INFO: task syz-executor:12201 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:21736 pid:12201 tgid:12201 ppid:1      task_flags:0x400140 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 io_schedule+0x80/0xd0
 folio_wait_bit_common+0x6b0/0xb90
 __filemap_get_folio+0x139/0xaf0
 truncate_inode_pages_range+0x3ed/0xda0
 evict+0x517/0x9c0
 evict_inodes+0x64c/0x6d0
 generic_shutdown_super+0x9a/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: 0033:0x7ff32698fed7
RSP: 002b:00007ffd5e946638 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007ff326a11c05 RCX: 00007ff32698fed7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd5e9466f0
RBP: 00007ffd5e9466f0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffd5e947780
R13: 00007ff326a11c05 R14: 000000000004a9ae R15: 00007ffd5e9477c0
 </TASK>

Showing all locks held in the system:
3 locks held by kworker/1:0/24:
1 lock held by khungtaskd/34:
 #0: ffffffff8e13a0e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
3 locks held by kworker/1:2/793:
2 locks held by getty/5678:
 #0: ffff88802804d0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900029032f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
6 locks held by kworker/u8:2/5722:
3 locks held by kworker/1:7/9280:
 #0: ffff88801a480d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc9000292fbc0 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffff888043f3e240 (&data->fib_lock){+.+.}-{4:4}, at: nsim_fib_event_work+0x26b/0x3180
1 lock held by syz-executor/12201:
 #0: ffff88801f5d60e0 (&type->s_umount_key#88){+.+.}-{4:4}, at: deactivate_super+0xa9/0xe0
2 locks held by syz-executor/13376:
 #0: ffff88802b56c0e0 (&type->s_umount_key#65){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8e56eb28 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
2 locks held by syz-executor/13904:
 #0: ffff88803f8900e0 (&type->s_umount_key#65){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8e56eb28 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
2 locks held by syz-executor/15401:
 #0: ffff88810aed80e0 (&type->s_umount_key#65){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8e56eb28 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
2 locks held by syz-executor/15796:
 #0: ffff88803b0360e0 (&type->s_umount_key#65){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8e56eb28 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
2 locks held by syz-executor/16435:
 #0: ffff88810a5340e0 (&type->s_umount_key#65){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8e56eb28 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
1 lock held by syz.4.2361/17175:
 #0: ffff88802b56c0e0 (&type->s_umount_key#65){++++}-{4:4}, at: super_lock+0x2a9/0x3b0
2 locks held by dhcpcd-run-hook/17252:

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

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: 101 PID: 15710 Comm: dhcpcd 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:folio_lruvec_lock_irqsave+0x7a/0x1d0
Code: e8 ab 52 f8 ff 48 8b 03 48 83 f8 ff 0f 84 48 01 00 00 48 c1 e8 3a 4c 8d 24 c5 00 ec b2 99 4c 89 e0 48 c1 e8 03 42 80 3c 30 00 <74> 08 4c 89 e7 e8 7c 52 f8 ff 49 8b 04 24 48 89 04 24 0f 1f 44 00
RSP: 0018:ffffc900041df558 EFLAGS: 00000246
RAX: 1ffffffff3365d80 RBX: ffffea0000ef4e00 RCX: ffff88810e8f5640
RDX: 0000000000000000 RSI: ffffc900041df680 RDI: ffffea0000ef4e00
RBP: ffffc900041df680 R08: ffffea0000ef4e07 R09: 1ffffd40001de9c0
R10: dffffc0000000000 R11: fffff940001de9c1 R12: ffffffff99b2ec00
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88801b6f0000
FS:  0000000000000000(0000) GS:ffff8881a3c15000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055bee42cc680 CR3: 000000000df36000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 __page_cache_release+0x21c/0xc10
 folios_put_refs+0x37d/0x640
 free_pages_and_swap_cache+0x277/0x520
 tlb_flush_mmu+0x3a0/0x680
 tlb_finish_mmu+0xc3/0x1d0
 exit_mmap+0x44c/0xb50
 __mmput+0x118/0x430
 exit_mm+0x1da/0x2c0
 do_exit+0x648/0x2300
 do_group_exit+0x21c/0x2d0
 __x64_sys_exit_group+0x3f/0x40
 x64_sys_call+0x21f7/0x2200
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f53c5f83a90
Code: Unable to access opcode bytes at 0x7f53c5f83a66.
RSP: 002b:00007ffe3f829ab8 EFLAGS: 00000202 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f53c5ed36c0 RCX: 00007f53c5f83a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00007ffe3f829b38 R08: 0000000000000007 R09: 4acd9b2d9e19dd9d
R10: 0000000000000120 R11: 0000000000000202 R12: 0000000000000000
R13: 00007ffe3f82a108 R14: 0000000000000003 R15: 0000000000000000
 </TASK>
