EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue. Quota mode: writeback. ext4 filesystem being mounted at /syzkaller-testdir911111960/syzkaller.7Wipz9/204/file0 supports timestamps until 2038 (0x7fffffff) INFO: task kworker/u4:1:31 blocked for more than 143 seconds. Not tainted 5.16.0-rc4-next-20211208 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:1 state:D stack:25056 pid: 31 ppid: 2 flags:0x00004000 Workqueue: events_unbound io_ring_exit_work Call Trace: context_switch kernel/sched/core.c:4986 [inline] __schedule+0x882/0x2160 kernel/sched/core.c:6296 schedule+0xd2/0x260 kernel/sched/core.c:6369 schedule_timeout+0x3ae/0x480 kernel/time/timer.c:1857 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x174/0x270 kernel/sched/completion.c:138 io_ring_exit_work+0xc33/0xc54 fs/io_uring.c:9568 process_one_work+0xa30/0x1710 kernel/workqueue.c:2318 worker_thread+0x62a/0x13e0 kernel/workqueue.c:2465 kthread+0x40c/0x500 kernel/kthread.c:345 ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:295 Showing all locks held in the system: 1 lock held by khungtaskd/24: #0: ffffffff85201860 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6460 2 locks held by kworker/u4:1/31: #0: ffff888007861138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888007861138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888007861138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888007861138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:635 [inline] #0: ffff888007861138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:662 [inline] #0: ffff888007861138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x929/0x1710 kernel/workqueue.c:2289 #1: ffff888009aa7da8 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710 kernel/workqueue.c:2293 1 lock held by in:imklog/186: #0: ffff88800f46eff0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:994 2 locks held by kworker/0:0/11860: #0: ffff888007858d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888007858d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888007858d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888007858d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:635 [inline] #0: ffff888007858d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:662 [inline] #0: ffff888007858d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x929/0x1710 kernel/workqueue.c:2289 #1: ffff88803d64fda8 ((work_completion)(&m->rq)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710 kernel/workqueue.c:2293 =============================================