syzbot

INFO: task iou-wrk-7970:7974 blocked for more than 146 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:iou-wrk-7970    state:D stack:29480 pid:7974  tgid:7961  ppid:5852   task_flags:0x404050 flags:0x00080003
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5325 [inline]
 __schedule+0x1798/0x4cc0 kernel/sched/core.c:6929
 __schedule_loop kernel/sched/core.c:7011 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:7026
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7083
 __mutex_lock_common kernel/locking/mutex.c:676 [inline]
 __mutex_lock+0x7e6/0x1350 kernel/locking/mutex.c:760
 io_ring_submit_lock io_uring/io_uring.h:377 [inline]
 io_file_get_fixed+0x2a0/0x350 io_uring/io_uring.c:2003
 io_assign_file io_uring/io_uring.c:1797 [inline]
 io_wq_submit_work+0x2c3/0xb90 io_uring/io_uring.c:1920
 io_worker_handle_work+0x7cd/0x1180 io_uring/io-wq.c:650
 io_wq_worker+0x42f/0xeb0 io_uring/io-wq.c:704
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245