INFO: task kworker/u4:13:6953 blocked for more than 145 seconds. Not tainted 6.2.0-syzkaller-18302-g596b6b709632 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:13 state:D stack:0 pid:6953 ppid:2 flags:0x00000008 Workqueue: events_unbound io_ring_exit_work Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5296 [inline] __schedule+0xfc8/0x1d64 kernel/sched/core.c:6609 schedule+0xc4/0x170 kernel/sched/core.c:6685 schedule_timeout+0xb8/0x348 kernel/time/timer.c:2143 do_wait_for_common+0x30c/0x468 kernel/sched/completion.c:85 __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x48/0x60 kernel/sched/completion.c:138 io_ring_exit_work+0x5e0/0x6cc io_uring/io_uring.c:2912 process_one_work+0x848/0x16b4 kernel/workqueue.c:2289 worker_thread+0x8e4/0xfec kernel/workqueue.c:2436 kthread+0x24c/0x2d4 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 INFO: task kworker/u4:14:6955 blocked for more than 145 seconds. Not tainted 6.2.0-syzkaller-18302-g596b6b709632 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:14 state:D stack:0 pid:6955 ppid:2 flags:0x00000008 Workqueue: events_unbound io_ring_exit_work Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5296 [inline] __schedule+0xfc8/0x1d64 kernel/sched/core.c:6609 schedule+0xc4/0x170 kernel/sched/core.c:6685 schedule_timeout+0xb8/0x348 kernel/time/timer.c:2143 do_wait_for_common+0x30c/0x468 kernel/sched/completion.c:85 __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x48/0x60 kernel/sched/completion.c:138 io_ring_exit_work+0x5e0/0x6cc io_uring/io_uring.c:2912 process_one_work+0x848/0x16b4 kernel/workqueue.c:2289 worker_thread+0x8e4/0xfec kernel/workqueue.c:2436 kthread+0x24c/0x2d4 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffff800015d66ff0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcb4 kernel/rcu/tasks.h:507 1 lock held by rcu_tasks_trace/13: #0: ffff800015d677f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcb4 kernel/rcu/tasks.h:507 1 lock held by khungtaskd/28: #0: ffff800015d66e20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:324 3 locks held by kworker/u4:2/39: 2 locks held by getty/5606: #0: ffff0000d7f4a098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80001a8902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1210 drivers/tty/n_tty.c:2177 2 locks held by kworker/u4:13/6953: #0: ffff0000c0029138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x664/0x16b4 kernel/workqueue.c:2262 #1: ffff800022517c20 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x16b4 kernel/workqueue.c:2264 2 locks held by kworker/u4:14/6955: #0: ffff0000c0029138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x664/0x16b4 kernel/workqueue.c:2262 #1: ffff800022377c20 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x16b4 kernel/workqueue.c:2264 3 locks held by kworker/u4:27/10919: 2 locks held by syz-executor.5/12656: =============================================