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)='100000', 0x6)
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)
socket$nl_netfilter(0x10, 0x3, 0xc)
mount(0x0, &(0x7f00000002c0)='./tracing\x00', &(0x7f00000000c0)='tracefs\x00', 0x0, 0x0)
socket$nl_route(0x10, 0x3, 0x0)
socket$inet6_udp(0xa, 0x2, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./gadget\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./gadget\x00', &(0x7f0000000200)='gadgetfs\x00', 0x0, 0x0)
r3 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./gadget/dummy_udc\x00', 0x2, 0x0)
write(r3, &(0x7f0000000400)="0000000009020900010100803212010002000000402505a0a4000100000001", 0x1f)
socket$inet6(0xa, 0x1, 0x0)
r4 = fsopen(&(0x7f0000000000)='cgroup2\x00', 0x0)
fsconfig$FSCONFIG_CMD_CREATE(r4, 0x6, 0x0, 0x0, 0x0)
r5 = fsmount(r4, 0x0, 0x0)
r6 = openat$cgroup_pressure(r5, &(0x7f00000000c0)='memory.pressure\x00', 0x2, 0x0)
read(r6, &(0x7f0000000100)=""/43, 0x2b)
socket$inet_tcp(0x2, 0x1, 0x0)
socket$inet_tcp(0x2, 0x1, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./tracing/instances/inst1\x00', 0x1ff) (fail_nth: 15)
[ 94.709369][ T4637] Bluetooth: hci0: command tx timeout
[ 94.876808][ T5311] oom_control is deprecated and will be removed. Please report your usecase to linux-mm@kvack.org if you depend on this functionality.
[ 94.897372][ T5311] gadgetfs: bound to dummy_udc driver
[ 95.002118][ T5311] Could not create tracefs 'set_event_notrace_pid' entry
[ 95.040989][ T5311] ------------[ cut here ]------------
[ 95.043847][ T5311] !list_empty(&ei->children)
[ 95.043860][ T5311] WARNING: fs/tracefs/event_inode.c:128 at free_ei+0x284/0x340, CPU#0: syz.0.0/5311
[ 95.050837][ T5311] Modules linked in:
[ 95.053567][ T5311] CPU: 0 UID: 0 PID: 5311 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 95.057010][ T5311] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 95.060844][ T5311] RIP: 0010:free_ei+0x284/0x340
[ 95.062836][ T5311] 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
[ 95.070390][ T5311] RSP: 0018:ffffc9000f107a88 EFLAGS: 00010293
[ 95.073232][ T5311] RAX: ffffffff83df6b13 RBX: ffff888013790410 RCX: ffff88801c362580
[ 95.076707][ T5311] RDX: 0000000000000000 RSI: ffffffff8c6d1560 RDI: ffff888013790400
[ 95.080131][ T5311] RBP: ffff888013790400 R08: 00000000ffffffff R09: 1ffffffff20f1f46
[ 95.083668][ T5311] R10: dffffc0000000000 R11: fffffbfff20f1f47 R12: 0000000000000000
[ 95.087309][ T5311] R13: ffff888012123000 R14: ffff888013790400 R15: 0000000000000003
[ 95.091309][ T5311] FS: 00007f978cf866c0(0000) GS:ffff88808c30a000(0000) knlGS:0000000000000000
[ 95.095435][ T5311] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 95.098333][ T5311] CR2: 00007f978cf5d9d0 CR3: 000000004307a000 CR4: 0000000000352ef0
[ 95.101948][ T5311] Call Trace:
[ 95.103609][ T5311]
[ 95.104897][ T5311] ? new_inode+0x13a/0x170
[ 95.106890][ T5311] ? tracefs_get_inode+0x11/0x80
[ 95.109093][ T5311] eventfs_create_events_dir+0x7c4/0x9f0
[ 95.111648][ T5311] create_event_toplevel_files+0x11e/0x1a0
[ 95.114321][ T5311] event_trace_add_tracer+0x8a/0x3b0
[ 95.116648][ T5311] trace_array_create_dir+0x77/0x160
[ 95.118859][ T5311] trace_array_create_systems+0xb3c/0xe60
[ 95.120945][ T5311] instance_mkdir+0xd5/0x140
[ 95.122745][ T5311] tracefs_syscall_mkdir+0x11a/0x190
[ 95.125600][ T5311] ? __pfx_tracefs_syscall_mkdir+0x10/0x10
[ 95.128173][ T5311] ? generic_permission+0x2bf/0x670
[ 95.130132][ T5311] ? bpf_lsm_inode_mkdir+0x9/0x20
[ 95.132098][ T5311] vfs_mkdir+0x40c/0x620
[ 95.133962][ T5311] filename_mkdirat+0x285/0x510
[ 95.136078][ T5311] ? __pfx_filename_mkdirat+0x10/0x10
[ 95.138330][ T5311] ? do_getname+0x151/0x250
[ 95.140300][ T5311] __se_sys_mkdirat+0x35/0x150
[ 95.142239][ T5311] do_syscall_64+0x166/0x520
[ 95.144340][ T5311] ? trace_irq_disable+0x3b/0x140
[ 95.146361][ T5311] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 95.148817][ T5311] ? clear_bhb_loop+0x70/0xc0
[ 95.150851][ T5311] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 95.153478][ T5311] RIP: 0033:0x7f978c19e0d9
[ 95.155455][ 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
[ 95.163490][ T5311] RSP: 002b:00007f978cf85fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
[ 95.166897][ T5311] RAX: ffffffffffffffda RBX: 00007f978c425fa0 RCX: 00007f978c19e0d9
[ 95.170057][ T5311] RDX: 00000000000001ff RSI: 0000200000000100 RDI: ffffffffffffff9c
[ 95.173401][ T5311] RBP: 00007f978cf86050 R08: 0000000000000000 R09: 0000000000000000
[ 95.176629][ T5311] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[ 95.179922][ T5311] R13: 00007f978c426038 R14: 00007f978c425fa0 R15: 00007ffef1a2f048
[ 95.183269][ T5311]
[ 95.184557][ T5311] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 95.187428][ T5311] CPU: 0 UID: 0 PID: 5311 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 95.191156][ T5311] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 95.195247][ T5311] Call Trace:
[ 95.196639][ T5311]
[ 95.197917][ T5311] vpanic+0x56d/0xa60
[ 95.199478][ T5311] ? __pfx__printk+0x10/0x10
[ 95.201426][ T5311] ? __pfx_vpanic+0x10/0x10
[ 95.203324][ T5311] ? is_bpf_text_address+0x292/0x2b0
[ 95.205489][ T5311] ? is_bpf_text_address+0x26/0x2b0
[ 95.207639][ T5311] panic+0xc5/0xd0
[ 95.209181][ T5311] ? __pfx_panic+0x10/0x10
[ 95.211006][ T5311] __warn+0x315/0x4c0
[ 95.212604][ T5311] ? free_ei+0x284/0x340
[ 95.214262][ T5311] ? free_ei+0x284/0x340
[ 95.215966][ T5311] __report_bug+0x276/0x570
[ 95.217771][ T5311] ? free_ei+0x284/0x340
[ 95.219576][ T5311] ? __pfx___report_bug+0x10/0x10
[ 95.221696][ T5311] ? kasan_quarantine_put+0xbb/0x1f0
[ 95.224813][ T5311] ? free_ei+0x284/0x340
[ 95.226980][ T5311] report_bug+0x16b/0x220
[ 95.229269][ T5311] ? free_ei+0x284/0x340
[ 95.231487][ T5311] ? free_ei+0x286/0x340
[ 95.233626][ T5311] handle_bug+0x9c/0x200
[ 95.235823][ T5311] exc_invalid_op+0x1a/0x50
[ 95.238029][ T5311] asm_exc_invalid_op+0x1a/0x20
[ 95.239916][ T5311] RIP: 0010:free_ei+0x284/0x340
[ 95.241905][ T5311] 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
[ 95.249933][ T5311] RSP: 0018:ffffc9000f107a88 EFLAGS: 00010293
[ 95.252508][ T5311] RAX: ffffffff83df6b13 RBX: ffff888013790410 RCX: ffff88801c362580
[ 95.255633][ T5311] RDX: 0000000000000000 RSI: ffffffff8c6d1560 RDI: ffff888013790400
[ 95.258886][ T5311] RBP: ffff888013790400 R08: 00000000ffffffff R09: 1ffffffff20f1f46
[ 95.262202][ T5311] R10: dffffc0000000000 R11: fffffbfff20f1f47 R12: 0000000000000000
[ 95.265506][ T5311] R13: ffff888012123000 R14: ffff888013790400 R15: 0000000000000003
[ 95.268788][ T5311] ? free_ei+0x283/0x340
[ 95.270645][ T5311] ? free_ei+0x283/0x340
[ 95.272482][ T5311] ? new_inode+0x13a/0x170
[ 95.274410][ T5311] ? tracefs_get_inode+0x11/0x80
[ 95.276514][ T5311] eventfs_create_events_dir+0x7c4/0x9f0
[ 95.278732][ T5311] create_event_toplevel_files+0x11e/0x1a0
[ 95.281129][ T5311] event_trace_add_tracer+0x8a/0x3b0
[ 95.283305][ T5311] trace_array_create_dir+0x77/0x160
[ 95.285501][ T5311] trace_array_create_systems+0xb3c/0xe60
[ 95.287965][ T5311] instance_mkdir+0xd5/0x140
[ 95.289834][ T5311] tracefs_syscall_mkdir+0x11a/0x190
[ 95.291954][ T5311] ? __pfx_tracefs_syscall_mkdir+0x10/0x10
[ 95.294253][ T5311] ? generic_permission+0x2bf/0x670
[ 95.296318][ T5311] ? bpf_lsm_inode_mkdir+0x9/0x20
[ 95.298599][ T5311] vfs_mkdir+0x40c/0x620
[ 95.300157][ T5311] filename_mkdirat+0x285/0x510
[ 95.302165][ T5311] ? __pfx_filename_mkdirat+0x10/0x10
[ 95.304135][ T5311] ? do_getname+0x151/0x250
[ 95.305867][ T5311] __se_sys_mkdirat+0x35/0x150
[ 95.307576][ T5311] do_syscall_64+0x166/0x520
[ 95.309199][ T5311] ? trace_irq_disable+0x3b/0x140
[ 95.311331][ T5311] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 95.313711][ T5311] ? clear_bhb_loop+0x70/0xc0
[ 95.315657][ T5311] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 95.318101][ T5311] RIP: 0033:0x7f978c19e0d9
[ 95.320260][ 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
[ 95.327983][ T5311] RSP: 002b:00007f978cf85fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
[ 95.331557][ T5311] RAX: ffffffffffffffda RBX: 00007f978c425fa0 RCX: 00007f978c19e0d9
[ 95.334836][ T5311] RDX: 00000000000001ff RSI: 0000200000000100 RDI: ffffffffffffff9c
[ 95.337915][ T5311] RBP: 00007f978cf86050 R08: 0000000000000000 R09: 0000000000000000
[ 95.341124][ T5311] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
[ 95.344245][ T5311] R13: 00007f978c426038 R14: 00007f978c425fa0 R15: 00007ffef1a2f048
[ 95.347458][ T5311]
[ 95.349048][ T5311] Kernel Offset: disabled
[ 95.350852][ T5311] Rebooting in 86400 seconds..