INFO: task syz-executor:11893 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:18856 pid:11893 tgid:11893 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: 0033:0x7fa98f38ff17
RSP: 002b:00007fffac53dca8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fa98f411c05 RCX: 00007fa98f38ff17
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffac53dd60
RBP: 00007fffac53dd60 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fffac53edf0
R13: 00007fa98f411c05 R14: 000000000005b123 R15: 00007fffac53ee30
 </TASK>

Showing all locks held in the system:
5 locks held by kworker/u9:1/28:
1 lock held by khungtaskd/34:
 #0: ffffffff8e139f20 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5676:
 #0: ffff888107cd90a0 (&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
1 lock held by syz-executor/11893:
 #0: ffff888029bce0e0 (&type->s_umount_key#122){+.+.}-{4:4}, at: deactivate_super+0xa9/0xe0
3 locks held by syz.0.1009/16018:
2 locks held by syz.5.1012/16031:
2 locks held by syz.2.1013/16033:

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

NMI backtrace for cpu 1
CPU: 1 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+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 16031 Comm: syz.5.1012 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:__sanitizer_cov_trace_const_cmp8+0x37/0x90
Code: 08 b0 a0 92 65 8b 15 58 fc e0 10 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 57 83 b9 3c 16 00 00 00 74 4e 8b 91 18 16 00 00 <83> fa 03 75 43 48 8b 91 20 16 00 00 44 8b 89 1c 16 00 00 49 c1 e1
RSP: 0018:ffffc9000384f638 EFLAGS: 00000046
RAX: ffffffff81faa9c1 RBX: ffffea0000f58680 RCX: ffff88810802d640
RDX: 0000000000000002 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffffd40001eb0d0 R08: ffffea0000f58687 R09: 1ffffd40001eb0d0
R10: dffffc0000000000 R11: fffff940001eb0d1 R12: dffffc0000000000
R13: dffffc0000000001 R14: 0000000000000000 R15: ffffea0000f58688
FS:  00007f00d12706c0(0000) GS:ffff8880b8615000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555800c25c8 CR3: 00000001330f0000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 lru_add+0x301/0xd80
 folio_batch_move_lru+0x21e/0x3a0
 __folio_batch_add_and_move+0x5ad/0xd20
 shmem_alloc_and_add_folio+0xcb3/0xf60
 shmem_get_folio_gfp+0x59d/0x1660
 shmem_write_begin+0xf7/0x2b0
 generic_perform_write+0x2c5/0x900
 shmem_file_write_iter+0xf8/0x120
 vfs_write+0x5c9/0xb30
 ksys_write+0x145/0x250
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f00d038d69f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007f00d126fdf0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000001000000 RCX: 00007f00d038d69f
RDX: 0000000001000000 RSI: 00007f00c6000000 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000005a7e
R10: 0000200000001082 R11: 0000000000000293 R12: 0000000000000003
R13: 00007f00d126fef0 R14: 00007f00d126feb0 R15: 00007f00c6000000
 </TASK>
