INFO: task udevd:5854 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:20864 pid:5854  tgid:5854  ppid:5296   task_flags:0x400140 flags:0x00004006
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 io_schedule+0x80/0xd0
 folio_wait_bit_common+0x6b0/0xb90
 do_read_cache_folio+0x1aa/0x590
 read_part_sector+0xb6/0x2b0
 adfspart_check_POWERTEC+0x8c/0xf30
 bdev_disk_changed+0x75f/0x14b0
 blkdev_get_whole+0x380/0x510
 bdev_open+0x31e/0xd30
 blkdev_open+0x457/0x600
 do_dentry_open+0x953/0x13f0
 vfs_open+0x3b/0x340
 path_openat+0x2ee5/0x3830
 do_filp_open+0x1fa/0x410
 do_sys_openat2+0x121/0x1c0
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff74dd169a4
RSP: 002b:00007ffc2b6a4430 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00005619f8ff1500 RCX: 00007ff74dd169a4
RDX: 00000000000a0800 RSI: 00005619f8ff2310 RDI: 00000000ffffff9c
RBP: 00005619f8ff2310 R08: 0000000000000001 R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 00005619f9005800 R14: 0000000000000001 R15: 00005619f8ff1910
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e13a0e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5673:
 #0: ffff888021e940a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900029032f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
1 lock held by udevd/5854:
 #0: ffff88810877f358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
3 locks held by kworker/u8:4/5884:
3 locks held by kworker/1:6/5913:
 #0: ffff88801a480d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc9000476fbc0 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffff8881232da240 (&data->fib_lock){+.+.}-{4:4}, at: nsim_fib_event_work+0x26b/0x3180
1 lock held by syz.5.5253/27079:

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

NMI backtrace for cpu 1
CPU: 1 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+0x189/0x250
 nmi_cpu_backtrace+0x39e/0x3d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 watchdog+0xf93/0xfe0
 kthread+0x711/0x8a0
 ret_from_fork+0x439/0x7d0
 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: 5832 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:__get_user_8+0x0/0x30
Code: ff 7f 00 00 48 39 d0 48 0f 47 c2 0f 1f 00 8b 10 31 c0 0f 1f 00 e9 90 03 04 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <48> ba 00 f0 ff ff ff 7f 00 00 48 39 d0 48 0f 47 c2 0f 1f 00 48 8b
RSP: 0018:ffffc90003377d98 EFLAGS: 00000206
RAX: 0000555572053e28 RBX: ffff8880220d4ef0 RCX: b3ae4dd93ccbf300
RDX: 0000000000000000 RSI: ffffffff8dba996e RDI: ffffffff8be33f80
RBP: ffffc90003377ec0 R08: 0000000000000000 R09: ffffffff820b8b20
R10: dffffc0000000000 R11: fffffbfff1f474e7 R12: dffffc0000000000
R13: ffffc90003377fd8 R14: 0000555572053e28 R15: ffff8880220d3980
FS:  0000555572053500(0000) GS:ffff8880b8613000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000506 CR3: 000000010f66e000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 __rseq_handle_notify_resume+0x137/0x11f0
 exit_to_user_mode_loop+0xc2/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0632bc14a3
Code: 1f 84 00 00 00 00 00 83 ff 03 74 7b 83 ff 02 b8 fa ff ff ff 49 89 ca 0f 44 f8 80 3d be 70 1e 00 00 74 14 b8 e6 00 00 00 0f 05 <f7> d8 c3 66 2e 0f 1f 84 00 00 00 00 00 48 83 ec 28 48 89 54 24 10
RSP: 002b:00007ffec7d00078 EFLAGS: 00000202 ORIG_RAX: 00000000000000e6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f0632bc14a3
RDX: 00007ffec7d00090 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000012db6b90 R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffec7d004e0
R13: 0000000000000004 R14: 00007ffec7d000cc R15: 00007ffec7d00160
 </TASK>
