INFO: task udevd:3521 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd           state:D stack:0     pid:3521  tgid:3521  ppid:3136   task_flags:0x400140 flags:0x00000019
Call trace:
 __switch_to+0x208/0x4f0 arch/arm64/kernel/process.c:741 (T)
 context_switch kernel/sched/core.c:5256 [inline]
 __schedule+0xd1c/0x3278 kernel/sched/core.c:6863
 __schedule_loop kernel/sched/core.c:6945 [inline]
 schedule+0xd0/0x344 kernel/sched/core.c:6960
 io_schedule+0xac/0x114 kernel/sched/core.c:7789
 folio_wait_bit_common+0x2a4/0x630 mm/filemap.c:1323
 folio_put_wait_locked mm/filemap.c:1487 [inline]
 do_read_cache_folio+0x240/0x3f4 mm/filemap.c:4078
 read_cache_folio+0x44/0x6c mm/filemap.c:4128
 read_mapping_folio include/linux/pagemap.h:1017 [inline]
 read_part_sector+0xac/0x5f4 block/partitions/core.c:722
 msdos_partition+0xe4/0x1f3c block/partitions/msdos.c:592
 check_partition block/partitions/core.c:141 [inline]
 blk_add_partitions block/partitions/core.c:589 [inline]
 bdev_disk_changed+0x504/0xf08 block/partitions/core.c:693
 blkdev_get_whole+0x144/0x1e4 block/bdev.c:765
 bdev_open+0x1dc/0xa84 block/bdev.c:974
 blkdev_open+0x270/0x3dc block/fops.c:698
 do_dentry_open+0x3f4/0x10e4 fs/open.c:962
 vfs_open+0x5c/0x2fc fs/open.c:1094
 do_open fs/namei.c:4628 [inline]
 path_openat+0x17f0/0x28cc fs/namei.c:4787
 do_filp_open+0x184/0x360 fs/namei.c:4814
 do_sys_openat2+0xe0/0x180 fs/open.c:1430
 do_sys_open fs/open.c:1436 [inline]
 __do_sys_openat fs/open.c:1452 [inline]
 __se_sys_openat fs/open.c:1447 [inline]
 __arm64_sys_openat+0x12c/0x1bc fs/open.c:1447
 __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+0x40/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x54/0x2b0 arch/arm64/kernel/entry-common.c:724
 el0t_64_sync_handler+0xa0/0xe4 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:
1 lock held by khungtaskd/32:
 #0: ffff8000875525e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x18/0x1c4 kernel/locking/lockdep.c:6769
2 locks held by udevd/3136:
2 locks held by getty/3260:
 #0: ffff000018d4f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff80008d8eb2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x3e8/0xdd0 drivers/tty/n_tty.c:2211
1 lock held by udevd/3521:
 #0: ffff000014fe0358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0x2c4/0xa84 block/bdev.c:962

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

INFO: task udevd:3521 blocked for more than 450 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd           state:D stack:0     pid:3521  tgid:3521  ppid:3136   task_flags:0x400140 flags:0x00000019
Call trace:
 __switch_to+0x208/0x4f0 arch/arm64/kernel/process.c:741 (T)
 context_switch kernel/sched/core.c:5256 [inline]
 __schedule+0xd1c/0x3278 kernel/sched/core.c:6863
 __schedule_loop kernel/sched/core.c:6945 [inline]
 schedule+0xd0/0x344 kernel/sched/core.c:6960
 io_schedule+0xac/0x114 kernel/sched/core.c:7789
 folio_wait_bit_common+0x2a4/0x630 mm/filemap.c:1323
 folio_put_wait_locked mm/filemap.c:1487 [inline]
 do_read_cache_folio+0x240/0x3f4 mm/filemap.c:4078
 read_cache_folio+0x44/0x6c mm/filemap.c:4128
 read_mapping_folio include/linux/pagemap.h:1017 [inline]
 read_part_sector+0xac/0x5f4 block/partitions/core.c:722
 msdos_partition+0xe4/0x1f3c block/partitions/msdos.c:592
 check_partition block/partitions/core.c:141 [inline]
 blk_add_partitions block/partitions/core.c:589 [inline]
 bdev_disk_changed+0x504/0xf08 block/partitions/core.c:693
 blkdev_get_whole+0x144/0x1e4 block/bdev.c:765
 bdev_open+0x1dc/0xa84 block/bdev.c:974
 blkdev_open+0x270/0x3dc block/fops.c:698
 do_dentry_open+0x3f4/0x10e4 fs/open.c:962
 vfs_open+0x5c/0x2fc fs/open.c:1094
 do_open fs/namei.c:4628 [inline]
 path_openat+0x17f0/0x28cc fs/namei.c:4787
 do_filp_open+0x184/0x360 fs/namei.c:4814
 do_sys_openat2+0xe0/0x180 fs/open.c:1430
 do_sys_open fs/open.c:1436 [inline]
 __do_sys_openat fs/open.c:1452 [inline]
 __se_sys_openat fs/open.c:1447 [inline]
 __arm64_sys_openat+0x12c/0x1bc fs/open.c:1447
 __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+0x40/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x54/0x2b0 arch/arm64/kernel/entry-common.c:724
 el0t_64_sync_handler+0xa0/0xe4 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:
1 lock held by khungtaskd/32:
 #0: ffff8000875525e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x18/0x1c4 kernel/locking/lockdep.c:6769
2 locks held by syslogd/3121:
2 locks held by getty/3260:
 #0: ffff000018d4f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff80008d8eb2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x3e8/0xdd0 drivers/tty/n_tty.c:2211
1 lock held by udevd/3521:
 #0: ffff000014fe0358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0x2c4/0xa84 block/bdev.c:962

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