INFO: task syz.4.111:5442 blocked for more than 144 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.111       state:D stack:0     pid:5442  tgid:5442  ppid:4709   task_flags:0x400040 flags:0x00800019
Call trace:
 __switch_to+0x2b0/0x6e0 arch/arm64/kernel/process.c:810 (T)
 context_switch kernel/sched/core.c:5388 [inline]
 __schedule+0x1c04/0x2db8 kernel/sched/core.c:7189
 __schedule_loop kernel/sched/core.c:7268 [inline]
 schedule+0x13c/0x20c kernel/sched/core.c:7283
 request_wait_answer fs/fuse/dev.c:590 [inline]
 __fuse_request_send fs/fuse/dev.c:604 [inline]
 __fuse_simple_request+0xac4/0x12f4 fs/fuse/dev.c:699
 fuse_simple_request fs/fuse/fuse_i.h:1262 [inline]
 fuse_flush+0x400/0x5e8 fs/fuse/file.c:500
 filp_flush+0xb4/0x184 fs/open.c:1467
 filp_close+0x28/0x48 fs/open.c:1480
 __range_close fs/file.c:794 [inline]
 __do_sys_close_range fs/file.c:855 [inline]
 __se_sys_close_range fs/file.c:819 [inline]
 __arm64_sys_close_range+0x304/0x800 fs/file.c:819
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:736
 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:755
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594

Showing all locks held in the system:
4 locks held by kworker/u8:0/12:
4 locks held by kworker/1:1/26:
 #0: ffff0000c002b540 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3289 [inline]
 #0: ffff0000c002b540 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x734/0x10b8 kernel/workqueue.c:3397
 #1: ffff80008ec37c40 (reg_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3289 [inline]
 #1: ffff80008ec37c40 (reg_work){+.+.}-{0:0}, at: process_scheduled_works+0x73c/0x10b8 kernel/workqueue.c:3397