INFO: task syz.0.489:5071 blocked for more than 438 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.489       state:D stack:0     pid:5071  tgid:5070  ppid:3320   task_flags:0x400140 flags:0x00400011
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_readdir_uncached+0x32c/0x13fc fs/fuse/readdir.c:363
 fuse_readdir+0x5b8/0x1314 fs/fuse/readdir.c:600
 iterate_dir+0x1ec/0x7f4 fs/readdir.c:108
 __do_sys_getdents64 fs/readdir.c:410 [inline]
 __se_sys_getdents64 fs/readdir.c:396 [inline]
 __arm64_sys_getdents64+0x108/0x298 fs/readdir.c:396
 __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: task syz.0.489:5074 blocked for more than 449 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.489       state:D stack:0     pid:5074  tgid:5070  ppid:3320   task_flags:0x400040 flags:0x00400001
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
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:7115
 rwsem_down_write_slowpath+0x4b4/0xd58 kernel/locking/rwsem.c:1185
 __down_write_common kernel/locking/rwsem.c:1317 [inline]
 __down_write kernel/locking/rwsem.c:1326 [inline]
 down_write_nested+0x190/0x1a8 kernel/locking/rwsem.c:1707
 inode_lock_nested include/linux/fs.h:914 [inline]
 fuse_reverse_inval_entry+0x44/0x3f8 fs/fuse/dir.c:1406
 fuse_notify_delete fs/fuse/dev.c:1732 [inline]
 fuse_notify fs/fuse/dev.c:2070 [inline]
 fuse_dev_do_write+0x216c/0x23ac fs/fuse/dev.c:2158
 fuse_dev_write+0x120/0x194 fs/fuse/dev.c:2242
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x4b0/0xb88 fs/read_write.c:686
 ksys_write+0xec/0x1d8 fs/read_write.c:738
 __do_sys_write fs/read_write.c:749 [inline]
 __se_sys_write fs/read_write.c:746 [inline]
 __arm64_sys_write+0x6c/0x9c fs/read_write.c:746
 __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

Showing all locks held in the system:
1 lock held by kthreadd/2:
4 locks held by kworker/0:0/9:
3 locks held by kworker/0:1/10: