INFO: task syz-executor:7751 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:22264 pid:7751  tgid:7751  ppid:1      task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x17b4/0x5680
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7f7/0x1550
 lmLogClose+0xb4/0x520
 jfs_umount+0x2fb/0x3d0
 jfs_put_super+0x8c/0x190
 generic_shutdown_super+0x13d/0x2d0
 kill_block_super+0x44/0x90
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x437/0x4d0
 task_work_run+0x1d9/0x270
 exit_to_user_mode_loop+0xed/0x480
 do_syscall_64+0x33e/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f907cf9e017
RSP: 002b:00007ffdea7a9f38 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f907d032120 RCX: 00007f907cf9e017
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdea7a9ff0
RBP: 00007ffdea7a9ff0 R08: 00007ffdea7aaff0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdea7ab080
R13: 00007f907d032120 R14: 00000000000271b9 R15: 00007ffdea7ab0c0
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e95cda0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5437:
 #0: ffff888115c4b0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc9000346b2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13a0
3 locks held by kworker/u11:2/5610:
 #0: ffff888037393140 ((wq_completion)hci12){+.+.}-{0:0}, at: process_scheduled_works+0xa35/0x1860
 #1: ffffc900044ffc40 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0xa70/0x1860
 #2: ffff888117228ea0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x1d3/0x400
2 locks held by syz-executor/7727:
 #0: ffff88816adb20d8 (&type->s_umount_key#96){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8edf9440 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
2 locks held by syz-executor/7751:
 #0: ffff8881154ae0d8 (&type->s_umount_key#96){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8edf9440 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
2 locks held by syz-executor/7925:
 #0: ffff88816b3d00d8 (&type->s_umount_key#96){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8edf9440 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
2 locks held by syz-executor/8054:
 #0: ffff88816c4c20d8 (&type->s_umount_key#96){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8edf9440 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
1 lock held by syz.9.425/9320:
 #0: ffff88816adb20d8 (&type->s_umount_key#96){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.6.453/9418:
 #0: ffff88816adb20d8 (&type->s_umount_key#96){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
2 locks held by syz-executor/9451:
 #0: ffff8881b99320d8 (&type->s_umount_key#96){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8edf9440 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
2 locks held by syz-executor/9621:
 #0: ffff8881136d80d8 (&type->s_umount_key#96){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8edf9440 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
1 lock held by syz.1.505/10079:
 #0: ffff88816c4c20d8 (&type->s_umount_key#96){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.0.654/11320:
 #0: ffff8881154ae0d8 (&type->s_umount_key#96){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz-executor/11563:
1 lock held by syz.2.713/11752:
 #0: ffff88816adb20d8 (&type->s_umount_key#96){++++}-{4:4}, at: super_lock+0x2d6/0x3d0

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

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+0xe8/0x150
 nmi_cpu_backtrace+0x274/0x2d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 sys_info+0x135/0x170
 watchdog+0xfd3/0x1030
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 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: 5537 Comm: syz-executor 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
RIP: 0010:native_apic_msr_write+0x39/0x50
Code: 74 2a 83 ff 30 74 25 eb 10 81 ff d0 00 00 00 74 1b 81 ff e0 00 00 00 74 13 c1 ef 04 81 c7 00 08 00 00 89 f9 89 f0 31 d2 0f 30 <66> 90 e9 00 c9 35 0a cc 89 f6 31 d2 e9 76 a8 7a 03 66 0f 1f 44 00
RSP: 0018:ffffc9000437f7b0 EFLAGS: 00000046
RAX: 00000000000162b1 RBX: ffff88823c623e40 RCX: 0000000000000838
RDX: 0000000000000000 RSI: 00000000000162b1 RDI: 0000000000000838
RBP: ffffc9000437f870 R08: ffffffff81b2d0e5 R09: ffffffff9a48a5c8
R10: 0000000000000003 R11: ffffffff817436c0 R12: 00000000000162b1
R13: dffffc0000000000 R14: 00000000100001ad R15: 0000000000000020
FS:  000055555eb9a540(0000) GS:ffff8882a9290000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2d2c1ea2f8 CR3: 000000016a3d4000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 lapic_next_event+0x11/0x20
 clockevents_program_event+0x385/0x630
 hrtimer_start_range_ns+0x940/0xed0
 finish_task_switch+0x3cd/0xbe0
 __schedule+0x17bc/0x5680
 schedule+0x164/0x360
 do_nanosleep+0x1c2/0x620
 hrtimer_nanosleep+0x18f/0x3a0
 __se_sys_clock_nanosleep+0x35b/0x3b0
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa960b57f57
Code: 48 89 fa 4c 89 df e8 a8 56 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffe3de93500 EFLAGS: 00000202 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 000055555eb9a540 RCX: 00007fa960b57f57
RDX: 00007ffe3de93540 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffe3de93a20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004
R13: 00007ffe3de9357c R14: 00007ffe3de93610 R15: 0000000000000000
 </TASK>
