XFS (loop4): Unmounting Filesystem
XFS (loop1): Unmounting Filesystem
INFO: task syz-executor.5:9579 blocked for more than 140 seconds.
      Not tainted 4.19.211-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.5  D26136  9579   8149 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
 xlog_grant_head_wait+0x13b/0xcd0 fs/xfs/xfs_log.c:263
 xlog_grant_head_check+0x3c8/0x420 fs/xfs/xfs_log.c:325
 xfs_log_reserve+0x347/0xa70 fs/xfs/xfs_log.c:454
 xfs_trans_reserve+0x63a/0x9c0 fs/xfs/xfs_trans.c:197
 xfs_trans_alloc+0x2f7/0x700 fs/xfs/xfs_trans.c:289
 xfs_qm_qino_alloc+0x19a/0x950 fs/xfs/xfs_qm.c:777
XFS (loop2): DAX enabled. Warning: EXPERIMENTAL, use at your own risk
XFS (loop2): DAX unsupported by block device. Turning off DAX.
 xfs_qm_init_quotainos+0x563/0x730 fs/xfs/xfs_qm.c:1548
XFS (loop2): Mounting V4 Filesystem
XFS (loop2): Ending clean mount
 xfs_qm_init_quotainfo+0x146/0xd70 fs/xfs/xfs_qm.c:659
XFS (loop2): Quotacheck needed: Please wait.
XFS (loop2): Quotacheck: Done.
 xfs_qm_mount_quotas+0x55/0x680 fs/xfs/xfs_qm.c:1432
 xfs_mountfs+0x17e2/0x1bf0 fs/xfs/xfs_mount.c:1001
 xfs_fs_fill_super+0xd0e/0x1540 fs/xfs/xfs_super.c:1720
 mount_bdev+0x2fc/0x3b0 fs/super.c:1158
 mount_fs+0xa3/0x310 fs/super.c:1261
 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
 vfs_kern_mount fs/namespace.c:951 [inline]
 do_new_mount fs/namespace.c:2492 [inline]
 do_mount+0x115c/0x2f50 fs/namespace.c:2822
 ksys_mount+0xcf/0x130 fs/namespace.c:3038
 __do_sys_mount fs/namespace.c:3052 [inline]
 __se_sys_mount fs/namespace.c:3049 [inline]
 __x64_sys_mount+0xba/0x150 fs/namespace.c:3049
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f92fa12d5fa
Code: Bad RIP value.
RSP: 002b:00007f92f869df88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 000000000000baed RCX: 00007f92fa12d5fa
XFS (loop3): DAX enabled. Warning: EXPERIMENTAL, use at your own risk
XFS (loop3): DAX unsupported by block device. Turning off DAX.
XFS (loop3): Mounting V4 Filesystem
RDX: 000000002000bb00 RSI: 0000000020000040 RDI: 00007f92f869dfe0
RBP: 00007f92f869e020 R08: 00007f92f869e020 R09: 0000000000000000
XFS (loop3): Ending clean mount
R10: 0000000000000000 R11: 0000000000000202 R12: 000000002000bb00
XFS (loop3): Quotacheck needed: Please wait.
R13: 0000000020000040 R14: 00007f92f869dfe0 R15: 0000000020000240
XFS (loop3): Quotacheck: Done.

Showing all locks held in the system:
audit: type=1800 audit(1675718535.427:4407): pid=14301 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="bus" dev="loop3" ino=42 res=0
3 locks held by kauditd/34:
XFS (loop2): Unmounting Filesystem
1 lock held by khungtaskd/1570:
 #0: 0000000061d549a9 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441
audit: type=1800 audit(1675718535.427:4408): pid=14301 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="bus" dev="loop3" ino=42 res=0
1 lock held by in:imklog/7799:
 #0: 0000000094c63c7e (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767
1 lock held by syz-executor.3/8147:
 #0: 00000000395283d8 (rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline]
 #0: 00000000395283d8 (rcu_preempt_state.exp_mutex){+.+.}, at: _synchronize_rcu_expedited+0x4dc/0x6f0 kernel/rcu/tree_exp.h:667
2 locks held by kworker/1:0/24994:
 #0: 000000000281ce6c ((wq_completion)"rcu_gp"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
 #1: 00000000dd8c5ff0 ((work_completion)(&rew.rew_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
2 locks held by syz-executor.5/9579:
 #0: 00000000490b3440 (&type->s_umount_key#49/1){+.+.}, at: alloc_super fs/super.c:226 [inline]
 #0: 00000000490b3440 (&type->s_umount_key#49/1){+.+.}, at: sget_userns+0x20b/0xcd0 fs/super.c:519
XFS (loop4): DAX enabled. Warning: EXPERIMENTAL, use at your own risk
 #1: 0000000010bf2c5b (sb_internal#2){.+.+}, at: sb_start_intwrite include/linux/fs.h:1626 [inline]
 #1: 0000000010bf2c5b (sb_internal#2){.+.+}, at: xfs_trans_alloc+0x4fc/0x700 fs/xfs/xfs_trans.c:271
1 lock held by syz-executor.4/14311:
2 locks held by syz-executor.1/14315:

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

NMI backtrace for cpu 0
XFS (loop3): Unmounting Filesystem
CPU: 0 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
 watchdog+0x991/0xe60 kernel/hung_task.c:287
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 770 Comm: kworker/u4:1 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:mark_held_locks+0x86/0xf0 kernel/locking/lockdep.c:2802
Code: c5 03 4d 8d bd 88 08 00 00 48 63 c3 48 8d 04 80 49 8d 34 c7 48 8d 7e 22 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 42 0f b6 04 30 <38> d0 7f 04 84 c0 75 4c 0f b6 46 22 44 89 e2 a8 03 0f 45 d5 a8 04
RSP: 0018:ffff88804f517bc8 EFLAGS: 00000002
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 1ffff11008c221a2
RDX: 0000000000000002 RSI: ffff888046110cc8 RDI: ffff888046110cea
RBP: 0000000000000007 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000006
R13: ffff888046110440 R14: dffffc0000000000 R15: ffff888046110cc8
FS:  0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fec46c00000 CR3: 000000009858b000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __trace_hardirqs_on_caller kernel/locking/lockdep.c:2839 [inline]
 lockdep_hardirqs_on+0x3a8/0x5c0 kernel/locking/lockdep.c:2884
 __local_bh_enable_ip+0x159/0x270 kernel/softirq.c:194
 spin_unlock_bh include/linux/spinlock.h:374 [inline]
 batadv_nc_purge_paths+0x22d/0x310 net/batman-adv/network-coding.c:482
 batadv_nc_worker+0x731/0xd50 net/batman-adv/network-coding.c:733
 process_one_work+0x864/0x1570 kernel/workqueue.c:2153
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
XFS (loop4): DAX unsupported by block device. Turning off DAX.