INFO: task syz-executor.0:3750 blocked for more than 430 seconds. Not tainted 5.12.0-rc2-syzkaller-00467-g0d7588ab9ef9 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack: 0 pid: 3750 ppid: 3070 flags:0x00000004 Call Trace: [] context_switch kernel/sched/core.c:4324 [inline] [] __schedule+0x478/0xdec kernel/sched/core.c:5075 [] schedule+0x64/0x166 kernel/sched/core.c:5154 [] schedule_timeout+0x124/0x15a kernel/time/timer.c:1868 [] do_wait_for_common kernel/sched/completion.c:85 [inline] [] __wait_for_common+0xd8/0x198 kernel/sched/completion.c:106 [] wait_for_common kernel/sched/completion.c:117 [inline] [] wait_for_completion+0x1a/0x22 kernel/sched/completion.c:138 [] io_sq_thread_finish+0x76/0x40c fs/io_uring.c:7127 [] io_sq_offload_create fs/io_uring.c:7928 [inline] [] io_uring_create fs/io_uring.c:9401 [inline] [] io_uring_setup+0x1500/0x1c74 fs/io_uring.c:9484 [] __do_sys_io_uring_setup fs/io_uring.c:9490 [inline] [] sys_io_uring_setup+0x22/0x2e fs/io_uring.c:9487 [] ret_from_syscall+0x0/0x2 Showing all locks held in the system: 1 lock held by khungtaskd/897: #0: ffffffe00432b1e8 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x32/0x1fa kernel/locking/lockdep.c:6329 1 lock held by klogd/2851: 2 locks held by getty/3020: #0: ffffffe00c992098 (&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 3 locks held by kworker/0:6/3542: =============================================