INFO: task syz.1.22:4510 blocked for more than 145 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.22        state:D stack:0     pid:4510  ppid:4322   flags:0x00000809
Call trace:
 __switch_to+0x2f4/0x550 arch/arm64/kernel/process.c:555
 context_switch kernel/sched/core.c:5245 [inline]
 __schedule+0xdd0/0x1b0c kernel/sched/core.c:6562
 schedule+0xc4/0x170 kernel/sched/core.c:6638
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6697
 rwsem_down_read_slowpath+0x4b8/0x79c kernel/locking/rwsem.c:1094
 __down_read_common kernel/locking/rwsem.c:1261 [inline]
 __down_read kernel/locking/rwsem.c:1274 [inline]
 down_read+0xa8/0x300 kernel/locking/rwsem.c:1522
 iterate_supers+0xa8/0x1d0 fs/super.c:755
 quota_sync_all fs/quota/quota.c:69 [inline]
 __do_sys_quotactl fs/quota/quota.c:937 [inline]
 __se_sys_quotactl fs/quota/quota.c:916 [inline]
 __arm64_sys_quotactl+0x3a4/0x77c fs/quota/quota.c:916
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x1fc/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585

Showing all locks held in the system:
2 locks held by kworker/u4:1/11:
1 lock held by rcu_tasks_kthre/12:
 #0: ffff8000153e7c30 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x40/0xbb4 kernel/rcu/tasks.h:517
1 lock held by rcu_tasks_trace/13:
 #0: ffff8000153e8450 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x40/0xbb4 kernel/rcu/tasks.h:517
1 lock held by khungtaskd/28:
 #0: ffff8000153e72c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:349
2 locks held by kworker/u4:4/1580:
2 locks held by getty/4077:
 #0: ffff0000d6aa6098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff80001df932f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x2ec/0xfa0 drivers/tty/n_tty.c:2198
2 locks held by udevd/4311:
 #0: ffff0000c0497538 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:768 [inline]
 #0: ffff0000c0497538 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: blkdev_read_iter+0x37c/0x4cc block/fops.c:667
 #1: ffff0000c04976d8 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:813 [inline]
 #1: ffff0000c04976d8 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_update_page mm/filemap.c:2542 [inline]
 #1: ffff0000c04976d8 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_get_pages mm/filemap.c:2689 [inline]
 #1: ffff0000c04976d8 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_read+0x750/0x2104 mm/filemap.c:2759
1 lock held by udevd/4313:
2 locks held by syz-executor/4321:
 #0: ffff0000c36240e0 (&type->s_umount_key#49){++++}-{3:3}, at: deactivate_super+0xdc/0x104 fs/super.c:362
 #1: ffff8000157cf1c8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb0/0x4c8 fs/jfs/jfs_logmgr.c:1444
2 locks held by syz-executor/4329:
 #0: ffff0000f2bc40e0 (&type->s_umount_key#49){++++}-{3:3}, at: deactivate_super+0xdc/0x104 fs/super.c:362
 #1: ffff8000157cf1c8 (jfs_log_mutex){+.+.}-{3:3}, at: lmLogClose+0xb0/0x4c8 fs/jfs/jfs_logmgr.c:1444
1 lock held by syz.1.22/4510:
 #0: ffff0000c36240e0 (&type->s_umount_key#49){++++}-{3:3}, at: iterate_supers+0xa8/0x1d0 fs/super.c:755
3 locks held by kworker/u4:17/4834:
2 locks held by kworker/u4:20/4880:
 #0: ffff0000c0029138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x6b8/0x13a4 kernel/workqueue.c:2265
 #1: ffff800021ab7c20 ((work_completion)(&map->work)){+.+.}-{0:0}, at: process_one_work+0x6fc/0x13a4 kernel/workqueue.c:2267
2 locks held by kworker/u4:27/6335:
2 locks held by kworker/1:13/6418:
 #0: ffff0000c0020938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x6b8/0x13a4 kernel/workqueue.c:2265
 #1: ffff8000219f7c20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x6fc/0x13a4 kernel/workqueue.c:2267
1 lock held by syz.4.459/6506:
 #0: ffff0000dc2b60e0 (&type->s_umount_key#26/1){+.+.}-{3:3}, at: alloc_super+0x1a4/0x800 fs/super.c:228

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