INFO: task syz-executor:17682 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:21832 pid:17682 tgid:17682 ppid:1      task_flags:0x400140 flags:0x00004006
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7e6/0x1350
 lmLogClose+0xb4/0x520
 jfs_umount+0x2ef/0x3c0
 jfs_put_super+0x8c/0x190
 generic_shutdown_super+0x135/0x2c0
 kill_block_super+0x44/0x90
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x425/0x4c0
 task_work_run+0x1d4/0x260
 exit_to_user_mode_loop+0xec/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd9d198fed7
RSP: 002b:00007ffcd27a8008 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fd9d1a11c05 RCX: 00007fd9d198fed7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcd27a80c0
RBP: 00007ffcd27a80c0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffcd27a9150
R13: 00007fd9d1a11c05 R14: 000000000009af1a R15: 00007ffcd27a9190
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e13a0e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5680:
 #0: ffff8880272600a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900029062f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
1 lock held by syz.8.990/16435:
 #0: ffff8880284c40e0 (&type->s_umount_key#60){++++}-{4:4}, at: super_lock+0x2a9/0x3b0
1 lock held by syz.8.990/16438:
 #0: ffff8880284c40e0 (&type->s_umount_key#60){++++}-{4:4}, at: super_lock+0x2a9/0x3b0
1 lock held by syz.8.990/16440:
 #0: ffff8880284c40e0 (&type->s_umount_key#60){++++}-{4:4}, at: super_lock+0x2a9/0x3b0
2 locks held by syz-executor/16764:
 #0: ffff8880284c40e0 (&type->s_umount_key#60){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8e56eb28 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
2 locks held by syz-executor/17682:
 #0: ffff888128a4a0e0 (&type->s_umount_key#60){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8e56eb28 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
1 lock held by syz.9.1262/18496:
 #0: ffff8880284c40e0 (&type->s_umount_key#60){++++}-{4:4}, at: super_lock+0x2a9/0x3b0
1 lock held by syz.1.1447/19328:
 #0: ffff8880284c40e0 (&type->s_umount_key#60){++++}-{4:4}, at: super_lock+0x2a9/0x3b0
1 lock held by syz.5.1634/20357:
 #0: ffff888128a4a0e0 (&type->s_umount_key#60){++++}-{4:4}, at: super_lock+0x2a9/0x3b0
2 locks held by syz-executor/20857:
 #0: ffff8880206120e0 (&type->s_umount_key#60){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8e56eb28 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
2 locks held by syz.8.1807/21402:
 #0: ffff88810978e428 (sb_writers#3){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x160
 #1: ffff8880284c40e0 (&type->s_umount_key#60){++++}-{4:4}, at: super_lock+0x2a9/0x3b0

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 34 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250
 nmi_cpu_backtrace+0x39e/0x3d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 watchdog+0xf93/0xfe0
 kthread+0x711/0x8a0
 ret_from_fork+0x439/0x7d0
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 13731 Comm: kworker/u8:0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: bat_events batadv_nc_worker
RIP: 0010:lock_acquire+0xc9/0x360
Code: 03 11 85 c0 0f 85 eb 00 00 00 65 48 8b 04 25 08 b0 a0 92 83 b8 ec 0a 00 00 00 0f 85 d5 00 00 00 48 c7 44 24 30 00 00 00 00 9c <8f> 44 24 30 4c 89 74 24 10 4d 89 fe 4c 8b 7c 24 30 fa 48 c7 c7 90
RSP: 0018:ffffc90002e1f978 EFLAGS: 00000246
RAX: ffff88802231b980 RBX: 0000000000000000 RCX: 610e84ea983da500
RDX: 0000000000000000 RSI: ffffffff8b47d89f RDI: 1ffffffff1c2741c
RBP: ffffffff8b47d882 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffffff8b47d7b0 R12: 0000000000000002
R13: ffffffff8e13a0e0 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881a3c15000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000024c0 CR3: 0000000125e8e000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 batadv_nc_worker+0xef/0x610
 process_scheduled_works+0xae1/0x17b0
 worker_thread+0x8a0/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x439/0x7d0
 ret_from_fork_asm+0x1a/0x30
 </TASK>
