INFO: task udevd:28702 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:26504 pid:28702 tgid:28702 ppid:5047   task_flags:0x400140 flags:0x00080802
Call Trace:
 <TASK>
 __schedule+0x17d9/0x56c0
 schedule+0x164/0x2b0
 io_schedule+0x7f/0xd0
 folio_wait_bit_common+0x836/0xbc0
 do_read_cache_folio+0x1ac/0x590
 read_part_sector+0xb6/0x2b0
 adfspart_check_POWERTEC+0x9a/0x7a0
 bdev_disk_changed+0x851/0x17a0
 blkdev_get_whole+0x372/0x510
 bdev_open+0x324/0xd70
 blkdev_open+0x461/0x600
 do_dentry_open+0x816/0x1380
 vfs_open+0x3b/0x340
 path_openat+0x2e44/0x3830
 do_file_open+0x23e/0x4a0
 do_sys_openat2+0x115/0x200
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff6bef169a4
RSP: 002b:00007ffdc1c62e50 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000055fef5b9c780 RCX: 00007ff6bef169a4
RDX: 00000000000a0800 RSI: 000055fef5b92cc0 RDI: 00000000ffffff9c
RBP: 000055fef5b92cc0 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 000055fef5b8daa0 R14: 0000000000000001 R15: 000055fef5b7c910
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/35:
 #0: ffffffff8eb59c60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5429:
 #0: ffff8881120d50a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900033f82e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45a/0x1360
1 lock held by udevd/28702:
 #0: ffff888109d9d350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xde/0xd70

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 35 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/0x380
 sys_info+0x135/0x170
 watchdog+0xfd7/0x1030
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 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: 5029 Comm: syslogd 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:prepare_to_wait_exclusive+0x124/0x230
Code: 56 40 48 89 d0 48 c1 e8 03 42 80 3c 38 00 74 0c 48 89 d7 e8 1e f3 94 00 49 8d 56 40 49 8b 46 40 48 39 d0 0f 94 c0 89 44 24 04 <49> 8d 4e 48 49 89 cf 49 c1 ef 03 48 b8 00 00 00 00 00 fc ff df 41
RSP: 0018:ffffc90005ca7850 EFLAGS: 00000046
RAX: ffff888107859801 RBX: 0000000000000001 RCX: 0000000000000001
RDX: ffff8881078598c0 RSI: 0000000000000004 RDI: ffffc90005ca77c0
RBP: ffffc90005ca7918 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000b94ef8 R12: ffffc90005ca7900
R13: 1ffff92000b94f23 R14: ffff888107859880 R15: dffffc0000000000
FS:  00007f5df5d8c380(0000) GS:ffff88818d952000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6d75bef2f8 CR3: 0000000113ffc000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 __skb_wait_for_more_packets+0x145/0x590
 __unix_dgram_recvmsg+0x28c/0xd70
 sock_recvmsg+0x196/0x1e0
 sock_read_iter+0x22a/0x2f0
 vfs_read+0x595/0xa80
 ksys_read+0x150/0x270
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5df5ee0b6a
Code: 00 3d 00 00 41 00 75 0d 50 48 8d 3d 2d 08 0a 00 e8 ea 7d 01 00 31 c0 e9 07 ff ff ff 64 8b 04 25 18 00 00 00 85 c0 75 1b 0f 05 <48> 3d 00 f0 ff ff 76 6c 48 8b 15 8f a2 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffc266fe2e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5df5ee0b6a
RDX: 00000000000000ff RSI: 000055de39946950 RDI: 0000000000000000
RBP: 000055de39946910 R08: 0000000000000000 R09: 0000000000000000
R10: 000055de39946f00 R11: 0000000000000246 R12: 000055de399469a2
R13: 000055de39946950 R14: 0000000000000000 R15: 00007f5df60c5a80
 </TASK>
