INFO: task syz-executor.4:28543 blocked for more than 143 seconds.
      Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:    0 pid:28543 ppid: 28504 flags:0x00000001
Call trace:
 __switch_to+0x180/0x298 arch/arm64/kernel/process.c:557
 context_switch kernel/sched/core.c:5182 [inline]
 __schedule+0x414/0x5a0 kernel/sched/core.c:6494
 schedule+0x64/0xa4 kernel/sched/core.c:6570
 rwsem_down_write_slowpath+0x258/0x468 kernel/locking/rwsem.c:1182
 __down_write_common kernel/locking/rwsem.c:1297 [inline]
 __down_write kernel/locking/rwsem.c:1306 [inline]
 down_write+0x88/0xcc kernel/locking/rwsem.c:1553
 grab_super+0x44/0x140 fs/super.c:386
 sget+0xe0/0x268 fs/super.c:634
 mount_bdev+0xcc/0x210 fs/super.c:1371
 qnx6_mount+0x44/0x58 fs/qnx6/inode.c:643
 legacy_get_tree+0x30/0x74 fs/fs_context.c:610
 vfs_get_tree+0x40/0x140 fs/super.c:1530
 do_new_mount+0x1dc/0x4e4 fs/namespace.c:3040
 path_mount+0x358/0x914 fs/namespace.c:3370
 do_mount fs/namespace.c:3383 [inline]
 __do_sys_mount fs/namespace.c:3591 [inline]
 __se_sys_mount fs/namespace.c:3568 [inline]
 __arm64_sys_mount+0x2c4/0x3c4 fs/namespace.c:3568
 __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+0x48/0x164 arch/arm64/kernel/syscall.c:206
 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:636
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:654
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/11:
 #0: ffff80000d433568 (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: ffff80000d433bb8 (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: ffff80000d433440 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:279
2 locks held by getty/2722:
 #0: ffff0000c73d0098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x28/0x58 drivers/tty/tty_ldisc.c:244
 #1: ffff80000f6162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x19c/0x89c drivers/tty/n_tty.c:2177
3 locks held by syz-executor.0/5935:
1 lock held by syz-executor.0/6033:
1 lock held by syz-executor.0/6034:
1 lock held by syz-executor.0/6098:
2 locks held by kworker/u4:14/15346:
1 lock held by syz-executor.4/28405:
 #0: ffff0000cb3f70e0 (&type->s_umount_key#109/1){+.+.}-{3:3}, at: alloc_super+0xf8/0x430 fs/super.c:228
2 locks held by syz-executor.4/28543:
 #0: ffff0000c59c2520 (&bdev->bd_fsfreeze_mutex){+.+.}-{3:3}, at: mount_bdev+0x80/0x210 fs/super.c:1365
 #1: ffff0000cb3f70e0 (&type->s_umount_key#110){++++}-{3:3}, at: grab_super+0x44/0x140 fs/super.c:386
1 lock held by syz-executor.4/29096:
 #0: ffff0000cb3f70e0 (&type->s_umount_key#110){++++}-{3:3}, at: iterate_supers+0x7c/0x150 fs/super.c:721
1 lock held by syz-executor.0/29473:

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