INFO: task udevd:4663 blocked in I/O wait for more than 143 seconds.
      Not tainted syzkaller #0
      Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd           state:D stack:0     pid:4663  tgid:4663  ppid:4302   task_flags:0x40054c flags:0x00000019
Call trace:
 __switch_to+0x2b0/0x6e0 arch/arm64/kernel/process.c:810 (T)
 context_switch kernel/sched/core.c:5387 [inline]
 __schedule+0x1b74/0x2d24 kernel/sched/core.c:7188
 __schedule_loop kernel/sched/core.c:7267 [inline]
 schedule+0xa4/0x140 kernel/sched/core.c:7282
 io_schedule+0x1c/0xe0 kernel/sched/core.c:8109
 folio_wait_bit_common+0x674/0x9ec mm/filemap.c:1324
 __folio_lock+0x2c/0x3c mm/filemap.c:1705
 folio_lock include/linux/pagemap.h:1159 [inline]
 truncate_inode_pages_range+0x8fc/0xe58 mm/truncate.c:458
 truncate_inode_pages+0x2c/0x3c mm/truncate.c:485
 kill_bdev+0x74/0x90 block/bdev.c:91
 blkdev_flush_mapping+0xb4/0x23c block/bdev.c:720
 blkdev_put_whole+0x64/0x114 block/bdev.c:727
 bdev_release+0x248/0x32c block/bdev.c:-1
 blkdev_release+0x20/0x34 block/fops.c:705
 __fput+0x340/0x744 fs/file_table.c:510
 ____fput+0x20/0x30 fs/file_table.c:538
 task_work_run+0x1c4/0x254 kernel/task_work.c:233
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x580/0x1a6c kernel/exit.c:975
 do_group_exit+0x194/0x22c kernel/exit.c:1117
 get_signal+0xfb0/0x1094 kernel/signal.c:3037
 arch_do_signal_or_restart+0x284/0x43bc arch/arm64/kernel/signal.c:1665
 __exit_to_user_mode_loop kernel/entry/common.c:64 [inline]
 exit_to_user_mode_loop+0x70/0x17c kernel/entry/common.c:98
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 exit_to_user_mode_prepare_legacy include/linux/irq-entry-common.h:224 [inline]
 arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:86 [inline]
 el0_svc+0x180/0x25c arch/arm64/kernel/entry-common.c:724
 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:742
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594

Showing all locks held in the system:
1 lock held by khungtaskd/31:
 #0: ffff800088ac66e0 (rcu_read_lock){....}-{1:3}, at: __ll_sc_atomic64_fetch_or arch/arm64/include/asm/atomic_ll_sc.h:-1 [inline]
 #0: ffff800088ac66e0 (rcu_read_lock){....}-{1:3}, at: arch_atomic64_fetch_or arch/arm64/include/asm/atomic.h:86 [inline]
 #0: ffff800088ac66e0 (rcu_read_lock){....}-{1:3}, at: raw_atomic64_fetch_or include/linux/atomic/atomic-arch-fallback.h:3816 [inline]
 #0: ffff800088ac66e0 (rcu_read_lock){....}-{1:3}, at: raw_atomic_long_fetch_or include/linux/atomic/atomic-long.h:1090 [inline]
 #0: ffff800088ac66e0 (rcu_read_lock){....}-{1:3}, at: arch_test_and_set_bit include/asm-generic/bitops/atomic.h:42 [inline]
 #0: ffff800088ac66e0 (rcu_read_lock){....}-{1:3}, at: test_and_set_bit include/asm-generic/bitops/instrumented-atomic.h:72 [inline]
 #0: ffff800088ac66e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x0/0x44 kernel/sched/sched.h:3869
2 locks held by pr/ttyAMA-1/41:
2 locks held by getty/4451:
 #0: ffff0000d39110a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff80009228b2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x354/0xf84 drivers/tty/n_tty.c:2211
1 lock held by udevd/4663:
 #0: ffff0000c7b3e350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_release+0x128/0x32c block/bdev.c:1136

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