INFO: task syz-executor.1:16786 blocked for more than 143 seconds.
      Not tainted 6.2.0-rc4-syzkaller-16807-gedb2f0dc90f2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:0     pid:16786 ppid:16745  flags:0x00000001
Call trace:
 __switch_to+0x180/0x298 arch/arm64/kernel/process.c:556
 context_switch kernel/sched/core.c:5293 [inline]
 __schedule+0x438/0x5a0 kernel/sched/core.c:6606
 schedule+0x64/0xa4 kernel/sched/core.c:6682
 rwsem_down_write_slowpath+0x258/0x468 kernel/locking/rwsem.c:1190
 __down_write_common kernel/locking/rwsem.c:1305 [inline]
 __down_write kernel/locking/rwsem.c:1314 [inline]
 down_write+0x84/0x88 kernel/locking/rwsem.c:1563
 grab_super+0x44/0x140 fs/super.c:386
 sget+0xe0/0x268 fs/super.c:635
 mount_bdev+0xcc/0x210 fs/super.c:1330
 befs_mount+0x44/0x58 fs/befs/linuxvfs.c:977
 legacy_get_tree+0x30/0x74 fs/fs_context.c:610
 vfs_get_tree+0x40/0x140 fs/super.c:1489
 do_new_mount+0x1dc/0x4e4 fs/namespace.c:3145
 path_mount+0x358/0x890 fs/namespace.c:3475
 do_mount fs/namespace.c:3488 [inline]
 __do_sys_mount fs/namespace.c:3697 [inline]
 __se_sys_mount fs/namespace.c:3674 [inline]
 __arm64_sys_mount+0x2c4/0x3c4 fs/namespace.c:3674
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall arch/arm64/kernel/syscall.c:52 [inline]
 el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x48/0x104 arch/arm64/kernel/syscall.c:193
 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584
INFO: task syz-executor.1:16787 blocked for more than 143 seconds.
      Not tainted 6.2.0-rc4-syzkaller-16807-gedb2f0dc90f2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:0     pid:16787 ppid:16745  flags:0x00000001
Call trace:
 __switch_to+0x180/0x298 arch/arm64/kernel/process.c:556
 context_switch kernel/sched/core.c:5293 [inline]
 __schedule+0x438/0x5a0 kernel/sched/core.c:6606
 schedule+0x64/0xa4 kernel/sched/core.c:6682
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6741
 __mutex_lock_common+0x788/0xca8 kernel/locking/mutex.c:679
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799
 mount_bdev+0x80/0x210 fs/super.c:1324
 befs_mount+0x44/0x58 fs/befs/linuxvfs.c:977
 legacy_get_tree+0x30/0x74 fs/fs_context.c:610
 vfs_get_tree+0x40/0x140 fs/super.c:1489
 do_new_mount+0x1dc/0x4e4 fs/namespace.c:3145
 path_mount+0x358/0x890 fs/namespace.c:3475
 do_mount fs/namespace.c:3488 [inline]
 __do_sys_mount fs/namespace.c:3697 [inline]
 __se_sys_mount fs/namespace.c:3674 [inline]
 __arm64_sys_mount+0x2c4/0x3c4 fs/namespace.c:3674
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall arch/arm64/kernel/syscall.c:52 [inline]
 el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x48/0x104 arch/arm64/kernel/syscall.c:193
 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/11:
 #0: ffff80000d6556c8 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/12:
 #0: ffff80000d655d18 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/27:
 #0: ffff80000d6555a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:324
2 locks held by getty/4077:
 #0: ffff0000c2672898 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x28/0x58 drivers/tty/tty_ldisc.c:244
 #1: ffff80000f8662f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x19c/0x89c drivers/tty/n_tty.c:2177
2 locks held by kworker/u4:17/6274:
1 lock held by syz-executor.3/12496:
1 lock held by syz-executor.3/12661:
1 lock held by syz-executor.1/16645:
 #0: ffff00014a4570e0 (&type->s_umount_key#108/1){+.+.}-{3:3}, at: alloc_super+0xf8/0x430 fs/super.c:228
2 locks held by syz-executor.1/16786:
 #0: ffff0000c62af920 (&bdev->bd_fsfreeze_mutex){+.+.}-{3:3}, at: mount_bdev+0x80/0x210 fs/super.c:1324
 #1: ffff00014a4570e0 (&type->s_umount_key#109){+.+.}-{3:3}, at: grab_super+0x44/0x140 fs/super.c:386
1 lock held by syz-executor.1/16787:
 #0: ffff0000c62af920 (&bdev->bd_fsfreeze_mutex){+.+.}-{3:3}, at: mount_bdev+0x80/0x210 fs/super.c:1324
1 lock held by syz-executor.1/16846:
 #0: ffff0000c62af920 (&bdev->bd_fsfreeze_mutex){+.+.}-{3:3}, at: mount_bdev+0x80/0x210 fs/super.c:1324
1 lock held by syz-executor.3/17476:

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