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$inet6_udp(0xa, 0x2, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./gadget\x00', 0x1ff)
mount(0x0, &(0x7f00000003c0)='./cgroup.cpu/test\x00', &(0x7f0000000200)='gadgetfs\x00', 0x0, 0x0)
r3 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./gadget/dummy_udc\x00', 0x2, 0x0)
write(r3, &(0x7f0000000400)="0000000009020900010100803212010002000000402505a0a4000100000001", 0x1f)
socket$inet6(0xa, 0x1, 0x9)
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)
syz_mount_image$ext4(&(0x7f0000000180)='ext4\x00', &(0x7f0000000040)='./file1\x00', 0x21081e, &(0x7f0000000340)={[{@grpquota}, {@nogrpid}, {@user_xattr}]}, 0x1, 0x50f, &(0x7f0000000c80)="$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")
unlinkat(0xffffffffffffff9c, &(0x7f0000000c40)='./file1\x00', 0x0)
mkdir(&(0x7f0000000080)='./file1\x00', 0x0)
lsetxattr$system_posix_acl(&(0x7f0000000140)='./file1\x00', &(0x7f0000000040)='system.posix_acl_default\x00', &(0x7f0000000000)=ANY=[@ANYBLOB="02000000010000000000f400040000000000000020"], 0x1c, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
[ 76.758817][ T1326] ieee802154 phy0 wpan0: encryption failed: -22
[ 76.758892][ T1326] ieee802154 phy1 wpan1: encryption failed: -22
[ 76.892242][ T5307] oom_control is deprecated and will be removed. Please report your usecase to linux-mm@kvack.org if you depend on this functionality.
[ 77.160061][ T5308] Could not create tracefs 'set_event_pid' entry
[ 77.182532][ T5308] Could not create tracefs 'set_event_notrace_pid' entry
[ 77.201840][ T5308] ------------[ cut here ]------------
[ 77.204630][ T5308] !list_empty(&ei->children)
[ 77.204642][ T5308] WARNING: fs/tracefs/event_inode.c:128 at free_ei+0x284/0x340, CPU#0: syz.0.0/5308
[ 77.211299][ T5308] Modules linked in:
[ 77.213730][ T5308] CPU: 0 UID: 0 PID: 5308 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 77.217391][ T5308] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 77.221730][ T5308] RIP: 0010:free_ei+0x284/0x340
[ 77.223740][ T5308] 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
[ 77.231933][ T5308] RSP: 0018:ffffc9000debfa88 EFLAGS: 00010287
[ 77.234640][ T5308] RAX: ffffffff83df6b13 RBX: ffff8880124bf290 RCX: 0000000000100000
[ 77.237970][ T5308] RDX: ffffc9000f6d1000 RSI: 0000000000088b39 RDI: 0000000000088b3a
[ 77.241305][ T5308] RBP: ffff8880124bf280 R08: 00000000ffffffff R09: 1ffffffff20f1f46
[ 77.245270][ T5308] R10: dffffc0000000000 R11: fffffbfff20f1f47 R12: 0000000000000000
[ 77.248473][ T5308] R13: ffff88801f54a800 R14: ffff8880124bf280 R15: 0000000000000003
[ 77.251844][ T5308] FS: 00007f93364596c0(0000) GS:ffff88808c30a000(0000) knlGS:0000000000000000
[ 77.255538][ T5308] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 77.257932][ T5308] CR2: 00007fade9ba2120 CR3: 000000001f4ab000 CR4: 0000000000352ef0
[ 77.261639][ T5308] Call Trace:
[ 77.263350][ T5308]
[ 77.264590][ T5308] ? new_inode+0x13a/0x170
[ 77.266451][ T5308] ? tracefs_get_inode+0x11/0x80
[ 77.268483][ T5308] eventfs_create_events_dir+0x7c4/0x9f0
[ 77.270811][ T5308] create_event_toplevel_files+0x11e/0x1a0
[ 77.273867][ T5308] event_trace_add_tracer+0x8a/0x3b0
[ 77.276093][ T5308] trace_array_create_dir+0x77/0x160
[ 77.278255][ T5308] trace_array_create_systems+0xb3c/0xe60
[ 77.280654][ T5308] instance_mkdir+0xd5/0x140
[ 77.282337][ T5308] tracefs_syscall_mkdir+0x11a/0x190
[ 77.284580][ T5308] ? __pfx_tracefs_syscall_mkdir+0x10/0x10
[ 77.287180][ T5308] ? __sanitizer_cov_trace_switch+0x8/0x110
[ 77.289762][ T5308] ? bpf_lsm_inode_mkdir+0x9/0x20
[ 77.291948][ T5308] vfs_mkdir+0x40c/0x620
[ 77.293815][ T5308] filename_mkdirat+0x285/0x510
[ 77.295878][ T5308] ? __pfx_filename_mkdirat+0x10/0x10
[ 77.297976][ T5308] ? do_getname+0x151/0x250
[ 77.299741][ T5308] __se_sys_mkdirat+0x35/0x150
[ 77.301684][ T5308] do_syscall_64+0x166/0x520
[ 77.303760][ T5308] ? trace_irq_disable+0x3b/0x140
[ 77.305928][ T5308] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 77.308525][ T5308] ? clear_bhb_loop+0x70/0xc0
[ 77.310561][ T5308] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 77.313072][ T5308] RIP: 0033:0x7f933559e159
[ 77.315135][ T5308] 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
[ 77.323076][ T5308] RSP: 002b:00007f9336458fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
[ 77.327542][ T5308] RAX: ffffffffffffffda RBX: 00007f9335826090 RCX: 00007f933559e159
[ 77.330902][ T5308] RDX: 00000000000001ff RSI: 0000200000000100 RDI: ffffffffffffff9c
[ 77.334578][ T5308] RBP: 00007f9335635024 R08: 0000000000000000 R09: 0000000000000000
[ 77.338177][ T5308] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 77.341417][ T5308] R13: 00007f9335826128 R14: 00007f9335826090 R15: 00007ffe0bc9f648
[ 77.344866][ T5308]
[ 77.346194][ T5308] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 77.349317][ T5308] CPU: 0 UID: 0 PID: 5308 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 77.353165][ T5308] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 77.357085][ T5308] Call Trace:
[ 77.358432][ T5308]
[ 77.359737][ T5308] vpanic+0x56d/0xa60
[ 77.361399][ T5308] ? __pfx__printk+0x10/0x10
[ 77.363256][ T5308] ? __pfx_vpanic+0x10/0x10
[ 77.365087][ T5308] ? is_bpf_text_address+0x292/0x2b0
[ 77.367226][ T5308] ? is_bpf_text_address+0x26/0x2b0
[ 77.369315][ T5308] panic+0xc5/0xd0
[ 77.370852][ T5308] ? __pfx_panic+0x10/0x10
[ 77.372656][ T5308] __warn+0x315/0x4c0
[ 77.374111][ T5308] ? free_ei+0x284/0x340
[ 77.375801][ T5308] ? free_ei+0x284/0x340
[ 77.377469][ T5308] __report_bug+0x276/0x570
[ 77.379219][ T5308] ? free_ei+0x284/0x340
[ 77.380919][ T5308] ? __pfx___report_bug+0x10/0x10
[ 77.382917][ T5308] ? kasan_quarantine_put+0xbb/0x1f0
[ 77.384934][ T5308] ? free_ei+0x284/0x340
[ 77.386631][ T5308] report_bug+0x16b/0x220
[ 77.388498][ T5308] ? free_ei+0x284/0x340
[ 77.390345][ T5308] ? free_ei+0x286/0x340
[ 77.392158][ T5308] handle_bug+0x9c/0x200
[ 77.393877][ T5308] exc_invalid_op+0x1a/0x50
[ 77.395788][ T5308] asm_exc_invalid_op+0x1a/0x20
[ 77.397772][ T5308] RIP: 0010:free_ei+0x284/0x340
[ 77.399756][ T5308] 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
[ 77.407738][ T5308] RSP: 0018:ffffc9000debfa88 EFLAGS: 00010287
[ 77.410465][ T5308] RAX: ffffffff83df6b13 RBX: ffff8880124bf290 RCX: 0000000000100000
[ 77.414269][ T5308] RDX: ffffc9000f6d1000 RSI: 0000000000088b39 RDI: 0000000000088b3a
[ 77.418174][ T5308] RBP: ffff8880124bf280 R08: 00000000ffffffff R09: 1ffffffff20f1f46
[ 77.422226][ T5308] R10: dffffc0000000000 R11: fffffbfff20f1f47 R12: 0000000000000000
[ 77.425878][ T5308] R13: ffff88801f54a800 R14: ffff8880124bf280 R15: 0000000000000003
[ 77.429124][ T5308] ? free_ei+0x283/0x340
[ 77.430902][ T5308] ? free_ei+0x283/0x340
[ 77.432534][ T5308] ? new_inode+0x13a/0x170
[ 77.434206][ T5308] ? tracefs_get_inode+0x11/0x80
[ 77.436022][ T5308] eventfs_create_events_dir+0x7c4/0x9f0
[ 77.438340][ T5308] create_event_toplevel_files+0x11e/0x1a0
[ 77.440831][ T5308] event_trace_add_tracer+0x8a/0x3b0
[ 77.443109][ T5308] trace_array_create_dir+0x77/0x160
[ 77.445539][ T5308] trace_array_create_systems+0xb3c/0xe60
[ 77.447791][ T5308] instance_mkdir+0xd5/0x140
[ 77.449784][ T5308] tracefs_syscall_mkdir+0x11a/0x190
[ 77.452185][ T5308] ? __pfx_tracefs_syscall_mkdir+0x10/0x10
[ 77.454813][ T5308] ? __sanitizer_cov_trace_switch+0x8/0x110
[ 77.457432][ T5308] ? bpf_lsm_inode_mkdir+0x9/0x20
[ 77.459688][ T5308] vfs_mkdir+0x40c/0x620
[ 77.461557][ T5308] filename_mkdirat+0x285/0x510
[ 77.463759][ T5308] ? __pfx_filename_mkdirat+0x10/0x10
[ 77.466017][ T5308] ? do_getname+0x151/0x250
[ 77.468061][ T5308] __se_sys_mkdirat+0x35/0x150
[ 77.470171][ T5308] do_syscall_64+0x166/0x520
[ 77.472216][ T5308] ? trace_irq_disable+0x3b/0x140
[ 77.474380][ T5308] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 77.476810][ T5308] ? clear_bhb_loop+0x70/0xc0
[ 77.478618][ T5308] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 77.481050][ T5308] RIP: 0033:0x7f933559e159
[ 77.482969][ T5308] 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
[ 77.490684][ T5308] RSP: 002b:00007f9336458fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
[ 77.494108][ T5308] RAX: ffffffffffffffda RBX: 00007f9335826090 RCX: 00007f933559e159
[ 77.497317][ T5308] RDX: 00000000000001ff RSI: 0000200000000100 RDI: ffffffffffffff9c
[ 77.500483][ T5308] RBP: 00007f9335635024 R08: 0000000000000000 R09: 0000000000000000
[ 77.503982][ T5308] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 77.507193][ T5308] R13: 00007f9335826128 R14: 00007f9335826090 R15: 00007ffe0bc9f648
[ 77.510490][ T5308]
[ 77.512477][ T5308] Kernel Offset: disabled
[ 77.514468][ T5308] Rebooting in 86400 seconds..