INFO: task syz.2.15764:4444 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.15764     state:D stack:0     pid:4444  tgid:4444  ppid:2116   task_flags:0x400040 flags:0x00400019
Call trace:
 __switch_to+0x208/0x4ec arch/arm64/kernel/process.c:741 (T)
 context_switch kernel/sched/core.c:5357 [inline]
 __schedule+0xd58/0x3180 kernel/sched/core.c:6961
 __schedule_loop kernel/sched/core.c:7043 [inline]
 schedule+0xd0/0x344 kernel/sched/core.c:7058
 request_wait_answer+0x300/0x4ac fs/fuse/dev.c:565
 __fuse_request_send fs/fuse/dev.c:579 [inline]
 __fuse_simple_request+0x1e8/0x97c fs/fuse/dev.c:673
 fuse_simple_request fs/fuse/fuse_i.h:1230 [inline]
 fuse_flush+0x37c/0x4d8 fs/fuse/file.c:476
 filp_flush+0xd4/0x160 fs/open.c:1547
 filp_close+0x18/0x38 fs/open.c:1560
 __range_close fs/file.c:767 [inline]
 __do_sys_close_range fs/file.c:826 [inline]
 __se_sys_close_range fs/file.c:790 [inline]
 __arm64_sys_close_range+0x2b0/0x4c8 fs/file.c:790
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x6c/0x258 arch/arm64/kernel/syscall.c:49
 el0_svc_common.constprop.0+0xac/0x230 arch/arm64/kernel/syscall.c:132
 do_el0_svc_compat+0x40/0x68 arch/arm64/kernel/syscall.c:157
 el0_svc_compat+0x4c/0x184 arch/arm64/kernel/entry-common.c:1029
 el0t_32_sync_handler+0x88/0xac arch/arm64/kernel/entry-common.c:1047
 el0t_32_sync+0x19c/0x1a0 arch/arm64/kernel/entry.S:601
INFO: lockdep is turned off.
Kernel panic - not syncing: hung_task: blocked tasks
CPU: 1 UID: 0 PID: 33 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT 
Hardware name: linux,dummy-virt (DT)
Call trace:
 show_stack+0x18/0x24 arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x38/0xf4 lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 vpanic+0x550/0x5e0 kernel/panic.c:430
 nmi_panic+0x0/0x18c kernel/panic.c:566
 check_hung_uninterruptible_tasks kernel/hung_task.c:332 [inline]
 watchdog+0x4d8/0xd98 kernel/hung_task.c:491
 kthread+0x348/0x5fc kernel/kthread.c:463
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
SMP: stopping secondary CPUs
Kernel Offset: disabled
CPU features: 0x20800,01001a00,10002000,0400421b
Memory Limit: none
Rebooting in 86400 seconds..