INFO: task syz-executor:22231 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:21608 pid:22231 tgid:22231 ppid:1      task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x17b4/0x5680
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7f5/0x1550
 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: 0033:0x7f684a79da57
RSP: 002b:00007ffe747fedd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f684a832048 RCX: 00007f684a79da57
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe747fee90
RBP: 00007ffe747fee90 R08: 00007ffe747ffe90 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe747fff20
R13: 00007f684a832048 R14: 00000000000831d2 R15: 00007ffe747fff60
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e95cce0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
3 locks held by kworker/u10:2/67:
 #0: ffff88823c63aea0 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x31/0x150
 #1: ffff88823c624588 (psi_seq){-.-.}-{0:0}, at: psi_task_switch+0x53/0x880
 #2: ffff888031280780 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: cfg80211_wiphy_work+0xb4/0x460
2 locks held by getty/5654:
 #0: ffff88816acee0a0 (&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
1 lock held by syz.3.1212/21269:
 #0: ffff8881057ae0d8 (&type->s_umount_key#79){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
2 locks held by syz-executor/21607:
 #0: ffff888172e180d8 (&type->s_umount_key#79){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8edfa500 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
2 locks held by syz-executor/21875:
 #0: ffff8881057ae0d8 (&type->s_umount_key#79){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8edfa500 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
2 locks held by syz-executor/22231:
 #0: ffff88816b0d60d8 (&type->s_umount_key#79){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8edfa500 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
2 locks held by syz-executor/23005:
 #0: ffff88816d8560d8 (&type->s_umount_key#79){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8edfa500 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
1 lock held by syz.5.1255/24271:
 #0: ffff8881057ae0d8 (&type->s_umount_key#79){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
2 locks held by syz-executor/24422:
 #0: ffff888032e100d8 (&type->s_umount_key#79){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8edfa500 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
1 lock held by syz.2.1311/25554:
 #0: ffff8881057ae0d8 (&type->s_umount_key#79){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.3.1362/26173:
 #0: ffff8881057ae0d8 (&type->s_umount_key#79){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.6.1395/27289:
 #0: ffff88816b0d60d8 (&type->s_umount_key#79){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.7.1406/27356:
 #0: ffff8881057ae0d8 (&type->s_umount_key#79){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz.0.1416/27383:
 #0: ffff888172e180d8 (&type->s_umount_key#79){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
2 locks held by syz-executor/27516:
 #0: ffff8881b18ce0d8 (&type->s_umount_key#79){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8edfa500 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
1 lock held by syz.8.1439/28471:
 #0: ffff88816d8560d8 (&type->s_umount_key#79){++++}-{4:4}, at: super_lock+0x289/0x3d0
1 lock held by syz-executor/29647:
 #0: ffff8881166200d8 (&type->s_umount_key#79){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
2 locks held by syz.3.1787/30984:
3 locks held by syz.5.1789/30988:

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

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: 30988 Comm: syz.5.1789 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:__lock_acquire+0x524/0x2cf0
Code: 00 48 83 c3 28 41 89 c4 49 39 cf 0f 8d c7 00 00 00 49 83 ff 31 0f 83 83 00 00 00 8b 03 25 ff 1f 00 00 48 0f a3 05 7c 0f a7 12 <73> 10 48 69 c0 c8 00 00 00 48 8d 88 70 e3 e9 93 eb 32 83 3d 43 9f
RSP: 0018:ffffc90007b4f4f8 EFLAGS: 00000007
RAX: 0000000000000622 RBX: ffff8881a90e46b0 RCX: 00000000ffffffff
RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8881a90e4708 R08: ffffffff8238b77e R09: ffffffff8e95cce0
R10: dffffc0000000000 R11: fffffbfff206755f R12: ffffffffffffff05
R13: ffff8881a90e4708 R14: ffff8881a90e3b00 R15: 0000000000000000
FS:  00007f0b863d66c0(0000) GS:ffff8882a920f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0b7c1ff000 CR3: 00000001ad1ea000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 lock_acquire+0x106/0x350
 lruvec_stat_mod_folio+0x8a/0x3e0
 shmem_add_to_page_cache+0xa2c/0xd40
 shmem_alloc_and_add_folio+0x866/0xf80
 shmem_get_folio_gfp+0x5a9/0x1670
 shmem_write_begin+0x16c/0x330
 generic_perform_write+0x2e2/0x8f0
 shmem_file_write_iter+0xf8/0x120
 vfs_write+0x61d/0xb90
 ksys_write+0x150/0x270
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0b8555d04e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007f0b863d5da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0b863d66c0 RCX: 00007f0b8555d04e
RDX: 0000000001000000 RSI: 00007f0b7b200000 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
R13: 00007f0b863d5ee0 R14: 00007f0b863d5ea0 R15: 00007f0b7b200000
 </TASK>
