INFO: task udevd:6042 blocked for more than 143 seconds.
      Not tainted 6.6.0-rc6-syzkaller-g78124b0c1d10 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd           state:D stack:0     pid:6042  ppid:5631   flags:0x0000000d
Call trace:
 __switch_to+0x314/0x560 arch/arm64/kernel/process.c:556
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x1364/0x23b4 kernel/sched/core.c:6695
 schedule+0xc4/0x170 kernel/sched/core.c:6771
 io_schedule+0x8c/0x12c kernel/sched/core.c:9026
 folio_wait_bit_common+0x65c/0xb90 mm/filemap.c:1301
 __folio_lock mm/filemap.c:1629 [inline]
 folio_lock include/linux/pagemap.h:1042 [inline]
 __filemap_get_folio+0x1e4/0x8b8 mm/filemap.c:1882
 truncate_inode_pages_range+0x444/0xd58 mm/truncate.c:376
 truncate_inode_pages+0x2c/0x3c mm/truncate.c:448
 kill_bdev block/bdev.c:76 [inline]
 blkdev_flush_mapping+0x134/0x280 block/bdev.c:630
 blkdev_put_whole block/bdev.c:661 [inline]
 blkdev_put+0x534/0x740 block/bdev.c:898
 blkdev_release+0x84/0x9c block/fops.c:604
 __fput+0x324/0x7f8 fs/file_table.c:384
 ____fput+0x20/0x30 fs/file_table.c:412
 task_work_run+0x230/0x2e0 kernel/task_work.c:180
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0x63c/0x1f58 kernel/exit.c:874
 do_group_exit+0x194/0x22c kernel/exit.c:1024
 get_signal+0x1500/0x15ec kernel/signal.c:2892
 do_signal arch/arm64/kernel/signal.c:1249 [inline]
 do_notify_resume+0x3bc/0x393c arch/arm64/kernel/signal.c:1302
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:144 [inline]
 el0_svc+0x9c/0x158 arch/arm64/kernel/entry-common.c:679
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595
INFO: task syz-executor169:6162 blocked for more than 143 seconds.
      Not tainted 6.6.0-rc6-syzkaller-g78124b0c1d10 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor169 state:D stack:0     pid:6162  ppid:6040   flags:0x00000005
Call trace:
 __switch_to+0x314/0x560 arch/arm64/kernel/process.c:556
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x1364/0x23b4 kernel/sched/core.c:6695
 schedule+0xc4/0x170 kernel/sched/core.c:6771
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6830
 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799
 blkdev_get_by_dev+0x114/0x55c block/bdev.c:786
 blkdev_open+0x128/0x2b0 block/fops.c:589
 do_dentry_open+0x6fc/0x118c fs/open.c:929
 vfs_open+0x7c/0x90 fs/open.c:1063
 do_open fs/namei.c:3639 [inline]
 path_openat+0x1f2c/0x27f8 fs/namei.c:3796
 do_filp_open+0x1bc/0x3cc fs/namei.c:3823
 do_sys_openat2+0x124/0x1b8 fs/open.c:1422
 do_sys_open fs/open.c:1437 [inline]
 __do_sys_openat fs/open.c:1453 [inline]
 __se_sys_openat fs/open.c:1448 [inline]
 __arm64_sys_openat+0x1f0/0x240 fs/open.c:1448
 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155
 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595

Showing all locks held in the system:
1 lock held by khungtaskd/29:
 #0: ffff80008e3737c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:302
2 locks held by getty/5771:
 #0: ffff0000d24a70a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff800095a202f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1214 drivers/tty/n_tty.c:2206
1 lock held by udevd/6042:
 #0: ffff0000c9f9f4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xec/0x740 block/bdev.c:884
1 lock held by syz-executor169/6162:
 #0: ffff0000c9f9f4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x114/0x55c block/bdev.c:786

=============================================