program:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./cgroup.cpu/test\x00', 0x777)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./cgroup.cpu/test/memory.limit_in_bytes\x00', 0x2, 0x0)
write(r0, &(0x7f0000000380)='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)='./tracing\x00', 0x17f)
mount(0x0, &(0x7f00000002c0)='./tracing\x00', &(0x7f00000000c0)='tracefs\x00', 0x0, 0x0)
syz_open_dev$video(&(0x7f0000000000), 0x485, 0x40000)
madvise(&(0x7f0000000000/0xc00000)=nil, 0xc00000, 0x1)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./tracing/instances/inst1\x00', 0x1ff)
[ 110.484419][ T5278] Bluetooth: hci0: command tx timeout
[ 110.608332][ T5315] oom_control is deprecated and will be removed. Please report your usecase to linux-mm@kvack.org if you depend on this functionality.
[ 110.648044][ T5315] Could not create tracefs 'show_event_filters' entry
[ 110.662397][ T5315] Could not create tracefs 'show_event_triggers' entry
[ 110.679161][ T5315] Could not create tracefs 'set_event_pid' entry
[ 110.693510][ T5315] Could not create tracefs 'set_event_notrace_pid' entry
[ 110.705788][ T5315] ------------[ cut here ]------------
[ 110.708859][ T5315] !list_empty(&ei->children)
[ 110.708875][ T5315] WARNING: fs/tracefs/event_inode.c:128 at free_ei+0x284/0x340, CPU#0: syz.0.0/5315
[ 110.714431][ T5315] Modules linked in:
[ 110.716085][ T5315] CPU: 0 UID: 0 PID: 5315 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 110.719718][ T5315] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 110.723713][ T5315] RIP: 0010:free_ei+0x284/0x340
[ 110.725623][ T5315] 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
[ 110.733120][ T5315] RSP: 0018:ffffc9000e067a88 EFLAGS: 00010287
[ 110.735429][ T5315] RAX: ffffffff83df6b13 RBX: ffff888013925510 RCX: 0000000000100000
[ 110.738454][ T5315] RDX: ffffc9000eb7a000 RSI: 000000000009c3a2 RDI: 000000000009c3a3
[ 110.741434][ T5315] RBP: ffff888013925500 R08: 00000000ffffffff R09: 1ffffffff20f1f46
[ 110.744320][ T5315] R10: dffffc0000000000 R11: fffffbfff20f1f47 R12: 0000000000000000
[ 110.747159][ T5315] R13: ffff88801fca1000 R14: ffff888013925500 R15: 0000000000000003
[ 110.750118][ T5315] FS: 00007fe88ed446c0(0000) GS:ffff88808c30a000(0000) knlGS:0000000000000000
[ 110.753796][ T5315] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 110.756283][ T5315] CR2: 00007fe88dff36b8 CR3: 000000004345b000 CR4: 0000000000352ef0
[ 110.759089][ T5315] Call Trace:
[ 110.760238][ T5315]
[ 110.761383][ T5315] ? new_inode+0x13a/0x170
[ 110.762896][ T5315] ? tracefs_get_inode+0x11/0x80
[ 110.764706][ T5315] eventfs_create_events_dir+0x7c4/0x9f0
[ 110.766915][ T5315] create_event_toplevel_files+0x11e/0x1a0
[ 110.769177][ T5315] event_trace_add_tracer+0x8a/0x3b0
[ 110.771400][ T5315] trace_array_create_dir+0x77/0x160
[ 110.773362][ T5315] trace_array_create_systems+0xb3c/0xe60
[ 110.775777][ T5315] instance_mkdir+0xd5/0x140
[ 110.777777][ T5315] tracefs_syscall_mkdir+0x11a/0x190
[ 110.779878][ T5315] ? __pfx_tracefs_syscall_mkdir+0x10/0x10
[ 110.782468][ T5315] ? generic_permission+0x2bf/0x670
[ 110.784787][ T5315] ? bpf_lsm_inode_mkdir+0x9/0x20
[ 110.786930][ T5315] vfs_mkdir+0x40c/0x620
[ 110.788668][ T5315] filename_mkdirat+0x285/0x510
[ 110.790859][ T5315] ? __pfx_filename_mkdirat+0x10/0x10
[ 110.793015][ T5315] ? do_getname+0x151/0x250
[ 110.794834][ T5315] __se_sys_mkdirat+0x35/0x150
[ 110.796718][ T5315] do_syscall_64+0x166/0x520
[ 110.798693][ T5315] ? trace_irq_disable+0x3b/0x140
[ 110.800739][ T5315] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 110.803151][ T5315] ? clear_bhb_loop+0x70/0xc0
[ 110.805053][ T5315] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 110.807385][ T5315] RIP: 0033:0x7fe88dd9e0d9
[ 110.809145][ T5315] 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
[ 110.817224][ T5315] RSP: 002b:00007fe88ed43fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
[ 110.820887][ T5315] RAX: ffffffffffffffda RBX: 00007fe88e025fa0 RCX: 00007fe88dd9e0d9
[ 110.824309][ T5315] RDX: 00000000000001ff RSI: 0000200000000100 RDI: ffffffffffffff9c
[ 110.827669][ T5315] RBP: 00007fe88de35024 R08: 0000000000000000 R09: 0000000000000000
[ 110.831033][ T5315] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 110.834296][ T5315] R13: 00007fe88e026038 R14: 00007fe88e025fa0 R15: 00007ffc19662858
[ 110.837590][ T5315]
[ 110.838968][ T5315] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 110.842007][ T5315] CPU: 0 UID: 0 PID: 5315 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 110.845255][ T5315] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 110.849443][ T5315] Call Trace:
[ 110.850906][ T5315]
[ 110.852205][ T5315] vpanic+0x56d/0xa60
[ 110.853915][ T5315] ? __pfx__printk+0x10/0x10
[ 110.855841][ T5315] ? __pfx_vpanic+0x10/0x10
[ 110.857897][ T5315] ? is_bpf_text_address+0x292/0x2b0
[ 110.860178][ T5315] ? is_bpf_text_address+0x26/0x2b0
[ 110.862436][ T5315] panic+0xc5/0xd0
[ 110.864073][ T5315] ? __pfx_panic+0x10/0x10
[ 110.866050][ T5315] __warn+0x315/0x4c0
[ 110.867807][ T5315] ? free_ei+0x284/0x340
[ 110.869653][ T5315] ? free_ei+0x284/0x340
[ 110.871498][ T5315] __report_bug+0x276/0x570
[ 110.873419][ T5315] ? free_ei+0x284/0x340
[ 110.875244][ T5315] ? __pfx___report_bug+0x10/0x10
[ 110.877288][ T5315] ? kasan_quarantine_put+0xbb/0x1f0
[ 110.879406][ T5315] ? free_ei+0x284/0x340
[ 110.881102][ T5315] report_bug+0x16b/0x220
[ 110.882883][ T5315] ? free_ei+0x284/0x340
[ 110.884650][ T5315] ? free_ei+0x286/0x340
[ 110.886674][ T5315] handle_bug+0x9c/0x200
[ 110.888512][ T5315] exc_invalid_op+0x1a/0x50
[ 110.890494][ T5315] asm_exc_invalid_op+0x1a/0x20
[ 110.892590][ T5315] RIP: 0010:free_ei+0x284/0x340
[ 110.894741][ T5315] 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
[ 110.902811][ T5315] RSP: 0018:ffffc9000e067a88 EFLAGS: 00010287
[ 110.905434][ T5315] RAX: ffffffff83df6b13 RBX: ffff888013925510 RCX: 0000000000100000
[ 110.908625][ T5315] RDX: ffffc9000eb7a000 RSI: 000000000009c3a2 RDI: 000000000009c3a3
[ 110.912483][ T5315] RBP: ffff888013925500 R08: 00000000ffffffff R09: 1ffffffff20f1f46
[ 110.916251][ T5315] R10: dffffc0000000000 R11: fffffbfff20f1f47 R12: 0000000000000000
[ 110.920001][ T5315] R13: ffff88801fca1000 R14: ffff888013925500 R15: 0000000000000003
[ 110.923766][ T5315] ? free_ei+0x283/0x340
[ 110.925392][ T5315] ? free_ei+0x283/0x340
[ 110.927375][ T5315] ? new_inode+0x13a/0x170
[ 110.928915][ T5315] ? tracefs_get_inode+0x11/0x80
[ 110.930795][ T5315] eventfs_create_events_dir+0x7c4/0x9f0
[ 110.933141][ T5315] create_event_toplevel_files+0x11e/0x1a0
[ 110.935629][ T5315] event_trace_add_tracer+0x8a/0x3b0
[ 110.937882][ T5315] trace_array_create_dir+0x77/0x160
[ 110.940175][ T5315] trace_array_create_systems+0xb3c/0xe60
[ 110.942590][ T5315] instance_mkdir+0xd5/0x140
[ 110.944549][ T5315] tracefs_syscall_mkdir+0x11a/0x190
[ 110.947108][ T5315] ? __pfx_tracefs_syscall_mkdir+0x10/0x10
[ 110.949506][ T5315] ? generic_permission+0x2bf/0x670
[ 110.951670][ T5315] ? bpf_lsm_inode_mkdir+0x9/0x20
[ 110.953805][ T5315] vfs_mkdir+0x40c/0x620
[ 110.955606][ T5315] filename_mkdirat+0x285/0x510
[ 110.958026][ T5315] ? __pfx_filename_mkdirat+0x10/0x10
[ 110.960633][ T5315] ? do_getname+0x151/0x250
[ 110.962534][ T5315] __se_sys_mkdirat+0x35/0x150
[ 110.964602][ T5315] do_syscall_64+0x166/0x520
[ 110.966474][ T5315] ? trace_irq_disable+0x3b/0x140
[ 110.968550][ T5315] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 110.971030][ T5315] ? clear_bhb_loop+0x70/0xc0
[ 110.972889][ T5315] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 110.975226][ T5315] RIP: 0033:0x7fe88dd9e0d9
[ 110.977030][ T5315] 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
[ 110.984299][ T5315] RSP: 002b:00007fe88ed43fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
[ 110.987317][ T5315] RAX: ffffffffffffffda RBX: 00007fe88e025fa0 RCX: 00007fe88dd9e0d9
[ 110.990372][ T5315] RDX: 00000000000001ff RSI: 0000200000000100 RDI: ffffffffffffff9c
[ 110.993298][ T5315] RBP: 00007fe88de35024 R08: 0000000000000000 R09: 0000000000000000
[ 110.996361][ T5315] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 110.999738][ T5315] R13: 00007fe88e026038 R14: 00007fe88e025fa0 R15: 00007ffc19662858
[ 111.003061][ T5315]
[ 111.004848][ T5315] Kernel Offset: disabled
[ 111.006864][ T5315] Rebooting in 86400 seconds..