INFO: task udevd:11213 blocked 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:22496 pid:11213 tgid:11213 ppid:5256   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x15dd/0x52d0
 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+0x92/0xef0
 bdev_disk_changed+0x7ba/0x1550
 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+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f481b1169a4
RSP: 002b:00007ffefa7fcdf0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000560296273780 RCX: 00007f481b1169a4
RDX: 00000000000a0800 RSI: 0000560296254560 RDI: 00000000ffffff9c
RBP: 0000560296254560 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 0000560296271370 R14: 0000000000000001 R15: 0000560296253910
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/35:
 #0: ffffffff8e75e5e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5634:
 #0: ffff8881760f50a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc9000356b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13c0
3 locks held by kworker/1:11/6740:
 #0: ffff88810006b148 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0xa52/0x18c0
 #1: ffffc900076dfc40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0xa8d/0x18c0
 #2: ffff888172a10240 (&data->fib_lock){+.+.}-{4:4}, at: nsim_fib_event_work+0x202/0x3d0
1 lock held by udevd/7202:
 #0: ffff88816cce1358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
1 lock held by udevd/11213:
 #0: ffff888105bee358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
3 locks held by syz.2.5858/28659:
 #0: ffffffff8fc3eaf0 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40
 #1: ffff88816c457130 (&dev->mutex){....}-{4:4}, at: devlink_get_from_attrs_lock+0x249/0x3c0
 #2: ffff88816e9b6250 (&devlink->lock_key#2){+.+.}-{4:4}, at: devlink_get_from_attrs_lock+0x258/0x3c0
3 locks held by syz.0.5873/28712:
 #0: ffffffff9013c950 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x23/0x250
 #1: ffffffff8fbd0c88 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x883/0x1bb0
 #2: ffffffff8e7647c0 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x4c/0x580
1 lock held by syz.0.5873/28719:
 #0: ffffffff8fbd0c88 (rtnl_mutex){+.+.}-{4:4}, at: dev_ioctl+0x83c/0x1150
1 lock held by syz.1.5874/28716:
 #0: ffffffff8fbd0c88 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x3e/0x1c0

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

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/0x300
 sys_info+0x135/0x170
 watchdog+0xfd9/0x1030
 kthread+0x388/0x470
 ret_from_fork+0x51e/0xb90
 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: 5245 Comm: klogd 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:__sanitizer_cov_trace_const_cmp1+0x82/0x90
Code: 8d 52 28 4d 39 ca 77 22 89 ff 89 f6 49 ff c0 4c 89 01 48 c7 44 11 08 01 00 00 00 48 89 7c 11 10 48 89 74 11 18 48 89 44 11 20 <e9> 59 f1 ec 09 cc 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900032d77e8 EFLAGS: 00000293
RAX: ffffffff8babc6e1 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88811322ba80 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffffff8bcd8a62 R08: ffff88811322ba80 R09: 0000000000000008
R10: 0000000000000007 R11: 0000000000000000 R12: ffffc900032d78e0
R13: ffffc900032d79c0 R14: 0000000000000404 R15: ffffffff8bcd8a60
FS:  00007f2def25e380(0000) GS:ffff88818de54000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6cfaa30440 CR3: 0000000173d78000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 vsnprintf+0x3a1/0xee0
 snprintf+0xe8/0x140
 info_print_prefix+0x1fd/0x360
 record_print_text+0x176/0x450
 syslog_print+0x3b0/0x610
 do_syslog+0x583/0x7d0
 __x64_sys_syslog+0x7c/0x90
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2def3bffa7
Code: 73 01 c3 48 8b 0d 81 ce 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 67 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 51 ce 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffec9faa138 EFLAGS: 00000206 ORIG_RAX: 0000000000000067
RAX: ffffffffffffffda RBX: 00007f2def55e4a0 RCX: 00007f2def3bffa7
RDX: 00000000000003ff RSI: 00007f2def55e4a0 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000007 R09: 4bc00b41ff6bee0e
R10: 0000000000004000 R11: 0000000000000206 R12: 00007f2def55e4a0
R13: 00007f2def54e212 R14: 00007f2def55e898 R15: 00007f2def55e898
 </TASK>
