INFO: task udevd:7391 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:21928 pid:7391  tgid:7391  ppid:5301   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+0x3a8/0x510
 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: 0033:0x7ff476d769a4
RSP: 002b:00007ffe73bd91a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00005623dfcaf9f0 RCX: 00007ff476d769a4
RDX: 00000000000a0800 RSI: 00005623dfc895b0 RDI: 00000000ffffff9c
RBP: 00005623dfc895b0 R08: 0000000000000001 R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 00005623dfc9c800 R14: 0000000000000001 R15: 00005623dfc88910
 </TASK>

Showing all locks held in the system:
3 locks held by kworker/u8:0/12:
 #0: ffff888136639f98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140
 #1: ffff888136624008 (psi_seq){-.-.}-{0:0}, at: psi_task_switch+0x53/0x880
 #2: ffff888136625918 (&base->lock){-.-.}-{2:2}, at: __mod_timer+0x8ee/0xf30
1 lock held by ksoftirqd/1/23:
 #0: ffff888136639f98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140
4 locks held by kworker/1:0/24:
1 lock held by khungtaskd/34:
 #0: ffffffff8e139f20 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5680:
 #0: ffff88810ba5e0a0 (&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/7391:
 #0: ffff888108a2d358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
1 lock held by udevd/8015:
 #0: ffff888021417358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
1 lock held by syz.1.6489/27019:
1 lock held by syz.0.6492/27028:

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

NMI backtrace for cpu 0
CPU: 0 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+0x3fc/0x770
 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: 5845 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:lock_release+0x78/0x3e0
Code: 0d f6 05 30 0e f0 0d 01 0f 84 ad 02 00 00 83 3d 9d 59 06 0e 00 0f 84 44 02 00 00 65 8b 05 60 51 03 11 85 c0 0f 85 35 02 00 00 <65> 4c 8b 3c 25 08 80 a0 92 41 83 bf ec 0a 00 00 00 0f 85 1e 02 00
RSP: 0018:ffffc900032ff7f8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffffffff8de16880 RCX: 103f72a153a72200
RDX: 0000000000000000 RSI: ffffffff8be33860 RDI: ffffffff8be33820
RBP: ffffc900032ff908 R08: 0000000000000000 R09: ffffffff8243caf9
R10: dffffc0000000000 R11: fffffbfff1f472e7 R12: 1ffff9200065ff0c
R13: ffffffff8243caf9 R14: ffffffff8de16888 R15: ffffffff8243caf9
FS:  0000555578799500(0000) GS:ffff8881a3c18000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555787b45c8 CR3: 00000000259e2000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 read_seqbegin+0x11d/0x250
 prepend_path+0x109/0x830
 d_absolute_path+0xa1/0x140
 tomoyo_realpath_from_path+0x2c8/0x5d0
 tomoyo_path_perm+0x213/0x4b0
 tomoyo_path_rmdir+0xa2/0xe0
 security_path_rmdir+0x167/0x360
 do_rmdir+0x1e8/0x550
 __x64_sys_unlinkat+0xc2/0xf0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb84978e187
Code: 73 01 c3 48 c7 c1 a8 ff ff ff 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 07 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd4fc19f58 EFLAGS: 00000207 ORIG_RAX: 0000000000000107
RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 00007fb84978e187
RDX: 0000000000000200 RSI: 00007ffd4fc1b0a0 RDI: 00000000ffffff9c
RBP: 00007fb849811c05 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000207 R12: 00007ffd4fc1b0a0
R13: 00007fb849811c05 R14: 00005555787994a8 R15: 0000000000000005
 </TASK>
