INFO: task udevd:25334 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:21016 pid:25334 tgid:25334 ppid:5058   task_flags:0x400140 flags:0x00080802
Call Trace:
 <TASK>
 __schedule+0x17b4/0x5680
 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+0x785/0x14e0
 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+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f31ae5169a4
RSP: 002b:00007ffe00ba3ce0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00005639b01f8780 RCX: 00007f31ae5169a4
RDX: 00000000000a0800 RSI: 00005639b01e3e50 RDI: 00000000ffffff9c
RBP: 00005639b01e3e50 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 00005639b01eb120 R14: 0000000000000001 R15: 00005639b01d8910
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e95cd60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
1 lock held by kcompactd1/39:
2 locks held by getty/5435:
 #0: ffff888114c920a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc9000346b2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13a0
1 lock held by udevd/25334:
 #0: ffff88816bde4350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
1 lock held by syz.3.14320/1904:

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

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+0x388/0x470
 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: 39 Comm: kcompactd1 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:__unwind_start+0x67/0x760
Code: 4d 89 f7 49 c1 ef 03 41 80 3c 17 00 74 12 4c 89 f7 e8 5d d3 b9 00 48 ba 00 00 00 00 00 fc ff df 4d 89 2e 80 3d bd 20 af 0c 01 <75> 2e 65 48 8b 05 b7 b3 c1 11 49 39 c5 74 69 49 8d 6d 34 48 89 e8
RSP: 0018:ffffc90000af6988 EFLAGS: 00000246
RAX: ffffc90000af69e8 RBX: ffffc90000af69e8 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffffc90000af6a48
RBP: ffffc90000af6a70 R08: ffffc90000af6a47 R09: 0000000000000000
R10: ffffc90000af69e8 R11: fffff5200015ed49 R12: 0000000000000000
R13: ffff8881607e0000 R14: ffffc90000af6a10 R15: 1ffff9200015ed42
FS:  0000000000000000(0000) GS:ffff8882a9294000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1c805ec4b8 CR3: 0000000172606000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 arch_stack_walk+0xe3/0x150
 stack_trace_save+0xa9/0x100
 save_stack+0x122/0x230
 __set_page_owner+0x8d/0x4c0
 post_alloc_hook+0x231/0x280
 compaction_alloc+0x303f/0x3520
 migrate_pages_batch+0xa55/0x4ca0
 migrate_pages+0x1c74/0x2a10
 compact_zone+0x221b/0x4650
 compact_node+0x21a/0x320
 kcompactd+0xc0c/0x12e0
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
