INFO: task udevd:31473 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:25480 pid:31473 tgid:31473 ppid:5060   task_flags:0x400140 flags:0x00080802
Call Trace:
 <TASK>
 __schedule+0x17dd/0x5830
 schedule+0x164/0x2b0
 io_schedule+0x7f/0xd0
 folio_wait_bit_common+0x85e/0xc40
 do_read_cache_folio+0x1ac/0x590
 read_part_sector+0xb6/0x2b0
 adfspart_check_POWERTEC+0x9a/0x7a0
 bdev_disk_changed+0x851/0x1680
 blkdev_get_whole+0x372/0x510
 bdev_open+0x324/0xd70
 blkdev_open+0x461/0x600
 do_dentry_open+0x80e/0x1360
 vfs_open_consume+0x4a/0x350
 path_openat+0x16fc/0x20f0
 do_file_open+0x23e/0x4a0
 do_sys_openat2+0x115/0x200
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0x166/0x520
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f967d5169a4
RSP: 002b:00007fffa732fba0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000557d2909f9c0 RCX: 00007f967d5169a4
RDX: 00000000000a0800 RSI: 0000557d2909bb20 RDI: 00000000ffffff9c
RBP: 0000557d2909bb20 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 0000557d2909b370 R14: 0000000000000001 R15: 0000557d2907d910
 </TASK>

Showing all locks held in the system:
locks held by kworker/u8:1/13: 2, last CPU#0:
 #0: ffff888114272948 ((wq_completion)tipc_rcv){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc90000127c40 ((work_completion)(&con->rwork)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
locks held by pr/ttyS0/34: 2, last CPU#1:
 #0: ffffffff8fe33dd8 (console_srcu){....}-{0:0}, at: console_srcu_read_lock+0x30/0x60
 #1: ffffffff9bfee6d8 (&port_lock_key){-.-.}-{3:3}, at: univ8250_console_device_lock+0x67/0xc0
locks held by khungtaskd/35: 1, last CPU#0:
 #0: ffffffff8ff5a320 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
locks held by getty/5438: 2, on CPU#1:
 #0: ffff8881166bb0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900034862e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45a/0x1360
locks held by kworker/0:8/24364: 3, last CPU#0:
 #0: ffff88810006ad48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc90007437c40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #2: ffff88811432e258 (&data->fib_lock){+.+.}-{4:4}, at: nsim_fib_event_work+0x1fd/0x3b0
locks held by udevd/31473: 1, on CPU#0:
 #0: ffff88816bf61350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xde/0xd70
locks held by syz.3.8239/9651: 3, on CPU#0:
 #0: ffffffff914f0668 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40
 #1: ffff8881ba738128 (&dev->mutex){....}-{4:4}, at: devlink_get_from_attrs_lock+0x34a/0x490
 #2: ffff8881ba73d258 (&devlink->lock_key#4){+.+.}-{4:4}, at: devlink_get_from_attrs_lock+0x360/0x490

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

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+0x17d/0x390
 sys_info+0x135/0x170
 watchdog+0x1073/0x10f0
 kthread+0x38b/0x480
 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: 34 Comm: pr/ttyS0 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:_raw_spin_unlock_irqrestore+0x47/0x80
Code: f7 e8 4d 66 9f f5 f7 c3 00 02 00 00 74 05 e8 50 07 cc f5 9c 58 a9 00 02 00 00 75 29 f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 64 5a 90 f5 65 48 8b 05 ac a1 ba 08 48 85 c0 74 18 5b 41 5e c3
RSP: 0018:ffffc90000a08f20 EFLAGS: 00000206
RAX: 0000000000000002 RBX: 0000000000000287 RCX: 0000000000000102
RDX: 0000000000000000 RSI: ffffffff8e6a2237 RDI: 0000000000000001
RBP: 0000000000000101 R08: ffffffff919d72bf R09: 1ffffffff233ae57
R10: dffffc0000000000 R11: fffffbfff233ae58 R12: 0000000000000008
R13: 0000000000000009 R14: ffff88823c628600 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8882a7a20000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f415ef5da08 CR3: 0000000028012000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 handle_softirqs+0x265/0x8d0
 __irq_exit_rcu+0xc6/0x220
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:_raw_spin_unlock_irqrestore+0x47/0x80
Code: f7 e8 4d 66 9f f5 f7 c3 00 02 00 00 74 05 e8 50 07 cc f5 9c 58 a9 00 02 00 00 75 29 f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 64 5a 90 f5 65 48 8b 05 ac a1 ba 08 48 85 c0 74 18 5b 41 5e c3
RSP: 0018:ffffc90000aa7ca8 EFLAGS: 00000206
RAX: 0000000000000006 RBX: 0000000000000206 RCX: 8000000000000001
RDX: 0000000000000000 RSI: ffffffff8e6a2237 RDI: 0000000000000001
RBP: ffffc90000aa7e18 R08: ffffffff919d72bf R09: 1ffffffff233ae57
R10: dffffc0000000000 R11: fffffbfff233ae58 R12: 0000000000000002
R13: ffff8881626dbc00 R14: ffffffff9bfee6c0 R15: dffffc0000000000
 nbcon_kthread_func+0x724/0x8d0
 kthread+0x38b/0x480
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
