INFO: task syz.2.142:7452 blocked for more than 155 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.142       state:D stack:0     pid:7452  tgid:7442  ppid:6563   task_flags:0x400040 flags:0x00000011
Call trace:
 __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T)
 context_switch kernel/sched/core.c:5325 [inline]
 __schedule+0x13b0/0x2864 kernel/sched/core.c:6929
 __schedule_loop kernel/sched/core.c:7011 [inline]
 schedule+0xb4/0x230 kernel/sched/core.c:7026
 request_wait_answer fs/fuse/dev.c:585 [inline]
 __fuse_request_send fs/fuse/dev.c:599 [inline]
 __fuse_simple_request+0xe04/0x1694 fs/fuse/dev.c:693
 fuse_simple_request fs/fuse/fuse_i.h:1250 [inline]
 fuse_send_open fs/fuse/file.c:52 [inline]
 fuse_file_open+0x33c/0x6b0 fs/fuse/file.c:147
 fuse_do_open fs/fuse/file.c:176 [inline]
 fuse_open+0x1fc/0x4e0 fs/fuse/file.c:265
 do_dentry_open+0x7a4/0x10bc fs/open.c:965
 vfs_open+0x44/0x2d4 fs/open.c:1097
 do_open fs/namei.c:3975 [inline]
 path_openat+0x2424/0x2c40 fs/namei.c:4134
 do_filp_open+0x18c/0x36c fs/namei.c:4161
 do_sys_openat2+0x11c/0x1b4 fs/open.c:1437
 do_sys_open fs/open.c:1452 [inline]
 __do_sys_openat fs/open.c:1468 [inline]
 __se_sys_openat fs/open.c:1463 [inline]
 __arm64_sys_openat+0x120/0x158 fs/open.c:1463
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:724
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

Showing all locks held in the system:
3 locks held by kworker/u8:0/12:
1 lock held by khungtaskd/32:
 #0: ffff80008f79b760 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330
6 locks held by kworker/u8:3/42:
1 lock held by kswapd0/75:
3 locks held by kworker/u8:10/766:
 #0: ffff0000c0031948 ((wq_completion)events_unbound#2){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3237
 #1: ffff80009c677be0 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3237
 #2: ffff800092888228 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80
3 locks held by kworker/0:2/2365:
 #0: ffff0000c0029948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x63c/0x155c kernel/workqueue.c:3237
 #1: ffff8000a28f7be0 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x6d4/0x155c kernel/workqueue.c:3237
 #2: ffff0000f6a1f240 (&data->fib_lock){+.+.}-{4:4}, at: nsim_fib_event_work+0x188/0x308 drivers/net/netdevsim/fib.c:1490
1 lock held by klogd/6183:
2 locks held by udevd/6194:
1 lock held by dhcpcd/6248:
3 locks held by dhcpcd/6249:
2 locks held by getty/6336:
 #0: ffff0000d8bc00a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff8000991b42f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa4 drivers/tty/n_tty.c:2222
1 lock held by syz-executor/6552:
 #0: ffff0000d3ae8308 (&xt[i].mutex){+.+.}-{4:4}, at: xt_find_table_lock+0x64/0x3c8 net/netfilter/x_tables.c:1243
2 locks held by syz-executor/6555:
1 lock held by syz-executor/6560:
 #0: ffff0000d3ae8308 (&xt[i].mutex){+.+.}-{4:4}, at: xt_find_target+0x84/0x24c net/netfilter/x_tables.c:254
1 lock held by udevd/6571:
2 locks held by syz-executor/7260:
1 lock held by syz-executor/7567:

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