INFO: task udevd:22475 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:22424 pid:22475 tgid:22475 ppid:5059   task_flags:0x400140 flags:0x00080002
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: 0033:0x7fb9549169a4
RSP: 002b:00007ffc5590a430 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000555c124b5780 RCX: 00007fb9549169a4
RDX: 00000000000a0800 RSI: 0000555c124ad230 RDI: 00000000ffffff9c
RBP: 0000555c124ad230 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 0000555c124a6aa0 R14: 0000000000000001 R15: 0000555c12495910
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/35:
 #0: ffffffff8e95cd60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5438:
 #0: ffff888113a800a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900034762e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13a0
2 locks held by sshd/5592:
1 lock held by udevd/22475:
 #0: ffff88810adf2350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
2 locks held by kworker/1:2/26600:
6 locks held by syz.9.15651/1398:
2 locks held by syz.8.15654/1410:
2 locks held by syz.7.15655/1413:

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

NMI backtrace for cpu 0
CPU: 0 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/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: 15922 Comm: syz-executor 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:native_apic_msr_write+0x39/0x50
Code: 74 2a 83 ff 30 74 25 eb 10 81 ff d0 00 00 00 74 1b 81 ff e0 00 00 00 74 13 c1 ef 04 81 c7 00 08 00 00 89 f9 89 f0 31 d2 0f 30 <66> 90 e9 c0 26 36 0a cc 89 f6 31 d2 e9 66 54 7a 03 66 0f 1f 44 00
RSP: 0018:ffffc90000a08d10 EFLAGS: 00000046
RAX: 00000000000004a1 RBX: ffff88823c623e40 RCX: 0000000000000838
RDX: 0000000000000000 RSI: 00000000000004a1 RDI: 0000000000000838
RBP: ffffc90000a08dc8 R08: ffffffff81b2dfc5 R09: ffffffff9a48b588
R10: 0000000000000003 R11: ffffffff817446c0 R12: 00000000000004a1
R13: dffffc0000000000 R14: 0000000010004d2c R15: 0000000000000020
FS:  0000555588097500(0000) GS:ffff8882a928f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555567d264e8 CR3: 000000019f640000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 lapic_next_event+0x11/0x20
 clockevents_program_event+0x385/0x630
 __hrtimer_rearm_deferred+0x270/0x450
 irqentry_exit+0x6a0/0x730
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:handle_softirqs+0x160/0x840
Code: 89 6c 24 20 0f b7 db 48 c7 c7 20 1d cb 8b e8 d7 e1 20 0a 65 66 c7 05 a5 30 b1 11 00 00 e8 38 0b 46 00 fb 48 c7 c5 c0 a0 60 8e <b8> ff ff ff ff 0f bc c3 41 89 c6 41 ff c6 0f 84 09 04 00 00 89 5c
RSP: 0018:ffffc90000a08f28 EFLAGS: 00000206
RAX: 00000000006b1db4 RBX: 0000000000000004 RCX: 0000000080000100
RDX: 0000000000000000 RSI: ffffffff8dfa6800 RDI: ffffffff8c28ade0
RBP: ffffffff8e60a0c0 R08: ffffffff9030aff7 R09: 1ffffffff20615fe
R10: dffffc0000000000 R11: fffffbfff20615ff R12: 0000000000000000
R13: 0000000000000000 R14: ffff8881b78c5880 R15: dffffc0000000000
 __irq_exit_rcu+0xca/0x220
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:do_syscall_64+0x163/0xf80
Code: 41 81 fc d7 01 00 00 4c 8b 7b 08 0f 87 b8 01 00 00 41 81 fc d8 01 00 00 48 19 f6 44 21 e6 4c 89 f7 e8 11 1f 8b f5 49 89 46 50 <90> 90 4d 8b 67 08 4c 89 f7 e8 4f 41 8b f5 0f 1f 44 00 00 9c 59 f7
RSP: 0018:ffffc9000988fef0 EFLAGS: 00000286
RAX: 0000000000000003 RBX: ffffc9000988fef0 RCX: f689e7f375d2fd00
RDX: 0000000000000000 RSI: ffffffff8dfa6800 RDI: ffffffff8c28ade0
RBP: ffffc9000988ff38 R08: ffffffff9030aff7 R09: 1ffffffff20615fe
R10: dffffc0000000000 R11: fffffbfff20615ff R12: 0000000000000101
R13: ffffffff81000130 R14: ffffc9000988ff48 R15: ffff8881b78c5880
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7db075d60e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007ffddf283e88 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: 0000000000000003 RBX: 0000555588097500 RCX: 00007f7db075d60e
RDX: 0000000000000002 RSI: 00007ffddf283fd0 RDI: ffffffffffffff9c
RBP: 00007ffddf283f7c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000051b
R13: 00000000000927c0 R14: 00000000001a30b2 R15: 00007ffddf283fd0
 </TASK>
