tmpfs: Unknown parameter 'mfN'
tmpfs: Unknown parameter 'mfN'
INFO: task syz-executor.3:4601 blocked for more than 143 seconds.
      Not tainted 5.10.79 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3  state:D stack:27952 pid: 4601 ppid:   290 flags:0x00004004
Call Trace:
 context_switch kernel/sched/core.c:3787 [inline]
 __schedule+0x848/0x1e80 kernel/sched/core.c:4536
 schedule+0xcb/0x270 kernel/sched/core.c:4614
 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:4673
 __mutex_lock_common kernel/locking/mutex.c:1047 [inline]
 __mutex_lock+0x7c9/0x1250 kernel/locking/mutex.c:1109
 mutex_lock_double kernel/events/core.c:11619 [inline]
 __perf_event_ctx_lock_double kernel/events/core.c:11678 [inline]
 __do_sys_perf_event_open+0x1244/0x2d00 kernel/events/core.c:11948
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f7f17189b19
RSP: 002b:00007f7f146ff188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f7f1729cf60 RCX: 00007f7f17189b19
RDX: 0000000000000000 RSI: 000000000000003d RDI: 0000000020001d80
RBP: 00007f7f171e3f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdabd59e4f R14: 00007f7f146ff300 R15: 0000000000022000

Showing all locks held in the system:
1 lock held by khungtaskd/22:
 #0: ffffffff84df6760 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x269 kernel/locking/lockdep.c:6379
1 lock held by in:imklog/184:
 #0: ffff88800d1a2370 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:930
3 locks held by syz-executor.3/4601:
 #0: ffff888043c6c058 (&sig->exec_update_lock){++++}-{3:3}, at: __do_sys_perf_event_open+0xfc1/0x2d00 kernel/events/core.c:11930
 #1: ffff888043a724b0 (&ctx->mutex){+.+.}-{3:3}, at: mutex_lock_double kernel/events/core.c:11618 [inline]
 #1: ffff888043a724b0 (&ctx->mutex){+.+.}-{3:3}, at: __perf_event_ctx_lock_double kernel/events/core.c:11678 [inline]
 #1: ffff888043a724b0 (&ctx->mutex){+.+.}-{3:3}, at: __do_sys_perf_event_open+0x1237/0x2d00 kernel/events/core.c:11948
 #2: ffff888043a724b0 (&ctx->mutex/1){+.+.}-{3:3}, at: mutex_lock_double kernel/events/core.c:11619 [inline]
 #2: ffff888043a724b0 (&ctx->mutex/1){+.+.}-{3:3}, at: __perf_event_ctx_lock_double kernel/events/core.c:11678 [inline]
 #2: ffff888043a724b0 (&ctx->mutex/1){+.+.}-{3:3}, at: __do_sys_perf_event_open+0x1244/0x2d00 kernel/events/core.c:11948

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