INFO: task udevd:8652 blocked for more than 143 seconds.
      Not tainted 6.16.0-rc6-syzkaller-00135-gcf074eca0065-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd           state:D stack:21928 pid:8652  tgid:8652  ppid:5279   task_flags:0x400140 flags:0x00004006
Call Trace:
 <TASK>
 __schedule+0x16f5/0x4d00
 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+0x3a8/0x510
 do_dentry_open+0xdf3/0x1970
 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: 0033:0x7f28a35169a4
RSP: 002b:00007ffeb9e631b0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000055c847260fd0 RCX: 00007f28a35169a4
RDX: 00000000000a0800 RSI: 000055c847270880 RDI: 00000000ffffff9c
RBP: 000055c847270880 R08: 0000000000000001 R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 000055c84726bd60 R14: 0000000000000002 R15: 000055c847260910
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e13f0e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5658:
 #0: ffff88810cc910a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900029062f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
1 lock held by udevd/8652:
 #0: ffff888022319358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
1 lock held by udevd/9129:
 #0: ffff88802231d358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 34 Comm: khungtaskd Not tainted 6.16.0-rc6-syzkaller-00135-gcf074eca0065-dirty #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+0xfee/0x1030
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 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: 12 Comm: kworker/u8:0 Not tainted 6.16.0-rc6-syzkaller-00135-gcf074eca0065-dirty #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: bat_events batadv_nc_worker
RIP: 0010:check_preemption_disabled+0x17/0x120
Code: 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41 56 53 48 83 ec 10 65 48 8b 05 ee 2d 32 07 48 89 44 24 08 <65> 8b 05 f6 2d 32 07 65 8b 0d eb 2d 32 07 f7 c1 ff ff ff 7f 74 23
RSP: 0018:ffffc900000f7980 EFLAGS: 00000082
RAX: 6f71782e74d12a00 RBX: 0000000000000202 RCX: 6f71782e74d12a00
RDX: 0000000000000002 RSI: ffffffff8db83abb RDI: ffffffff8be28c00
RBP: ffff88801c2de180 R08: 0000000000000000 R09: ffffffff8b3b4ab2
R10: dffffc0000000000 R11: ffffffff8b3b49e0 R12: 0000000000000002
R13: 0000000000000002 R14: ffffffff8e13f0e0 R15: ffff88801c2dd640
FS:  0000000000000000(0000) GS:ffff8880b8623000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ed865e8000 CR3: 000000010a3f8000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 lock_release+0x27a/0x3e0
 batadv_nc_worker+0x28c/0x610
 process_scheduled_works+0xae1/0x17b0
 worker_thread+0x8a0/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
