INFO: task syz-executor.0:9812 blocked for more than 430 seconds.
      Not tainted 5.12.0-rc6-syzkaller-00183-g7ae11635ec90 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0  state:D stack:    0 pid: 9812 ppid:  3075 flags:0x00000004
Call Trace:
[<ffffffe002a94300>] context_switch kernel/sched/core.c:4322 [inline]
[<ffffffe002a94300>] __schedule+0x47c/0xe8c kernel/sched/core.c:5073
[<ffffffe002a94d74>] schedule+0x64/0x166 kernel/sched/core.c:5152
[<ffffffe002a955d0>] schedule_preempt_disabled+0x16/0x28 kernel/sched/core.c:5211
[<ffffffe002a972cc>] __mutex_lock_common kernel/locking/mutex.c:1026 [inline]
[<ffffffe002a972cc>] __mutex_lock+0x4a8/0x99e kernel/locking/mutex.c:1096
[<ffffffe002a977d6>] mutex_lock_nested+0x14/0x1c kernel/locking/mutex.c:1111
[<ffffffe00028f5b6>] perf_event_exit_task_context kernel/events/core.c:12475 [inline]
[<ffffffe00028f5b6>] perf_event_exit_task+0x1be/0x708 kernel/events/core.c:12541
[<ffffffe000031fc4>] do_exit+0x77a/0x1846 kernel/exit.c:834
[<ffffffe00003319a>] do_group_exit+0xa0/0x198 kernel/exit.c:922
[<ffffffe00004c558>] get_signal+0x31e/0x14ba kernel/signal.c:2781
[<ffffffe000007e06>] do_signal arch/riscv/kernel/signal.c:271 [inline]
[<ffffffe000007e06>] do_notify_resume+0xa8/0x930 arch/riscv/kernel/signal.c:317
[<ffffffe000005586>] ret_from_exception+0x0/0x14

Showing all locks held in the system:
1 lock held by khungtaskd/898:
 #0: ffffffe00432b268 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x32/0x1fa kernel/locking/lockdep.c:6329
1 lock held by syslogd/2846:
2 locks held by getty/3020:
 #0: ffffffe00cc66098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x48 drivers/tty/tty_ldsem.c:340
 #1: ffffffd010a8b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x9ac/0xb08 drivers/tty/n_tty.c:2178
1 lock held by syz-executor.0/9810:
1 lock held by syz-executor.0/9812:
 #0: ffffffe00745d4b0 (&ctx->mutex){+.+.}-{3:3}, at: perf_event_exit_task_context kernel/events/core.c:12475 [inline]
 #0: ffffffe00745d4b0 (&ctx->mutex){+.+.}-{3:3}, at: perf_event_exit_task+0x1be/0x708 kernel/events/core.c:12541

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