INFO: task udevd:5617 blocked in I/O wait for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd           state:D stack:22088 pid:5617  tgid:5617  ppid:5066   task_flags:0x400140 flags:0x00080802
Call Trace:
 <TASK>
 __schedule+0x1821/0x5740
 schedule+0x164/0x360
 io_schedule+0x7f/0xd0
 folio_wait_bit_common+0x6d8/0xbc0
 do_read_cache_folio+0x1ad/0x590
 read_part_sector+0xb6/0x2b0
 adfspart_check_POWERTEC+0x9a/0x7a0
 bdev_disk_changed+0x817/0x1770
 blkdev_get_whole+0x380/0x510
 bdev_open+0x31e/0xd30
 blkdev_open+0x470/0x610
 do_dentry_open+0x822/0x13a0
 vfs_open+0x3b/0x340
 path_openat+0x2e08/0x3860
 do_file_open+0x23e/0x4a0
 do_sys_openat2+0x113/0x200
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f66e0f169a4
RSP: 002b:00007ffcfdb72430 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000055b33f197780 RCX: 00007f66e0f169a4
RDX: 00000000000a0800 RSI: 000055b33f18ca70 RDI: 00000000ffffff9c
RBP: 000055b33f18ca70 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 000055b33f18b800 R14: 0000000000000001 R15: 000055b33f177910
 </TASK>

Showing all locks held in the system:
3 locks held by kworker/u8:0/12:
1 lock held by khungtaskd/34:
 #0: ffffffff8e95cd20 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5444:
 #0: ffff888172ca70a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900034732e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13a0
1 lock held by udevd/5617:
 #0: ffff88811970e350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
3 locks held by kworker/u9:14/20268:
3 locks held by syz.0.6268/26698:
2 locks held by syz.2.6267/26701:
 #0: ffff8881b37f5c40 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: sock_close+0x9b/0x240
 #1: ffffffff8e963028 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2d0/0x770

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

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+0x389/0x470
 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: 26703 Comm: syz.2.6267 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+0x6d5/0x2cf0
Code: ba 08 00 00 00 e8 5b 44 00 00 31 ed 85 c0 0f 84 6d 0d 00 00 83 3d 0a b4 a1 18 00 75 13 48 63 44 24 18 48 0f a3 05 1b 24 9e 12 <0f> 83 8a 1e 00 00 49 8b 9e 80 0b 00 00 48 83 7c 24 28 00 75 19 83
RSP: 0018:ffffc9000a2a7168 EFLAGS: 00000047
RAX: 0000000000000007 RBX: ffff8881afe2e568 RCX: ffffffff93e0d8e8
RDX: 0000000000000008 RSI: ffff8881afe2e548 RDI: ffff8881afe2d940
RBP: 0000000000000000 R08: ffffffff823c9414 R09: ffffffff8e95cd20
R10: dffffc0000000000 R11: fffff940000f2f71 R12: 0000000000000003
R13: ffff8881afe2e548 R14: ffff8881afe2d940 R15: 0000000000000003
FS:  00007f5ff362b6c0(0000) GS:ffff8882a92a0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000795000 CR3: 000000010fb92000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 lock_acquire+0x106/0x350
 page_table_check_clear+0x141/0x4f0
 __zap_vma_range+0x365c/0x4b70
 unmap_vmas+0x3ac/0x570
 exit_mmap+0x280/0x9e0
 __mmput+0x118/0x430
 exit_mm+0x1f6/0x2d0
 do_exit+0x6a2/0x22c0
 do_group_exit+0x21b/0x2d0
 get_signal+0x1284/0x1330
 arch_do_signal_or_restart+0xbc/0x840
 exit_to_user_mode_loop+0xa9/0x680
 do_syscall_64+0x353/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5ff279ce59
Code: Unable to access opcode bytes at 0x7f5ff279ce2f.
RSP: 002b:00007f5ff362b0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f5ff2a15fa8 RCX: 00007f5ff279ce59
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f5ff2a15fa8
RBP: 00007f5ff2a15fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5ff2a16038 R14: 00007ffee4d26330 R15: 00007ffee4d26418
 </TASK>
