock_acquire+0xe8/0x490
[  676.369304][ T6003]  ? __mutex_trylock_common+0x14f/0x250
[  676.374852][ T6003]  ? read_lock_is_recursive+0x10/0x10
[  676.380214][ T6003]  proc_fail_nth_write+0x85/0x1f0
[  676.385234][ T6003]  ? proc_fail_nth_read+0x210/0x210
[  676.390427][ T6003]  ? common_file_perm+0x171/0x1c0
[  676.395518][ T6003]  ? preempt_count_add+0x8d/0x190
[  676.400529][ T6003]  ? proc_fail_nth_read+0x210/0x210
[  676.405726][ T6003]  vfs_write+0x2c4/0x960
[  676.409958][ T6003]  ? file_end_write+0x250/0x250
[  676.414793][ T6003]  ? __mutex_unlock_slowpath+0x19e/0x6a0
[  676.420410][ T6003]  ? __fget_files+0x28/0x4d0
[  676.424989][ T6003]  ? __fget_files+0x44a/0x4d0
[  676.429648][ T6003]  ? __fdget_pos+0x2ae/0x360
[  676.434221][ T6003]  ? ksys_write+0x71/0x240
[  676.438623][ T6003]  ksys_write+0x143/0x240
[  676.442941][ T6003]  ? __ia32_sys_read+0x80/0x80
[  676.447692][ T6003]  ? rcu_is_watching+0x11/0xa0
[  676.452451][ T6003]  do_syscall_64+0x4c/0xa0
[  676.456856][ T6003]  ? clear_bhb_loop+0x60/0xb0
[  676.461559][ T6003]  ? clear_bhb_loop+0x60/0xb0
[  676.466233][ T6003]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  676.472129][ T6003] RIP: 0033:0x7f07a958e1ff
[  676.476529][ T6003] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  676.496119][ T6003] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  676.504515][ T6003] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  676.512479][ T6003] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  676.520444][ T6003] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  676.528402][ T6003] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  676.536361][ T6003] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  676.544412][ T6003]  </TASK>
[  676.574992][ T6008] FAULT_INJECTION: forcing a failure.
[  676.574992][ T6008] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  676.588451][ T6008] CPU: 1 PID: 6008 Comm: syz.0.405 Not tainted syzkaller #0
[  676.595739][ T6008] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  676.605779][ T6008] Call Trace:
[  676.609128][ T6008]  <TASK>
[  676.612040][ T6008]  dump_stack_lvl+0x168/0x22e
[  676.616708][ T6008]  ? show_regs_print_info+0x12/0x12
[  676.621895][ T6008]  ? load_image+0x3b0/0x3b0
[  676.626396][ T6008]  ? __lock_acquire+0x7c50/0x7c50
[  676.631434][ T6008]  ? rcu_is_watching+0x11/0xa0
[  676.636206][ T6008]  ? lock_release+0xd4/0x910
[  676.640785][ T6008]  should_fail_ex+0x399/0x4d0
[  676.645802][ T6008]  _copy_from_user+0x2c/0x170
[  676.650466][ T6008]  kstrtouint_from_user+0xbe/0x150
[  676.655572][ T6008]  ? kstrtol_from_user+0x150/0x150
[  676.660675][ T6008]  ? lock_acquire+0xe8/0x490
[  676.665257][ T6008]  ? __mutex_trylock_common+0x14f/0x250
[  676.670791][ T6008]  ? read_lock_is_recursive+0x10/0x10
[  676.676152][ T6008]  proc_fail_nth_write+0x85/0x1f0
[  676.681249][ T6008]  ? proc_fail_nth_read+0x210/0x210
[  676.686462][ T6008]  ? common_file_perm+0x171/0x1c0
[  676.691484][ T6008]  ? preempt_count_add+0x8d/0x190
[  676.696496][ T6008]  ? proc_fail_nth_read+0x210/0x210
[  676.701679][ T6008]  vfs_write+0x2c4/0x960
[  676.705910][ T6008]  ? file_end_write+0x250/0x250
[  676.710834][ T6008]  ? __mutex_unlock_slowpath+0x19e/0x6a0
[  676.716457][ T6008]  ? __fget_files+0x28/0x4d0
[  676.721034][ T6008]  ? __fget_files+0x44a/0x4d0
[  676.725704][ T6008]  ? __fdget_pos+0x2ae/0x360
[  676.730279][ T6008]  ? ksys_write+0x71/0x240
[  676.734699][ T6008]  ksys_write+0x143/0x240
[  676.739016][ T6008]  ? __ia32_sys_read+0x80/0x80
[  676.743782][ T6008]  ? rcu_is_watching+0x11/0xa0
[  676.748537][ T6008]  do_syscall_64+0x4c/0xa0
[  676.752945][ T6008]  ? clear_bhb_loop+0x60/0xb0
[  676.757610][ T6008]  ? clear_bhb_loop+0x60/0xb0
[  676.762276][ T6008]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  676.768160][ T6008] RIP: 0033:0x7f07a958e1ff
[  676.772563][ T6008] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  676.792241][ T6008] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  676.800651][ T6008] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  676.808607][ T6008] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  676.816562][ T6008] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  676.824520][ T6008] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  676.832478][ T6008] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  676.840439][ T6008]  </TASK>
[  676.864937][ T6013] FAULT_INJECTION: forcing a failure.
[  676.864937][ T6013] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  676.878218][ T6013] CPU: 0 PID: 6013 Comm: syz.0.406 Not tainted syzkaller #0
[  676.885499][ T6013] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  676.895540][ T6013] Call Trace:
[  676.898814][ T6013]  <TASK>
[  676.901727][ T6013]  dump_stack_lvl+0x168/0x22e
[  676.906409][ T6013]  ? show_regs_print_info+0x12/0x12
[  676.911626][ T6013]  ? load_image+0x3b0/0x3b0
[  676.916130][ T6013]  ? __lock_acquire+0x7c50/0x7c50
[  676.921161][ T6013]  ? rcu_is_watching+0x11/0xa0
[  676.925919][ T6013]  ? lock_release+0xd4/0x910
[  676.930495][ T6013]  should_fail_ex+0x399/0x4d0
[  676.935157][ T6013]  _copy_from_user+0x2c/0x170
[  676.939819][ T6013]  kstrtouint_from_user+0xbe/0x150
[  676.944923][ T6013]  ? kstrtol_from_user+0x150/0x150
[  676.950083][ T6013]  ? lock_acquire+0xe8/0x490
[  676.954707][ T6013]  ? __mutex_trylock_common+0x14f/0x250
[  676.960243][ T6013]  ? read_lock_is_recursive+0x10/0x10
[  676.965602][ T6013]  proc_fail_nth_write+0x85/0x1f0
[  676.970620][ T6013]  ? proc_fail_nth_read+0x210/0x210
[  676.975820][ T6013]  ? common_file_perm+0x171/0x1c0
[  676.980844][ T6013]  ? preempt_count_add+0x8d/0x190
[  676.985875][ T6013]  ? proc_fail_nth_read+0x210/0x210
[  676.991068][ T6013]  vfs_write+0x2c4/0x960
[  676.995305][ T6013]  ? file_end_write+0x250/0x250
[  677.000144][ T6013]  ? __mutex_unlock_slowpath+0x19e/0x6a0
[  677.005854][ T6013]  ? __fget_files+0x28/0x4d0
[  677.010434][ T6013]  ? __fget_files+0x44a/0x4d0
[  677.015101][ T6013]  ? __fdget_pos+0x2ae/0x360
[  677.019686][ T6013]  ? ksys_write+0x71/0x240
[  677.024093][ T6013]  ksys_write+0x143/0x240
[  677.028413][ T6013]  ? __ia32_sys_read+0x80/0x80
[  677.033165][ T6013]  ? rcu_is_watching+0x11/0xa0
[  677.037923][ T6013]  do_syscall_64+0x4c/0xa0
[  677.042338][ T6013]  ? clear_bhb_loop+0x60/0xb0
[  677.047006][ T6013]  ? clear_bhb_loop+0x60/0xb0
[  677.051672][ T6013]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  677.057555][ T6013] RIP: 0033:0x7f07a958e1ff
[  677.061955][ T6013] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  677.081547][ T6013] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  677.089948][ T6013] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  677.097906][ T6013] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  677.105864][ T6013] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  677.113820][ T6013] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  677.121778][ T6013] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  677.129739][ T6013]  </TASK>
[  677.165355][ T6019] FAULT_INJECTION: forcing a failure.
[  677.165355][ T6019] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  677.178776][ T6019] CPU: 0 PID: 6019 Comm: syz.0.407 Not tainted syzkaller #0
[  677.186057][ T6019] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  677.196102][ T6019] Call Trace:
[  677.199366][ T6019]  <TASK>
[  677.202279][ T6019]  dump_stack_lvl+0x168/0x22e
[  677.206942][ T6019]  ? show_regs_print_info+0x12/0x12
[  677.212126][ T6019]  ? load_image+0x3b0/0x3b0
[  677.216627][ T6019]  ? __lock_acquire+0x7c50/0x7c50
[  677.221672][ T6019]  ? rcu_is_watching+0x11/0xa0
[  677.226515][ T6019]  ? lock_release+0xd4/0x910
[  677.231096][ T6019]  should_fail_ex+0x399/0x4d0
[  677.235789][ T6019]  _copy_from_user+0x2c/0x170
[  677.240474][ T6019]  kstrtouint_from_user+0xbe/0x150
[  677.245584][ T6019]  ? kstrtol_from_user+0x150/0x150
[  677.250689][ T6019]  ? lock_acquire+0xe8/0x490
[  677.255269][ T6019]  ? __mutex_trylock_common+0x14f/0x250
[  677.260801][ T6019]  ? read_lock_is_recursive+0x10/0x10
[  677.266181][ T6019]  proc_fail_nth_write+0x85/0x1f0
[  677.271194][ T6019]  ? proc_fail_nth_read+0x210/0x210
[  677.276375][ T6019]  ? common_file_perm+0x171/0x1c0
[  677.281396][ T6019]  ? preempt_count_add+0x8d/0x190
[  677.286510][ T6019]  ? proc_fail_nth_read+0x210/0x210
[  677.291693][ T6019]  vfs_write+0x2c4/0x960
[  677.295924][ T6019]  ? file_end_write+0x250/0x250
[  677.300759][ T6019]  ? __mutex_unlock_slowpath+0x19e/0x6a0
[  677.306379][ T6019]  ? __fget_files+0x28/0x4d0
[  677.310956][ T6019]  ? __fget_files+0x44a/0x4d0
[  677.315615][ T6019]  ? __fdget_pos+0x2ae/0x360
[  677.320182][ T6019]  ? ksys_write+0x71/0x240
[  677.324579][ T6019]  ksys_write+0x143/0x240
[  677.328891][ T6019]  ? __ia32_sys_read+0x80/0x80
[  677.333640][ T6019]  ? rcu_is_watching+0x11/0xa0
[  677.338406][ T6019]  do_syscall_64+0x4c/0xa0
[  677.342832][ T6019]  ? clear_bhb_loop+0x60/0xb0
[  677.347511][ T6019]  ? clear_bhb_loop+0x60/0xb0
[  677.352183][ T6019]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  677.358066][ T6019] RIP: 0033:0x7f07a958e1ff
[  677.362482][ T6019] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  677.382263][ T6019] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  677.390678][ T6019] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  677.398654][ T6019] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  677.406742][ T6019] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  677.414700][ T6019] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  677.422655][ T6019] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  677.430617][ T6019]  </TASK>
[  677.465281][ T6024] FAULT_INJECTION: forcing a failure.
[  677.465281][ T6024] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  677.478808][ T6024] CPU: 1 PID: 6024 Comm: syz.0.408 Not tainted syzkaller #0
[  677.486101][ T6024] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  677.496173][ T6024] Call Trace:
[  677.499439][ T6024]  <TASK>
[  677.502359][ T6024]  dump_stack_lvl+0x168/0x22e
[  677.507044][ T6024]  ? show_regs_print_info+0x12/0x12
[  677.512236][ T6024]  ? load_image+0x3b0/0x3b0
[  677.516737][ T6024]  ? __lock_acquire+0x7c50/0x7c50
[  677.521775][ T6024]  ? rcu_is_watching+0x11/0xa0
[  677.526541][ T6024]  ? lock_release+0xd4/0x910
[  677.531124][ T6024]  should_fail_ex+0x399/0x4d0
[  677.535801][ T6024]  _copy_from_user+0x2c/0x170
[  677.540479][ T6024]  kstrtouint_from_user+0xbe/0x150
[  677.545595][ T6024]  ? kstrtol_from_user+0x150/0x150
[  677.550709][ T6024]  ? lock_acquire+0xe8/0x490
[  677.555301][ T6024]  ? __mutex_trylock_common+0x14f/0x250
[  677.560838][ T6024]  ? read_lock_is_recursive+0x10/0x10
[  677.566207][ T6024]  proc_fail_nth_write+0x85/0x1f0
[  677.571250][ T6024]  ? proc_fail_nth_read+0x210/0x210
[  677.576435][ T6024]  ? common_file_perm+0x171/0x1c0
[  677.581454][ T6024]  ? preempt_count_add+0x8d/0x190
[  677.586468][ T6024]  ? proc_fail_nth_read+0x210/0x210
[  677.591661][ T6024]  vfs_write+0x2c4/0x960
[  677.595898][ T6024]  ? file_end_write+0x250/0x250
[  677.600737][ T6024]  ? __mutex_unlock_slowpath+0x19e/0x6a0
[  677.606367][ T6024]  ? __fget_files+0x28/0x4d0
[  677.610969][ T6024]  ? __fget_files+0x44a/0x4d0
[  677.615661][ T6024]  ? __fdget_pos+0x2ae/0x360
[  677.620251][ T6024]  ? ksys_write+0x71/0x240
[  677.624668][ T6024]  ksys_write+0x143/0x240
[  677.629008][ T6024]  ? __ia32_sys_read+0x80/0x80
[  677.633763][ T6024]  ? rcu_is_watching+0x11/0xa0
[  677.638547][ T6024]  do_syscall_64+0x4c/0xa0
[  677.642982][ T6024]  ? clear_bhb_loop+0x60/0xb0
[  677.647666][ T6024]  ? clear_bhb_loop+0x60/0xb0
[  677.652346][ T6024]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  677.658233][ T6024] RIP: 0033:0x7f07a958e1ff
[  677.662635][ T6024] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  677.682232][ T6024] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  677.690636][ T6024] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  677.698610][ T6024] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  677.706574][ T6024] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  677.714535][ T6024] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  677.722504][ T6024] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  677.730470][ T6024]  </TASK>
[  677.763066][ T6029] FAULT_INJECTION: forcing a failure.
[  677.763066][ T6029] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  677.776423][ T6029] CPU: 1 PID: 6029 Comm: syz.0.409 Not tainted syzkaller #0
[  677.783725][ T6029] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  677.793874][ T6029] Call Trace:
[  677.797145][ T6029]  <TASK>
[  677.800056][ T6029]  dump_stack_lvl+0x168/0x22e
[  677.804725][ T6029]  ? show_regs_print_info+0x12/0x12
[  677.809913][ T6029]  ? load_image+0x3b0/0x3b0
[  677.814417][ T6029]  ? __lock_acquire+0x7c50/0x7c50
[  677.819453][ T6029]  ? rcu_is_watching+0x11/0xa0
[  677.824223][ T6029]  ? lock_release+0xd4/0x910
[  677.828821][ T6029]  should_fail_ex+0x399/0x4d0
[  677.833496][ T6029]  _copy_from_user+0x2c/0x170
[  677.838164][ T6029]  kstrtouint_from_user+0xbe/0x150
[  677.843265][ T6029]  ? kstrtol_from_user+0x150/0x150
[  677.848370][ T6029]  ? lock_acquire+0xe8/0x490
[  677.852950][ T6029]  ? __mutex_trylock_common+0x14f/0x250
[  677.858484][ T6029]  ? read_lock_is_recursive+0x10/0x10
[  677.863847][ T6029]  proc_fail_nth_write+0x85/0x1f0
[  677.868862][ T6029]  ? proc_fail_nth_read+0x210/0x210
[  677.874050][ T6029]  ? common_file_perm+0x171/0x1c0
[  677.879067][ T6029]  ? preempt_count_add+0x8d/0x190
[  677.884077][ T6029]  ? proc_fail_nth_read+0x210/0x210
[  677.889259][ T6029]  vfs_write+0x2c4/0x960
[  677.893490][ T6029]  ? file_end_write+0x250/0x250
[  677.898330][ T6029]  ? __mutex_unlock_slowpath+0x19e/0x6a0
[  677.903965][ T6029]  ? __fget_files+0x28/0x4d0
[  677.908563][ T6029]  ? __fget_files+0x44a/0x4d0
[  677.913231][ T6029]  ? __fdget_pos+0x2ae/0x360
[  677.917806][ T6029]  ? ksys_write+0x71/0x240
[  677.922217][ T6029]  ksys_write+0x143/0x240
[  677.926555][ T6029]  ? __ia32_sys_read+0x80/0x80
[  677.931315][ T6029]  ? rcu_is_watching+0x11/0xa0
[  677.936162][ T6029]  do_syscall_64+0x4c/0xa0
[  677.940573][ T6029]  ? clear_bhb_loop+0x60/0xb0
[  677.945238][ T6029]  ? clear_bhb_loop+0x60/0xb0
[  677.950071][ T6029]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  677.955959][ T6029] RIP: 0033:0x7f07a958e1ff
[  677.960368][ T6029] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  677.979959][ T6029] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  677.988359][ T6029] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  677.996316][ T6029] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  678.004273][ T6029] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  678.012229][ T6029] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  678.020189][ T6029] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  678.028149][ T6029]  </TASK>
[  678.055168][ T6034] FAULT_INJECTION: forcing a failure.
[  678.055168][ T6034] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  678.068581][ T6034] CPU: 0 PID: 6034 Comm: syz.0.410 Not tainted syzkaller #0
[  678.075866][ T6034] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  678.085917][ T6034] Call Trace:
[  678.089183][ T6034]  <TASK>
[  678.092099][ T6034]  dump_stack_lvl+0x168/0x22e
[  678.096767][ T6034]  ? show_regs_print_info+0x12/0x12
[  678.101949][ T6034]  ? load_image+0x3b0/0x3b0
[  678.106447][ T6034]  ? __lock_acquire+0x7c50/0x7c50
[  678.111493][ T6034]  ? rcu_is_watching+0x11/0xa0
[  678.116248][ T6034]  ? lock_release+0xd4/0x910
[  678.120831][ T6034]  should_fail_ex+0x399/0x4d0
[  678.125500][ T6034]  _copy_from_user+0x2c/0x170
[  678.130174][ T6034]  kstrtouint_from_user+0xbe/0x150
[  678.135268][ T6034]  ? kstrtol_from_user+0x150/0x150
[  678.140360][ T6034]  ? lock_acquire+0xe8/0x490
[  678.144935][ T6034]  ? __mutex_trylock_common+0x14f/0x250
[  678.150463][ T6034]  ? read_lock_is_recursive+0x10/0x10
[  678.155818][ T6034]  proc_fail_nth_write+0x85/0x1f0
[  678.160825][ T6034]  ? proc_fail_nth_read+0x210/0x210
[  678.166003][ T6034]  ? common_file_perm+0x171/0x1c0
[  678.171040][ T6034]  ? preempt_count_add+0x8d/0x190
[  678.176051][ T6034]  ? proc_fail_nth_read+0x210/0x210
[  678.181248][ T6034]  vfs_write+0x2c4/0x960
[  678.185484][ T6034]  ? file_end_write+0x250/0x250
[  678.190415][ T6034]  ? __mutex_unlock_slowpath+0x19e/0x6a0
[  678.196042][ T6034]  ? __fget_files+0x28/0x4d0
[  678.200621][ T6034]  ? __fget_files+0x44a/0x4d0
[  678.205373][ T6034]  ? __fdget_pos+0x2ae/0x360
[  678.210043][ T6034]  ? ksys_write+0x71/0x240
[  678.214450][ T6034]  ksys_write+0x143/0x240
[  678.218770][ T6034]  ? __ia32_sys_read+0x80/0x80
[  678.223531][ T6034]  ? rcu_is_watching+0x11/0xa0
[  678.228287][ T6034]  do_syscall_64+0x4c/0xa0
[  678.232697][ T6034]  ? clear_bhb_loop+0x60/0xb0
[  678.237364][ T6034]  ? clear_bhb_loop+0x60/0xb0
[  678.242026][ T6034]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  678.247996][ T6034] RIP: 0033:0x7f07a958e1ff
[  678.252406][ T6034] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  678.271997][ T6034] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  678.280397][ T6034] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  678.288353][ T6034] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  678.296320][ T6034] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  678.304279][ T6034] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  678.312237][ T6034] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  678.320198][ T6034]  </TASK>
[  678.345229][ T6037] FAULT_INJECTION: forcing a failure.
[  678.345229][ T6037] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  678.358357][ T6037] CPU: 0 PID: 6037 Comm: syz.0.411 Not tainted syzkaller #0
[  678.365643][ T6037] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  678.375771][ T6037] Call Trace:
[  678.379038][ T6037]  <TASK>
[  678.381967][ T6037]  dump_stack_lvl+0x168/0x22e
[  678.386650][ T6037]  ? show_regs_print_info+0x12/0x12
[  678.391837][ T6037]  ? load_image+0x3b0/0x3b0
[  678.396344][ T6037]  ? __lock_acquire+0x7c50/0x7c50
[  678.401360][ T6037]  ? rcu_is_watching+0x11/0xa0
[  678.406112][ T6037]  ? lock_release+0xd4/0x910
[  678.410692][ T6037]  should_fail_ex+0x399/0x4d0
[  678.415363][ T6037]  _copy_from_user+0x2c/0x170
[  678.420026][ T6037]  kstrtouint_from_user+0xbe/0x150
[  678.425132][ T6037]  ? kstrtol_from_user+0x150/0x150
[  678.430231][ T6037]  ? lock_acquire+0xe8/0x490
[  678.434806][ T6037]  ? __mutex_trylock_common+0x14f/0x250
[  678.440340][ T6037]  ? read_lock_is_recursive+0x10/0x10
[  678.445692][ T6037]  proc_fail_nth_write+0x85/0x1f0
[  678.450698][ T6037]  ? proc_fail_nth_read+0x210/0x210
[  678.455878][ T6037]  ? common_file_perm+0x171/0x1c0
[  678.460886][ T6037]  ? preempt_count_add+0x8d/0x190
[  678.465900][ T6037]  ? proc_fail_nth_read+0x210/0x210
[  678.471089][ T6037]  vfs_write+0x2c4/0x960
[  678.475332][ T6037]  ? file_end_write+0x250/0x250
[  678.480168][ T6037]  ? __mutex_unlock_slowpath+0x19e/0x6a0
[  678.485803][ T6037]  ? __fget_files+0x28/0x4d0
[  678.490382][ T6037]  ? __fget_files+0x44a/0x4d0
[  678.495060][ T6037]  ? __fdget_pos+0x2ae/0x360
[  678.499651][ T6037]  ? ksys_write+0x71/0x240
[  678.504073][ T6037]  ksys_write+0x143/0x240
[  678.508400][ T6037]  ? __ia32_sys_read+0x80/0x80
[  678.513155][ T6037]  ? rcu_is_watching+0x11/0xa0
[  678.518006][ T6037]  do_syscall_64+0x4c/0xa0
[  678.522416][ T6037]  ? clear_bhb_loop+0x60/0xb0
[  678.527082][ T6037]  ? clear_bhb_loop+0x60/0xb0
[  678.531834][ T6037]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  678.537714][ T6037] RIP: 0033:0x7f07a958e1ff
[  678.542203][ T6037] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  678.561896][ T6037] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  678.570343][ T6037] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  678.578309][ T6037] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  678.586277][ T6037] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  678.594237][ T6037] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  678.602194][ T6037] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  678.610178][ T6037]  </TASK>
[  678.634754][ T6040] FAULT_INJECTION: forcing a failure.
[  678.634754][ T6040] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  678.647978][ T6040] CPU: 0 PID: 6040 Comm: syz.0.412 Not tainted syzkaller #0
[  678.655261][ T6040] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  678.665392][ T6040] Call Trace:
[  678.668654][ T6040]  <TASK>
[  678.671741][ T6040]  dump_stack_lvl+0x168/0x22e
[  678.676425][ T6040]  ? show_regs_print_info+0x12/0x12
[  678.681622][ T6040]  ? load_image+0x3b0/0x3b0
[  678.686124][ T6040]  ? __lock_acquire+0x7c50/0x7c50
[  678.691162][ T6040]  ? rcu_is_watching+0x11/0xa0
[  678.695911][ T6040]  ? lock_release+0xd4/0x910
[  678.700505][ T6040]  should_fail_ex+0x399/0x4d0
[  678.705191][ T6040]  _copy_from_user+0x2c/0x170
[  678.710213][ T6040]  kstrtouint_from_user+0xbe/0x150
[  678.715316][ T6040]  ? kstrtol_from_user+0x150/0x150
[  678.720409][ T6040]  ? lock_acquire+0xe8/0x490
[  678.724998][ T6040]  ? __mutex_trylock_common+0x14f/0x250
[  678.730543][ T6040]  ? read_lock_is_recursive+0x10/0x10
[  678.735909][ T6040]  proc_fail_nth_write+0x85/0x1f0
[  678.740921][ T6040]  ? proc_fail_nth_read+0x210/0x210
[  678.746118][ T6040]  ? common_file_perm+0x171/0x1c0
[  678.751228][ T6040]  ? preempt_count_add+0x8d/0x190
[  678.756260][ T6040]  ? proc_fail_nth_read+0x210/0x210
[  678.761674][ T6040]  vfs_write+0x2c4/0x960
[  678.766040][ T6040]  ? file_end_write+0x250/0x250
[  678.770907][ T6040]  ? __mutex_unlock_slowpath+0x19e/0x6a0
[  678.776652][ T6040]  ? __fget_files+0x28/0x4d0
[  678.781244][ T6040]  ? __fget_files+0x44a/0x4d0
[  678.785916][ T6040]  ? __fdget_pos+0x2ae/0x360
[  678.790504][ T6040]  ? ksys_write+0x71/0x240
[  678.794924][ T6040]  ksys_write+0x143/0x240
[  678.799244][ T6040]  ? __ia32_sys_read+0x80/0x80
[  678.804007][ T6040]  ? rcu_is_watching+0x11/0xa0
[  678.808854][ T6040]  do_syscall_64+0x4c/0xa0
[  678.813266][ T6040]  ? clear_bhb_loop+0x60/0xb0
[  678.817933][ T6040]  ? clear_bhb_loop+0x60/0xb0
[  678.822599][ T6040]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  678.828486][ T6040] RIP: 0033:0x7f07a958e1ff
[  678.832894][ T6040] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  678.852490][ T6040] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  678.860907][ T6040] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  678.868866][ T6040] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  678.876825][ T6040] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  678.884784][ T6040] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  678.892749][ T6040] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  678.900755][ T6040]  </TASK>
[  678.925335][ T6042] FAULT_INJECTION: forcing a failure.
[  678.925335][ T6042] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  678.938943][ T6042] CPU: 0 PID: 6042 Comm: syz.0.413 Not tainted syzkaller #0
[  678.946231][ T6042] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  678.956356][ T6042] Call Trace:
[  678.959620][ T6042]  <TASK>
[  678.962534][ T6042]  dump_stack_lvl+0x168/0x22e
[  678.967209][ T6042]  ? show_regs_print_info+0x12/0x12
[  678.972410][ T6042]  ? load_image+0x3b0/0x3b0
[  678.976897][ T6042]  ? __lock_acquire+0x7c50/0x7c50
[  678.981921][ T6042]  ? rcu_is_watching+0x11/0xa0
[  678.986687][ T6042]  ? lock_release+0xd4/0x910
[  678.991284][ T6042]  should_fail_ex+0x399/0x4d0
[  678.995969][ T6042]  _copy_from_user+0x2c/0x170
[  679.000640][ T6042]  kstrtouint_from_user+0xbe/0x150
[  679.005752][ T6042]  ? kstrtol_from_user+0x150/0x150
[  679.010850][ T6042]  ? lock_acquire+0xe8/0x490
[  679.015425][ T6042]  ? __mutex_trylock_common+0x14f/0x250
[  679.020956][ T6042]  ? read_lock_is_recursive+0x10/0x10
[  679.026311][ T6042]  proc_fail_nth_write+0x85/0x1f0
[  679.031326][ T6042]  ? proc_fail_nth_read+0x210/0x210
[  679.036507][ T6042]  ? common_file_perm+0x171/0x1c0
[  679.041528][ T6042]  ? preempt_count_add+0x8d/0x190
[  679.046544][ T6042]  ? proc_fail_nth_read+0x210/0x210
[  679.051838][ T6042]  vfs_write+0x2c4/0x960
[  679.056068][ T6042]  ? file_end_write+0x250/0x250
[  679.060899][ T6042]  ? __mutex_unlock_slowpath+0x19e/0x6a0
[  679.066516][ T6042]  ? __fget_files+0x28/0x4d0
[  679.071088][ T6042]  ? __fget_files+0x44a/0x4d0
[  679.075745][ T6042]  ? __fdget_pos+0x2ae/0x360
[  679.080312][ T6042]  ? ksys_write+0x71/0x240
[  679.084729][ T6042]  ksys_write+0x143/0x240
[  679.089040][ T6042]  ? __ia32_sys_read+0x80/0x80
[  679.093790][ T6042]  ? rcu_is_watching+0x11/0xa0
[  679.098542][ T6042]  do_syscall_64+0x4c/0xa0
[  679.102960][ T6042]  ? clear_bhb_loop+0x60/0xb0
[  679.107723][ T6042]  ? clear_bhb_loop+0x60/0xb0
[  679.112382][ T6042]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  679.118258][ T6042] RIP: 0033:0x7f07a958e1ff
[  679.122668][ T6042] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  679.142350][ T6042] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  679.150742][ T6042] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  679.158692][ T6042] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  679.166641][ T6042] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  679.174592][ T6042] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  679.182541][ T6042] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  679.190496][ T6042]  </TASK>
[  679.214927][ T6044] FAULT_INJECTION: forcing a failure.
[  679.214927][ T6044] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  679.228101][ T6044] CPU: 0 PID: 6044 Comm: syz.0.414 Not tainted syzkaller #0
[  679.235372][ T6044] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  679.245424][ T6044] Call Trace:
[  679.248687][ T6044]  <TASK>
[  679.251625][ T6044]  dump_stack_lvl+0x168/0x22e
[  679.256288][ T6044]  ? show_regs_print_info+0x12/0x12
[  679.261473][ T6044]  ? load_image+0x3b0/0x3b0
[  679.265962][ T6044]  ? __lock_acquire+0x7c50/0x7c50
[  679.270980][ T6044]  ? rcu_is_watching+0x11/0xa0
[  679.275725][ T6044]  ? lock_release+0xd4/0x910
[  679.280297][ T6044]  should_fail_ex+0x399/0x4d0
[  679.284964][ T6044]  _copy_from_user+0x2c/0x170
[  679.289620][ T6044]  kstrtouint_from_user+0xbe/0x150
[  679.294712][ T6044]  ? kstrtol_from_user+0x150/0x150
[  679.299828][ T6044]  ? lock_acquire+0xe8/0x490
[  679.304396][ T6044]  ? __mutex_trylock_common+0x14f/0x250
[  679.309918][ T6044]  ? read_lock_is_recursive+0x10/0x10
[  679.315271][ T6044]  proc_fail_nth_write+0x85/0x1f0
[  679.320289][ T6044]  ? proc_fail_nth_read+0x210/0x210
[  679.325467][ T6044]  ? common_file_perm+0x171/0x1c0
[  679.330479][ T6044]  ? preempt_count_add+0x8d/0x190
[  679.335499][ T6044]  ? proc_fail_nth_read+0x210/0x210
[  679.340707][ T6044]  vfs_write+0x2c4/0x960
[  679.344957][ T6044]  ? file_end_write+0x250/0x250
[  679.349799][ T6044]  ? __mutex_unlock_slowpath+0x19e/0x6a0
[  679.355426][ T6044]  ? __fget_files+0x28/0x4d0
[  679.360093][ T6044]  ? __fget_files+0x44a/0x4d0
[  679.364763][ T6044]  ? __fdget_pos+0x2ae/0x360
[  679.369352][ T6044]  ? ksys_write+0x71/0x240
[  679.373760][ T6044]  ksys_write+0x143/0x240
[  679.378079][ T6044]  ? __ia32_sys_read+0x80/0x80
[  679.382829][ T6044]  ? rcu_is_watching+0x11/0xa0
[  679.387586][ T6044]  do_syscall_64+0x4c/0xa0
[  679.391994][ T6044]  ? clear_bhb_loop+0x60/0xb0
[  679.396660][ T6044]  ? clear_bhb_loop+0x60/0xb0
[  679.401324][ T6044]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  679.407202][ T6044] RIP: 0033:0x7f07a958e1ff
[  679.411601][ T6044] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  679.431193][ T6044] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  679.439594][ T6044] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  679.447553][ T6044] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  679.455521][ T6044] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  679.463477][ T6044] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  679.471437][ T6044] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  679.479403][ T6044]  </TASK>
[  679.505192][ T6048] FAULT_INJECTION: forcing a failure.
[  679.505192][ T6048] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  679.518337][ T6048] CPU: 0 PID: 6048 Comm: syz.0.415 Not tainted syzkaller #0
[  679.525636][ T6048] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  679.535684][ T6048] Call Trace:
[  679.538947][ T6048]  <TASK>
[  679.541863][ T6048]  dump_stack_lvl+0x168/0x22e
[  679.546532][ T6048]  ? show_regs_print_info+0x12/0x12
[  679.551727][ T6048]  ? load_image+0x3b0/0x3b0
[  679.556244][ T6048]  ? __lock_acquire+0x7c50/0x7c50
[  679.561256][ T6048]  ? rcu_is_watching+0x11/0xa0
[  679.566092][ T6048]  ? lock_release+0xd4/0x910
[  679.570752][ T6048]  should_fail_ex+0x399/0x4d0
[  679.575414][ T6048]  _copy_from_user+0x2c/0x170
[  679.580069][ T6048]  kstrtouint_from_user+0xbe/0x150
[  679.585170][ T6048]  ? kstrtol_from_user+0x150/0x150
[  679.590297][ T6048]  ? lock_acquire+0xe8/0x490
[  679.594907][ T6048]  ? __mutex_trylock_common+0x14f/0x250
[  679.600475][ T6048]  ? read_lock_is_recursive+0x10/0x10
[  679.605937][ T6048]  proc_fail_nth_write+0x85/0x1f0
[  679.610951][ T6048]  ? proc_fail_nth_read+0x210/0x210
[  679.616131][ T6048]  ? common_file_perm+0x171/0x1c0
[  679.621146][ T6048]  ? preempt_count_add+0x8d/0x190
[  679.626165][ T6048]  ? proc_fail_nth_read+0x210/0x210
[  679.631353][ T6048]  vfs_write+0x2c4/0x960
[  679.635588][ T6048]  ? file_end_write+0x250/0x250
[  679.640424][ T6048]  ? __mutex_unlock_slowpath+0x19e/0x6a0
[  679.646049][ T6048]  ? __fget_files+0x28/0x4d0
[  679.650636][ T6048]  ? __fget_files+0x44a/0x4d0
[  679.655305][ T6048]  ? __fdget_pos+0x2ae/0x360
[  679.659883][ T6048]  ? ksys_write+0x71/0x240
[  679.664291][ T6048]  ksys_write+0x143/0x240
[  679.668611][ T6048]  ? __ia32_sys_read+0x80/0x80
[  679.673370][ T6048]  ? rcu_is_watching+0x11/0xa0
[  679.678129][ T6048]  do_syscall_64+0x4c/0xa0
[  679.682538][ T6048]  ? clear_bhb_loop+0x60/0xb0
[  679.687203][ T6048]  ? clear_bhb_loop+0x60/0xb0
[  679.691866][ T6048]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  679.697744][ T6048] RIP: 0033:0x7f07a958e1ff
[  679.702147][ T6048] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  679.721745][ T6048] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  679.730143][ T6048] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  679.738103][ T6048] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  679.746058][ T6048] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  679.754032][ T6048] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  679.761997][ T6048] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  679.769980][ T6048]  </TASK>
[  679.795275][ T6050] FAULT_INJECTION: forcing a failure.
[  679.795275][ T6050] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  679.808454][ T6050] CPU: 0 PID: 6050 Comm: syz.0.416 Not tainted syzkaller #0
[  679.815731][ T6050] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  679.825858][ T6050] Call Trace:
[  679.829125][ T6050]  <TASK>
[  679.832051][ T6050]  dump_stack_lvl+0x168/0x22e
[  679.836717][ T6050]  ? show_regs_print_info+0x12/0x12
[  679.842037][ T6050]  ? load_image+0x3b0/0x3b0
[  679.846533][ T6050]  ? __lock_acquire+0x7c50/0x7c50
[  679.851546][ T6050]  ? rcu_is_watching+0x11/0xa0
2026/01/15 03:36:37 executed programs: 401
[  679.856301][ T6050]  ? lock_release+0xd4/0x910
[  679.860882][ T6050]  should_fail_ex+0x399/0x4d0
[  679.865568][ T6050]  _copy_from_user+0x2c/0x170
[  679.870236][ T6050]  kstrtouint_from_user+0xbe/0x150
[  679.875337][ T6050]  ? kstrtol_from_user+0x150/0x150
[  679.880434][ T6050]  ? lock_acquire+0xe8/0x490
[  679.885006][ T6050]  ? __mutex_trylock_common+0x14f/0x250
[  679.890533][ T6050]  ? read_lock_is_recursive+0x10/0x10
[  679.895901][ T6050]  proc_fail_nth_write+0x85/0x1f0
[  679.900929][ T6050]  ? proc_fail_nth_read+0x210/0x210
[  679.906119][ T6050]  ? common_file_perm+0x171/0x1c0
[  679.911324][ T6050]  ? preempt_count_add+0x8d/0x190
[  679.916367][ T6050]  ? proc_fail_nth_read+0x210/0x210
[  679.921554][ T6050]  vfs_write+0x2c4/0x960
[  679.925782][ T6050]  ? file_end_write+0x250/0x250
[  679.930614][ T6050]  ? __mutex_unlock_slowpath+0x19e/0x6a0
[  679.936237][ T6050]  ? __fget_files+0x28/0x4d0
[  679.940808][ T6050]  ? __fget_files+0x44a/0x4d0
[  679.945554][ T6050]  ? __fdget_pos+0x2ae/0x360
[  679.950122][ T6050]  ? ksys_write+0x71/0x240
[  679.954520][ T6050]  ksys_write+0x143/0x240
[  679.958835][ T6050]  ? __ia32_sys_read+0x80/0x80
[  679.963582][ T6050]  ? rcu_is_watching+0x11/0xa0
[  679.968328][ T6050]  do_syscall_64+0x4c/0xa0
[  679.972726][ T6050]  ? clear_bhb_loop+0x60/0xb0
[  679.977381][ T6050]  ? clear_bhb_loop+0x60/0xb0
[  679.982040][ T6050]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  679.987920][ T6050] RIP: 0033:0x7f07a958e1ff
[  679.992316][ T6050] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  680.011902][ T6050] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  680.020315][ T6050] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  680.028286][ T6050] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  680.036234][ T6050] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  680.044186][ T6050] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  680.052153][ T6050] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  680.060134][ T6050]  </TASK>
[  680.085316][ T6052] FAULT_INJECTION: forcing a failure.
[  680.085316][ T6052] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  680.098449][ T6052] CPU: 0 PID: 6052 Comm: syz.0.417 Not tainted syzkaller #0
[  680.105828][ T6052] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  680.115962][ T6052] Call Trace:
[  680.119236][ T6052]  <TASK>
[  680.122153][ T6052]  dump_stack_lvl+0x168/0x22e
[  680.126821][ T6052]  ? show_regs_print_info+0x12/0x12
[  680.132011][ T6052]  ? load_image+0x3b0/0x3b0
[  680.136503][ T6052]  ? __lock_acquire+0x7c50/0x7c50
[  680.141513][ T6052]  ? rcu_is_watching+0x11/0xa0
[  680.146263][ T6052]  ? lock_release+0xd4/0x910
[  680.150864][ T6052]  should_fail_ex+0x399/0x4d0
[  680.155547][ T6052]  _copy_from_user+0x2c/0x170
[  680.160231][ T6052]  kstrtouint_from_user+0xbe/0x150
[  680.165450][ T6052]  ? kstrtol_from_user+0x150/0x150
[  680.170554][ T6052]  ? lock_acquire+0xe8/0x490
[  680.175132][ T6052]  ? __mutex_trylock_common+0x14f/0x250
[  680.180661][ T6052]  ? read_lock_is_recursive+0x10/0x10
[  680.186017][ T6052]  proc_fail_nth_write+0x85/0x1f0
[  680.191023][ T6052]  ? proc_fail_nth_read+0x210/0x210
[  680.196204][ T6052]  ? common_file_perm+0x171/0x1c0
[  680.201216][ T6052]  ? preempt_count_add+0x8d/0x190
[  680.206232][ T6052]  ? proc_fail_nth_read+0x210/0x210
[  680.211468][ T6052]  vfs_write+0x2c4/0x960
[  680.215712][ T6052]  ? file_end_write+0x250/0x250
[  680.220727][ T6052]  ? __mutex_unlock_slowpath+0x19e/0x6a0
[  680.226350][ T6052]  ? __fget_files+0x28/0x4d0
[  680.230929][ T6052]  ? __fget_files+0x44a/0x4d0
[  680.235596][ T6052]  ? __fdget_pos+0x2ae/0x360
[  680.240172][ T6052]  ? ksys_write+0x71/0x240
[  680.244585][ T6052]  ksys_write+0x143/0x240
[  680.248911][ T6052]  ? __ia32_sys_read+0x80/0x80
[  680.253666][ T6052]  ? rcu_is_watching+0x11/0xa0
[  680.258425][ T6052]  do_syscall_64+0x4c/0xa0
[  680.262834][ T6052]  ? clear_bhb_loop+0x60/0xb0
[  680.267507][ T6052]  ? clear_bhb_loop+0x60/0xb0
[  680.272199][ T6052]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  680.278083][ T6052] RIP: 0033:0x7f07a958e1ff
[  680.282486][ T6052] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  680.302092][ T6052] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  680.310613][ T6052] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  680.318572][ T6052] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  680.326617][ T6052] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  680.334575][ T6052] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  680.342644][ T6052] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  680.350624][ T6052]  </TASK>
[  680.396825][ T6054] FAULT_INJECTION: forcing a failure.
[  680.396825][ T6054] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  680.411731][ T6054] CPU: 1 PID: 6054 Comm: syz.0.418 Not tainted syzkaller #0
[  680.419056][ T6054] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  680.429221][ T6054] Call Trace:
[  680.432531][ T6054]  <TASK>
[  680.435477][ T6054]  dump_stack_lvl+0x168/0x22e
[  680.440182][ T6054]  ? show_regs_print_info+0x12/0x12
[  680.445465][ T6054]  ? load_image+0x3b0/0x3b0
[  680.449964][ T6054]  ? __lock_acquire+0x7c50/0x7c50
[  680.455228][ T6054]  ? rcu_is_watching+0x11/0xa0
[  680.459988][ T6054]  ? lock_release+0xd4/0x910
[  680.464585][ T6054]  should_fail_ex+0x399/0x4d0
[  680.469265][ T6054]  _copy_from_user+0x2c/0x170
[  680.473935][ T6054]  kstrtouint_from_user+0xbe/0x150
[  680.479133][ T6054]  ? kstrtol_from_user+0x150/0x150
[  680.484236][ T6054]  ? lock_acquire+0xe8/0x490
[  680.488815][ T6054]  ? __mutex_trylock_common+0x14f/0x250
[  680.494358][ T6054]  ? read_lock_is_recursive+0x10/0x10
[  680.499808][ T6054]  proc_fail_nth_write+0x85/0x1f0
[  680.504818][ T6054]  ? proc_fail_nth_read+0x210/0x210
[  680.509998][ T6054]  ? common_file_perm+0x171/0x1c0
[  680.515017][ T6054]  ? preempt_count_add+0x8d/0x190
[  680.520045][ T6054]  ? proc_fail_nth_read+0x210/0x210
[  680.525598][ T6054]  vfs_write+0x2c4/0x960
[  680.529925][ T6054]  ? file_end_write+0x250/0x250
[  680.534774][ T6054]  ? __mutex_unlock_slowpath+0x19e/0x6a0
[  680.540397][ T6054]  ? __fget_files+0x28/0x4d0
[  680.545013][ T6054]  ? __fget_files+0x44a/0x4d0
[  680.549698][ T6054]  ? __fdget_pos+0x2ae/0x360
[  680.554292][ T6054]  ? ksys_write+0x71/0x240
[  680.558792][ T6054]  ksys_write+0x143/0x240
[  680.563129][ T6054]  ? __ia32_sys_read+0x80/0x80
[  680.567885][ T6054]  ? rcu_is_watching+0x11/0xa0
[  680.572643][ T6054]  do_syscall_64+0x4c/0xa0
[  680.577056][ T6054]  ? clear_bhb_loop+0x60/0xb0
[  680.581725][ T6054]  ? clear_bhb_loop+0x60/0xb0
[  680.586415][ T6054]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  680.592297][ T6054] RIP: 0033:0x7f07a958e1ff
[  680.596701][ T6054] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  680.616293][ T6054] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  680.624697][ T6054] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  680.632656][ T6054] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  680.640617][ T6054] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  680.648582][ T6054] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  680.656539][ T6054] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  680.664523][ T6054]  </TASK>
[  680.694967][ T6059] FAULT_INJECTION: forcing a failure.
[  680.694967][ T6059] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  680.708364][ T6059] CPU: 0 PID: 6059 Comm: syz.0.419 Not tainted syzkaller #0
[  680.715663][ T6059] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  680.725703][ T6059] Call Trace:
[  680.728969][ T6059]  <TASK>
[  680.731921][ T6059]  dump_stack_lvl+0x168/0x22e
[  680.736625][ T6059]  ? show_regs_print_info+0x12/0x12
[  680.741813][ T6059]  ? load_image+0x3b0/0x3b0
[  680.746321][ T6059]  ? __lock_acquire+0x7c50/0x7c50
[  680.751352][ T6059]  ? rcu_is_watching+0x11/0xa0
[  680.756152][ T6059]  ? lock_release+0xd4/0x910
[  680.760736][ T6059]  should_fail_ex+0x399/0x4d0
[  680.765416][ T6059]  _copy_from_user+0x2c/0x170
[  680.770086][ T6059]  kstrtouint_from_user+0xbe/0x150
[  680.775190][ T6059]  ? kstrtol_from_user+0x150/0x150
[  680.780293][ T6059]  ? lock_acquire+0xe8/0x490
[  680.784887][ T6059]  ? __mutex_trylock_common+0x14f/0x250
[  680.790437][ T6059]  ? read_lock_is_recursive+0x10/0x10
[  680.795808][ T6059]  proc_fail_nth_write+0x85/0x1f0
[  680.800824][ T6059]  ? proc_fail_nth_read+0x210/0x210
[  680.806004][ T6059]  ? common_file_perm+0x171/0x1c0
[  680.811015][ T6059]  ? preempt_count_add+0x8d/0x190
[  680.816034][ T6059]  ? proc_fail_nth_read+0x210/0x210
[  680.821224][ T6059]  vfs_write+0x2c4/0x960
[  680.825466][ T6059]  ? file_end_write+0x250/0x250
[  680.830308][ T6059]  ? __mutex_unlock_slowpath+0x19e/0x6a0
[  680.835939][ T6059]  ? __fget_files+0x28/0x4d0
[  680.840518][ T6059]  ? __fget_files+0x44a/0x4d0
[  680.845203][ T6059]  ? __fdget_pos+0x2ae/0x360
[  680.849781][ T6059]  ? ksys_write+0x71/0x240
[  680.854190][ T6059]  ksys_write+0x143/0x240
[  680.858509][ T6059]  ? __ia32_sys_read+0x80/0x80
[  680.863260][ T6059]  ? rcu_is_watching+0x11/0xa0
[  680.868038][ T6059]  do_syscall_64+0x4c/0xa0
[  680.872454][ T6059]  ? clear_bhb_loop+0x60/0xb0
[  680.877123][ T6059]  ? clear_bhb_loop+0x60/0xb0
[  680.881789][ T6059]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  680.887671][ T6059] RIP: 0033:0x7f07a958e1ff
[  680.892072][ T6059] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  680.911764][ T6059] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  680.920172][ T6059] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  680.928129][ T6059] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  680.936103][ T6059] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  680.944081][ T6059] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  680.952055][ T6059] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  680.960028][ T6059]  </TASK>
[  680.988089][ T6064] FAULT_INJECTION: forcing a failure.
[  680.988089][ T6064] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  681.001415][ T6064] CPU: 1 PID: 6064 Comm: syz.0.420 Not tainted syzkaller #0
[  681.008711][ T6064] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  681.018768][ T6064] Call Trace:
[  681.022037][ T6064]  <TASK>
[  681.024952][ T6064]  dump_stack_lvl+0x168/0x22e
[  681.029628][ T6064]  ? show_regs_print_info+0x12/0x12
[  681.034809][ T6064]  ? load_image+0x3b0/0x3b0
[  681.039306][ T6064]  ? __lock_acquire+0x7c50/0x7c50
[  681.044389][ T6064]  ? rcu_is_watching+0x11/0xa0
[  681.049174][ T6064]  ? lock_release+0xd4/0x910
[  681.054234][ T6064]  should_fail_ex+0x399/0x4d0
[  681.058904][ T6064]  _copy_from_user+0x2c/0x170
[  681.063570][ T6064]  kstrtouint_from_user+0xbe/0x150
[  681.068671][ T6064]  ? kstrtol_from_user+0x150/0x150
[  681.073782][ T6064]  ? lock_acquire+0xe8/0x490
[  681.078377][ T6064]  ? __mutex_trylock_common+0x14f/0x250
[  681.083914][ T6064]  ? read_lock_is_recursive+0x10/0x10
[  681.089280][ T6064]  proc_fail_nth_write+0x85/0x1f0
[  681.094291][ T6064]  ? proc_fail_nth_read+0x210/0x210
[  681.099473][ T6064]  ? common_file_perm+0x171/0x1c0
[  681.104489][ T6064]  ? preempt_count_add+0x8d/0x190
[  681.109507][ T6064]  ? proc_fail_nth_read+0x210/0x210
[  681.114691][ T6064]  vfs_write+0x2c4/0x960
[  681.118926][ T6064]  ? file_end_write+0x250/0x250
[  681.123763][ T6064]  ? __mutex_unlock_slowpath+0x19e/0x6a0
[  681.129404][ T6064]  ? __fget_files+0x28/0x4d0
[  681.134419][ T6064]  ? __fget_files+0x44a/0x4d0
[  681.139087][ T6064]  ? __fdget_pos+0x2ae/0x360
[  681.143676][ T6064]  ? ksys_write+0x71/0x240
[  681.148083][ T6064]  ksys_write+0x143/0x240
[  681.152407][ T6064]  ? __ia32_sys_read+0x80/0x80
[  681.157159][ T6064]  ? rcu_is_watching+0x11/0xa0
[  681.161914][ T6064]  do_syscall_64+0x4c/0xa0
[  681.166321][ T6064]  ? clear_bhb_loop+0x60/0xb0
[  681.170988][ T6064]  ? clear_bhb_loop+0x60/0xb0
[  681.175655][ T6064]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  681.181542][ T6064] RIP: 0033:0x7f07a958e1ff
[  681.185945][ T6064] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  681.205553][ T6064] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  681.214040][ T6064] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  681.222004][ T6064] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  681.229963][ T6064] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  681.237919][ T6064] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  681.245880][ T6064] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  681.253846][ T6064]  </TASK>
[  681.286649][ T6069] FAULT_INJECTION: forcing a failure.
[  681.286649][ T6069] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  681.300278][ T6069] CPU: 0 PID: 6069 Comm: syz.0.421 Not tainted syzkaller #0
[  681.307579][ T6069] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  681.317622][ T6069] Call Trace:
[  681.320888][ T6069]  <TASK>
[  681.323811][ T6069]  dump_stack_lvl+0x168/0x22e
[  681.328487][ T6069]  ? show_regs_print_info+0x12/0x12
[  681.333673][ T6069]  ? load_image+0x3b0/0x3b0
[  681.338164][ T6069]  ? __lock_acquire+0x7c50/0x7c50
[  681.343184][ T6069]  ? rcu_is_watching+0x11/0xa0
[  681.347951][ T6069]  ? lock_release+0xd4/0x910
[  681.352531][ T6069]  should_fail_ex+0x399/0x4d0
[  681.357200][ T6069]  _copy_from_user+0x2c/0x170
[  681.361860][ T6069]  kstrtouint_from_user+0xbe/0x150
[  681.366961][ T6069]  ? kstrtol_from_user+0x150/0x150
[  681.372049][ T6069]  ? lock_acquire+0xe8/0x490
[  681.376636][ T6069]  ? __mutex_trylock_common+0x14f/0x250
[  681.382371][ T6069]  ? read_lock_is_recursive+0x10/0x10
[  681.387746][ T6069]  proc_fail_nth_write+0x85/0x1f0
[  681.392764][ T6069]  ? proc_fail_nth_read+0x210/0x210
[  681.397959][ T6069]  ? common_file_perm+0x171/0x1c0
[  681.402983][ T6069]  ? preempt_count_add+0x8d/0x190
[  681.408004][ T6069]  ? proc_fail_nth_read+0x210/0x210
[  681.413625][ T6069]  vfs_write+0x2c4/0x960
[  681.417864][ T6069]  ? file_end_write+0x250/0x250
[  681.422700][ T6069]  ? __mutex_unlock_slowpath+0x19e/0x6a0
[  681.428324][ T6069]  ? __fget_files+0x28/0x4d0
[  681.432903][ T6069]  ? __fget_files+0x44a/0x4d0
[  681.437773][ T6069]  ? __fdget_pos+0x2ae/0x360
[  681.442404][ T6069]  ? ksys_write+0x71/0x240
[  681.446823][ T6069]  ksys_write+0x143/0x240
[  681.451168][ T6069]  ? __ia32_sys_read+0x80/0x80
[  681.455941][ T6069]  ? rcu_is_watching+0x11/0xa0
[  681.460702][ T6069]  do_syscall_64+0x4c/0xa0
[  681.465113][ T6069]  ? clear_bhb_loop+0x60/0xb0
[  681.469781][ T6069]  ? clear_bhb_loop+0x60/0xb0
[  681.474470][ T6069]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  681.480541][ T6069] RIP: 0033:0x7f07a958e1ff
[  681.484958][ T6069] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  681.504657][ T6069] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  681.513097][ T6069] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  681.521059][ T6069] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  681.529018][ T6069] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  681.536975][ T6069] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  681.544936][ T6069] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  681.552927][ T6069]  </TASK>
[  681.579624][ T6072] FAULT_INJECTION: forcing a failure.
[  681.579624][ T6072] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  681.593090][ T6072] CPU: 1 PID: 6072 Comm: syz.0.422 Not tainted syzkaller #0
[  681.600379][ T6072] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  681.610432][ T6072] Call Trace:
[  681.613705][ T6072]  <TASK>
[  681.616628][ T6072]  dump_stack_lvl+0x168/0x22e
[  681.621294][ T6072]  ? show_regs_print_info+0x12/0x12
[  681.626569][ T6072]  ? load_image+0x3b0/0x3b0
[  681.631073][ T6072]  ? __lock_acquire+0x7c50/0x7c50
[  681.636141][ T6072]  ? rcu_is_watching+0x11/0xa0
[  681.640914][ T6072]  ? lock_release+0xd4/0x910
[  681.645502][ T6072]  should_fail_ex+0x399/0x4d0
[  681.650178][ T6072]  _copy_from_user+0x2c/0x170
[  681.654857][ T6072]  kstrtouint_from_user+0xbe/0x150
[  681.659988][ T6072]  ? kstrtol_from_user+0x150/0x150
[  681.665096][ T6072]  ? lock_acquire+0xe8/0x490
[  681.669726][ T6072]  ? __mutex_trylock_common+0x14f/0x250
[  681.675272][ T6072]  ? read_lock_is_recursive+0x10/0x10
[  681.680631][ T6072]  proc_fail_nth_write+0x85/0x1f0
[  681.685643][ T6072]  ? proc_fail_nth_read+0x210/0x210
[  681.690867][ T6072]  ? common_file_perm+0x171/0x1c0
[  681.695913][ T6072]  ? preempt_count_add+0x8d/0x190
[  681.700945][ T6072]  ? proc_fail_nth_read+0x210/0x210
[  681.706146][ T6072]  vfs_write+0x2c4/0x960
[  681.710385][ T6072]  ? file_end_write+0x250/0x250
[  681.715239][ T6072]  ? __mutex_unlock_slowpath+0x19e/0x6a0
[  681.720863][ T6072]  ? __fget_files+0x28/0x4d0
[  681.725484][ T6072]  ? __fget_files+0x44a/0x4d0
[  681.730160][ T6072]  ? __fdget_pos+0x2ae/0x360
[  681.734750][ T6072]  ? ksys_write+0x71/0x240
[  681.739162][ T6072]  ksys_write+0x143/0x240
[  681.743514][ T6072]  ? __ia32_sys_read+0x80/0x80
[  681.748265][ T6072]  ? rcu_is_watching+0x11/0xa0
[  681.753021][ T6072]  do_syscall_64+0x4c/0xa0
[  681.757432][ T6072]  ? clear_bhb_loop+0x60/0xb0
[  681.762101][ T6072]  ? clear_bhb_loop+0x60/0xb0
[  681.766775][ T6072]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  681.772664][ T6072] RIP: 0033:0x7f07a958e1ff
[  681.777072][ T6072] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  681.796673][ T6072] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  681.805080][ T6072] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  681.813041][ T6072] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  681.821007][ T6072] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  681.828969][ T6072] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  681.836927][ T6072] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  681.844890][ T6072]  </TASK>
[  681.875388][ T6077] FAULT_INJECTION: forcing a failure.
[  681.875388][ T6077] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  681.888944][ T6077] CPU: 0 PID: 6077 Comm: syz.0.423 Not tainted syzkaller #0
[  681.896229][ T6077] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  681.906281][ T6077] Call Trace:
[  681.909551][ T6077]  <TASK>
[  681.912466][ T6077]  dump_stack_lvl+0x168/0x22e
[  681.917137][ T6077]  ? show_regs_print_info+0x12/0x12
[  681.922337][ T6077]  ? load_image+0x3b0/0x3b0
[  681.926823][ T6077]  ? __lock_acquire+0x7c50/0x7c50
[  681.931832][ T6077]  ? rcu_is_watching+0x11/0xa0
[  681.936593][ T6077]  ? lock_release+0xd4/0x910
[  681.941179][ T6077]  should_fail_ex+0x399/0x4d0
[  681.945950][ T6077]  _copy_from_user+0x2c/0x170
[  681.950612][ T6077]  kstrtouint_from_user+0xbe/0x150
[  681.955857][ T6077]  ? kstrtol_from_user+0x150/0x150
[  681.960950][ T6077]  ? lock_acquire+0xe8/0x490
[  681.965522][ T6077]  ? __mutex_trylock_common+0x14f/0x250
[  681.971046][ T6077]  ? read_lock_is_recursive+0x10/0x10
[  681.976402][ T6077]  proc_fail_nth_write+0x85/0x1f0
[  681.981408][ T6077]  ? proc_fail_nth_read+0x210/0x210
[  681.986583][ T6077]  ? common_file_perm+0x171/0x1c0
[  681.991592][ T6077]  ? preempt_count_add+0x8d/0x190
[  681.996598][ T6077]  ? proc_fail_nth_read+0x210/0x210
[  682.001773][ T6077]  vfs_write+0x2c4/0x960
[  682.006005][ T6077]  ? file_end_write+0x250/0x250
[  682.010841][ T6077]  ? __mutex_unlock_slowpath+0x19e/0x6a0
[  682.016486][ T6077]  ? __fget_files+0x28/0x4d0
[  682.021059][ T6077]  ? __fget_files+0x44a/0x4d0
[  682.025722][ T6077]  ? __fdget_pos+0x2ae/0x360
[  682.030306][ T6077]  ? ksys_write+0x71/0x240
[  682.034763][ T6077]  ksys_write+0x143/0x240
[  682.039178][ T6077]  ? __ia32_sys_read+0x80/0x80
[  682.043976][ T6077]  ? rcu_is_watching+0x11/0xa0
[  682.048744][ T6077]  do_syscall_64+0x4c/0xa0
[  682.053145][ T6077]  ? clear_bhb_loop+0x60/0xb0
[  682.057807][ T6077]  ? clear_bhb_loop+0x60/0xb0
[  682.062479][ T6077]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  682.068359][ T6077] RIP: 0033:0x7f07a958e1ff
[  682.072760][ T6077] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  682.092353][ T6077] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  682.100756][ T6077] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  682.108721][ T6077] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  682.116676][ T6077] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  682.124638][ T6077] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  682.132587][ T6077] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  682.140587][ T6077]  </TASK>
[  682.165001][ T6079] FAULT_INJECTION: forcing a failure.
[  682.165001][ T6079] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  682.178157][ T6079] CPU: 0 PID: 6079 Comm: syz.0.424 Not tainted syzkaller #0
[  682.185432][ T6079] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[  682.195475][ T6079] Call Trace:
[  682.198736][ T6079]  <TASK>
[  682.201649][ T6079]  dump_stack_lvl+0x168/0x22e
[  682.206404][ T6079]  ? show_regs_print_info+0x12/0x12
[  682.211629][ T6079]  ? load_image+0x3b0/0x3b0
[  682.216124][ T6079]  ? __lock_acquire+0x7c50/0x7c50
[  682.221306][ T6079]  ? rcu_is_watching+0x11/0xa0
[  682.226058][ T6079]  ? lock_release+0xd4/0x910
[  682.230630][ T6079]  should_fail_ex+0x399/0x4d0
[  682.235299][ T6079]  _copy_from_user+0x2c/0x170
[  682.239961][ T6079]  kstrtouint_from_user+0xbe/0x150
[  682.245059][ T6079]  ? kstrtol_from_user+0x150/0x150
[  682.250159][ T6079]  ? lock_acquire+0xe8/0x490
[  682.254730][ T6079]  ? __mutex_trylock_common+0x14f/0x250
[  682.260263][ T6079]  ? read_lock_is_recursive+0x10/0x10
[  682.265618][ T6079]  proc_fail_nth_write+0x85/0x1f0
[  682.270714][ T6079]  ? proc_fail_nth_read+0x210/0x210
[  682.275917][ T6079]  ? common_file_perm+0x171/0x1c0
[  682.281202][ T6079]  ? preempt_count_add+0x8d/0x190
[  682.286237][ T6079]  ? proc_fail_nth_read+0x210/0x210
[  682.291450][ T6079]  vfs_write+0x2c4/0x960
[  682.295735][ T6079]  ? file_end_write+0x250/0x250
[  682.300602][ T6079]  ? __mutex_unlock_slowpath+0x19e/0x6a0
[  682.306253][ T6079]  ? __fget_files+0x28/0x4d0
[  682.310853][ T6079]  ? __fget_files+0x44a/0x4d0
[  682.315528][ T6079]  ? __fdget_pos+0x2ae/0x360
[  682.320110][ T6079]  ? ksys_write+0x71/0x240
[  682.324516][ T6079]  ksys_write+0x143/0x240
[  682.328834][ T6079]  ? __ia32_sys_read+0x80/0x80
[  682.333589][ T6079]  ? rcu_is_watching+0x11/0xa0
[  682.338345][ T6079]  do_syscall_64+0x4c/0xa0
[  682.342760][ T6079]  ? clear_bhb_loop+0x60/0xb0
[  682.347438][ T6079]  ? clear_bhb_loop+0x60/0xb0
[  682.352103][ T6079]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[  682.357986][ T6079] RIP: 0033:0x7f07a958e1ff
[  682.362393][ T6079] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
[  682.382252][ T6079] RSP: 002b:00007f07aa4c8030 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  682.390652][ T6079] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f07a958e1ff
[  682.398610][ T6079] RDX: 0000000000000001 RSI: 00007f07aa4c80a0 RDI: 0000000000000006
[  682.407003][ T6079] RBP: 00007f07aa4c8090 R08: 0000000000000000 R09: 0000000000000000
[  682.414960][ T6079] R10: 000000000000021c R11: 0000000000000293 R12: 0000000000000001
[  682.422923][ T6079] R13: 00007f07a97e6038 R14: 00007f07a97e5fa0 R15: 00007fff8a53dbc8
[  682.430905][ T6079]  </TASK>
[  682.457132][ T6081] FAULT_INJECTION: forcing a failure.
[  682.457132][ T6081] name fail_usercopy, interval 1, probability 0, space 0, times 0
[  682.470426][ T6081] CPU: 1 PID: 6081 Comm: syz.0.425 Not tainted syzkaller #0