0x14/0x20 [ 57.642575][ T439] ? _raw_spin_lock+0x94/0xf0 [ 57.647253][ T439] ? bdi_register_va+0x5f0/0x5f0 [ 57.652175][ T439] ? hashlen_string+0x55/0x120 [ 57.656923][ T439] ? blk_alloc_devt+0xda/0x330 [ 57.661671][ T439] __device_add_disk+0x538/0x1010 [ 57.666682][ T439] device_add_disk_no_queue_reg+0x21/0x30 [ 57.672408][ T439] dm_create+0x992/0xdd0 [ 57.676634][ T439] dev_create+0x12e/0x2c0 [ 57.680940][ T439] ? list_devices+0x570/0x570 [ 57.685604][ T439] ? __kasan_check_write+0x14/0x20 [ 57.690695][ T439] ? _copy_from_user+0x95/0xd0 [ 57.695457][ T439] dm_ctl_ioctl+0x8ee/0xca0 [ 57.699941][ T439] ? list_devices+0x570/0x570 [ 57.704594][ T439] ? dm_poll+0x120/0x120 [ 57.708825][ T439] ? security_file_ioctl+0x84/0xa0 [ 57.713928][ T439] ? dm_poll+0x120/0x120 [ 57.718156][ T439] __se_sys_ioctl+0x121/0x1a0 [ 57.722814][ T439] __x64_sys_ioctl+0x7b/0x90 [ 57.727386][ T439] do_syscall_64+0x31/0x40 [ 57.731789][ T439] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 57.737665][ T439] RIP: 0033:0x7fa7decc71d9 [ 57.742072][ T439] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 57.761672][ T439] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 57.770072][ T439] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 57.778033][ T439] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 57.785989][ T439] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 57.793978][ T439] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 57.801936][ T439] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 57.810064][ T439] ------------[ cut here ]------------ [ 57.815626][ T439] WARNING: CPU: 0 PID: 439 at block/genhd.c:821 __device_add_disk+0xcf9/0x1010 [ 57.824578][ T439] Modules linked in: [ 57.828553][ T439] CPU: 0 PID: 439 Comm: syz.2.33 Tainted: G W syzkaller #0 [ 57.837254][ T439] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 57.847360][ T439] RIP: 0010:__device_add_disk+0xcf9/0x1010 [ 57.853382][ T439] Code: ff e8 fb 8a 31 ff 0f 0b e9 74 fe ff ff e8 ef 8a 31 ff 0f 0b e9 64 f4 ff ff e8 e3 8a 31 ff 0f 0b e9 a4 f9 ff ff e8 d7 8a 31 ff <0f> 0b e9 52 f8 ff ff e8 cb 8a 31 ff e9 77 fd ff ff e8 c1 8a 31 ff [ 57.873123][ T439] RSP: 0018:ffffc90000d87a78 EFLAGS: 00010293 [ 57.879228][ T439] RAX: ffffffff82332db9 RBX: ffff888111c1b000 RCX: ffff8881116de400 [ 57.887215][ T439] RDX: 0000000000000000 RSI: 00000000fffffff4 RDI: 0000000000000000 [ 57.895198][ T439] RBP: ffffc90000d87b00 R08: 0000000000000015 R09: ffffffff84a000c5 [ 57.903196][ T439] R10: 0000000000000003 R11: 000000008ae260e1 R12: ffff888111c1b348 [ 57.911252][ T439] R13: ffff888111c1e000 R14: 00000000fffffff4 R15: ffff888111c1b068 [ 57.919267][ T439] FS: 0000555592d51500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 57.928234][ T439] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 57.934805][ T439] CR2: 0000001b33563fff CR3: 00000001109d0000 CR4: 00000000003506b0 [ 57.942895][ T439] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 57.950899][ T439] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 57.958911][ T439] Call Trace: [ 57.962211][ T439] device_add_disk_no_queue_reg+0x21/0x30 [ 57.968147][ T439] dm_create+0x992/0xdd0 [ 57.972379][ T439] dev_create+0x12e/0x2c0 [ 57.976748][ T439] ? list_devices+0x570/0x570 [ 57.981434][ T439] ? __kasan_check_write+0x14/0x20 [ 57.986587][ T439] ? _copy_from_user+0x95/0xd0 [ 57.991346][ T439] dm_ctl_ioctl+0x8ee/0xca0 [ 57.995857][ T439] ? list_devices+0x570/0x570 [ 58.000536][ T439] ? dm_poll+0x120/0x120 [ 58.004769][ T439] ? security_file_ioctl+0x84/0xa0 [ 58.009899][ T439] ? dm_poll+0x120/0x120 [ 58.014134][ T439] __se_sys_ioctl+0x121/0x1a0 [ 58.018833][ T439] __x64_sys_ioctl+0x7b/0x90 [ 58.023423][ T439] do_syscall_64+0x31/0x40 [ 58.027861][ T439] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 58.033774][ T439] RIP: 0033:0x7fa7decc71d9 [ 58.038203][ T439] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 58.057846][ T439] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 58.066405][ T439] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 58.074412][ T439] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 58.082581][ T439] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 58.090588][ T439] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 58.098567][ T439] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 58.106552][ T439] ---[ end trace f390c9bb75184862 ]--- [ 58.117253][ T441] FAULT_INJECTION: forcing a failure. [ 58.117253][ T441] name failslab, interval 1, probability 0, space 0, times 0 [ 58.129878][ T441] CPU: 0 PID: 441 Comm: syz.2.34 Tainted: G W syzkaller #0 [ 58.138352][ T441] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 58.148398][ T441] Call Trace: [ 58.151707][ T441] __dump_stack+0x21/0x24 [ 58.156024][ T441] dump_stack_lvl+0x1a7/0x208 [ 58.160684][ T441] ? show_regs_print_info+0x18/0x18 [ 58.165862][ T441] dump_stack+0x15/0x1c [ 58.170009][ T441] should_fail+0x3ab/0x500 [ 58.174403][ T441] ? device_add+0xb9/0xc00 [ 58.178800][ T441] __should_failslab+0xa4/0xe0 [ 58.183545][ T441] should_failslab+0x9/0x20 [ 58.188029][ T441] kmem_cache_alloc_trace+0x3a/0x2e0 [ 58.193290][ T441] device_add+0xb9/0xc00 [ 58.197528][ T441] ? kobject_set_name_vargs+0xca/0x110 [ 58.202963][ T441] device_create+0x26c/0x300 [ 58.207530][ T441] ? root_device_unregister+0x80/0x80 [ 58.212885][ T441] ? vsnprintf+0x189d/0x1990 [ 58.217453][ T441] bdi_register_va+0x90/0x5f0 [ 58.222106][ T441] bdi_register+0xdf/0x130 [ 58.226501][ T441] ? __kasan_check_write+0x14/0x20 [ 58.231590][ T441] ? _raw_spin_lock+0x94/0xf0 [ 58.236249][ T441] ? bdi_register_va+0x5f0/0x5f0 [ 58.241166][ T441] ? hashlen_string+0x55/0x120 [ 58.245907][ T441] ? blk_alloc_devt+0xda/0x330 [ 58.250651][ T441] __device_add_disk+0x538/0x1010 [ 58.255802][ T441] device_add_disk_no_queue_reg+0x21/0x30 [ 58.261514][ T441] dm_create+0x992/0xdd0 [ 58.265747][ T441] dev_create+0x12e/0x2c0 [ 58.270073][ T441] ? list_devices+0x570/0x570 [ 58.274732][ T441] ? __kasan_check_write+0x14/0x20 [ 58.279850][ T441] ? _copy_from_user+0x95/0xd0 [ 58.284594][ T441] dm_ctl_ioctl+0x8ee/0xca0 [ 58.289081][ T441] ? list_devices+0x570/0x570 [ 58.293753][ T441] ? dm_poll+0x120/0x120 [ 58.297983][ T441] ? security_file_ioctl+0x84/0xa0 [ 58.303087][ T441] ? dm_poll+0x120/0x120 [ 58.307327][ T441] __se_sys_ioctl+0x121/0x1a0 [ 58.312005][ T441] __x64_sys_ioctl+0x7b/0x90 [ 58.316578][ T441] do_syscall_64+0x31/0x40 [ 58.320981][ T441] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 58.326902][ T441] RIP: 0033:0x7fa7decc71d9 [ 58.331309][ T441] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 58.351455][ T441] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 58.359849][ T441] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 2026/10/11 13:03:07 executed programs: 19 [ 58.367798][ T441] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 58.375750][ T441] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 58.383700][ T441] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 58.391654][ T441] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 58.400949][ T441] ------------[ cut here ]------------ [ 58.406508][ T441] WARNING: CPU: 0 PID: 441 at block/genhd.c:821 __device_add_disk+0xcf9/0x1010 [ 58.415440][ T441] Modules linked in: [ 58.419333][ T441] CPU: 0 PID: 441 Comm: syz.2.34 Tainted: G W syzkaller #0 [ 58.427846][ T441] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 58.437919][ T441] RIP: 0010:__device_add_disk+0xcf9/0x1010 [ 58.443703][ T441] Code: ff e8 fb 8a 31 ff 0f 0b e9 74 fe ff ff e8 ef 8a 31 ff 0f 0b e9 64 f4 ff ff e8 e3 8a 31 ff 0f 0b e9 a4 f9 ff ff e8 d7 8a 31 ff <0f> 0b e9 52 f8 ff ff e8 cb 8a 31 ff e9 77 fd ff ff e8 c1 8a 31 ff [ 58.463330][ T441] RSP: 0018:ffffc90000f57a78 EFLAGS: 00010293 [ 58.469537][ T441] RAX: ffffffff82332db9 RBX: ffff888111c1f000 RCX: ffff8881116d8000 [ 58.477518][ T441] RDX: 0000000000000000 RSI: 00000000fffffff4 RDI: 0000000000000000 [ 58.485613][ T441] RBP: ffffc90000f57b00 R08: 0000000000000014 R09: ffffffff84a000c5 [ 58.493565][ T441] R10: 0000000000000001 R11: 000000009a0a5957 R12: ffff888111c1f348 [ 58.501560][ T441] R13: ffff888111c18000 R14: 00000000fffffff4 R15: ffff888111c1f068 [ 58.509569][ T441] FS: 0000555592d51500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 58.518518][ T441] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 58.525102][ T441] CR2: 0000001b33563fff CR3: 00000001103ef000 CR4: 00000000003506b0 [ 58.533099][ T441] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 58.541097][ T441] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 58.549089][ T441] Call Trace: [ 58.552377][ T441] device_add_disk_no_queue_reg+0x21/0x30 [ 58.558128][ T441] dm_create+0x992/0xdd0 [ 58.562369][ T441] dev_create+0x12e/0x2c0 [ 58.566713][ T441] ? list_devices+0x570/0x570 [ 58.571415][ T441] ? __kasan_check_write+0x14/0x20 [ 58.576552][ T441] ? _copy_from_user+0x95/0xd0 [ 58.581311][ T441] dm_ctl_ioctl+0x8ee/0xca0 [ 58.585818][ T441] ? list_devices+0x570/0x570 [ 58.590491][ T441] ? dm_poll+0x120/0x120 [ 58.594731][ T441] ? security_file_ioctl+0x84/0xa0 [ 58.599893][ T441] ? dm_poll+0x120/0x120 [ 58.604137][ T441] __se_sys_ioctl+0x121/0x1a0 [ 58.608826][ T441] __x64_sys_ioctl+0x7b/0x90 [ 58.613408][ T441] do_syscall_64+0x31/0x40 [ 58.617897][ T441] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 58.623794][ T441] RIP: 0033:0x7fa7decc71d9 [ 58.628220][ T441] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 58.647857][ T441] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 58.656305][ T441] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 58.664285][ T441] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 58.672326][ T441] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 58.680322][ T441] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 58.688305][ T441] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 58.696289][ T441] ---[ end trace f390c9bb75184863 ]--- [ 58.702870][ T385] udevd[385]: setting mode of /dev/dm-1 to 060660 failed: No such file or directory [ 58.712377][ T385] udevd[385]: setting owner of /dev/dm-1 to uid=0, gid=6 failed: No such file or directory [ 58.724906][ T443] FAULT_INJECTION: forcing a failure. [ 58.724906][ T443] name failslab, interval 1, probability 0, space 0, times 0 [ 58.737755][ T443] CPU: 1 PID: 443 Comm: syz.2.35 Tainted: G W syzkaller #0 [ 58.746238][ T443] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 58.756300][ T443] Call Trace: [ 58.759573][ T443] __dump_stack+0x21/0x24 [ 58.763877][ T443] dump_stack_lvl+0x1a7/0x208 [ 58.768534][ T443] ? show_regs_print_info+0x18/0x18 [ 58.773706][ T443] ? __x64_sys_ioctl+0x7b/0x90 [ 58.778448][ T443] dump_stack+0x15/0x1c [ 58.782582][ T443] should_fail+0x3ab/0x500 [ 58.786976][ T443] ? kvasprintf_const+0xd7/0x240 [ 58.791893][ T443] __should_failslab+0xa4/0xe0 [ 58.796654][ T443] should_failslab+0x9/0x20 [ 58.801134][ T443] __kmalloc_track_caller+0x5f/0x310 [ 58.806392][ T443] ? memset+0x35/0x40 [ 58.810350][ T443] kstrdup_const+0x55/0x90 [ 58.814744][ T443] kvasprintf_const+0xd7/0x240 [ 58.819507][ T443] kobject_set_name_vargs+0x61/0x110 [ 58.824783][ T443] device_create+0x240/0x300 [ 58.829353][ T443] ? root_device_unregister+0x80/0x80 [ 58.834702][ T443] ? vsnprintf+0x189d/0x1990 [ 58.839271][ T443] bdi_register_va+0x90/0x5f0 [ 58.843926][ T443] bdi_register+0xdf/0x130 [ 58.848331][ T443] ? __kasan_check_write+0x14/0x20 [ 58.853420][ T443] ? _raw_spin_lock+0x94/0xf0 [ 58.858075][ T443] ? bdi_register_va+0x5f0/0x5f0 [ 58.862989][ T443] ? hashlen_string+0x55/0x120 [ 58.867732][ T443] ? blk_alloc_devt+0xda/0x330 [ 58.872473][ T443] __device_add_disk+0x538/0x1010 [ 58.877477][ T443] device_add_disk_no_queue_reg+0x21/0x30 [ 58.883178][ T443] dm_create+0x992/0xdd0 [ 58.887401][ T443] dev_create+0x12e/0x2c0 [ 58.891715][ T443] ? list_devices+0x570/0x570 [ 58.896373][ T443] ? __kasan_check_write+0x14/0x20 [ 58.901485][ T443] ? _copy_from_user+0x95/0xd0 [ 58.906225][ T443] dm_ctl_ioctl+0x8ee/0xca0 [ 58.910723][ T443] ? list_devices+0x570/0x570 [ 58.915377][ T443] ? dm_poll+0x120/0x120 [ 58.919606][ T443] ? security_file_ioctl+0x84/0xa0 [ 58.924692][ T443] ? dm_poll+0x120/0x120 [ 58.928933][ T443] __se_sys_ioctl+0x121/0x1a0 [ 58.933588][ T443] __x64_sys_ioctl+0x7b/0x90 [ 58.938608][ T443] do_syscall_64+0x31/0x40 [ 58.943006][ T443] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 58.948878][ T443] RIP: 0033:0x7fa7decc71d9 [ 58.953277][ T443] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 58.972873][ T443] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 58.981272][ T443] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 58.989237][ T443] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 58.997195][ T443] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 59.005155][ T443] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 59.013112][ T443] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 59.022234][ T443] ------------[ cut here ]------------ [ 59.027788][ T443] WARNING: CPU: 1 PID: 443 at block/genhd.c:821 __device_add_disk+0xcf9/0x1010 [ 59.036736][ T443] Modules linked in: [ 59.040630][ T443] CPU: 1 PID: 443 Comm: syz.2.35 Tainted: G W syzkaller #0 [ 59.049182][ T443] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 59.059276][ T443] RIP: 0010:__device_add_disk+0xcf9/0x1010 [ 59.065081][ T443] Code: ff e8 fb 8a 31 ff 0f 0b e9 74 fe ff ff e8 ef 8a 31 ff 0f 0b e9 64 f4 ff ff e8 e3 8a 31 ff 0f 0b e9 a4 f9 ff ff e8 d7 8a 31 ff <0f> 0b e9 52 f8 ff ff e8 cb 8a 31 ff e9 77 fd ff ff e8 c1 8a 31 ff [ 59.084709][ T443] RSP: 0018:ffffc90002cf7a78 EFLAGS: 00010293 [ 59.090803][ T443] RAX: ffffffff82332db9 RBX: ffff888111bad000 RCX: ffff8881119d9400 [ 59.098786][ T443] RDX: 0000000000000000 RSI: 00000000fffffff4 RDI: 0000000000000000 [ 59.106845][ T443] RBP: ffffc90002cf7b00 R08: 0000000000000015 R09: ffffffff84a000c5 [ 59.114931][ T443] R10: 0000000000000003 R11: 000000008ae260e1 R12: ffff888111bad348 [ 59.122927][ T443] R13: ffff888111991000 R14: 00000000fffffff4 R15: ffff888111bad068 [ 59.130921][ T443] FS: 0000555592d51500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 59.139868][ T443] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.146460][ T443] CR2: 000011bf69363000 CR3: 0000000111094000 CR4: 00000000003506a0 [ 59.154417][ T443] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 59.162401][ T443] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 59.170383][ T443] Call Trace: [ 59.173683][ T443] device_add_disk_no_queue_reg+0x21/0x30 [ 59.179408][ T443] dm_create+0x992/0xdd0 [ 59.183641][ T443] dev_create+0x12e/0x2c0 [ 59.187979][ T443] ? list_devices+0x570/0x570 [ 59.192644][ T443] ? __kasan_check_write+0x14/0x20 [ 59.197825][ T443] ? _copy_from_user+0x95/0xd0 [ 59.202591][ T443] dm_ctl_ioctl+0x8ee/0xca0 [ 59.207110][ T443] ? list_devices+0x570/0x570 [ 59.211785][ T443] ? dm_poll+0x120/0x120 [ 59.216066][ T443] ? security_file_ioctl+0x84/0xa0 [ 59.221175][ T443] ? dm_poll+0x120/0x120 [ 59.225434][ T443] __se_sys_ioctl+0x121/0x1a0 [ 59.230108][ T443] __x64_sys_ioctl+0x7b/0x90 [ 59.234676][ T443] do_syscall_64+0x31/0x40 [ 59.239114][ T443] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 59.245122][ T443] RIP: 0033:0x7fa7decc71d9 [ 59.249566][ T443] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 59.269217][ T443] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 59.277649][ T443] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 59.285669][ T443] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 59.293627][ T443] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 59.301644][ T443] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 59.309637][ T443] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 59.317627][ T443] ---[ end trace f390c9bb75184864 ]--- [ 59.328426][ T445] FAULT_INJECTION: forcing a failure. [ 59.328426][ T445] name failslab, interval 1, probability 0, space 0, times 0 [ 59.341051][ T445] CPU: 0 PID: 445 Comm: syz.2.36 Tainted: G W syzkaller #0 [ 59.349526][ T445] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 59.359593][ T445] Call Trace: [ 59.362887][ T445] __dump_stack+0x21/0x24 [ 59.367205][ T445] dump_stack_lvl+0x1a7/0x208 [ 59.371867][ T445] ? show_regs_print_info+0x18/0x18 [ 59.377045][ T445] ? __x64_sys_ioctl+0x7b/0x90 [ 59.381813][ T445] dump_stack+0x15/0x1c [ 59.385947][ T445] should_fail+0x3ab/0x500 [ 59.390355][ T445] ? kvasprintf_const+0xd7/0x240 [ 59.396152][ T445] __should_failslab+0xa4/0xe0 [ 59.400900][ T445] should_failslab+0x9/0x20 [ 59.405384][ T445] __kmalloc_track_caller+0x5f/0x310 [ 59.410676][ T445] ? memset+0x35/0x40 [ 59.414637][ T445] kstrdup_const+0x55/0x90 [ 59.419032][ T445] kvasprintf_const+0xd7/0x240 [ 59.423775][ T445] kobject_set_name_vargs+0x61/0x110 [ 59.429058][ T445] device_create+0x240/0x300 [ 59.433722][ T445] ? root_device_unregister+0x80/0x80 [ 59.439219][ T445] ? vsnprintf+0x189d/0x1990 [ 59.443820][ T445] bdi_register_va+0x90/0x5f0 [ 59.448476][ T445] bdi_register+0xdf/0x130 [ 59.452872][ T445] ? __kasan_check_write+0x14/0x20 [ 59.457962][ T445] ? _raw_spin_lock+0x94/0xf0 [ 59.462614][ T445] ? bdi_register_va+0x5f0/0x5f0 [ 59.467549][ T445] ? hashlen_string+0x55/0x120 [ 59.472299][ T445] ? blk_alloc_devt+0xda/0x330 [ 59.477043][ T445] __device_add_disk+0x538/0x1010 [ 59.482052][ T445] device_add_disk_no_queue_reg+0x21/0x30 [ 59.487795][ T445] dm_create+0x992/0xdd0 [ 59.492014][ T445] dev_create+0x12e/0x2c0 [ 59.496323][ T445] ? list_devices+0x570/0x570 [ 59.500978][ T445] ? __kasan_check_write+0x14/0x20 [ 59.506065][ T445] ? _copy_from_user+0x95/0xd0 [ 59.510804][ T445] dm_ctl_ioctl+0x8ee/0xca0 [ 59.515287][ T445] ? list_devices+0x570/0x570 [ 59.519975][ T445] ? dm_poll+0x120/0x120 [ 59.524217][ T445] ? security_file_ioctl+0x84/0xa0 [ 59.529322][ T445] ? dm_poll+0x120/0x120 [ 59.533543][ T445] __se_sys_ioctl+0x121/0x1a0 [ 59.538211][ T445] __x64_sys_ioctl+0x7b/0x90 [ 59.542792][ T445] do_syscall_64+0x31/0x40 [ 59.547190][ T445] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 59.553059][ T445] RIP: 0033:0x7fa7decc71d9 [ 59.557452][ T445] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 59.577041][ T445] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 59.585435][ T445] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 59.593387][ T445] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 59.601340][ T445] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 59.609313][ T445] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 59.617281][ T445] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 59.626911][ T445] ------------[ cut here ]------------ [ 59.632389][ T445] WARNING: CPU: 0 PID: 445 at block/genhd.c:821 __device_add_disk+0xcf9/0x1010 [ 59.641460][ T445] Modules linked in: [ 59.645599][ T445] CPU: 0 PID: 445 Comm: syz.2.36 Tainted: G W syzkaller #0 [ 59.654094][ T445] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 59.664180][ T445] RIP: 0010:__device_add_disk+0xcf9/0x1010 [ 59.670002][ T445] Code: ff e8 fb 8a 31 ff 0f 0b e9 74 fe ff ff e8 ef 8a 31 ff 0f 0b e9 64 f4 ff ff e8 e3 8a 31 ff 0f 0b e9 a4 f9 ff ff e8 d7 8a 31 ff <0f> 0b e9 52 f8 ff ff e8 cb 8a 31 ff e9 77 fd ff ff e8 c1 8a 31 ff [ 59.689765][ T445] RSP: 0018:ffffc90000f57a78 EFLAGS: 00010293 [ 59.695855][ T445] RAX: ffffffff82332db9 RBX: ffff888110a96000 RCX: ffff888111a9d000 [ 59.703816][ T445] RDX: 0000000000000000 RSI: 00000000fffffff4 RDI: 0000000000000000 [ 59.711804][ T445] RBP: ffffc90000f57b00 R08: 0000000000000015 R09: ffffffff84a000c5 [ 59.719918][ T445] R10: 0000000000000003 R11: 000000008ae260e1 R12: ffff888110a96348 [ 59.727905][ T445] R13: ffff888110a94000 R14: 00000000fffffff4 R15: ffff888110a96068 [ 59.735896][ T445] FS: 0000555592d51500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 59.744807][ T445] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.751423][ T445] CR2: 0000001b33563fff CR3: 0000000124b2e000 CR4: 00000000003506b0 [ 59.759436][ T445] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 59.767475][ T445] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 59.775478][ T445] Call Trace: [ 59.778759][ T445] device_add_disk_no_queue_reg+0x21/0x30 [ 59.784461][ T445] dm_create+0x992/0xdd0 [ 59.788726][ T445] dev_create+0x12e/0x2c0 [ 59.793096][ T445] ? list_devices+0x570/0x570 [ 59.797801][ T445] ? __kasan_check_write+0x14/0x20 [ 59.802903][ T445] ? _copy_from_user+0x95/0xd0 [ 59.807682][ T445] dm_ctl_ioctl+0x8ee/0xca0 [ 59.812184][ T445] ? list_devices+0x570/0x570 [ 59.816872][ T445] ? dm_poll+0x120/0x120 [ 59.821117][ T445] ? security_file_ioctl+0x84/0xa0 [ 59.826235][ T445] ? dm_poll+0x120/0x120 [ 59.830470][ T445] __se_sys_ioctl+0x121/0x1a0 [ 59.835125][ T445] __x64_sys_ioctl+0x7b/0x90 [ 59.839745][ T445] do_syscall_64+0x31/0x40 [ 59.844163][ T445] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 59.850069][ T445] RIP: 0033:0x7fa7decc71d9 [ 59.854473][ T445] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 59.874094][ T445] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 59.882543][ T445] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 59.890535][ T445] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 59.898557][ T445] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 59.906587][ T445] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 59.914549][ T445] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 59.922549][ T445] ---[ end trace f390c9bb75184865 ]--- [ 59.932851][ T447] FAULT_INJECTION: forcing a failure. [ 59.932851][ T447] name failslab, interval 1, probability 0, space 0, times 0 [ 59.945470][ T447] CPU: 1 PID: 447 Comm: syz.2.37 Tainted: G W syzkaller #0 [ 59.953945][ T447] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 59.964001][ T447] Call Trace: [ 59.967360][ T447] __dump_stack+0x21/0x24 [ 59.971666][ T447] dump_stack_lvl+0x1a7/0x208 [ 59.976325][ T447] ? show_regs_print_info+0x18/0x18 [ 59.981505][ T447] dump_stack+0x15/0x1c [ 59.985638][ T447] should_fail+0x3ab/0x500 [ 59.990035][ T447] ? device_add+0xb9/0xc00 [ 59.994433][ T447] __should_failslab+0xa4/0xe0 [ 59.999180][ T447] should_failslab+0x9/0x20 [ 60.003665][ T447] kmem_cache_alloc_trace+0x3a/0x2e0 [ 60.008929][ T447] device_add+0xb9/0xc00 [ 60.013149][ T447] ? kobject_set_name_vargs+0xca/0x110 [ 60.018608][ T447] device_create+0x26c/0x300 [ 60.023190][ T447] ? root_device_unregister+0x80/0x80 [ 60.028543][ T447] ? vsnprintf+0x189d/0x1990 [ 60.033113][ T447] bdi_register_va+0x90/0x5f0 [ 60.037794][ T447] bdi_register+0xdf/0x130 [ 60.042190][ T447] ? __kasan_check_write+0x14/0x20 [ 60.047320][ T447] ? _raw_spin_lock+0x94/0xf0 [ 60.051976][ T447] ? bdi_register_va+0x5f0/0x5f0 [ 60.056891][ T447] ? hashlen_string+0x55/0x120 [ 60.061634][ T447] ? blk_alloc_devt+0xda/0x330 [ 60.066378][ T447] __device_add_disk+0x538/0x1010 [ 60.071384][ T447] device_add_disk_no_queue_reg+0x21/0x30 [ 60.077084][ T447] dm_create+0x992/0xdd0 [ 60.081303][ T447] dev_create+0x12e/0x2c0 [ 60.085609][ T447] ? list_devices+0x570/0x570 [ 60.090287][ T447] ? __kasan_check_write+0x14/0x20 [ 60.095373][ T447] ? _copy_from_user+0x95/0xd0 [ 60.100116][ T447] dm_ctl_ioctl+0x8ee/0xca0 [ 60.104618][ T447] ? list_devices+0x570/0x570 [ 60.109275][ T447] ? dm_poll+0x120/0x120 [ 60.113502][ T447] ? security_file_ioctl+0x84/0xa0 [ 60.118593][ T447] ? dm_poll+0x120/0x120 [ 60.122816][ T447] __se_sys_ioctl+0x121/0x1a0 [ 60.127473][ T447] __x64_sys_ioctl+0x7b/0x90 [ 60.132044][ T447] do_syscall_64+0x31/0x40 [ 60.136445][ T447] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 60.142319][ T447] RIP: 0033:0x7fa7decc71d9 [ 60.146731][ T447] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 60.166324][ T447] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 60.174721][ T447] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 60.182803][ T447] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 60.190846][ T447] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 60.198807][ T447] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 60.206762][ T447] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 60.216177][ T447] ------------[ cut here ]------------ [ 60.221680][ T447] WARNING: CPU: 1 PID: 447 at block/genhd.c:821 __device_add_disk+0xcf9/0x1010 [ 60.230624][ T447] Modules linked in: [ 60.234520][ T447] CPU: 1 PID: 447 Comm: syz.2.37 Tainted: G W syzkaller #0 [ 60.243174][ T447] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 60.253285][ T447] RIP: 0010:__device_add_disk+0xcf9/0x1010 [ 60.259097][ T447] Code: ff e8 fb 8a 31 ff 0f 0b e9 74 fe ff ff e8 ef 8a 31 ff 0f 0b e9 64 f4 ff ff e8 e3 8a 31 ff 0f 0b e9 a4 f9 ff ff e8 d7 8a 31 ff <0f> 0b e9 52 f8 ff ff e8 cb 8a 31 ff e9 77 fd ff ff e8 c1 8a 31 ff [ 60.278745][ T447] RSP: 0018:ffffc90002cf7a78 EFLAGS: 00010293 [ 60.284803][ T447] RAX: ffffffff82332db9 RBX: ffff888111bae000 RCX: ffff8881119de400 [ 60.292807][ T447] RDX: 0000000000000000 RSI: 00000000fffffff4 RDI: 0000000000000000 [ 60.300829][ T447] RBP: ffffc90002cf7b00 R08: 0000000000000014 R09: ffffffff84a000c5 [ 60.308820][ T447] R10: 0000000000000001 R11: 000000009a0a5957 R12: ffff888111bae348 [ 60.316835][ T447] R13: ffff888111bac000 R14: 00000000fffffff4 R15: ffff888111bae068 [ 60.324822][ T447] FS: 0000555592d51500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 60.333818][ T447] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.340417][ T447] CR2: 000011bf692d9000 CR3: 0000000111598000 CR4: 00000000003506a0 [ 60.348473][ T447] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 60.356473][ T447] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 60.364480][ T447] Call Trace: [ 60.367790][ T447] device_add_disk_no_queue_reg+0x21/0x30 [ 60.373511][ T447] dm_create+0x992/0xdd0 [ 60.377766][ T447] dev_create+0x12e/0x2c0 [ 60.382117][ T447] ? list_devices+0x570/0x570 [ 60.386829][ T447] ? __kasan_check_write+0x14/0x20 [ 60.391950][ T447] ? _copy_from_user+0x95/0xd0 [ 60.396730][ T447] dm_ctl_ioctl+0x8ee/0xca0 [ 60.401226][ T447] ? list_devices+0x570/0x570 [ 60.405938][ T447] ? dm_poll+0x120/0x120 [ 60.410179][ T447] ? security_file_ioctl+0x84/0xa0 [ 60.415318][ T447] ? dm_poll+0x120/0x120 [ 60.419562][ T447] __se_sys_ioctl+0x121/0x1a0 [ 60.424218][ T447] __x64_sys_ioctl+0x7b/0x90 [ 60.428826][ T447] do_syscall_64+0x31/0x40 [ 60.433241][ T447] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 60.439163][ T447] RIP: 0033:0x7fa7decc71d9 [ 60.443583][ T447] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 60.463211][ T447] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 60.471658][ T447] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 60.479642][ T447] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 60.487628][ T447] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 60.495606][ T447] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 60.503571][ T447] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 60.511578][ T447] ---[ end trace f390c9bb75184866 ]--- [ 60.522433][ T449] FAULT_INJECTION: forcing a failure. [ 60.522433][ T449] name failslab, interval 1, probability 0, space 0, times 0 [ 60.535098][ T449] CPU: 0 PID: 449 Comm: syz.2.38 Tainted: G W syzkaller #0 [ 60.543575][ T449] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 60.553608][ T449] Call Trace: [ 60.556880][ T449] __dump_stack+0x21/0x24 [ 60.561205][ T449] dump_stack_lvl+0x1a7/0x208 [ 60.565867][ T449] ? show_regs_print_info+0x18/0x18 [ 60.571057][ T449] ? __x64_sys_ioctl+0x7b/0x90 [ 60.575824][ T449] dump_stack+0x15/0x1c [ 60.579960][ T449] should_fail+0x3ab/0x500 [ 60.584356][ T449] ? kvasprintf_const+0xd7/0x240 [ 60.589276][ T449] __should_failslab+0xa4/0xe0 [ 60.594026][ T449] should_failslab+0x9/0x20 [ 60.598508][ T449] __kmalloc_track_caller+0x5f/0x310 [ 60.603770][ T449] ? memset+0x35/0x40 [ 60.607753][ T449] kstrdup_const+0x55/0x90 [ 60.612166][ T449] kvasprintf_const+0xd7/0x240 [ 60.616928][ T449] kobject_set_name_vargs+0x61/0x110 [ 60.622196][ T449] device_create+0x240/0x300 [ 60.626766][ T449] ? root_device_unregister+0x80/0x80 [ 60.632113][ T449] ? vsnprintf+0x189d/0x1990 [ 60.636700][ T449] bdi_register_va+0x90/0x5f0 [ 60.641355][ T449] bdi_register+0xdf/0x130 [ 60.645765][ T449] ? __kasan_check_write+0x14/0x20 [ 60.650860][ T449] ? _raw_spin_lock+0x94/0xf0 [ 60.655532][ T449] ? bdi_register_va+0x5f0/0x5f0 [ 60.660453][ T449] ? hashlen_string+0x55/0x120 [ 60.665195][ T449] ? blk_alloc_devt+0xda/0x330 [ 60.669939][ T449] __device_add_disk+0x538/0x1010 [ 60.675044][ T449] device_add_disk_no_queue_reg+0x21/0x30 [ 60.680886][ T449] dm_create+0x992/0xdd0 [ 60.685130][ T449] dev_create+0x12e/0x2c0 [ 60.689454][ T449] ? list_devices+0x570/0x570 [ 60.694117][ T449] ? __kasan_check_write+0x14/0x20 [ 60.699231][ T449] ? _copy_from_user+0x95/0xd0 [ 60.703976][ T449] dm_ctl_ioctl+0x8ee/0xca0 [ 60.708461][ T449] ? list_devices+0x570/0x570 [ 60.713143][ T449] ? dm_poll+0x120/0x120 [ 60.717376][ T449] ? security_file_ioctl+0x84/0xa0 [ 60.722470][ T449] ? dm_poll+0x120/0x120 [ 60.726699][ T449] __se_sys_ioctl+0x121/0x1a0 [ 60.731359][ T449] __x64_sys_ioctl+0x7b/0x90 [ 60.735929][ T449] do_syscall_64+0x31/0x40 [ 60.740326][ T449] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 60.746197][ T449] RIP: 0033:0x7fa7decc71d9 [ 60.750612][ T449] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 60.770201][ T449] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 60.778601][ T449] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 60.786557][ T449] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 60.794514][ T449] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 60.802502][ T449] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 60.810459][ T449] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 60.820239][ T449] ------------[ cut here ]------------ [ 60.825754][ T449] WARNING: CPU: 0 PID: 449 at block/genhd.c:821 __device_add_disk+0xcf9/0x1010 [ 60.834673][ T449] Modules linked in: [ 60.838590][ T449] CPU: 0 PID: 449 Comm: syz.2.38 Tainted: G W syzkaller #0 [ 60.847114][ T449] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 60.857199][ T449] RIP: 0010:__device_add_disk+0xcf9/0x1010 [ 60.863005][ T449] Code: ff e8 fb 8a 31 ff 0f 0b e9 74 fe ff ff e8 ef 8a 31 ff 0f 0b e9 64 f4 ff ff e8 e3 8a 31 ff 0f 0b e9 a4 f9 ff ff e8 d7 8a 31 ff <0f> 0b e9 52 f8 ff ff e8 cb 8a 31 ff e9 77 fd ff ff e8 c1 8a 31 ff [ 60.882770][ T449] RSP: 0018:ffffc90000f57a78 EFLAGS: 00010293 [ 60.888968][ T449] RAX: ffffffff82332db9 RBX: ffff888111e4c000 RCX: ffff888111a9a800 [ 60.897111][ T449] RDX: 0000000000000000 RSI: 00000000fffffff4 RDI: 0000000000000000 [ 60.905072][ T449] RBP: ffffc90000f57b00 R08: 0000000000000015 R09: ffffffff84a000c5 [ 60.913058][ T449] R10: 0000000000000003 R11: 000000008ae260e1 R12: ffff888111e4c348 [ 60.921042][ T449] R13: ffff888110a97000 R14: 00000000fffffff4 R15: ffff888111e4c068 [ 60.929653][ T449] FS: 0000555592d51500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 60.938602][ T449] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.945193][ T449] CR2: 0000001b33563fff CR3: 000000010f374000 CR4: 00000000003506b0 [ 60.953184][ T449] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 60.961174][ T449] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 60.969160][ T449] Call Trace: [ 60.972446][ T449] device_add_disk_no_queue_reg+0x21/0x30 [ 60.978190][ T449] dm_create+0x992/0xdd0 [ 60.982457][ T449] dev_create+0x12e/0x2c0 [ 60.986791][ T449] ? list_devices+0x570/0x570 [ 60.991465][ T449] ? __kasan_check_write+0x14/0x20 [ 60.996594][ T449] ? _copy_from_user+0x95/0xd0 [ 61.001463][ T449] dm_ctl_ioctl+0x8ee/0xca0 [ 61.006007][ T449] ? list_devices+0x570/0x570 [ 61.010698][ T449] ? dm_poll+0x120/0x120 [ 61.014925][ T449] ? security_file_ioctl+0x84/0xa0 [ 61.020066][ T449] ? dm_poll+0x120/0x120 [ 61.024304][ T449] __se_sys_ioctl+0x121/0x1a0 [ 61.029020][ T449] __x64_sys_ioctl+0x7b/0x90 [ 61.033608][ T449] do_syscall_64+0x31/0x40 [ 61.038054][ T449] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 61.043956][ T449] RIP: 0033:0x7fa7decc71d9 [ 61.048416][ T449] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 61.068213][ T449] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 61.076640][ T449] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 61.084606][ T449] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 61.092587][ T449] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 61.100571][ T449] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 61.108572][ T449] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 61.116561][ T449] ---[ end trace f390c9bb75184867 ]--- [ 61.127128][ T451] FAULT_INJECTION: forcing a failure. [ 61.127128][ T451] name failslab, interval 1, probability 0, space 0, times 0 [ 61.139758][ T451] CPU: 1 PID: 451 Comm: syz.2.39 Tainted: G W syzkaller #0 [ 61.148232][ T451] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 61.158269][ T451] Call Trace: [ 61.161554][ T451] __dump_stack+0x21/0x24 [ 61.165861][ T451] dump_stack_lvl+0x1a7/0x208 [ 61.170532][ T451] ? show_regs_print_info+0x18/0x18 [ 61.175733][ T451] dump_stack+0x15/0x1c [ 61.179870][ T451] should_fail+0x3ab/0x500 [ 61.184266][ T451] ? device_add+0xb9/0xc00 [ 61.188661][ T451] __should_failslab+0xa4/0xe0 [ 61.193405][ T451] should_failslab+0x9/0x20 [ 61.197889][ T451] kmem_cache_alloc_trace+0x3a/0x2e0 [ 61.203153][ T451] device_add+0xb9/0xc00 [ 61.207374][ T451] ? kobject_set_name_vargs+0xca/0x110 [ 61.212811][ T451] device_create+0x26c/0x300 [ 61.217383][ T451] ? root_device_unregister+0x80/0x80 [ 61.222734][ T451] ? vsnprintf+0x189d/0x1990 [ 61.227305][ T451] bdi_register_va+0x90/0x5f0 [ 61.231957][ T451] bdi_register+0xdf/0x130 [ 61.236354][ T451] ? __kasan_check_write+0x14/0x20 [ 61.241441][ T451] ? _raw_spin_lock+0x94/0xf0 [ 61.246223][ T451] ? bdi_register_va+0x5f0/0x5f0 [ 61.251141][ T451] ? hashlen_string+0x55/0x120 [ 61.255902][ T451] ? blk_alloc_devt+0xda/0x330 [ 61.260647][ T451] __device_add_disk+0x538/0x1010 [ 61.265648][ T451] device_add_disk_no_queue_reg+0x21/0x30 [ 61.271353][ T451] dm_create+0x992/0xdd0 [ 61.275574][ T451] dev_create+0x12e/0x2c0 [ 61.279880][ T451] ? list_devices+0x570/0x570 [ 61.284555][ T451] ? __kasan_check_write+0x14/0x20 [ 61.289645][ T451] ? _copy_from_user+0x95/0xd0 [ 61.294403][ T451] dm_ctl_ioctl+0x8ee/0xca0 [ 61.298898][ T451] ? list_devices+0x570/0x570 [ 61.303579][ T451] ? dm_poll+0x120/0x120 [ 61.307807][ T451] ? security_file_ioctl+0x84/0xa0 [ 61.312898][ T451] ? dm_poll+0x120/0x120 [ 61.317120][ T451] __se_sys_ioctl+0x121/0x1a0 [ 61.321783][ T451] __x64_sys_ioctl+0x7b/0x90 [ 61.326356][ T451] do_syscall_64+0x31/0x40 [ 61.330767][ T451] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 61.336637][ T451] RIP: 0033:0x7fa7decc71d9 [ 61.341032][ T451] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 61.360843][ T451] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 61.369235][ T451] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 61.377193][ T451] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 61.385151][ T451] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 61.393104][ T451] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 61.401073][ T451] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 61.410251][ T451] ------------[ cut here ]------------ [ 61.415754][ T451] WARNING: CPU: 1 PID: 451 at block/genhd.c:821 __device_add_disk+0xcf9/0x1010 [ 61.424659][ T451] Modules linked in: [ 61.428762][ T451] CPU: 0 PID: 451 Comm: syz.2.39 Tainted: G W syzkaller #0 [ 61.437675][ T451] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 61.447782][ T451] RIP: 0010:__device_add_disk+0xcf9/0x1010 [ 61.453583][ T451] Code: ff e8 fb 8a 31 ff 0f 0b e9 74 fe ff ff e8 ef 8a 31 ff 0f 0b e9 64 f4 ff ff e8 e3 8a 31 ff 0f 0b e9 a4 f9 ff ff e8 d7 8a 31 ff <0f> 0b e9 52 f8 ff ff e8 cb 8a 31 ff e9 77 fd ff ff e8 c1 8a 31 ff [ 61.473229][ T451] RSP: 0018:ffffc90002cf7a78 EFLAGS: 00010293 [ 61.479330][ T451] RAX: ffffffff82332db9 RBX: ffff888111eca000 RCX: ffff888111d5e400 [ 61.487313][ T451] RDX: 0000000000000000 RSI: 00000000fffffff4 RDI: 0000000000000000 [ 61.495298][ T451] RBP: ffffc90002cf7b00 R08: 0000000000000014 R09: ffffffff84a000c5 [ 61.503255][ T451] R10: 0000000000000001 R11: 000000009a0a5957 R12: ffff888111eca348 [ 61.511245][ T451] R13: ffff888111ecf000 R14: 00000000fffffff4 R15: ffff888111eca068 [ 61.519228][ T451] FS: 0000555592d51500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 61.528164][ T451] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 61.534740][ T451] CR2: 00007fa7dfa81060 CR3: 000000010ef60000 CR4: 00000000003506b0 [ 61.542732][ T451] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 61.550714][ T451] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 61.558688][ T451] Call Trace: [ 61.561992][ T451] device_add_disk_no_queue_reg+0x21/0x30 [ 61.567738][ T451] dm_create+0x992/0xdd0 [ 61.571978][ T451] dev_create+0x12e/0x2c0 [ 61.576339][ T451] ? list_devices+0x570/0x570 [ 61.581019][ T451] ? __kasan_check_write+0x14/0x20 [ 61.586203][ T451] ? _copy_from_user+0x95/0xd0 [ 61.590984][ T451] dm_ctl_ioctl+0x8ee/0xca0 [ 61.595497][ T451] ? list_devices+0x570/0x570 [ 61.600191][ T451] ? dm_poll+0x120/0x120 [ 61.604417][ T451] ? security_file_ioctl+0x84/0xa0 [ 61.609532][ T451] ? dm_poll+0x120/0x120 [ 61.613772][ T451] __se_sys_ioctl+0x121/0x1a0 [ 61.618463][ T451] __x64_sys_ioctl+0x7b/0x90 [ 61.623047][ T451] do_syscall_64+0x31/0x40 [ 61.627485][ T451] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 61.633373][ T451] RIP: 0033:0x7fa7decc71d9 [ 61.637808][ T451] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 61.657431][ T451] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 61.665875][ T451] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 61.673841][ T451] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 61.681826][ T451] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 61.689820][ T451] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 61.697835][ T451] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 61.705915][ T451] ---[ end trace f390c9bb75184868 ]--- [ 61.717913][ T453] FAULT_INJECTION: forcing a failure. [ 61.717913][ T453] name failslab, interval 1, probability 0, space 0, times 0 [ 61.730541][ T453] CPU: 1 PID: 453 Comm: syz.2.40 Tainted: G W syzkaller #0 [ 61.739047][ T453] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 61.749082][ T453] Call Trace: [ 61.752359][ T453] __dump_stack+0x21/0x24 [ 61.756670][ T453] dump_stack_lvl+0x1a7/0x208 [ 61.761327][ T453] ? show_regs_print_info+0x18/0x18 [ 61.766504][ T453] ? __x64_sys_ioctl+0x7b/0x90 [ 61.771245][ T453] dump_stack+0x15/0x1c [ 61.775381][ T453] should_fail+0x3ab/0x500 [ 61.779802][ T453] ? kvasprintf_const+0xd7/0x240 [ 61.784718][ T453] __should_failslab+0xa4/0xe0 [ 61.789460][ T453] should_failslab+0x9/0x20 [ 61.793953][ T453] __kmalloc_track_caller+0x5f/0x310 [ 61.799247][ T453] ? memset+0x35/0x40 [ 61.803209][ T453] kstrdup_const+0x55/0x90 [ 61.807602][ T453] kvasprintf_const+0xd7/0x240 [ 61.812345][ T453] kobject_set_name_vargs+0x61/0x110 [ 61.817608][ T453] device_create+0x240/0x300 [ 61.822194][ T453] ? root_device_unregister+0x80/0x80 [ 61.827550][ T453] ? vsnprintf+0x189d/0x1990 [ 61.832145][ T453] bdi_register_va+0x90/0x5f0 [ 61.836818][ T453] bdi_register+0xdf/0x130 [ 61.841217][ T453] ? __kasan_check_write+0x14/0x20 [ 61.846306][ T453] ? _raw_spin_lock+0x94/0xf0 [ 61.850968][ T453] ? bdi_register_va+0x5f0/0x5f0 [ 61.856101][ T453] ? hashlen_string+0x55/0x120 [ 61.860841][ T453] ? blk_alloc_devt+0xda/0x330 [ 61.865581][ T453] __device_add_disk+0x538/0x1010 [ 61.870672][ T453] device_add_disk_no_queue_reg+0x21/0x30 [ 61.876366][ T453] dm_create+0x992/0xdd0 [ 61.880584][ T453] dev_create+0x12e/0x2c0 [ 61.884898][ T453] ? list_devices+0x570/0x570 [ 61.889556][ T453] ? __kasan_check_write+0x14/0x20 [ 61.894642][ T453] ? _copy_from_user+0x95/0xd0 [ 61.899385][ T453] dm_ctl_ioctl+0x8ee/0xca0 [ 61.903873][ T453] ? list_devices+0x570/0x570 [ 61.908524][ T453] ? dm_poll+0x120/0x120 [ 61.912754][ T453] ? security_file_ioctl+0x84/0xa0 [ 61.917843][ T453] ? dm_poll+0x120/0x120 [ 61.922063][ T453] __se_sys_ioctl+0x121/0x1a0 [ 61.926726][ T453] __x64_sys_ioctl+0x7b/0x90 [ 61.931295][ T453] do_syscall_64+0x31/0x40 [ 61.935689][ T453] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 61.941556][ T453] RIP: 0033:0x7fa7decc71d9 [ 61.945957][ T453] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 61.965548][ T453] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 61.973951][ T453] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 61.981993][ T453] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 61.989953][ T453] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 61.997910][ T453] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 62.005874][ T453] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 62.014503][ T453] ------------[ cut here ]------------ [ 62.020032][ T453] WARNING: CPU: 1 PID: 453 at block/genhd.c:821 __device_add_disk+0xcf9/0x1010 [ 62.029061][ T453] Modules linked in: [ 62.032958][ T453] CPU: 1 PID: 453 Comm: syz.2.40 Tainted: G W syzkaller #0 [ 62.041459][ T453] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 62.051539][ T453] RIP: 0010:__device_add_disk+0xcf9/0x1010 [ 62.057350][ T453] Code: ff e8 fb 8a 31 ff 0f 0b e9 74 fe ff ff e8 ef 8a 31 ff 0f 0b e9 64 f4 ff ff e8 e3 8a 31 ff 0f 0b e9 a4 f9 ff ff e8 d7 8a 31 ff <0f> 0b e9 52 f8 ff ff e8 cb 8a 31 ff e9 77 fd ff ff e8 c1 8a 31 ff [ 62.077469][ T453] RSP: 0018:ffffc90000f77a78 EFLAGS: 00010293 [ 62.083557][ T453] RAX: ffffffff82332db9 RBX: ffff888111fd8000 RCX: ffff888111d58000 [ 62.092300][ T453] RDX: 0000000000000000 RSI: 00000000fffffff4 RDI: 0000000000000000 [ 62.100292][ T453] RBP: ffffc90000f77b00 R08: 0000000000000015 R09: ffffffff84a000c5 [ 62.108365][ T453] R10: 0000000000000003 R11: 000000008ae260e1 R12: ffff888111fd8348 [ 62.116646][ T453] R13: ffff888111ecb000 R14: 00000000fffffff4 R15: ffff888111fd8068 [ 62.124715][ T453] FS: 0000555592d51500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 62.133671][ T453] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.140547][ T453] CR2: 0000001b33563fff CR3: 000000010fe7e000 CR4: 00000000003506a0 [ 62.148579][ T453] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 62.156566][ T453] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 62.164522][ T453] Call Trace: [ 62.167827][ T453] device_add_disk_no_queue_reg+0x21/0x30 [ 62.173635][ T453] dm_create+0x992/0xdd0 [ 62.178094][ T453] dev_create+0x12e/0x2c0 [ 62.182422][ T453] ? list_devices+0x570/0x570 [ 62.187139][ T453] ? __kasan_check_write+0x14/0x20 [ 62.192279][ T453] ? _copy_from_user+0x95/0xd0 [ 62.197071][ T453] dm_ctl_ioctl+0x8ee/0xca0 [ 62.201571][ T453] ? list_devices+0x570/0x570 [ 62.206258][ T453] ? dm_poll+0x120/0x120 [ 62.210502][ T453] ? security_file_ioctl+0x84/0xa0 [ 62.215621][ T453] ? dm_poll+0x120/0x120 [ 62.219859][ T453] __se_sys_ioctl+0x121/0x1a0 [ 62.224515][ T453] __x64_sys_ioctl+0x7b/0x90 [ 62.229140][ T453] do_syscall_64+0x31/0x40 [ 62.233553][ T453] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 62.239500][ T453] RIP: 0033:0x7fa7decc71d9 [ 62.243904][ T453] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 62.263614][ T453] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 62.272049][ T453] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 62.280026][ T453] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 62.288009][ T453] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 62.295983][ T453] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 62.303947][ T453] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 62.311953][ T453] ---[ end trace f390c9bb75184869 ]--- [ 62.322372][ T455] FAULT_INJECTION: forcing a failure. [ 62.322372][ T455] name failslab, interval 1, probability 0, space 0, times 0 [ 62.334995][ T455] CPU: 0 PID: 455 Comm: syz.2.41 Tainted: G W syzkaller #0 [ 62.344269][ T455] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 62.354314][ T455] Call Trace: [ 62.357592][ T455] __dump_stack+0x21/0x24 [ 62.361911][ T455] dump_stack_lvl+0x1a7/0x208 [ 62.366577][ T455] ? show_regs_print_info+0x18/0x18 [ 62.371790][ T455] ? __x64_sys_ioctl+0x7b/0x90 [ 62.376561][ T455] dump_stack+0x15/0x1c [ 62.380696][ T455] should_fail+0x3ab/0x500 [ 62.385093][ T455] ? kvasprintf_const+0xd7/0x240 [ 62.390010][ T455] __should_failslab+0xa4/0xe0 [ 62.394755][ T455] should_failslab+0x9/0x20 [ 62.399252][ T455] __kmalloc_track_caller+0x5f/0x310 [ 62.404540][ T455] ? memset+0x35/0x40 [ 62.408506][ T455] kstrdup_const+0x55/0x90 [ 62.412921][ T455] kvasprintf_const+0xd7/0x240 [ 62.417673][ T455] kobject_set_name_vargs+0x61/0x110 [ 62.422941][ T455] device_create+0x240/0x300 [ 62.427519][ T455] ? root_device_unregister+0x80/0x80 [ 62.432868][ T455] ? vsnprintf+0x189d/0x1990 [ 62.437456][ T455] bdi_register_va+0x90/0x5f0 [ 62.442134][ T455] bdi_register+0xdf/0x130 [ 62.446537][ T455] ? __kasan_check_write+0x14/0x20 [ 62.451625][ T455] ? _raw_spin_lock+0x94/0xf0 [ 62.456295][ T455] ? bdi_register_va+0x5f0/0x5f0 [ 62.461210][ T455] ? hashlen_string+0x55/0x120 [ 62.465981][ T455] ? blk_alloc_devt+0xda/0x330 [ 62.470721][ T455] __device_add_disk+0x538/0x1010 [ 62.475743][ T455] device_add_disk_no_queue_reg+0x21/0x30 [ 62.481442][ T455] dm_create+0x992/0xdd0 [ 62.485662][ T455] dev_create+0x12e/0x2c0 [ 62.489968][ T455] ? list_devices+0x570/0x570 [ 62.494641][ T455] ? __kasan_check_write+0x14/0x20 [ 62.499729][ T455] ? _copy_from_user+0x95/0xd0 [ 62.504556][ T455] dm_ctl_ioctl+0x8ee/0xca0 [ 62.509038][ T455] ? list_devices+0x570/0x570 [ 62.513691][ T455] ? dm_poll+0x120/0x120 [ 62.518013][ T455] ? security_file_ioctl+0x84/0xa0 [ 62.523108][ T455] ? dm_poll+0x120/0x120 [ 62.527331][ T455] __se_sys_ioctl+0x121/0x1a0 [ 62.533044][ T455] __x64_sys_ioctl+0x7b/0x90 [ 62.537641][ T455] do_syscall_64+0x31/0x40 [ 62.542067][ T455] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 62.547943][ T455] RIP: 0033:0x7fa7decc71d9 [ 62.552336][ T455] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 62.571922][ T455] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 62.580318][ T455] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 62.588286][ T455] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 62.596237][ T455] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 62.604202][ T455] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 62.612153][ T455] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 62.620645][ T455] ------------[ cut here ]------------ [ 62.626207][ T455] WARNING: CPU: 1 PID: 455 at block/genhd.c:821 __device_add_disk+0xcf9/0x1010 [ 62.635133][ T455] Modules linked in: [ 62.639245][ T455] CPU: 0 PID: 455 Comm: syz.2.41 Tainted: G W syzkaller #0 [ 62.647784][ T455] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 62.657959][ T455] RIP: 0010:__device_add_disk+0xcf9/0x1010 [ 62.663753][ T455] Code: ff e8 fb 8a 31 ff 0f 0b e9 74 fe ff ff e8 ef 8a 31 ff 0f 0b e9 64 f4 ff ff e8 e3 8a 31 ff 0f 0b e9 a4 f9 ff ff e8 d7 8a 31 ff <0f> 0b e9 52 f8 ff ff e8 cb 8a 31 ff e9 77 fd ff ff e8 c1 8a 31 ff [ 62.683418][ T455] RSP: 0018:ffffc90000f57a78 EFLAGS: 00010293 [ 62.689516][ T455] RAX: ffffffff82332db9 RBX: ffff88811208c000 RCX: ffff888111a9bc00 [ 62.697502][ T455] RDX: 0000000000000000 RSI: 00000000fffffff4 RDI: 0000000000000000 [ 62.705733][ T455] RBP: ffffc90000f57b00 R08: 0000000000000015 R09: ffffffff84a000c5 [ 62.713699][ T455] R10: 0000000000000003 R11: 000000008ae260e1 R12: ffff88811208c348 [ 62.721788][ T455] R13: ffff888111e4a000 R14: 00000000fffffff4 R15: ffff88811208c068 [ 62.729785][ T455] FS: 0000555592d51500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 62.738727][ T455] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.745323][ T455] CR2: 0000001b33563fff CR3: 00000001113ac000 CR4: 00000000003506b0 [ 62.753299][ T455] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 62.761279][ T455] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 62.769262][ T455] Call Trace: [ 62.772542][ T455] device_add_disk_no_queue_reg+0x21/0x30 [ 62.778281][ T455] dm_create+0x992/0xdd0 [ 62.782523][ T455] dev_create+0x12e/0x2c0 [ 62.786857][ T455] ? list_devices+0x570/0x570 [ 62.791530][ T455] ? __kasan_check_write+0x14/0x20 [ 62.796678][ T455] ? _copy_from_user+0x95/0xd0 [ 62.801436][ T455] dm_ctl_ioctl+0x8ee/0xca0 [ 62.805961][ T455] ? list_devices+0x570/0x570 [ 62.810660][ T455] ? dm_poll+0x120/0x120 [ 62.814905][ T455] ? security_file_ioctl+0x84/0xa0 [ 62.820073][ T455] ? dm_poll+0x120/0x120 [ 62.824302][ T455] __se_sys_ioctl+0x121/0x1a0 [ 62.828992][ T455] __x64_sys_ioctl+0x7b/0x90 [ 62.833602][ T455] do_syscall_64+0x31/0x40 [ 62.838033][ T455] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 62.843922][ T455] RIP: 0033:0x7fa7decc71d9 [ 62.848345][ T455] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 62.868443][ T455] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 62.876890][ T455] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 62.884882][ T455] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 62.892920][ T455] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 62.900926][ T455] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 62.908920][ T455] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 62.916905][ T455] ---[ end trace f390c9bb7518486a ]--- [ 62.927403][ T457] FAULT_INJECTION: forcing a failure. [ 62.927403][ T457] name failslab, interval 1, probability 0, space 0, times 0 [ 62.940020][ T457] CPU: 1 PID: 457 Comm: syz.2.42 Tainted: G W syzkaller #0 [ 62.948495][ T457] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 62.958530][ T457] Call Trace: [ 62.961815][ T457] __dump_stack+0x21/0x24 [ 62.966126][ T457] dump_stack_lvl+0x1a7/0x208 [ 62.970787][ T457] ? show_regs_print_info+0x18/0x18 [ 62.975994][ T457] ? __x64_sys_ioctl+0x7b/0x90 [ 62.980736][ T457] dump_stack+0x15/0x1c [ 62.984876][ T457] should_fail+0x3ab/0x500 [ 62.989276][ T457] ? kvasprintf_const+0xd7/0x240 [ 62.994189][ T457] __should_failslab+0xa4/0xe0 [ 62.998965][ T457] should_failslab+0x9/0x20 [ 63.003443][ T457] __kmalloc_track_caller+0x5f/0x310 [ 63.008712][ T457] ? memset+0x35/0x40 [ 63.012674][ T457] kstrdup_const+0x55/0x90 [ 63.017065][ T457] kvasprintf_const+0xd7/0x240 [ 63.021827][ T457] kobject_set_name_vargs+0x61/0x110 [ 63.027101][ T457] device_create+0x240/0x300 [ 63.031677][ T457] ? root_device_unregister+0x80/0x80 [ 63.037033][ T457] ? vsnprintf+0x189d/0x1990 [ 63.041607][ T457] bdi_register_va+0x90/0x5f0 [ 63.046262][ T457] bdi_register+0xdf/0x130 [ 63.050661][ T457] ? __kasan_check_write+0x14/0x20 [ 63.055750][ T457] ? _raw_spin_lock+0x94/0xf0 [ 63.060403][ T457] ? bdi_register_va+0x5f0/0x5f0 [ 63.065343][ T457] ? hashlen_string+0x55/0x120 [ 63.070090][ T457] ? blk_alloc_devt+0xda/0x330 [ 63.074830][ T457] __device_add_disk+0x538/0x1010 [ 63.079842][ T457] device_add_disk_no_queue_reg+0x21/0x30 [ 63.085566][ T457] dm_create+0x992/0xdd0 [ 63.089787][ T457] dev_create+0x12e/0x2c0 [ 63.094095][ T457] ? list_devices+0x570/0x570 [ 63.098751][ T457] ? __kasan_check_write+0x14/0x20 [ 63.103873][ T457] ? _copy_from_user+0x95/0xd0 [ 63.108617][ T457] dm_ctl_ioctl+0x8ee/0xca0 [ 63.113103][ T457] ? list_devices+0x570/0x570 [ 63.117757][ T457] ? dm_poll+0x120/0x120 [ 63.121983][ T457] ? security_file_ioctl+0x84/0xa0 [ 63.127073][ T457] ? dm_poll+0x120/0x120 [ 63.131295][ T457] __se_sys_ioctl+0x121/0x1a0 [ 63.135949][ T457] __x64_sys_ioctl+0x7b/0x90 [ 63.140531][ T457] do_syscall_64+0x31/0x40 [ 63.144938][ T457] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 63.150838][ T457] RIP: 0033:0x7fa7decc71d9 [ 63.155233][ T457] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 63.174824][ T457] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 63.183217][ T457] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 63.191170][ T457] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 63.199124][ T457] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 63.207103][ T457] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 63.215058][ T457] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 63.223884][ T457] ------------[ cut here ]------------ [ 63.229409][ T457] WARNING: CPU: 1 PID: 457 at block/genhd.c:821 __device_add_disk+0xcf9/0x1010 [ 63.238357][ T457] Modules linked in: [ 63.242253][ T457] CPU: 1 PID: 457 Comm: syz.2.42 Tainted: G W syzkaller #0 [ 63.250807][ T457] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 63.260909][ T457] RIP: 0010:__device_add_disk+0xcf9/0x1010 [ 63.266788][ T457] Code: ff e8 fb 8a 31 ff 0f 0b e9 74 fe ff ff e8 ef 8a 31 ff 0f 0b e9 64 f4 ff ff e8 e3 8a 31 ff 0f 0b e9 a4 f9 ff ff e8 d7 8a 31 ff <0f> 0b e9 52 f8 ff ff e8 cb 8a 31 ff e9 77 fd ff ff e8 c1 8a 31 ff [ 63.286427][ T457] RSP: 0018:ffffc90000f77a78 EFLAGS: 00010293 [ 63.292484][ T457] RAX: ffffffff82332db9 RBX: ffff888111fdd000 RCX: ffff888111d59400 [ 63.300476][ T457] RDX: 0000000000000000 RSI: 00000000fffffff4 RDI: 0000000000000000 [ 63.308466][ T457] RBP: ffffc90000f77b00 R08: 0000000000000015 R09: ffffffff84a000c5 [ 63.316459][ T457] R10: 0000000000000003 R11: 000000008ae260e1 R12: ffff888111fdd348 [ 63.324431][ T457] R13: ffff888111fdb000 R14: 00000000fffffff4 R15: ffff888111fdd068 [ 63.332432][ T457] FS: 0000555592d51500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 63.341395][ T457] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 63.348295][ T457] CR2: 0000001b33563fff CR3: 0000000111a34000 CR4: 00000000003506a0 [ 63.356333][ T457] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 63.364297][ T457] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 63.372281][ T457] Call Trace: [ 63.375581][ T457] device_add_disk_no_queue_reg+0x21/0x30 [ 63.381301][ T457] dm_create+0x992/0xdd0 [ 63.385551][ T457] dev_create+0x12e/0x2c0 [ 63.389884][ T457] ? list_devices+0x570/0x570 [ 63.394545][ T457] ? __kasan_check_write+0x14/0x20 [ 63.399671][ T457] ? _copy_from_user+0x95/0xd0 [ 63.404427][ T457] dm_ctl_ioctl+0x8ee/0xca0 [ 63.408947][ T457] ? list_devices+0x570/0x570 [ 63.413638][ T457] ? dm_poll+0x120/0x120 [ 63.417904][ T457] ? security_file_ioctl+0x84/0xa0 [ 63.423008][ T457] ? dm_poll+0x120/0x120 [ 63.427266][ T457] __se_sys_ioctl+0x121/0x1a0 [ 63.431927][ T457] __x64_sys_ioctl+0x7b/0x90 [ 63.436526][ T457] do_syscall_64+0x31/0x40 [ 63.440938][ T457] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 63.446845][ T457] RIP: 0033:0x7fa7decc71d9 [ 63.451250][ T457] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 63.470895][ T457] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 63.479396][ T457] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 63.487384][ T457] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 63.495414][ T457] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 63.503388][ T457] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 63.511386][ T457] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 63.519391][ T457] ---[ end trace f390c9bb7518486b ]--- [ 63.536726][ T459] FAULT_INJECTION: forcing a failure. [ 63.536726][ T459] name failslab, interval 1, probability 0, space 0, times 0 [ 63.549496][ T459] CPU: 1 PID: 459 Comm: syz.2.43 Tainted: G W syzkaller #0 [ 63.557982][ T459] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 63.568013][ T459] Call Trace: [ 63.571282][ T459] __dump_stack+0x21/0x24 [ 63.575584][ T459] dump_stack_lvl+0x1a7/0x208 [ 63.580235][ T459] ? show_regs_print_info+0x18/0x18 [ 63.585428][ T459] ? __x64_sys_ioctl+0x7b/0x90 [ 63.590167][ T459] dump_stack+0x15/0x1c [ 63.594311][ T459] should_fail+0x3ab/0x500 [ 63.598709][ T459] ? kvasprintf_const+0xd7/0x240 [ 63.603650][ T459] __should_failslab+0xa4/0xe0 [ 63.608408][ T459] should_failslab+0x9/0x20 [ 63.612888][ T459] __kmalloc_track_caller+0x5f/0x310 [ 63.618236][ T459] ? memset+0x35/0x40 [ 63.622223][ T459] kstrdup_const+0x55/0x90 [ 63.626632][ T459] kvasprintf_const+0xd7/0x240 [ 63.631368][ T459] kobject_set_name_vargs+0x61/0x110 [ 63.636634][ T459] device_create+0x240/0x300 [ 63.641210][ T459] ? root_device_unregister+0x80/0x80 [ 63.646558][ T459] ? vsnprintf+0x189d/0x1990 [ 63.651125][ T459] bdi_register_va+0x90/0x5f0 [ 63.655780][ T459] bdi_register+0xdf/0x130 [ 63.660293][ T459] ? __kasan_check_write+0x14/0x20 [ 63.665385][ T459] ? _raw_spin_lock+0x94/0xf0 [ 63.670045][ T459] ? bdi_register_va+0x5f0/0x5f0 [ 63.674961][ T459] ? hashlen_string+0x55/0x120 [ 63.679730][ T459] ? blk_alloc_devt+0xda/0x330 [ 63.684469][ T459] __device_add_disk+0x538/0x1010 [ 63.689469][ T459] device_add_disk_no_queue_reg+0x21/0x30 [ 63.695184][ T459] dm_create+0x992/0xdd0 [ 63.699406][ T459] dev_create+0x12e/0x2c0 [ 63.703709][ T459] ? list_devices+0x570/0x570 [ 63.708382][ T459] ? __kasan_check_write+0x14/0x20 [ 63.713468][ T459] ? _copy_from_user+0x95/0xd0 [ 63.718205][ T459] dm_ctl_ioctl+0x8ee/0xca0 [ 63.722696][ T459] ? list_devices+0x570/0x570 [ 63.727347][ T459] ? dm_poll+0x120/0x120 [ 63.731569][ T459] ? security_file_ioctl+0x84/0xa0 [ 63.736655][ T459] ? dm_poll+0x120/0x120 [ 63.740877][ T459] __se_sys_ioctl+0x121/0x1a0 [ 63.745529][ T459] __x64_sys_ioctl+0x7b/0x90 [ 63.750097][ T459] do_syscall_64+0x31/0x40 [ 63.754490][ T459] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 63.760356][ T459] RIP: 0033:0x7fa7decc71d9 [ 63.764751][ T459] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 63.784335][ T459] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 63.792727][ T459] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 2026/10/11 13:03:12 executed programs: 28 [ 63.800679][ T459] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 63.808632][ T459] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 63.816581][ T459] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 63.824561][ T459] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 63.833064][ T459] ------------[ cut here ]------------ [ 63.838764][ T459] WARNING: CPU: 0 PID: 459 at block/genhd.c:821 __device_add_disk+0xcf9/0x1010 [ 63.847763][ T459] Modules linked in: [ 63.851692][ T459] CPU: 0 PID: 459 Comm: syz.2.43 Tainted: G W syzkaller #0 [ 63.860215][ T459] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 63.870318][ T459] RIP: 0010:__device_add_disk+0xcf9/0x1010 [ 63.876132][ T459] Code: ff e8 fb 8a 31 ff 0f 0b e9 74 fe ff ff e8 ef 8a 31 ff 0f 0b e9 64 f4 ff ff e8 e3 8a 31 ff 0f 0b e9 a4 f9 ff ff e8 d7 8a 31 ff <0f> 0b e9 52 f8 ff ff e8 cb 8a 31 ff e9 77 fd ff ff e8 c1 8a 31 ff [ 63.895750][ T459] RSP: 0018:ffffc90000f87a78 EFLAGS: 00010293 [ 63.901800][ T459] RAX: ffffffff82332db9 RBX: ffff888112815000 RCX: ffff888112820000 [ 63.910016][ T459] RDX: 0000000000000000 RSI: 00000000fffffff4 RDI: 0000000000000000 [ 63.918069][ T459] RBP: ffffc90000f87b00 R08: 0000000000000015 R09: ffffffff84a000c5 [ 63.926089][ T459] R10: 0000000000000003 R11: 000000008ae260e1 R12: ffff888112815348 [ 63.934063][ T459] R13: ffff888112813000 R14: 00000000fffffff4 R15: ffff888112815068 [ 63.942054][ T459] FS: 0000555592d51500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 63.951004][ T459] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 63.957605][ T459] CR2: 0000001b33563fff CR3: 0000000111470000 CR4: 00000000003506a0 [ 63.965587][ T459] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 63.973567][ T459] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 63.981548][ T459] Call Trace: [ 63.984853][ T459] device_add_disk_no_queue_reg+0x21/0x30 [ 63.990739][ T459] dm_create+0x992/0xdd0 [ 63.994989][ T459] dev_create+0x12e/0x2c0 [ 63.999508][ T459] ? list_devices+0x570/0x570 [ 64.004187][ T459] ? __kasan_check_write+0x14/0x20 [ 64.009324][ T459] ? _copy_from_user+0x95/0xd0 [ 64.014118][ T459] dm_ctl_ioctl+0x8ee/0xca0 [ 64.018635][ T459] ? list_devices+0x570/0x570 [ 64.023306][ T459] ? dm_poll+0x120/0x120 [ 64.027569][ T459] ? security_file_ioctl+0x84/0xa0 [ 64.032678][ T459] ? dm_poll+0x120/0x120 [ 64.036927][ T459] __se_sys_ioctl+0x121/0x1a0 [ 64.041623][ T459] __x64_sys_ioctl+0x7b/0x90 [ 64.046241][ T459] do_syscall_64+0x31/0x40 [ 64.050654][ T459] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 64.056557][ T459] RIP: 0033:0x7fa7decc71d9 [ 64.060972][ T459] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 64.080590][ T459] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 64.089047][ T459] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 64.097036][ T459] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 64.105010][ T459] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 64.113008][ T459] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 64.120990][ T459] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 64.128979][ T459] ---[ end trace f390c9bb7518486c ]--- [ 64.140633][ T461] FAULT_INJECTION: forcing a failure. [ 64.140633][ T461] name failslab, interval 1, probability 0, space 0, times 0 [ 64.153284][ T461] CPU: 1 PID: 461 Comm: syz.2.44 Tainted: G W syzkaller #0 [ 64.161776][ T461] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 64.171818][ T461] Call Trace: [ 64.175096][ T461] __dump_stack+0x21/0x24 [ 64.179414][ T461] dump_stack_lvl+0x1a7/0x208 [ 64.184078][ T461] ? show_regs_print_info+0x18/0x18 [ 64.189264][ T461] dump_stack+0x15/0x1c [ 64.193404][ T461] should_fail+0x3ab/0x500 [ 64.197803][ T461] ? device_add+0xb9/0xc00 [ 64.202207][ T461] __should_failslab+0xa4/0xe0 [ 64.206953][ T461] should_failslab+0x9/0x20 [ 64.211438][ T461] kmem_cache_alloc_trace+0x3a/0x2e0 [ 64.216720][ T461] device_add+0xb9/0xc00 [ 64.220942][ T461] ? kobject_set_name_vargs+0xca/0x110 [ 64.226380][ T461] device_create+0x26c/0x300 [ 64.230955][ T461] ? root_device_unregister+0x80/0x80 [ 64.236324][ T461] ? vsnprintf+0x189d/0x1990 [ 64.240915][ T461] bdi_register_va+0x90/0x5f0 [ 64.245576][ T461] bdi_register+0xdf/0x130 [ 64.249998][ T461] ? __kasan_check_write+0x14/0x20 [ 64.255091][ T461] ? _raw_spin_lock+0x94/0xf0 [ 64.259758][ T461] ? bdi_register_va+0x5f0/0x5f0 [ 64.264674][ T461] ? hashlen_string+0x55/0x120 [ 64.269414][ T461] ? blk_alloc_devt+0xda/0x330 [ 64.274176][ T461] __device_add_disk+0x538/0x1010 [ 64.279183][ T461] device_add_disk_no_queue_reg+0x21/0x30 [ 64.284885][ T461] dm_create+0x992/0xdd0 [ 64.289121][ T461] dev_create+0x12e/0x2c0 [ 64.293449][ T461] ? list_devices+0x570/0x570 [ 64.298112][ T461] ? __kasan_check_write+0x14/0x20 [ 64.303204][ T461] ? _copy_from_user+0x95/0xd0 [ 64.307948][ T461] dm_ctl_ioctl+0x8ee/0xca0 [ 64.312430][ T461] ? list_devices+0x570/0x570 [ 64.317087][ T461] ? dm_poll+0x120/0x120 [ 64.321318][ T461] ? security_file_ioctl+0x84/0xa0 [ 64.326438][ T461] ? dm_poll+0x120/0x120 [ 64.330683][ T461] __se_sys_ioctl+0x121/0x1a0 [ 64.335358][ T461] __x64_sys_ioctl+0x7b/0x90 [ 64.339947][ T461] do_syscall_64+0x31/0x40 [ 64.344363][ T461] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 64.350258][ T461] RIP: 0033:0x7fa7decc71d9 [ 64.354660][ T461] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 64.374252][ T461] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 64.382653][ T461] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 64.390616][ T461] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 64.398571][ T461] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 64.406531][ T461] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 64.414495][ T461] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 64.422952][ T461] ------------[ cut here ]------------ [ 64.428484][ T461] WARNING: CPU: 1 PID: 461 at block/genhd.c:821 __device_add_disk+0xcf9/0x1010 [ 64.437570][ T461] Modules linked in: [ 64.441467][ T461] CPU: 1 PID: 461 Comm: syz.2.44 Tainted: G W syzkaller #0 [ 64.449973][ T461] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 64.460048][ T461] RIP: 0010:__device_add_disk+0xcf9/0x1010 [ 64.465864][ T461] Code: ff e8 fb 8a 31 ff 0f 0b e9 74 fe ff ff e8 ef 8a 31 ff 0f 0b e9 64 f4 ff ff e8 e3 8a 31 ff 0f 0b e9 a4 f9 ff ff e8 d7 8a 31 ff <0f> 0b e9 52 f8 ff ff e8 cb 8a 31 ff e9 77 fd ff ff e8 c1 8a 31 ff [ 64.485490][ T461] RSP: 0018:ffffc90000f97a78 EFLAGS: 00010293 [ 64.491539][ T461] RAX: ffffffff82332db9 RBX: ffff888112812000 RCX: ffff888112823c00 [ 64.499527][ T461] RDX: 0000000000000000 RSI: 00000000fffffff4 RDI: 0000000000000000 [ 64.507511][ T461] RBP: ffffc90000f97b00 R08: 0000000000000014 R09: ffffffff84a000c5 [ 64.515490][ T461] R10: 0000000000000001 R11: 000000009a0a5957 R12: ffff888112812348 [ 64.523455][ T461] R13: ffff888112817000 R14: 00000000fffffff4 R15: ffff888112812068 [ 64.531442][ T461] FS: 0000555592d51500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 64.540382][ T461] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 64.546987][ T461] CR2: 0000001b33563fff CR3: 0000000112155000 CR4: 00000000003506a0 [ 64.554957][ T461] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 64.562957][ T461] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 64.570963][ T461] Call Trace: [ 64.574239][ T461] device_add_disk_no_queue_reg+0x21/0x30 [ 64.580005][ T461] dm_create+0x992/0xdd0 [ 64.584248][ T461] dev_create+0x12e/0x2c0 [ 64.588657][ T461] ? list_devices+0x570/0x570 [ 64.593328][ T461] ? __kasan_check_write+0x14/0x20 [ 64.598450][ T461] ? _copy_from_user+0x95/0xd0 [ 64.603213][ T461] dm_ctl_ioctl+0x8ee/0xca0 [ 64.607738][ T461] ? list_devices+0x570/0x570 [ 64.612406][ T461] ? dm_poll+0x120/0x120 [ 64.616776][ T461] ? security_file_ioctl+0x84/0xa0 [ 64.621885][ T461] ? dm_poll+0x120/0x120 [ 64.626268][ T461] __se_sys_ioctl+0x121/0x1a0 [ 64.631155][ T461] __x64_sys_ioctl+0x7b/0x90 [ 64.635769][ T461] do_syscall_64+0x31/0x40 [ 64.640192][ T461] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 64.646098][ T461] RIP: 0033:0x7fa7decc71d9 [ 64.650506][ T461] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 64.670136][ T461] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 64.678571][ T461] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 64.686554][ T461] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 64.694516][ T461] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 64.702532][ T461] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 64.710635][ T461] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 64.718623][ T461] ---[ end trace f390c9bb7518486d ]--- [ 64.730090][ T463] FAULT_INJECTION: forcing a failure. [ 64.730090][ T463] name failslab, interval 1, probability 0, space 0, times 0 [ 64.742718][ T463] CPU: 0 PID: 463 Comm: syz.2.45 Tainted: G W syzkaller #0 [ 64.751222][ T463] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 64.761260][ T463] Call Trace: [ 64.764540][ T463] __dump_stack+0x21/0x24 [ 64.768849][ T463] dump_stack_lvl+0x1a7/0x208 [ 64.773512][ T463] ? show_regs_print_info+0x18/0x18 [ 64.778700][ T463] ? slab_post_alloc_hook+0x5d/0x2f0 [ 64.783986][ T463] ? security_inode_alloc+0x33/0x110 [ 64.789253][ T463] ? inode_init_always+0x725/0x9c0 [ 64.794343][ T463] ? iget5_locked+0xe0/0x270 [ 64.798912][ T463] ? dm_create+0x8b5/0xdd0 [ 64.803314][ T463] ? dev_create+0x12e/0x2c0 [ 64.807797][ T463] dump_stack+0x15/0x1c [ 64.811929][ T463] should_fail+0x3ab/0x500 [ 64.816324][ T463] ? device_create+0x13a/0x300 [ 64.821066][ T463] __should_failslab+0xa4/0xe0 [ 64.825805][ T463] should_failslab+0x9/0x20 [ 64.830287][ T463] kmem_cache_alloc_trace+0x3a/0x2e0 [ 64.835553][ T463] device_create+0x13a/0x300 [ 64.840122][ T463] ? root_device_unregister+0x80/0x80 [ 64.845490][ T463] ? vsnprintf+0x189d/0x1990 [ 64.850058][ T463] bdi_register_va+0x90/0x5f0 [ 64.854717][ T463] bdi_register+0xdf/0x130 [ 64.859130][ T463] ? __kasan_check_write+0x14/0x20 [ 64.864221][ T463] ? _raw_spin_lock+0x94/0xf0 [ 64.868877][ T463] ? bdi_register_va+0x5f0/0x5f0 [ 64.873796][ T463] ? hashlen_string+0x55/0x120 [ 64.878544][ T463] ? blk_alloc_devt+0xda/0x330 [ 64.883288][ T463] __device_add_disk+0x538/0x1010 [ 64.888296][ T463] device_add_disk_no_queue_reg+0x21/0x30 [ 64.893997][ T463] dm_create+0x992/0xdd0 [ 64.898237][ T463] dev_create+0x12e/0x2c0 [ 64.902549][ T463] ? list_devices+0x570/0x570 [ 64.907231][ T463] ? __kasan_check_write+0x14/0x20 [ 64.912334][ T463] ? _copy_from_user+0x95/0xd0 [ 64.917078][ T463] dm_ctl_ioctl+0x8ee/0xca0 [ 64.921562][ T463] ? list_devices+0x570/0x570 [ 64.926216][ T463] ? dm_poll+0x120/0x120 [ 64.930456][ T463] ? security_file_ioctl+0x84/0xa0 [ 64.935545][ T463] ? dm_poll+0x120/0x120 [ 64.939766][ T463] __se_sys_ioctl+0x121/0x1a0 [ 64.944422][ T463] __x64_sys_ioctl+0x7b/0x90 [ 64.948993][ T463] do_syscall_64+0x31/0x40 [ 64.953393][ T463] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 64.959263][ T463] RIP: 0033:0x7fa7decc71d9 [ 64.963661][ T463] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 64.983271][ T463] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 64.991665][ T463] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 64.999617][ T463] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 65.007572][ T463] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 65.015523][ T463] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 65.023566][ T463] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 65.033774][ T463] ------------[ cut here ]------------ [ 65.039440][ T463] WARNING: CPU: 0 PID: 463 at block/genhd.c:821 __device_add_disk+0xcf9/0x1010 [ 65.048417][ T463] Modules linked in: [ 65.052328][ T463] CPU: 0 PID: 463 Comm: syz.2.45 Tainted: G W syzkaller #0 [ 65.060873][ T463] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 65.070978][ T463] RIP: 0010:__device_add_disk+0xcf9/0x1010 [ 65.076881][ T463] Code: ff e8 fb 8a 31 ff 0f 0b e9 74 fe ff ff e8 ef 8a 31 ff 0f 0b e9 64 f4 ff ff e8 e3 8a 31 ff 0f 0b e9 a4 f9 ff ff e8 d7 8a 31 ff <0f> 0b e9 52 f8 ff ff e8 cb 8a 31 ff e9 77 fd ff ff e8 c1 8a 31 ff [ 65.096526][ T463] RSP: 0018:ffffc90000dc7a78 EFLAGS: 00010293 [ 65.102572][ T463] RAX: ffffffff82332db9 RBX: ffff8881100e9000 RCX: ffff888112180000 [ 65.110579][ T463] RDX: 0000000000000000 RSI: 00000000fffffff4 RDI: 0000000000000000 [ 65.118614][ T463] RBP: ffffc90000dc7b00 R08: 0000000000000800 R09: 1ffffffff0cc74c2 [ 65.126667][ T463] R10: dffffc0000000000 R11: fffffbfff0cc74c3 R12: ffff8881100e9348 [ 65.134638][ T463] R13: ffff8881100ed000 R14: 00000000fffffff4 R15: ffff8881100e9068 [ 65.142670][ T463] FS: 0000555592d51500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 65.151619][ T463] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 65.158246][ T463] CR2: 000011bf69372000 CR3: 000000010ff86000 CR4: 00000000003506b0 [ 65.166244][ T463] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 65.174198][ T463] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 65.182634][ T463] Call Trace: [ 65.185940][ T463] device_add_disk_no_queue_reg+0x21/0x30 [ 65.191665][ T463] dm_create+0x992/0xdd0 [ 65.195919][ T463] dev_create+0x12e/0x2c0 [ 65.200243][ T463] ? list_devices+0x570/0x570 [ 65.204923][ T463] ? __kasan_check_write+0x14/0x20 [ 65.210038][ T463] ? _copy_from_user+0x95/0xd0 [ 65.214801][ T463] dm_ctl_ioctl+0x8ee/0xca0 [ 65.219315][ T463] ? list_devices+0x570/0x570 [ 65.223988][ T463] ? dm_poll+0x120/0x120 [ 65.228248][ T463] ? security_file_ioctl+0x84/0xa0 [ 65.233356][ T463] ? dm_poll+0x120/0x120 [ 65.237614][ T463] __se_sys_ioctl+0x121/0x1a0 [ 65.242277][ T463] __x64_sys_ioctl+0x7b/0x90 [ 65.246893][ T463] do_syscall_64+0x31/0x40 [ 65.251339][ T463] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 65.257241][ T463] RIP: 0033:0x7fa7decc71d9 [ 65.261652][ T463] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 65.281322][ T463] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 65.289757][ T463] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 65.297741][ T463] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 65.305722][ T463] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 65.313701][ T463] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 65.321757][ T463] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 65.329759][ T463] ---[ end trace f390c9bb7518486e ]--- [ 65.340428][ T465] FAULT_INJECTION: forcing a failure. [ 65.340428][ T465] name failslab, interval 1, probability 0, space 0, times 0 [ 65.353073][ T465] CPU: 1 PID: 465 Comm: syz.2.46 Tainted: G W syzkaller #0 [ 65.361566][ T465] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 65.371605][ T465] Call Trace: [ 65.374900][ T465] __dump_stack+0x21/0x24 [ 65.379206][ T465] dump_stack_lvl+0x1a7/0x208 [ 65.383881][ T465] ? show_regs_print_info+0x18/0x18 [ 65.389068][ T465] ? slab_post_alloc_hook+0x5d/0x2f0 [ 65.394333][ T465] ? security_inode_alloc+0x33/0x110 [ 65.399708][ T465] ? inode_init_always+0x725/0x9c0 [ 65.404799][ T465] ? iget5_locked+0xe0/0x270 [ 65.409370][ T465] ? dm_create+0x8b5/0xdd0 [ 65.413765][ T465] ? dev_create+0x12e/0x2c0 [ 65.418258][ T465] dump_stack+0x15/0x1c [ 65.422414][ T465] should_fail+0x3ab/0x500 [ 65.426814][ T465] ? device_create+0x13a/0x300 [ 65.431565][ T465] __should_failslab+0xa4/0xe0 [ 65.436329][ T465] should_failslab+0x9/0x20 [ 65.440915][ T465] kmem_cache_alloc_trace+0x3a/0x2e0 [ 65.446362][ T465] device_create+0x13a/0x300 [ 65.450935][ T465] ? root_device_unregister+0x80/0x80 [ 65.456281][ T465] ? vsnprintf+0x189d/0x1990 [ 65.460848][ T465] bdi_register_va+0x90/0x5f0 [ 65.465503][ T465] bdi_register+0xdf/0x130 [ 65.469896][ T465] ? __kasan_check_write+0x14/0x20 [ 65.474988][ T465] ? _raw_spin_lock+0x94/0xf0 [ 65.479639][ T465] ? bdi_register_va+0x5f0/0x5f0 [ 65.484584][ T465] ? hashlen_string+0x55/0x120 [ 65.489325][ T465] ? blk_alloc_devt+0xda/0x330 [ 65.494066][ T465] __device_add_disk+0x538/0x1010 [ 65.499067][ T465] device_add_disk_no_queue_reg+0x21/0x30 [ 65.504936][ T465] dm_create+0x992/0xdd0 [ 65.509162][ T465] dev_create+0x12e/0x2c0 [ 65.513506][ T465] ? list_devices+0x570/0x570 [ 65.518167][ T465] ? __kasan_check_write+0x14/0x20 [ 65.523255][ T465] ? _copy_from_user+0x95/0xd0 [ 65.528019][ T465] dm_ctl_ioctl+0x8ee/0xca0 [ 65.532501][ T465] ? list_devices+0x570/0x570 [ 65.537157][ T465] ? dm_poll+0x120/0x120 [ 65.541381][ T465] ? security_file_ioctl+0x84/0xa0 [ 65.546478][ T465] ? dm_poll+0x120/0x120 [ 65.550701][ T465] __se_sys_ioctl+0x121/0x1a0 [ 65.555372][ T465] __x64_sys_ioctl+0x7b/0x90 [ 65.559941][ T465] do_syscall_64+0x31/0x40 [ 65.564420][ T465] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 65.570288][ T465] RIP: 0033:0x7fa7decc71d9 [ 65.574684][ T465] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 65.594271][ T465] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 65.602667][ T465] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 65.610628][ T465] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 65.618670][ T465] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 65.626620][ T465] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 65.634568][ T465] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 65.643050][ T465] ------------[ cut here ]------------ [ 65.648546][ T465] WARNING: CPU: 1 PID: 465 at block/genhd.c:821 __device_add_disk+0xcf9/0x1010 [ 65.657496][ T465] Modules linked in: [ 65.661398][ T465] CPU: 1 PID: 465 Comm: syz.2.46 Tainted: G W syzkaller #0 [ 65.669917][ T465] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 65.680006][ T465] RIP: 0010:__device_add_disk+0xcf9/0x1010 [ 65.685822][ T465] Code: ff e8 fb 8a 31 ff 0f 0b e9 74 fe ff ff e8 ef 8a 31 ff 0f 0b e9 64 f4 ff ff e8 e3 8a 31 ff 0f 0b e9 a4 f9 ff ff e8 d7 8a 31 ff <0f> 0b e9 52 f8 ff ff e8 cb 8a 31 ff e9 77 fd ff ff e8 c1 8a 31 ff [ 65.705444][ T465] RSP: 0018:ffffc90000f57a78 EFLAGS: 00010293 [ 65.711492][ T465] RAX: ffffffff82332db9 RBX: ffff88811299f000 RCX: ffff888112825000 [ 65.719471][ T465] RDX: 0000000000000000 RSI: 00000000fffffff4 RDI: 0000000000000000 [ 65.727448][ T465] RBP: ffffc90000f57b00 R08: 0000000000000800 R09: 1ffffffff0cc74c2 [ 65.735437][ T465] R10: dffffc0000000000 R11: fffffbfff0cc74c3 R12: ffff88811299f348 [ 65.743397][ T465] R13: ffff888112998000 R14: 00000000fffffff4 R15: ffff88811299f068 [ 65.751399][ T465] FS: 0000555592d51500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 65.760360][ T465] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 65.766964][ T465] CR2: 0000001b33563fff CR3: 000000011213c000 CR4: 00000000003506a0 [ 65.774934][ T465] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 65.783041][ T465] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 65.791040][ T465] Call Trace: [ 65.794324][ T465] device_add_disk_no_queue_reg+0x21/0x30 [ 65.800057][ T465] dm_create+0x992/0xdd0 [ 65.804382][ T465] dev_create+0x12e/0x2c0 [ 65.808729][ T465] ? list_devices+0x570/0x570 [ 65.813401][ T465] ? __kasan_check_write+0x14/0x20 [ 65.818521][ T465] ? _copy_from_user+0x95/0xd0 [ 65.823277][ T465] dm_ctl_ioctl+0x8ee/0xca0 [ 65.827800][ T465] ? list_devices+0x570/0x570 [ 65.832474][ T465] ? dm_poll+0x120/0x120 [ 65.836727][ T465] ? security_file_ioctl+0x84/0xa0 [ 65.841858][ T465] ? dm_poll+0x120/0x120 [ 65.846137][ T465] __se_sys_ioctl+0x121/0x1a0 [ 65.850812][ T465] __x64_sys_ioctl+0x7b/0x90 [ 65.855404][ T465] do_syscall_64+0x31/0x40 [ 65.859942][ T465] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 65.865836][ T465] RIP: 0033:0x7fa7decc71d9 [ 65.870254][ T465] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 65.889969][ T465] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 65.898416][ T465] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 65.906424][ T465] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 65.914390][ T465] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 65.922378][ T465] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 65.930389][ T465] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 65.938374][ T465] ---[ end trace f390c9bb7518486f ]--- [ 65.948605][ T467] FAULT_INJECTION: forcing a failure. [ 65.948605][ T467] name failslab, interval 1, probability 0, space 0, times 0 [ 65.961218][ T467] CPU: 1 PID: 467 Comm: syz.2.47 Tainted: G W syzkaller #0 [ 65.969692][ T467] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 65.979751][ T467] Call Trace: [ 65.983021][ T467] __dump_stack+0x21/0x24 [ 65.987325][ T467] dump_stack_lvl+0x1a7/0x208 [ 65.991980][ T467] ? show_regs_print_info+0x18/0x18 [ 65.997164][ T467] ? __x64_sys_ioctl+0x7b/0x90 [ 66.001905][ T467] dump_stack+0x15/0x1c [ 66.006039][ T467] should_fail+0x3ab/0x500 [ 66.010445][ T467] ? kvasprintf_const+0xd7/0x240 [ 66.015370][ T467] __should_failslab+0xa4/0xe0 [ 66.020127][ T467] should_failslab+0x9/0x20 [ 66.024633][ T467] __kmalloc_track_caller+0x5f/0x310 [ 66.029900][ T467] ? memset+0x35/0x40 [ 66.033862][ T467] kstrdup_const+0x55/0x90 [ 66.038254][ T467] kvasprintf_const+0xd7/0x240 [ 66.042998][ T467] kobject_set_name_vargs+0x61/0x110 [ 66.048290][ T467] device_create+0x240/0x300 [ 66.052864][ T467] ? root_device_unregister+0x80/0x80 [ 66.058214][ T467] ? vsnprintf+0x189d/0x1990 [ 66.062800][ T467] bdi_register_va+0x90/0x5f0 [ 66.067452][ T467] bdi_register+0xdf/0x130 [ 66.071847][ T467] ? __kasan_check_write+0x14/0x20 [ 66.076938][ T467] ? _raw_spin_lock+0x94/0xf0 [ 66.081592][ T467] ? bdi_register_va+0x5f0/0x5f0 [ 66.086532][ T467] ? hashlen_string+0x55/0x120 [ 66.091305][ T467] ? blk_alloc_devt+0xda/0x330 [ 66.096050][ T467] __device_add_disk+0x538/0x1010 [ 66.101071][ T467] device_add_disk_no_queue_reg+0x21/0x30 [ 66.106766][ T467] dm_create+0x992/0xdd0 [ 66.110988][ T467] dev_create+0x12e/0x2c0 [ 66.115295][ T467] ? list_devices+0x570/0x570 [ 66.119952][ T467] ? __kasan_check_write+0x14/0x20 [ 66.125043][ T467] ? _copy_from_user+0x95/0xd0 [ 66.129789][ T467] dm_ctl_ioctl+0x8ee/0xca0 [ 66.134271][ T467] ? list_devices+0x570/0x570 [ 66.138939][ T467] ? dm_poll+0x120/0x120 [ 66.143170][ T467] ? security_file_ioctl+0x84/0xa0 [ 66.148275][ T467] ? dm_poll+0x120/0x120 [ 66.153534][ T467] __se_sys_ioctl+0x121/0x1a0 [ 66.158198][ T467] __x64_sys_ioctl+0x7b/0x90 [ 66.162769][ T467] do_syscall_64+0x31/0x40 [ 66.167162][ T467] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 66.173031][ T467] RIP: 0033:0x7fa7decc71d9 [ 66.177425][ T467] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 66.197009][ T467] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 66.205403][ T467] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 66.213356][ T467] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 66.221325][ T467] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 66.229276][ T467] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 66.237226][ T467] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 66.245556][ T467] ------------[ cut here ]------------ [ 66.251030][ T467] WARNING: CPU: 1 PID: 467 at block/genhd.c:821 __device_add_disk+0xcf9/0x1010 [ 66.259961][ T467] Modules linked in: [ 66.263964][ T467] CPU: 1 PID: 467 Comm: syz.2.47 Tainted: G W syzkaller #0 [ 66.272633][ T467] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 66.282712][ T467] RIP: 0010:__device_add_disk+0xcf9/0x1010 [ 66.288527][ T467] Code: ff e8 fb 8a 31 ff 0f 0b e9 74 fe ff ff e8 ef 8a 31 ff 0f 0b e9 64 f4 ff ff e8 e3 8a 31 ff 0f 0b e9 a4 f9 ff ff e8 d7 8a 31 ff <0f> 0b e9 52 f8 ff ff e8 cb 8a 31 ff e9 77 fd ff ff e8 c1 8a 31 ff [ 66.308156][ T467] RSP: 0018:ffffc90000f57a78 EFLAGS: 00010293 [ 66.314229][ T467] RAX: ffffffff82332db9 RBX: ffff88811299b000 RCX: ffff888112826400 [ 66.322216][ T467] RDX: 0000000000000000 RSI: 00000000fffffff4 RDI: 0000000000000000 [ 66.330199][ T467] RBP: ffffc90000f57b00 R08: 0000000000000015 R09: ffffffff84a000c5 [ 66.338227][ T467] R10: 0000000000000003 R11: 000000008ae260e1 R12: ffff88811299b348 [ 66.346218][ T467] R13: ffff88811299e000 R14: 00000000fffffff4 R15: ffff88811299b068 [ 66.354192][ T467] FS: 0000555592d51500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 66.363131][ T467] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 66.369799][ T467] CR2: 0000001b33563fff CR3: 000000011141a000 CR4: 00000000003506a0 [ 66.377795][ T467] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 66.385789][ T467] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 66.393745][ T467] Call Trace: [ 66.397051][ T467] device_add_disk_no_queue_reg+0x21/0x30 [ 66.402789][ T467] dm_create+0x992/0xdd0 [ 66.407046][ T467] dev_create+0x12e/0x2c0 [ 66.411363][ T467] ? list_devices+0x570/0x570 [ 66.416058][ T467] ? __kasan_check_write+0x14/0x20 [ 66.421163][ T467] ? _copy_from_user+0x95/0xd0 [ 66.425963][ T467] dm_ctl_ioctl+0x8ee/0xca0 [ 66.430473][ T467] ? list_devices+0x570/0x570 [ 66.435137][ T467] ? dm_poll+0x120/0x120 [ 66.439409][ T467] ? security_file_ioctl+0x84/0xa0 [ 66.444520][ T467] ? dm_poll+0x120/0x120 [ 66.448778][ T467] __se_sys_ioctl+0x121/0x1a0 [ 66.453445][ T467] __x64_sys_ioctl+0x7b/0x90 [ 66.458051][ T467] do_syscall_64+0x31/0x40 [ 66.462493][ T467] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 66.468421][ T467] RIP: 0033:0x7fa7decc71d9 [ 66.472844][ T467] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 66.492471][ T467] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 66.500969][ T467] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 66.508954][ T467] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 66.516937][ T467] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 66.524894][ T467] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 66.532908][ T467] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 66.540927][ T467] ---[ end trace f390c9bb75184870 ]--- [ 66.551513][ T469] FAULT_INJECTION: forcing a failure. [ 66.551513][ T469] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 66.564755][ T469] CPU: 0 PID: 469 Comm: syz.2.48 Tainted: G W syzkaller #0 [ 66.573235][ T469] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 66.583288][ T469] Call Trace: [ 66.586558][ T469] __dump_stack+0x21/0x24 [ 66.590891][ T469] dump_stack_lvl+0x1a7/0x208 [ 66.595554][ T469] ? show_regs_print_info+0x18/0x18 [ 66.600750][ T469] dump_stack+0x15/0x1c [ 66.604883][ T469] should_fail+0x3ab/0x500 [ 66.609276][ T469] should_fail_alloc_page+0x4f/0x60 [ 66.614446][ T469] __alloc_pages_nodemask+0x11a/0x640 [ 66.619795][ T469] ? arch_stack_walk+0xee/0x140 [ 66.624623][ T469] ? gfp_pfmemalloc_allowed+0x130/0x130 [ 66.630147][ T469] ? stack_trace_snprint+0xe0/0xe0 [ 66.635241][ T469] new_slab+0x84/0x3f0 [ 66.639293][ T469] ? __kasan_slab_alloc+0xc9/0xe0 [ 66.644295][ T469] ? slab_post_alloc_hook+0x5d/0x2f0 [ 66.649559][ T469] ___slab_alloc+0x2f8/0x4c0 [ 66.654128][ T469] ? dm_ctl_ioctl+0x8ee/0xca0 [ 66.658780][ T469] ? __se_sys_ioctl+0x121/0x1a0 [ 66.663605][ T469] ? device_create+0x13a/0x300 [ 66.668345][ T469] ? put_dec_trunc8+0x229/0x370 [ 66.673173][ T469] __slab_alloc+0x63/0xa0 [ 66.677478][ T469] ? device_create+0x13a/0x300 [ 66.682220][ T469] ? device_create+0x13a/0x300 [ 66.686960][ T469] kmem_cache_alloc_trace+0x1a8/0x2e0 [ 66.692309][ T469] ? device_create+0x13a/0x300 [ 66.697049][ T469] device_create+0x13a/0x300 [ 66.701618][ T469] ? root_device_unregister+0x80/0x80 [ 66.706963][ T469] ? vsnprintf+0x189d/0x1990 [ 66.711530][ T469] bdi_register_va+0x90/0x5f0 [ 66.716189][ T469] bdi_register+0xdf/0x130 [ 66.720605][ T469] ? __kasan_check_write+0x14/0x20 [ 66.725693][ T469] ? _raw_spin_lock+0x94/0xf0 [ 66.730347][ T469] ? bdi_register_va+0x5f0/0x5f0 [ 66.735269][ T469] ? hashlen_string+0x55/0x120 [ 66.740020][ T469] ? blk_alloc_devt+0xda/0x330 [ 66.744762][ T469] __device_add_disk+0x538/0x1010 [ 66.749774][ T469] device_add_disk_no_queue_reg+0x21/0x30 [ 66.755484][ T469] dm_create+0x992/0xdd0 [ 66.759709][ T469] dev_create+0x12e/0x2c0 [ 66.764012][ T469] ? list_devices+0x570/0x570 [ 66.768667][ T469] ? __kasan_check_write+0x14/0x20 [ 66.773758][ T469] ? _copy_from_user+0x95/0xd0 [ 66.778501][ T469] dm_ctl_ioctl+0x8ee/0xca0 [ 66.782988][ T469] ? list_devices+0x570/0x570 [ 66.787641][ T469] ? dm_poll+0x120/0x120 [ 66.791866][ T469] ? security_file_ioctl+0x84/0xa0 [ 66.797009][ T469] ? dm_poll+0x120/0x120 [ 66.801284][ T469] __se_sys_ioctl+0x121/0x1a0 [ 66.805989][ T469] __x64_sys_ioctl+0x7b/0x90 [ 66.810585][ T469] do_syscall_64+0x31/0x40 [ 66.814983][ T469] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 66.820857][ T469] RIP: 0033:0x7fa7decc71d9 [ 66.825259][ T469] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 66.844851][ T469] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 66.853250][ T469] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 66.861213][ T469] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 66.869170][ T469] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 66.877122][ T469] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 66.885075][ T469] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 66.901277][ T472] FAULT_INJECTION: forcing a failure. [ 66.901277][ T472] name failslab, interval 1, probability 0, space 0, times 0 [ 66.913919][ T472] CPU: 1 PID: 472 Comm: syz.2.49 Tainted: G W syzkaller #0 [ 66.922394][ T472] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 66.932428][ T472] Call Trace: [ 66.935723][ T472] __dump_stack+0x21/0x24 [ 66.940027][ T472] dump_stack_lvl+0x1a7/0x208 [ 66.944678][ T472] ? show_regs_print_info+0x18/0x18 [ 66.949852][ T472] ? __x64_sys_ioctl+0x7b/0x90 [ 66.954593][ T472] dump_stack+0x15/0x1c [ 66.958726][ T472] should_fail+0x3ab/0x500 [ 66.963222][ T472] ? kvasprintf_const+0xd7/0x240 [ 66.968147][ T472] __should_failslab+0xa4/0xe0 [ 66.972902][ T472] should_failslab+0x9/0x20 [ 66.977383][ T472] __kmalloc_track_caller+0x5f/0x310 [ 66.982684][ T472] ? memset+0x35/0x40 [ 66.986750][ T472] kstrdup_const+0x55/0x90 [ 66.991149][ T472] kvasprintf_const+0xd7/0x240 [ 66.995902][ T472] kobject_set_name_vargs+0x61/0x110 [ 67.001178][ T472] device_create+0x240/0x300 [ 67.005751][ T472] ? root_device_unregister+0x80/0x80 [ 67.011116][ T472] ? vsnprintf+0x189d/0x1990 [ 67.015688][ T472] bdi_register_va+0x90/0x5f0 [ 67.020542][ T472] bdi_register+0xdf/0x130 [ 67.024939][ T472] ? __kasan_check_write+0x14/0x20 [ 67.030026][ T472] ? _raw_spin_lock+0x94/0xf0 [ 67.034702][ T472] ? bdi_register_va+0x5f0/0x5f0 [ 67.039654][ T472] ? hashlen_string+0x55/0x120 [ 67.044395][ T472] ? blk_alloc_devt+0xda/0x330 [ 67.049138][ T472] __device_add_disk+0x538/0x1010 [ 67.054139][ T472] device_add_disk_no_queue_reg+0x21/0x30 [ 67.059837][ T472] dm_create+0x992/0xdd0 [ 67.064084][ T472] dev_create+0x12e/0x2c0 [ 67.068412][ T472] ? list_devices+0x570/0x570 [ 67.073065][ T472] ? __kasan_check_write+0x14/0x20 [ 67.078189][ T472] ? _copy_from_user+0x95/0xd0 [ 67.082930][ T472] dm_ctl_ioctl+0x8ee/0xca0 [ 67.087408][ T472] ? list_devices+0x570/0x570 [ 67.092071][ T472] ? dm_poll+0x120/0x120 [ 67.096294][ T472] ? security_file_ioctl+0x84/0xa0 [ 67.101384][ T472] ? dm_poll+0x120/0x120 [ 67.105616][ T472] __se_sys_ioctl+0x121/0x1a0 [ 67.110283][ T472] __x64_sys_ioctl+0x7b/0x90 [ 67.114871][ T472] do_syscall_64+0x31/0x40 [ 67.119310][ T472] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 67.125182][ T472] RIP: 0033:0x7fa7decc71d9 [ 67.129758][ T472] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 67.149645][ T472] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 67.158042][ T472] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 67.166003][ T472] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 67.173972][ T472] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 67.181931][ T472] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 67.189896][ T472] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 67.198031][ T472] ------------[ cut here ]------------ [ 67.203494][ T472] WARNING: CPU: 1 PID: 472 at block/genhd.c:821 __device_add_disk+0xcf9/0x1010 [ 67.212630][ T472] Modules linked in: [ 67.216582][ T472] CPU: 1 PID: 472 Comm: syz.2.49 Tainted: G W syzkaller #0 [ 67.225063][ T472] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 67.235143][ T472] RIP: 0010:__device_add_disk+0xcf9/0x1010 [ 67.240977][ T472] Code: ff e8 fb 8a 31 ff 0f 0b e9 74 fe ff ff e8 ef 8a 31 ff 0f 0b e9 64 f4 ff ff e8 e3 8a 31 ff 0f 0b e9 a4 f9 ff ff e8 d7 8a 31 ff <0f> 0b e9 52 f8 ff ff e8 cb 8a 31 ff e9 77 fd ff ff e8 c1 8a 31 ff [ 67.260601][ T472] RSP: 0018:ffffc90000dc7a78 EFLAGS: 00010293 [ 67.266788][ T472] RAX: ffffffff82332db9 RBX: ffff888112b9c000 RCX: ffff88810fe6d000 [ 67.274852][ T472] RDX: 0000000000000000 RSI: 00000000fffffff4 RDI: 0000000000000000 [ 67.283147][ T472] RBP: ffffc90000dc7b00 R08: 0000000000000015 R09: ffffffff84a000c5 [ 67.291168][ T472] R10: 0000000000000003 R11: 000000008ae260e1 R12: ffff888112b9c348 [ 67.299213][ T472] R13: ffff888112b9a000 R14: 00000000fffffff4 R15: ffff888112b9c068 [ 67.307213][ T472] FS: 0000555592d51500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 67.316161][ T472] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.322737][ T472] CR2: 0000001b33563fff CR3: 000000010ff0c000 CR4: 00000000003506a0 [ 67.330730][ T472] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.338805][ T472] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.346791][ T472] Call Trace: [ 67.350076][ T472] device_add_disk_no_queue_reg+0x21/0x30 [ 67.355806][ T472] dm_create+0x992/0xdd0 [ 67.360039][ T472] dev_create+0x12e/0x2c0 [ 67.364346][ T472] ? list_devices+0x570/0x570 [ 67.369041][ T472] ? __kasan_check_write+0x14/0x20 [ 67.374141][ T472] ? _copy_from_user+0x95/0xd0 [ 67.378911][ T472] dm_ctl_ioctl+0x8ee/0xca0 [ 67.383404][ T472] ? list_devices+0x570/0x570 [ 67.388091][ T472] ? dm_poll+0x120/0x120 [ 67.392332][ T472] ? security_file_ioctl+0x84/0xa0 [ 67.397450][ T472] ? dm_poll+0x120/0x120 [ 67.401709][ T472] __se_sys_ioctl+0x121/0x1a0 [ 67.406413][ T472] __x64_sys_ioctl+0x7b/0x90 [ 67.411004][ T472] do_syscall_64+0x31/0x40 [ 67.415434][ T472] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 67.421320][ T472] RIP: 0033:0x7fa7decc71d9 [ 67.425759][ T472] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 67.445393][ T472] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 67.453925][ T472] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 67.461911][ T472] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 67.469895][ T472] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 67.477886][ T472] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 67.485879][ T472] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 67.493832][ T472] ---[ end trace f390c9bb75184871 ]--- [ 67.504468][ T474] FAULT_INJECTION: forcing a failure. [ 67.504468][ T474] name failslab, interval 1, probability 0, space 0, times 0 [ 67.517181][ T474] CPU: 0 PID: 474 Comm: syz.2.50 Tainted: G W syzkaller #0 [ 67.525659][ T474] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 67.535718][ T474] Call Trace: [ 67.538994][ T474] __dump_stack+0x21/0x24 [ 67.543318][ T474] dump_stack_lvl+0x1a7/0x208 [ 67.547977][ T474] ? show_regs_print_info+0x18/0x18 [ 67.553171][ T474] dump_stack+0x15/0x1c [ 67.557305][ T474] should_fail+0x3ab/0x500 [ 67.561710][ T474] ? device_add+0xb9/0xc00 [ 67.566106][ T474] __should_failslab+0xa4/0xe0 [ 67.570851][ T474] should_failslab+0x9/0x20 [ 67.575334][ T474] kmem_cache_alloc_trace+0x3a/0x2e0 [ 67.580616][ T474] device_add+0xb9/0xc00 [ 67.584837][ T474] ? kobject_set_name_vargs+0xca/0x110 [ 67.590278][ T474] device_create+0x26c/0x300 [ 67.594848][ T474] ? root_device_unregister+0x80/0x80 [ 67.600197][ T474] ? vsnprintf+0x189d/0x1990 [ 67.604789][ T474] bdi_register_va+0x90/0x5f0 [ 67.609446][ T474] bdi_register+0xdf/0x130 [ 67.613842][ T474] ? __kasan_check_write+0x14/0x20 [ 67.618934][ T474] ? _raw_spin_lock+0x94/0xf0 [ 67.623598][ T474] ? bdi_register_va+0x5f0/0x5f0 [ 67.628516][ T474] ? hashlen_string+0x55/0x120 [ 67.633286][ T474] ? blk_alloc_devt+0xda/0x330 [ 67.638031][ T474] __device_add_disk+0x538/0x1010 [ 67.643037][ T474] device_add_disk_no_queue_reg+0x21/0x30 [ 67.648739][ T474] dm_create+0x992/0xdd0 [ 67.652981][ T474] dev_create+0x12e/0x2c0 [ 67.657293][ T474] ? list_devices+0x570/0x570 [ 67.661952][ T474] ? __kasan_check_write+0x14/0x20 [ 67.667041][ T474] ? _copy_from_user+0x95/0xd0 [ 67.671795][ T474] dm_ctl_ioctl+0x8ee/0xca0 [ 67.676277][ T474] ? list_devices+0x570/0x570 [ 67.680940][ T474] ? dm_poll+0x120/0x120 [ 67.685163][ T474] ? security_file_ioctl+0x84/0xa0 [ 67.690252][ T474] ? dm_poll+0x120/0x120 [ 67.694472][ T474] __se_sys_ioctl+0x121/0x1a0 [ 67.699128][ T474] __x64_sys_ioctl+0x7b/0x90 [ 67.703704][ T474] do_syscall_64+0x31/0x40 [ 67.708100][ T474] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 67.713969][ T474] RIP: 0033:0x7fa7decc71d9 [ 67.718362][ T474] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 67.738161][ T474] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 67.746643][ T474] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 67.754684][ T474] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 67.762636][ T474] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 67.770588][ T474] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 67.778544][ T474] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 67.786943][ T474] ------------[ cut here ]------------ [ 67.792413][ T474] WARNING: CPU: 0 PID: 474 at block/genhd.c:821 __device_add_disk+0xcf9/0x1010 [ 67.801375][ T474] Modules linked in: [ 67.805301][ T474] CPU: 0 PID: 474 Comm: syz.2.50 Tainted: G W syzkaller #0 [ 67.813781][ T474] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 67.823862][ T474] RIP: 0010:__device_add_disk+0xcf9/0x1010 [ 67.829686][ T474] Code: ff e8 fb 8a 31 ff 0f 0b e9 74 fe ff ff e8 ef 8a 31 ff 0f 0b e9 64 f4 ff ff e8 e3 8a 31 ff 0f 0b e9 a4 f9 ff ff e8 d7 8a 31 ff <0f> 0b e9 52 f8 ff ff e8 cb 8a 31 ff e9 77 fd ff ff e8 c1 8a 31 ff [ 67.849315][ T474] RSP: 0018:ffffc90000f57a78 EFLAGS: 00010293 [ 67.855405][ T474] RAX: ffffffff82332db9 RBX: ffff888112afe000 RCX: ffff888112ba9400 [ 67.863359][ T474] RDX: 0000000000000000 RSI: 00000000fffffff4 RDI: 0000000000000000 [ 67.871341][ T474] RBP: ffffc90000f57b00 R08: 0000000000000014 R09: ffffffff84a000c5 [ 67.879317][ T474] R10: 0000000000000001 R11: 000000009a0a5957 R12: ffff888112afe348 [ 67.887294][ T474] R13: ffff888112afc000 R14: 00000000fffffff4 R15: ffff888112afe068 [ 67.895294][ T474] FS: 0000555592d51500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 67.904205][ T474] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.911030][ T474] CR2: 0000001b33563fff CR3: 0000000110954000 CR4: 00000000003506b0 [ 67.919038][ T474] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.927175][ T474] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.935267][ T474] Call Trace: [ 67.938559][ T474] device_add_disk_no_queue_reg+0x21/0x30 [ 67.944275][ T474] dm_create+0x992/0xdd0 [ 67.948543][ T474] dev_create+0x12e/0x2c0 [ 67.952875][ T474] ? list_devices+0x570/0x570 [ 67.957575][ T474] ? __kasan_check_write+0x14/0x20 [ 67.963009][ T474] ? _copy_from_user+0x95/0xd0 [ 67.967820][ T474] dm_ctl_ioctl+0x8ee/0xca0 [ 67.972347][ T474] ? list_devices+0x570/0x570 [ 67.977035][ T474] ? dm_poll+0x120/0x120 [ 67.981282][ T474] ? security_file_ioctl+0x84/0xa0 [ 67.986399][ T474] ? dm_poll+0x120/0x120 [ 67.990638][ T474] __se_sys_ioctl+0x121/0x1a0 [ 67.995333][ T474] __x64_sys_ioctl+0x7b/0x90 [ 67.999918][ T474] do_syscall_64+0x31/0x40 [ 68.004317][ T474] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 68.010224][ T474] RIP: 0033:0x7fa7decc71d9 [ 68.014633][ T474] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 68.034265][ T474] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 68.042713][ T474] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 68.050713][ T474] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 68.058718][ T474] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 68.066707][ T474] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 68.074680][ T474] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 68.082798][ T474] ---[ end trace f390c9bb75184872 ]--- [ 68.093189][ T476] FAULT_INJECTION: forcing a failure. [ 68.093189][ T476] name failslab, interval 1, probability 0, space 0, times 0 [ 68.105826][ T476] CPU: 0 PID: 476 Comm: syz.2.51 Tainted: G W syzkaller #0 [ 68.114319][ T476] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 68.124356][ T476] Call Trace: [ 68.127632][ T476] __dump_stack+0x21/0x24 [ 68.131949][ T476] dump_stack_lvl+0x1a7/0x208 [ 68.136609][ T476] ? show_regs_print_info+0x18/0x18 [ 68.141788][ T476] dump_stack+0x15/0x1c [ 68.145932][ T476] should_fail+0x3ab/0x500 [ 68.150345][ T476] ? security_inode_alloc+0x33/0x110 [ 68.155613][ T476] __should_failslab+0xa4/0xe0 [ 68.160358][ T476] should_failslab+0x9/0x20 [ 68.164870][ T476] kmem_cache_alloc+0x3d/0x2d0 [ 68.169616][ T476] security_inode_alloc+0x33/0x110 [ 68.174709][ T476] inode_init_always+0x725/0x9c0 [ 68.179630][ T476] ? dax_init_fs_context+0x60/0x60 [ 68.184722][ T476] ? write_cache_store+0x1a0/0x1a0 [ 68.189840][ T476] iget5_locked+0xe0/0x270 [ 68.194237][ T476] ? dax_test+0x90/0x90 [ 68.198374][ T476] alloc_dax+0x14e/0x560 [ 68.202601][ T476] ? run_dax+0x30/0x30 [ 68.206654][ T476] ? device_initialize+0x1d6/0x410 [ 68.211765][ T476] ? __kasan_check_write+0x14/0x20 [ 68.216869][ T476] dm_create+0x8b5/0xdd0 [ 68.221115][ T476] dev_create+0x12e/0x2c0 [ 68.225439][ T476] ? list_devices+0x570/0x570 [ 68.230137][ T476] ? __kasan_check_write+0x14/0x20 [ 68.235239][ T476] ? _copy_from_user+0x95/0xd0 [ 68.239997][ T476] dm_ctl_ioctl+0x8ee/0xca0 [ 68.244500][ T476] ? list_devices+0x570/0x570 [ 68.249356][ T476] ? dm_poll+0x120/0x120 [ 68.253586][ T476] ? security_file_ioctl+0x84/0xa0 [ 68.258684][ T476] ? dm_poll+0x120/0x120 [ 68.262915][ T476] __se_sys_ioctl+0x121/0x1a0 [ 68.267577][ T476] __x64_sys_ioctl+0x7b/0x90 [ 68.272150][ T476] do_syscall_64+0x31/0x40 [ 68.276551][ T476] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 68.282425][ T476] RIP: 0033:0x7fa7decc71d9 [ 68.286830][ T476] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 68.306416][ T476] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 68.314810][ T476] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 68.322787][ T476] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 68.330774][ T476] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 68.338756][ T476] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 68.346722][ T476] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 68.356022][ T476] ------------[ cut here ]------------ [ 68.361499][ T476] kernfs: can not remove 'events', no directory [ 68.367815][ T476] WARNING: CPU: 0 PID: 476 at fs/kernfs/dir.c:1588 kernfs_remove_by_name_ns+0x103/0x160 [ 68.377535][ T476] Modules linked in: [ 68.381421][ T476] CPU: 0 PID: 476 Comm: syz.2.51 Tainted: G W syzkaller #0 [ 68.389930][ T476] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 68.400008][ T476] RIP: 0010:kernfs_remove_by_name_ns+0x103/0x160 [ 68.406346][ T476] Code: 06 4c 89 f7 e8 fe ee ff ff 4c 89 f7 e8 86 af ff ff 45 31 f6 eb 29 e8 bc 1d 9d ff 48 c7 c7 40 3c 2b 85 4c 89 f6 e8 fd 12 b2 02 <0f> 0b 41 be fe ff ff ff eb 13 e8 9e 1d 9d ff 41 be fe ff ff ff 48 [ 68.425965][ T476] RSP: 0018:ffffc90000ff7a10 EFLAGS: 00010246 [ 68.432013][ T476] RAX: 0581ef4911e7ae00 RBX: 0000000000000001 RCX: ffff888112bad000 [ 68.439998][ T476] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 68.447984][ T476] RBP: ffffc90000ff7a38 R08: ffffc90000ff73a7 R09: fffff520001feea8 [ 68.455980][ T476] R10: dffffc0000000000 R11: fffff520001fee75 R12: 0000000000000000 [ 68.463949][ T476] R13: ffffffff8674efc0 R14: ffffffff853fc620 R15: 0000000000000000 [ 68.471998][ T476] FS: 0000555592d51500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 68.480957][ T476] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 68.487620][ T476] CR2: 0000001b33563fff CR3: 00000001102a0000 CR4: 00000000003506b0 [ 68.495757][ T476] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 68.503787][ T476] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 68.511805][ T476] Call Trace: [ 68.515099][ T476] sysfs_remove_files+0xa4/0x100 [ 68.520068][ T476] del_gendisk+0x254/0xa10 [ 68.524483][ T476] cleanup_mapped_device+0x16c/0x270 [ 68.529780][ T476] dm_create+0xb03/0xdd0 [ 68.534013][ T476] dev_create+0x12e/0x2c0 [ 68.538489][ T476] ? list_devices+0x570/0x570 [ 68.543174][ T476] ? __kasan_check_write+0x14/0x20 [ 68.548345][ T476] ? _copy_from_user+0x95/0xd0 [ 68.553115][ T476] dm_ctl_ioctl+0x8ee/0xca0 [ 68.557640][ T476] ? list_devices+0x570/0x570 [ 68.562320][ T476] ? dm_poll+0x120/0x120 [ 68.566592][ T476] ? security_file_ioctl+0x84/0xa0 [ 68.571702][ T476] ? dm_poll+0x120/0x120 [ 68.575956][ T476] __se_sys_ioctl+0x121/0x1a0 [ 68.580632][ T476] __x64_sys_ioctl+0x7b/0x90 [ 68.585204][ T476] do_syscall_64+0x31/0x40 [ 68.589627][ T476] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 68.595532][ T476] RIP: 0033:0x7fa7decc71d9 [ 68.599929][ T476] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 68.619568][ T476] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 68.628001][ T476] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 68.636013][ T476] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 68.643978][ T476] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 68.651987][ T476] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 68.659967][ T476] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 68.667953][ T476] ---[ end trace f390c9bb75184873 ]--- [ 68.673395][ T476] ------------[ cut here ]------------ [ 68.678875][ T476] kernfs: can not remove 'events_async', no directory [ 68.685707][ T476] WARNING: CPU: 0 PID: 476 at fs/kernfs/dir.c:1588 kernfs_remove_by_name_ns+0x103/0x160 [ 68.695420][ T476] Modules linked in: [ 68.699311][ T476] CPU: 0 PID: 476 Comm: syz.2.51 Tainted: G W syzkaller #0 [ 68.707816][ T476] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 68.717888][ T476] RIP: 0010:kernfs_remove_by_name_ns+0x103/0x160 [ 68.724196][ T476] Code: 06 4c 89 f7 e8 fe ee ff ff 4c 89 f7 e8 86 af ff ff 45 31 f6 eb 29 e8 bc 1d 9d ff 48 c7 c7 40 3c 2b 85 4c 89 f6 e8 fd 12 b2 02 <0f> 0b 41 be fe ff ff ff eb 13 e8 9e 1d 9d ff 41 be fe ff ff ff 48 [ 68.743827][ T476] RSP: 0018:ffffc90000ff7a10 EFLAGS: 00010246 [ 68.750009][ T476] RAX: 0581ef4911e7ae00 RBX: 0000000000000002 RCX: ffff888112bad000 [ 68.757990][ T476] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 68.765974][ T476] RBP: ffffc90000ff7a38 R08: ffff8881f7052fff R09: 1ffff1103ee0a5ff [ 68.773927][ T476] R10: dffffc0000000000 R11: ffffed103ee0a600 R12: 0000000000000000 [ 68.781906][ T476] R13: ffffffff8674efc0 R14: ffffffff853fc700 R15: 0000000000000000 [ 68.789902][ T476] FS: 0000555592d51500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 68.798854][ T476] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 68.805452][ T476] CR2: 0000001b33563fff CR3: 00000001102a0000 CR4: 00000000003506b0 [ 68.813408][ T476] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 68.821463][ T476] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 68.829478][ T476] Call Trace: [ 68.832757][ T476] sysfs_remove_files+0xa4/0x100 [ 68.837719][ T476] del_gendisk+0x254/0xa10 [ 68.842131][ T476] cleanup_mapped_device+0x16c/0x270 [ 68.847442][ T476] dm_create+0xb03/0xdd0 [ 68.851678][ T476] dev_create+0x12e/0x2c0 [ 68.856027][ T476] ? list_devices+0x570/0x570 [ 68.860735][ T476] ? __kasan_check_write+0x14/0x20 [ 68.865911][ T476] ? _copy_from_user+0x95/0xd0 [ 68.870675][ T476] dm_ctl_ioctl+0x8ee/0xca0 [ 68.875161][ T476] ? list_devices+0x570/0x570 [ 68.879857][ T476] ? dm_poll+0x120/0x120 [ 68.884118][ T476] ? security_file_ioctl+0x84/0xa0 [ 68.889252][ T476] ? dm_poll+0x120/0x120 [ 68.893489][ T476] __se_sys_ioctl+0x121/0x1a0 [ 68.898187][ T476] __x64_sys_ioctl+0x7b/0x90 [ 68.902777][ T476] do_syscall_64+0x31/0x40 [ 68.907247][ T476] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 68.913148][ T476] RIP: 0033:0x7fa7decc71d9 [ 68.917594][ T476] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 68.937215][ T476] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 68.945670][ T476] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 68.953638][ T476] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 68.961636][ T476] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 68.969638][ T476] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 68.977638][ T476] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 68.985640][ T476] ---[ end trace f390c9bb75184874 ]--- [ 68.991077][ T476] ------------[ cut here ]------------ [ 68.996557][ T476] kernfs: can not remove 'events_poll_msecs', no directory [ 69.003817][ T476] WARNING: CPU: 0 PID: 476 at fs/kernfs/dir.c:1588 kernfs_remove_by_name_ns+0x103/0x160 [ 69.013557][ T476] Modules linked in: [ 69.017487][ T476] CPU: 0 PID: 476 Comm: syz.2.51 Tainted: G W syzkaller #0 [ 69.025990][ T476] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 69.036093][ T476] RIP: 0010:kernfs_remove_by_name_ns+0x103/0x160 [ 69.042599][ T476] Code: 06 4c 89 f7 e8 fe ee ff ff 4c 89 f7 e8 86 af ff ff 45 31 f6 eb 29 e8 bc 1d 9d ff 48 c7 c7 40 3c 2b 85 4c 89 f6 e8 fd 12 b2 02 <0f> 0b 41 be fe ff ff ff eb 13 e8 9e 1d 9d ff 41 be fe ff ff ff 48 [ 69.062228][ T476] RSP: 0018:ffffc90000ff7a10 EFLAGS: 00010246 [ 69.068329][ T476] RAX: 0581ef4911e7ae00 RBX: 0000000000000003 RCX: ffff888112bad000 [ 69.076318][ T476] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 69.084287][ T476] RBP: ffffc90000ff7a38 R08: ffff8881f7052fff R09: 1ffff1103ee0a5ff [ 69.092280][ T476] R10: dffffc0000000000 R11: ffffed103ee0a600 R12: 0000000000000000 [ 69.100271][ T476] R13: ffffffff8674efc0 R14: ffffffff853fc760 R15: 0000000000000000 [ 69.108282][ T476] FS: 0000555592d51500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 69.117226][ T476] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 69.123789][ T476] CR2: 0000001b33563fff CR3: 00000001102a0000 CR4: 00000000003506b0 [ 69.131776][ T476] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 69.139754][ T476] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 69.147750][ T476] Call Trace: [ 69.151035][ T476] sysfs_remove_files+0xa4/0x100 [ 69.156051][ T476] del_gendisk+0x254/0xa10 [ 69.160479][ T476] cleanup_mapped_device+0x16c/0x270 [ 69.165779][ T476] dm_create+0xb03/0xdd0 [ 69.170022][ T476] dev_create+0x12e/0x2c0 [ 69.174352][ T476] ? list_devices+0x570/0x570 [ 69.179044][ T476] ? __kasan_check_write+0x14/0x20 [ 69.184156][ T476] ? _copy_from_user+0x95/0xd0 [ 69.188935][ T476] dm_ctl_ioctl+0x8ee/0xca0 [ 69.193434][ T476] ? list_devices+0x570/0x570 [ 69.198114][ T476] ? dm_poll+0x120/0x120 [ 69.202354][ T476] ? security_file_ioctl+0x84/0xa0 [ 69.207473][ T476] ? dm_poll+0x120/0x120 [ 69.211711][ T476] __se_sys_ioctl+0x121/0x1a0 [ 69.216405][ T476] __x64_sys_ioctl+0x7b/0x90 [ 69.220989][ T476] do_syscall_64+0x31/0x40 [ 69.225420][ T476] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 69.231308][ T476] RIP: 0033:0x7fa7decc71d9 [ 69.235762][ T476] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 69.255391][ T476] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 69.263787][ T476] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 69.271773][ T476] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 69.279760][ T476] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 69.288086][ T476] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 69.296079][ T476] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 69.304054][ T476] ---[ end trace f390c9bb75184875 ]--- [ 69.309589][ T476] ------------[ cut here ]------------ [ 69.315031][ T476] kernfs: can not remove 'bdi', no directory [ 69.321116][ T476] WARNING: CPU: 0 PID: 476 at fs/kernfs/dir.c:1588 kernfs_remove_by_name_ns+0x103/0x160 [ 69.331012][ T476] Modules linked in: [ 69.334915][ T476] CPU: 0 PID: 476 Comm: syz.2.51 Tainted: G W syzkaller #0 [ 69.343432][ T476] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 69.353508][ T476] RIP: 0010:kernfs_remove_by_name_ns+0x103/0x160 [ 69.359846][ T476] Code: 06 4c 89 f7 e8 fe ee ff ff 4c 89 f7 e8 86 af ff ff 45 31 f6 eb 29 e8 bc 1d 9d ff 48 c7 c7 40 3c 2b 85 4c 89 f6 e8 fd 12 b2 02 <0f> 0b 41 be fe ff ff ff eb 13 e8 9e 1d 9d ff 41 be fe ff ff ff 48 [ 69.379481][ T476] RSP: 0018:ffffc90000ff7a30 EFLAGS: 00010246 [ 69.385566][ T476] RAX: 0581ef4911e7ae00 RBX: ffffffff853fc040 RCX: ffff888112bad000 [ 69.393537][ T476] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 69.401537][ T476] RBP: ffffc90000ff7a58 R08: ffffc90000ff73c7 R09: fffff520001feeac [ 69.409641][ T476] R10: dffffc0000000000 R11: fffff520001fee79 R12: 0000000000000000 [ 69.417610][ T476] R13: 1ffff1102210bc8f R14: ffffffff853fc040 R15: 0000000000000000 [ 69.425767][ T476] FS: 0000555592d51500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 69.434740][ T476] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 69.441377][ T476] CR2: 000011bf692ec020 CR3: 00000001102a0000 CR4: 00000000003506a0 [ 69.449459][ T476] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 69.457481][ T476] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 69.465462][ T476] Call Trace: [ 69.468760][ T476] sysfs_remove_link+0x50/0x60 [ 69.473502][ T476] del_gendisk+0x3f8/0xa10 [ 69.478039][ T476] cleanup_mapped_device+0x16c/0x270 [ 69.483335][ T476] dm_create+0xb03/0xdd0 [ 69.487600][ T476] dev_create+0x12e/0x2c0 [ 69.491924][ T476] ? list_devices+0x570/0x570 [ 69.496610][ T476] ? __kasan_check_write+0x14/0x20 [ 69.501716][ T476] ? _copy_from_user+0x95/0xd0 [ 69.506669][ T476] dm_ctl_ioctl+0x8ee/0xca0 [ 69.511167][ T476] ? list_devices+0x570/0x570 [ 69.515847][ T476] ? dm_poll+0x120/0x120 [ 69.520119][ T476] ? security_file_ioctl+0x84/0xa0 [ 69.525208][ T476] ? dm_poll+0x120/0x120 [ 69.529461][ T476] __se_sys_ioctl+0x121/0x1a0 [ 69.534130][ T476] __x64_sys_ioctl+0x7b/0x90 [ 69.538928][ T476] do_syscall_64+0x31/0x40 [ 69.543348][ T476] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 69.549260][ T476] RIP: 0033:0x7fa7decc71d9 [ 69.553668][ T476] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 69.573297][ T476] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 69.581734][ T476] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 69.589714][ T476] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 69.597694][ T476] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 69.605677][ T476] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 69.613644][ T476] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 69.621630][ T476] ---[ end trace f390c9bb75184876 ]--- [ 69.627171][ T476] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 69.638945][ T476] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 69.647352][ T476] CPU: 1 PID: 476 Comm: syz.2.51 Tainted: G W syzkaller #0 [ 69.655910][ T476] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 69.666338][ T476] RIP: 0010:strlen+0x29/0x70 [ 69.670908][ T476] Code: 00 55 48 89 e5 41 57 41 56 41 54 53 48 c7 c0 ff ff ff ff 49 be 00 00 00 00 00 fc ff df 48 89 fb 49 89 c7 48 89 d8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 75 11 48 ff c3 49 8d 47 01 42 80 7c 3f 01 00 [ 69.690500][ T476] RSP: 0018:ffffc90000ff79a8 EFLAGS: 00010246 [ 69.696557][ T476] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 69.704530][ T476] RDX: ffff888112bad000 RSI: 0000000000000000 RDI: 0000000000000000 [ 69.712497][ T476] RBP: ffffc90000ff79c8 R08: ffff888100059d77 R09: 1ffff1102000b3ae [ 69.720467][ T476] R10: dffffc0000000000 R11: ffffed102000b3af R12: ffff8881069a5680 [ 69.728417][ T476] R13: 0000000000000000 R14: dffffc0000000000 R15: ffffffffffffffff [ 69.736391][ T476] FS: 0000555592d51500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 69.745306][ T476] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 69.751873][ T476] CR2: 000011bf692ec020 CR3: 00000001102a0000 CR4: 00000000003506a0 [ 69.759849][ T476] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 69.767821][ T476] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 69.775771][ T476] Call Trace: [ 69.779063][ T476] kernfs_find_ns+0x95/0x4b0 [ 69.783633][ T476] kernfs_remove_by_name_ns+0x89/0x160 [ 69.789068][ T476] sysfs_remove_link+0x50/0x60 [ 69.793822][ T476] del_gendisk+0x84b/0xa10 [ 69.798234][ T476] cleanup_mapped_device+0x16c/0x270 [ 69.803498][ T476] dm_create+0xb03/0xdd0 [ 69.807719][ T476] dev_create+0x12e/0x2c0 [ 69.812031][ T476] ? list_devices+0x570/0x570 [ 69.816688][ T476] ? __kasan_check_write+0x14/0x20 [ 69.821780][ T476] ? _copy_from_user+0x95/0xd0 [ 69.826522][ T476] dm_ctl_ioctl+0x8ee/0xca0 [ 69.831011][ T476] ? list_devices+0x570/0x570 [ 69.835665][ T476] ? dm_poll+0x120/0x120 [ 69.839891][ T476] ? security_file_ioctl+0x84/0xa0 [ 69.844989][ T476] ? dm_poll+0x120/0x120 [ 69.849211][ T476] __se_sys_ioctl+0x121/0x1a0 [ 69.853870][ T476] __x64_sys_ioctl+0x7b/0x90 [ 69.858439][ T476] do_syscall_64+0x31/0x40 [ 69.862833][ T476] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 69.868788][ T476] RIP: 0033:0x7fa7decc71d9 [ 69.873185][ T476] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 69.892778][ T476] RSP: 002b:00007ffca0b19c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 69.901185][ T476] RAX: ffffffffffffffda RBX: 00007fa7def4efa0 RCX: 00007fa7decc71d9 [ 69.909246][ T476] RDX: 0000200000000000 RSI: 00000000c138fd03 RDI: 0000000000000003 [ 69.917221][ T476] RBP: 00007fa7ded5e888 R08: 0000000000000000 R09: 0000000000000000 [ 69.925268][ T476] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 69.933223][ T476] R13: 00007fa7def4efac R14: 00007fa7def4efa0 R15: 00007fa7def4efa0 [ 69.941260][ T476] Modules linked in: [ 69.945338][ T476] ---[ end trace f390c9bb75184877 ]--- [ 69.946497][ T24] kauditd_printk_skb: 34 callbacks suppressed [ 69.946508][ T24] audit: type=1400 audit(1791723798.809:108): avc: denied { read } for pid=77 comm="syslogd" name="log" dev="sda1" ino=2010 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass=lnk_file permissive=1 [ 69.950803][ T476] RIP: 0010:strlen+0x29/0x70 [ 69.950813][ T476] Code: 00 55 48 89 e5 41 57 41 56 41 54 53 48 c7 c0 ff ff ff ff 49 be 00 00 00 00 00 fc ff df 48 89 fb 49 89 c7 48 89 d8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 75 11 48 ff c3 49 8d 47 01 42 80 7c 3f 01 00 [ 69.950826][ T476] RSP: 0018:ffffc90000ff79a8 EFLAGS: 00010246 [ 69.959060][ T24] audit: type=1400 audit(1791723798.809:109): avc: denied { search } for pid=77 comm="syslogd" name="/" dev="tmpfs" ino=1 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 69.978681][ T476] [ 69.978691][ T476] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 69.978705][ T476] RDX: ffff888112bad000 RSI: 0000000000000000 RDI: 0000000000000000 [ 69.983618][ T24] audit: type=1400 audit(1791723798.809:110): avc: denied { write } for pid=77 comm="syslogd" name="/" dev="tmpfs" ino=1 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 70.002897][ T476] RBP: ffffc90000ff79c8 R08: ffff888100059d77 R09: 1ffff1102000b3ae [ 70.002904][ T476] R10: dffffc0000000000 R11: ffffed102000b3af R12: ffff8881069a5680 [ 70.002918][ T476] R13: 0000000000000000 R14: dffffc0000000000 R15: ffffffffffffffff [ 70.009061][ T24] audit: type=1400 audit(1791723798.809:111): avc: denied { add_name } for pid=77 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 70.048560][ T476] FS: 0000555592d51500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 70.070119][ T24] audit: type=1400 audit(1791723798.809:112): avc: denied { create } for pid=77 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 70.114518][ T476] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.114536][ T476] CR2: 000011bf692ec020 CR3: 00000001102a0000 CR4: 00000000003506a0 [ 70.123549][ T24] audit: type=1400 audit(1791723798.809:113): avc: denied { append open } for pid=77 comm="syslogd" path="/tmp/messages" dev="tmpfs" ino=5 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 70.144143][ T476] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.150593][ T24] audit: type=1400 audit(1791723798.809:114): avc: denied { getattr } for pid=77 comm="syslogd" path="/tmp/messages" dev="tmpfs" ino=5 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 70.158695][ T476] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.219912][ T476] Kernel panic - not syncing: Fatal exception [ 70.226211][ T476] Kernel Offset: disabled [ 70.230527][ T476] Rebooting in 86400 seconds..