INFO: task syz-executor:7489 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:17824 pid:7489  tgid:7489  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: 0033:0x7fda2818ff17
RSP: 002b:00007ffe4bf0ae78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fda28211c05 RCX: 00007fda2818ff17
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe4bf0af30
RBP: 00007ffe4bf0af30 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffe4bf0bfc0
R13: 00007fda28211c05 R14: 0000000000037c87 R15: 00007ffe4bf0c000
 </TASK>

Showing all locks held in the system:
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/5673:
 #0: ffff88810d6450a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900029062f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
1 lock held by syz-executor/7489:
 #0: ffff8880118560e0 (&type->s_umount_key#98){+.+.}-{4:4}, at: deactivate_super+0xa9/0xe0
2 locks held by syz.6.1021/12406:

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

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+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: 12414 Comm: syz.7.1022 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:check_preemption_disabled+0x17/0x120
Code: 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41 56 53 48 83 ec 10 65 48 8b 05 be 9e 26 07 48 89 44 24 08 <65> 8b 05 c6 9e 26 07 65 8b 0d bb 9e 26 07 f7 c1 ff ff ff 7f 74 23
RSP: 0000:ffffc900041bfa50 EFLAGS: 00000086
RAX: 08c53db765e42300 RBX: 0000000000000000 RCX: 08c53db765e42300
RDX: 0000000000000000 RSI: ffffffff8d9cbe05 RDI: ffffffff8be33880
RBP: ffffffff822e619a R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed102125bd31 R12: 0000000000000002
R13: ffffffff8e139fe0 R14: 0000000000000000 R15: 0000000000000246
FS:  00007fb66eb876c0(0000) GS:ffff8881a3c18000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb66449b000 CR3: 0000000041906000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 lock_acquire+0xe7/0x360
 pfn_valid+0xd6/0x490
 page_table_check_set+0x25/0x730
 set_ptes+0x231/0x240
 __handle_mm_fault+0x3a51/0x5440
 handle_mm_fault+0x40a/0x8e0
 do_user_addr_fault+0xa81/0x1390
 exc_page_fault+0x76/0xf0
 asm_exc_page_fault+0x26/0x30
RIP: 0033:0x7fb66dc50c46
Code: f0 72 6e 48 63 cd 48 01 c1 49 39 4f 08 72 4c 8d 4d ff 85 ed 74 33 66 0f 1f 44 00 00 48 39 f0 72 1b 4d 8b 07 49 89 c1 49 29 f1 <47> 0f b6 0c 08 45 84 c9 74 08 45 88 0c 00 49 8b 47 10 48 83 c0 01
RSP: 002b:00007fb66eb864a0 EFLAGS: 00010206
RAX: 0000000000a9b001 RBX: 00007fb66eb86540 RCX: 0000000000000074
RDX: 0000000000000015 RSI: 0000000000000001 RDI: 00007fb66eb865e0
RBP: 0000000000000102 R08: 00007fb663a00000 R09: 0000000000a9b000
R10: 0000000000000000 R11: 00007fb66eb86550 R12: 0000000000000001
R13: 00007fb66de2da20 R14: 0000000000000000 R15: 00007fb66eb865e0
 </TASK>
