INFO: task syz-executor.1:21503 blocked for more than 143 seconds.
      Not tainted 5.13.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:26720 pid:21503 ppid:  8445 flags:0x00004006
Call Trace:
 context_switch kernel/sched/core.c:4339 [inline]
 __schedule+0x916/0x23e0 kernel/sched/core.c:5147
 schedule+0xcf/0x270 kernel/sched/core.c:5226
 perf_event_free_task+0x519/0x6c0 kernel/events/core.c:12772
 copy_process+0x4a7b/0x7120 kernel/fork.c:2379
 kernel_clone+0xe7/0xab0 kernel/fork.c:2503
 __do_sys_clone+0xc8/0x110 kernel/fork.c:2620
 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665d9
RSP: 002b:00007fa492bee188 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 00000000004665d9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000006cb2e100
RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007ffdf33abaef R14: 00007fa492bee300 R15: 0000000000022000

Showing all locks held in the system:
1 lock held by khungtaskd/1632:
 #0: ffffffff8bf767e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6333
1 lock held by in:imklog/8129:
 #0: ffff8880208c2870 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:974

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 1632 Comm: khungtaskd Not tainted 5.13.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x141/0x1d7 lib/dump_stack.c:120
 nmi_cpu_backtrace.cold+0x44/0xd7 lib/nmi_backtrace.c:105
 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:209 [inline]
 watchdog+0xd48/0xfb0 kernel/hung_task.c:294
 kthread+0x3b1/0x4a0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4846 Comm: systemd-journal Not tainted 5.13.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:arch_irqs_disabled_flags arch/x86/include/asm/irqflags.h:127 [inline]
RIP: 0010:lock_acquire kernel/locking/lockdep.c:5513 [inline]
RIP: 0010:lock_acquire+0x180/0x740 kernel/locking/lockdep.c:5477
Code: 85 c9 0f 85 cc 00 00 00 9c 8f 44 24 08 fa 48 c7 c7 80 9e 6b 89 e8 70 8c bc 07 41 89 e8 44 89 e1 44 89 fa 65 ff 05 00 47 a8 7e <48> 81 64 24 08 00 02 00 00 44 89 f6 6a 00 4c 89 ef 6a 00 ff b4 24
RSP: 0018:ffffc90000f07be8 EFLAGS: 00000002
RAX: 0000000000000001 RBX: 1ffff920001e0f7f RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: 0000000000000001 R09: ffffffff8dc92f57
R10: fffffbfff1b925ea R11: 0000000000000000 R12: 0000000000000000
R13: ffffffff90943f68 R14: 0000000000000000 R15: 0000000000000000
FS:  00007ff6b10358c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff6ae54a000 CR3: 000000001cec5000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:159
 __debug_check_no_obj_freed lib/debugobjects.c:975 [inline]
 debug_check_no_obj_freed+0xc7/0x420 lib/debugobjects.c:1018
 kmem_cache_free+0x149/0x200 mm/slab.c:3739
 putname+0xe1/0x120 fs/namei.c:259
 do_sys_openat2+0x153/0x420 fs/open.c:1196
 do_sys_open fs/open.c:1203 [inline]
 __do_sys_open fs/open.c:1211 [inline]
 __se_sys_open fs/open.c:1207 [inline]
 __x64_sys_open+0x119/0x1c0 fs/open.c:1207
 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7ff6b05c4840
Code: 73 01 c3 48 8b 0d 68 77 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 89 bb 20 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 1e f6 ff ff 48 89 04 24
RSP: 002b:00007ffec752bc38 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007ffec752bf40 RCX: 00007ff6b05c4840
RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 0000560df70d02d0
RBP: 000000000000000d R08: 000000000000ffc0 R09: 00000000ffffffff
R10: 0000000000000069 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000560df70c4060 R14: 00007ffec752bf00 R15: 0000560df70d00f0