INFO: task syz-executor:6462 blocked for more than 143 seconds.
      Not tainted 6.17.0-rc1-syzkaller-00036-gdfc0f6373094-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:21416 pid:6462  tgid:6462  ppid:1      task_flags:0x400140 flags:0x00004006
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7e6/0x1360
 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: 0033:0x7f6fe358ff17
RSP: 002b:00007ffeaf9de378 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f6fe3611c05 RCX: 00007f6fe358ff17
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffeaf9de430
RBP: 00007ffeaf9de430 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffeaf9df4c0
R13: 00007f6fe3611c05 R14: 00000000000162f9 R15: 00007ffeaf9df500
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e139ee0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5675:
 #0: ffff888106a850a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900028fb2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
3 locks held by kworker/u8:2/5716:
2 locks held by syz-executor/6347:
 #0: ffff8880355b00e0 (&type->s_umount_key#58){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8e56dee8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
2 locks held by syz-executor/6462:
 #0: ffff8881209940e0 (&type->s_umount_key#58){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8e56dee8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
2 locks held by syz.6.1066/11069:
 #0: ffff888032ea20e0 (&type->s_umount_key#58){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8e56dee8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
2 locks held by syz.2.1209/11696:
1 lock held by syz.8.1213/11703:
1 lock held by syz.0.1217/11719:

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 34 Comm: khungtaskd Not tainted 6.17.0-rc1-syzkaller-00036-gdfc0f6373094-dirty #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+0x3fc/0x770
 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: 11703 Comm: syz.8.1213 Not tainted 6.17.0-rc1-syzkaller-00036-gdfc0f6373094-dirty #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:__add_to_free_list+0x1cb/0x3d0
Code: 00 74 08 4c 89 ff e8 44 6e 0c 00 49 89 1f e9 d9 00 00 00 83 fd 07 0f 83 fd 01 00 00 49 c1 e7 04 4d 01 ef 4c 89 fb 48 c1 eb 03 <48> b8 00 00 00 00 00 fc ff df 80 3c 03 00 74 08 4c 89 ff e8 1d 6d
RSP: 0018:ffffc900044e76c8 EFLAGS: 00000806
RAX: 0000000000000000 RBX: 1ffff11027fff0b7 RCX: 0000000000000000
RDX: 0000000000000017 RSI: 000000000010de20 RDI: ffffea0004378800
RBP: 0000000000000000 R08: 0000000000000000 R09: 1ffffd400086f106
R10: dffffc0000000000 R11: fffff9400086f107 R12: ffffea0004378800
R13: ffff88813fff85b8 R14: ffffea0004378808 R15: ffff88813fff85b8
FS:  000055555f459500(0000) GS:ffff8881a3c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd626887e20 CR3: 000000000df36000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 __free_one_page+0x6df/0xbd0
 free_pcppages_bulk+0x2da/0x4e0
 free_frozen_page_commit+0x62c/0x1070
 __free_frozen_pages+0x67f/0xd30
 vfree+0x25a/0x400
 kcov_close+0x28/0x50
 __fput+0x44c/0xa70
 task_work_run+0x1d4/0x260
 do_exit+0x6b5/0x2300
 do_group_exit+0x21c/0x2d0
 get_signal+0x1286/0x1340
 arch_do_signal_or_restart+0x9a/0x750
 exit_to_user_mode_loop+0x75/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f833c9c14a5
Code: Unable to access opcode bytes at 0x7f833c9c147b.
RSP: 002b:00007ffe421b1700 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 0000000000000005 RCX: 00007f833c9c14a5
RDX: 00007ffe421b1740 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000003 R08: 0000000000000000 R09: 00000000000000ec
R10: 0000000000000000 R11: 0000000000000293 R12: 00007f833cbb5fac
R13: 00007f833cbb5fa0 R14: ffffffffffffffff R15: 00007ffe421b1880
 </TASK>
