INFO: task syz.5.3924:15483 blocked for more than 150 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.3924      state:D stack:24648 pid:15483 tgid:15483 ppid:10254  task_flags:0x400040 flags:0x00080003
Call Trace:
 <TASK>
 __schedule+0x17db/0x58f0
 schedule+0x164/0x2b0
 fuse_chan_send+0x1079/0x1ad0
 fuse_flush+0x66e/0x8b0
 filp_flush+0xbd/0x190
 filp_close+0x1d/0x40
 __se_sys_close_range+0x3d3/0x900
 do_syscall_64+0x166/0x520
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdaebf9e1d9
RSP: 002b:00007fff95cbdd18 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: ffffffffffffffda RBX: 00007fdaec227da0 RCX: 00007fdaebf9e1d9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fdaec227da0 R08: 00007fdaec226218 R09: 0000000000000000
R10: 00000000005ec33c R11: 0000000000000246 R12: 000000000006a9ab
R13: 00007fdaec22618c R14: 000000000006a76a R15: 00007fff95cbde20
 </TASK>

Showing all locks held in the system:
locks held by kthreadd/2: 1, last CPU#0:
 #0: ffffffff8feabb30 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_read_lock+0x27/0x60
locks held by kworker/u8:0/12: 4, on CPU#0:
 #0: ffff8881012d5940 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc90000117c40 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #2: ffffffff91243d48 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xf5/0x810
 #3: ffffffff915fba80 (uevent_sock_mutex){+.+.}-{4:4}, at: kobject_uevent_net_broadcast+0x27e/0x560
locks held by kworker/u8:1/13: 2, last CPU#0:
