program:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.cpu/test\x00', 0x777)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./cgroup.cpu/test/memory.limit_in_bytes\x00', 0x2, 0x0)
write(r0, &(0x7f0000000180)='10000', 0x5)
r1 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./cgroup.cpu/test/memory.oom_control\x00', 0x2, 0x0)
write(r1, &(0x7f0000000200)='1', 0x1)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./cgroup.cpu/test/cgroup.procs\x00', 0x2, 0x0)
write(r2, &(0x7f0000000280)='0', 0x1)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)
ioctl$VIDIOC_G_DV_TIMINGS(r0, 0xc0845658, &(0x7f0000000080)={0x0, @bt={0xffff, 0x8, 0x0, 0x0, 0x0, 0xd, 0x9, 0x3, 0x5, 0x2203a5d0, 0x1, 0x7, 0x1ff, 0xfffffff9, 0x6, 0x21, {0x7, 0xa812}, 0x0, 0x4}})
[ 95.060107][ T4641] Bluetooth: hci0: command tx timeout
[ 95.156589][ T5319] oom_control is deprecated and will be removed. Please report your usecase to linux-mm@kvack.org if you depend on this functionality.
[ 95.213543][ T5319] Could not create tracefs 'show_event_triggers' entry
[ 95.220543][ T5319] Could not create tracefs 'set_event_pid' entry
[ 95.228090][ T5319] Could not create tracefs 'set_event_notrace_pid' entry
[ 95.238046][ T5319] ------------[ cut here ]------------
[ 95.240812][ T5319] !list_empty(&ei->children)
[ 95.240825][ T5319] WARNING: fs/tracefs/event_inode.c:128 at free_ei+0x284/0x340, CPU#0: syz.0.0/5319
[ 95.247418][ T5319] Modules linked in:
[ 95.249549][ T5319] CPU: 0 UID: 0 PID: 5319 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 95.253194][ T5319] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 95.257437][ T5319] RIP: 0010:free_ei+0x284/0x340
[ 95.259562][ T5319] Code: 48 c7 c7 20 87 32 8f 48 89 de 48 c7 c2 80 67 df 83 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d e9 72 dd cb fd e8 ad c9 e7 fd 90 <0f> 0b 90 e9 c7 fd ff ff e8 9f c9 e7 fd 90 0f 0b 90 48 b8 00 00 00
[ 95.267762][ T5319] RSP: 0018:ffffc9000efefa88 EFLAGS: 00010283
[ 95.270577][ T5319] RAX: ffffffff83df6b13 RBX: ffff888042cf6e10 RCX: 0000000000100000
[ 95.273891][ T5319] RDX: ffffc9000e752000 RSI: 0000000000074d78 RDI: 0000000000074d79
[ 95.277253][ T5319] RBP: ffff888042cf6e00 R08: 00000000ffffffff R09: 1ffffffff20f1f46
[ 95.280619][ T5319] R10: dffffc0000000000 R11: fffffbfff20f1f47 R12: 0000000000000000
[ 95.283896][ T5319] R13: ffff888052481000 R14: ffff888042cf6e00 R15: 0000000000000003
[ 95.287246][ T5319] FS: 00007f448aaed6c0(0000) GS:ffff88808c30a000(0000) knlGS:0000000000000000
[ 95.290904][ T5319] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 95.293406][ T5319] CR2: 000055f492d31574 CR3: 00000000423ee000 CR4: 0000000000352ef0
[ 95.296770][ T5319] Call Trace:
[ 95.298146][ T5319]
[ 95.299421][ T5319] ? new_inode+0x13a/0x170
[ 95.301721][ T5319] ? tracefs_get_inode+0x11/0x80
[ 95.304165][ T5319] eventfs_create_events_dir+0x7c4/0x9f0
[ 95.306547][ T5319] create_event_toplevel_files+0x11e/0x1a0
[ 95.308979][ T5319] event_trace_add_tracer+0x8a/0x3b0
[ 95.310938][ T5319] trace_array_create_dir+0x77/0x160
[ 95.312927][ T5319] trace_array_create_systems+0xb3c/0xe60
[ 95.315065][ T5319] instance_mkdir+0xd5/0x140
[ 95.316864][ T5319] tracefs_syscall_mkdir+0x11a/0x190
[ 95.318926][ T5319] ? __pfx_tracefs_syscall_mkdir+0x10/0x10
[ 95.321426][ T5319] ? generic_permission+0x2bf/0x670
[ 95.323586][ T5319] ? bpf_lsm_inode_mkdir+0x9/0x20
[ 95.325631][ T5319] vfs_mkdir+0x40c/0x620
[ 95.327242][ T5319] filename_mkdirat+0x285/0x510
[ 95.329128][ T5319] ? __pfx_filename_mkdirat+0x10/0x10
[ 95.331436][ T5319] ? do_getname+0x151/0x250
[ 95.333469][ T5319] __se_sys_mkdirat+0x35/0x150
[ 95.335604][ T5319] do_syscall_64+0x166/0x520
[ 95.337578][ T5319] ? trace_irq_disable+0x3b/0x140
[ 95.339847][ T5319] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 95.342436][ T5319] ? clear_bhb_loop+0x70/0xc0
[ 95.344299][ T5319] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 95.346825][ T5319] RIP: 0033:0x7f4489b9e0d9
[ 95.348807][ T5319] 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
[ 95.356896][ T5319] RSP: 002b:00007f448aaecfe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
[ 95.360622][ T5319] RAX: ffffffffffffffda RBX: 00007f4489e25fa0 RCX: 00007f4489b9e0d9
[ 95.364056][ T5319] RDX: 00000000000001ff RSI: 0000200000000140 RDI: ffffffffffffff9c
[ 95.367359][ T5319] RBP: 00007f4489c35024 R08: 0000000000000000 R09: 0000000000000000
[ 95.371543][ T5319] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 95.375834][ T5319] R13: 00007f4489e26038 R14: 00007f4489e25fa0 R15: 00007ffc22f9a978
[ 95.379349][ T5319]
[ 95.380755][ T5319] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 95.383808][ T5319] CPU: 0 UID: 0 PID: 5319 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 95.387643][ T5319] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 95.392039][ T5319] Call Trace:
[ 95.393480][ T5319]
[ 95.394777][ T5319] vpanic+0x56d/0xa60
[ 95.396390][ T5319] ? __pfx__printk+0x10/0x10
[ 95.398296][ T5319] ? __pfx_vpanic+0x10/0x10
[ 95.400222][ T5319] ? is_bpf_text_address+0x292/0x2b0
[ 95.402425][ T5319] ? is_bpf_text_address+0x26/0x2b0
[ 95.404417][ T5319] panic+0xc5/0xd0
[ 95.405886][ T5319] ? __pfx_panic+0x10/0x10
[ 95.407662][ T5319] __warn+0x315/0x4c0
[ 95.409205][ T5319] ? free_ei+0x284/0x340
[ 95.410949][ T5319] ? free_ei+0x284/0x340
[ 95.412680][ T5319] __report_bug+0x276/0x570
[ 95.414421][ T5319] ? free_ei+0x284/0x340
[ 95.416141][ T5319] ? __pfx___report_bug+0x10/0x10
[ 95.418181][ T5319] ? kasan_quarantine_put+0xbb/0x1f0
[ 95.420316][ T5319] ? free_ei+0x284/0x340
[ 95.421935][ T5319] report_bug+0x16b/0x220
[ 95.424273][ T5319] ? free_ei+0x284/0x340
[ 95.425864][ T5319] ? free_ei+0x286/0x340
[ 95.427483][ T5319] handle_bug+0x9c/0x200
[ 95.429112][ T5319] exc_invalid_op+0x1a/0x50
[ 95.431039][ T5319] asm_exc_invalid_op+0x1a/0x20
[ 95.433170][ T5319] RIP: 0010:free_ei+0x284/0x340
[ 95.435288][ T5319] Code: 48 c7 c7 20 87 32 8f 48 89 de 48 c7 c2 80 67 df 83 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d e9 72 dd cb fd e8 ad c9 e7 fd 90 <0f> 0b 90 e9 c7 fd ff ff e8 9f c9 e7 fd 90 0f 0b 90 48 b8 00 00 00
[ 95.443207][ T5319] RSP: 0018:ffffc9000efefa88 EFLAGS: 00010283
[ 95.445824][ T5319] RAX: ffffffff83df6b13 RBX: ffff888042cf6e10 RCX: 0000000000100000
[ 95.449233][ T5319] RDX: ffffc9000e752000 RSI: 0000000000074d78 RDI: 0000000000074d79
[ 95.452652][ T5319] RBP: ffff888042cf6e00 R08: 00000000ffffffff R09: 1ffffffff20f1f46
[ 95.455882][ T5319] R10: dffffc0000000000 R11: fffffbfff20f1f47 R12: 0000000000000000
[ 95.459244][ T5319] R13: ffff888052481000 R14: ffff888042cf6e00 R15: 0000000000000003
[ 95.462663][ T5319] ? free_ei+0x283/0x340
[ 95.464529][ T5319] ? free_ei+0x283/0x340
[ 95.466372][ T5319] ? new_inode+0x13a/0x170
[ 95.468235][ T5319] ? tracefs_get_inode+0x11/0x80
[ 95.470326][ T5319] eventfs_create_events_dir+0x7c4/0x9f0
[ 95.472667][ T5319] create_event_toplevel_files+0x11e/0x1a0
[ 95.474979][ T5319] event_trace_add_tracer+0x8a/0x3b0
[ 95.477115][ T5319] trace_array_create_dir+0x77/0x160
[ 95.479209][ T5319] trace_array_create_systems+0xb3c/0xe60
[ 95.481464][ T5319] instance_mkdir+0xd5/0x140
[ 95.483354][ T5319] tracefs_syscall_mkdir+0x11a/0x190
[ 95.485442][ T5319] ? __pfx_tracefs_syscall_mkdir+0x10/0x10
[ 95.487722][ T5319] ? generic_permission+0x2bf/0x670
[ 95.489839][ T5319] ? bpf_lsm_inode_mkdir+0x9/0x20
[ 95.491827][ T5319] vfs_mkdir+0x40c/0x620
[ 95.493590][ T5319] filename_mkdirat+0x285/0x510
[ 95.495627][ T5319] ? __pfx_filename_mkdirat+0x10/0x10
[ 95.497798][ T5319] ? do_getname+0x151/0x250
[ 95.499761][ T5319] __se_sys_mkdirat+0x35/0x150
[ 95.501745][ T5319] do_syscall_64+0x166/0x520
[ 95.503688][ T5319] ? trace_irq_disable+0x3b/0x140
[ 95.505786][ T5319] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 95.508355][ T5319] ? clear_bhb_loop+0x70/0xc0
[ 95.510391][ T5319] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 95.512647][ T5319] RIP: 0033:0x7f4489b9e0d9
[ 95.514459][ T5319] 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
[ 95.522290][ T5319] RSP: 002b:00007f448aaecfe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
[ 95.525729][ T5319] RAX: ffffffffffffffda RBX: 00007f4489e25fa0 RCX: 00007f4489b9e0d9
[ 95.528975][ T5319] RDX: 00000000000001ff RSI: 0000200000000140 RDI: ffffffffffffff9c
[ 95.532317][ T5319] RBP: 00007f4489c35024 R08: 0000000000000000 R09: 0000000000000000
[ 95.535681][ T5319] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 95.538955][ T5319] R13: 00007f4489e26038 R14: 00007f4489e25fa0 R15: 00007ffc22f9a978
[ 95.542421][ T5319]
[ 95.544136][ T5319] Kernel Offset: disabled
[ 95.545869][ T5319] Rebooting in 86400 seconds..