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', 0x1ff)
mount(0x0, &(0x7f0000000080)='./tracing\x00', &(0x7f00000000c0)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./tracing/instances/inst1\x00', 0x1ff)
[ 94.290223][ T5274] Bluetooth: hci0: command tx timeout
[ 94.432436][ T5311] oom_control is deprecated and will be removed. Please report your usecase to linux-mm-@kvack.org if you depend on this functionality.
[ 94.503433][ T5311] Could not create tracefs 'show_event_triggers' entry
[ 94.528937][ T5311] Could not create tracefs 'set_event_pid' entry
[ 94.548665][ T5311] Could not create tracefs 'set_event_notrace_pid' entry
[ 94.578968][ T5311] ------------[ cut here ]------------
[ 94.582836][ T5311] !list_empty(&ei->children)
[ 94.582857][ T5311] WARNING: fs/tracefs/event_inode.c:128 at free_ei+0x284/0x340, CPU#0: syz.0.0/5311
[ 94.590226][ T5311] Modules linked in:
[ 94.593253][ T5311] CPU: 0 UID: 0 PID: 5311 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 94.598163][ T5311] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 94.603504][ T5311] RIP: 0010:free_ei+0x284/0x340
[ 94.606029][ T5311] Code: 48 c7 c7 c0 e3 11 8f 48 89 de 48 c7 c2 80 6d da 83 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d e9 92 ea d0 fd e8 9d a0 ec fd 90 <0f> 0b 90 e9 c7 fd ff ff e8 8f a0 ec fd 90 0f 0b 90 48 b8 00 00 00
[ 94.614184][ T5311] RSP: 0018:ffffc9000f3f7a88 EFLAGS: 00010283
[ 94.617204][ T5311] RAX: ffffffff83da7113 RBX: ffff8880123dfc90 RCX: 0000000000100000
[ 94.620883][ T5311] RDX: ffffc9000eb2a000 RSI: 0000000000079585 RDI: 0000000000079586
[ 94.625138][ T5311] RBP: ffff8880123dfc80 R08: 00000000ffffffff R09: 1ffffffff20aee06
[ 94.629127][ T5311] R10: dffffc0000000000 R11: fffffbfff20aee07 R12: 0000000000000000
[ 94.632432][ T5311] R13: ffff88805281c800 R14: ffff8880123dfc80 R15: 0000000000000003
[ 94.636231][ T5311] FS: 00007f1def3526c0(0000) GS:ffff88808c547000(0000) knlGS:0000000000000000
[ 94.640980][ T5311] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 94.644534][ T5311] CR2: 00007f1dee5f36b8 CR3: 0000000012ec3000 CR4: 0000000000352ef0
[ 94.648108][ T5311] Call Trace:
[ 94.649621][ T5311]
[ 94.651064][ T5311] ? new_inode+0x13a/0x170
[ 94.653545][ T5311] ? tracefs_get_inode+0x11/0x80
[ 94.656215][ T5311] eventfs_create_events_dir+0x7c4/0x9f0
[ 94.658810][ T5311] create_event_toplevel_files+0x11e/0x1a0
[ 94.661438][ T5311] event_trace_add_tracer+0x8a/0x3b0
[ 94.664188][ T5311] trace_array_create_dir+0x77/0x160
[ 94.666696][ T5311] trace_array_create_systems+0xb3c/0xe60
[ 94.669073][ T5311] instance_mkdir+0xd5/0x140
[ 94.671279][ T5311] tracefs_syscall_mkdir+0x11a/0x190
[ 94.673926][ T5311] ? __pfx_tracefs_syscall_mkdir+0x10/0x10
[ 94.676681][ T5311] ? generic_permission+0x2bf/0x670
[ 94.679042][ T5311] ? bpf_lsm_inode_mkdir+0x9/0x20
[ 94.681569][ T5311] vfs_mkdir+0x406/0x620
[ 94.683787][ T5311] filename_mkdirat+0x285/0x510
[ 94.686236][ T5311] ? __pfx_filename_mkdirat+0x10/0x10
[ 94.689389][ T5311] ? do_getname+0x151/0x250
[ 94.691503][ T5311] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 94.695652][ T5311] __se_sys_mkdirat+0x35/0x150
[ 94.698136][ T5311] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 94.701418][ T5311] do_syscall_64+0x174/0x580
[ 94.703843][ T5311] ? trace_irq_disable+0x3b/0x140
[ 94.706158][ T5311] ? clear_bhb_loop+0x70/0xc0
[ 94.708373][ T5311] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 94.710515][ T5311] RIP: 0033:0x7f1dee39e0d9
[ 94.712676][ T5311] 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
[ 94.720896][ T5311] RSP: 002b:00007f1def351fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
[ 94.724785][ T5311] RAX: ffffffffffffffda RBX: 00007f1dee625fa0 RCX: 00007f1dee39e0d9
[ 94.728462][ T5311] RDX: 00000000000001ff RSI: 0000200000000100 RDI: ffffffffffffff9c
[ 94.732146][ T5311] RBP: 00007f1dee435024 R08: 0000000000000000 R09: 0000000000000000
[ 94.736703][ T5311] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 94.740455][ T5311] R13: 00007f1dee626038 R14: 00007f1dee625fa0 R15: 00007ffd83127cf8
[ 94.743953][ T5311]
[ 94.745375][ T5311] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 94.748560][ T5311] CPU: 0 UID: 0 PID: 5311 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 94.752498][ T5311] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 94.757774][ T5311] Call Trace:
[ 94.759386][ T5311]
[ 94.760763][ T5311] vpanic+0x56c/0xa60
[ 94.762573][ T5311] ? __pfx__printk+0x10/0x10
[ 94.764749][ T5311] ? __pfx_vpanic+0x10/0x10
[ 94.766776][ T5311] ? is_bpf_text_address+0x292/0x2b0
[ 94.769163][ T5311] ? is_bpf_text_address+0x26/0x2b0
[ 94.771603][ T5311] panic+0xc5/0xd0
[ 94.773419][ T5311] ? __pfx_panic+0x10/0x10
[ 94.775238][ T5311] __warn+0x315/0x4c0
[ 94.777174][ T5311] ? free_ei+0x284/0x340
[ 94.779191][ T5311] ? free_ei+0x284/0x340
[ 94.781177][ T5311] __report_bug+0x276/0x570
[ 94.783203][ T5311] ? free_ei+0x284/0x340
[ 94.784849][ T5311] ? __pfx___report_bug+0x10/0x10
[ 94.787270][ T5311] ? kasan_quarantine_put+0xbb/0x1f0
[ 94.789623][ T5311] ? free_ei+0x284/0x340
[ 94.791691][ T5311] report_bug+0x16a/0x220
[ 94.794449][ T5311] ? free_ei+0x284/0x340
[ 94.796813][ T5311] ? free_ei+0x286/0x340
[ 94.798992][ T5311] handle_bug+0x9c/0x200
[ 94.801259][ T5311] exc_invalid_op+0x1a/0x50
[ 94.803598][ T5311] asm_exc_invalid_op+0x1a/0x20
[ 94.805842][ T5311] RIP: 0010:free_ei+0x284/0x340
[ 94.808099][ T5311] Code: 48 c7 c7 c0 e3 11 8f 48 89 de 48 c7 c2 80 6d da 83 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d e9 92 ea d0 fd e8 9d a0 ec fd 90 <0f> 0b 90 e9 c7 fd ff ff e8 8f a0 ec fd 90 0f 0b 90 48 b8 00 00 00
[ 94.818567][ T5311] RSP: 0018:ffffc9000f3f7a88 EFLAGS: 00010283
[ 94.821543][ T5311] RAX: ffffffff83da7113 RBX: ffff8880123dfc90 RCX: 0000000000100000
[ 94.824909][ T5311] RDX: ffffc9000eb2a000 RSI: 0000000000079585 RDI: 0000000000079586
[ 94.828261][ T5311] RBP: ffff8880123dfc80 R08: 00000000ffffffff R09: 1ffffffff20aee06
[ 94.832386][ T5311] R10: dffffc0000000000 R11: fffffbfff20aee07 R12: 0000000000000000
[ 94.835827][ T5311] R13: ffff88805281c800 R14: ffff8880123dfc80 R15: 0000000000000003
[ 94.838990][ T5311] ? free_ei+0x283/0x340
[ 94.840833][ T5311] ? free_ei+0x283/0x340
[ 94.843051][ T5311] ? new_inode+0x13a/0x170
[ 94.845588][ T5311] ? tracefs_get_inode+0x11/0x80
[ 94.848371][ T5311] eventfs_create_events_dir+0x7c4/0x9f0
[ 94.851144][ T5311] create_event_toplevel_files+0x11e/0x1a0
[ 94.853982][ T5311] event_trace_add_tracer+0x8a/0x3b0
[ 94.856392][ T5311] trace_array_create_dir+0x77/0x160
[ 94.858833][ T5311] trace_array_create_systems+0xb3c/0xe60
[ 94.861341][ T5311] instance_mkdir+0xd5/0x140
[ 94.863723][ T5311] tracefs_syscall_mkdir+0x11a/0x190
[ 94.866892][ T5311] ? __pfx_tracefs_syscall_mkdir+0x10/0x10
[ 94.869992][ T5311] ? generic_permission+0x2bf/0x670
[ 94.872452][ T5311] ? bpf_lsm_inode_mkdir+0x9/0x20
[ 94.874809][ T5311] vfs_mkdir+0x406/0x620
[ 94.876793][ T5311] filename_mkdirat+0x285/0x510
[ 94.879101][ T5311] ? __pfx_filename_mkdirat+0x10/0x10
[ 94.881667][ T5311] ? do_getname+0x151/0x250
[ 94.883946][ T5311] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 94.887165][ T5311] __se_sys_mkdirat+0x35/0x150
[ 94.889660][ T5311] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 94.892413][ T5311] do_syscall_64+0x174/0x580
[ 94.894531][ T5311] ? trace_irq_disable+0x3b/0x140
[ 94.897577][ T5311] ? clear_bhb_loop+0x70/0xc0
[ 94.900865][ T5311] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 94.904501][ T5311] RIP: 0033:0x7f1dee39e0d9
[ 94.906670][ T5311] 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
[ 94.914739][ T5311] RSP: 002b:00007f1def351fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
[ 94.918399][ T5311] RAX: ffffffffffffffda RBX: 00007f1dee625fa0 RCX: 00007f1dee39e0d9
[ 94.922230][ T5311] RDX: 00000000000001ff RSI: 0000200000000100 RDI: ffffffffffffff9c
[ 94.926713][ T5311] RBP: 00007f1dee435024 R08: 0000000000000000 R09: 0000000000000000
[ 94.930624][ T5311] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 94.934135][ T5311] R13: 00007f1dee626038 R14: 00007f1dee625fa0 R15: 00007ffd83127cf8
[ 94.937865][ T5311]
[ 94.940022][ T5311] Kernel Offset: disabled
[ 94.942309][ T5311] Rebooting in 86400 seconds..