INFO: task udevd:25635 blocked in I/O wait for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd           state:D stack:21992 pid:25635 tgid:25635 ppid:5033   task_flags:0x400140 flags:0x00080802
Call Trace:
 <TASK>
 __schedule+0x16f9/0x5500
 schedule+0x164/0x360
 io_schedule+0x7f/0xd0
 folio_wait_bit_common+0x6dd/0xbc0
 do_read_cache_folio+0x1a7/0x560
 read_part_sector+0xb8/0x2b0
 adfspart_check_POWERTEC+0x9a/0x7a0
 bdev_disk_changed+0x817/0x1770
 blkdev_get_whole+0x2e5/0x480
 bdev_open+0x31e/0xcc0
 blkdev_open+0x485/0x620
 do_dentry_open+0x83d/0x13e0
 vfs_open+0x3b/0x350
 path_openat+0x2e43/0x38a0
 do_file_open+0x23e/0x4a0
 do_sys_openat2+0x113/0x200
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7cd27bf9a4
RSP: 002b:00007ffe51393190 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000560c2fc38220 RCX: 00007f7cd27bf9a4
RDX: 00000000000a0800 RSI: 0000560c2fc18510 RDI: 00000000ffffff9c
RBP: 0000560c2fc18510 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 0000560c2fc2e950 R14: 0000000000000001 R15: 0000560c2fc17910
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/42:
 #0: ffffffff8dfc8240 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5411:
 #0: ffff8881179a60a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc90003f132e0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x462/0x13a0
2 locks held by syz-executor/9495:
 #0: ffff88817ba24480 (sb_writers#5){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
 #1: ffff88817570ec18 (&type->i_mutex_dir_key#5/1){+.+.}-{4:4}, at: filename_rmdir+0x1cd/0x520
1 lock held by udevd/25635:
 #0: ffff88810a98d4c8 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xcc0
2 locks held by syz-executor/2745:
 #0: ffff8881740c2480 (sb_writers#5){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
 #1: ffff888119108288 (_T->lock){....}-{2:2}, at: rt_spin_trylock+0x10c/0x2b0

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 42 Comm: khungtaskd Tainted: G             L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [L]=SOFTLOCKUP
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+0xfd3/0x1030
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 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: 2745 Comm: syz-executor Tainted: G             L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [L]=SOFTLOCKUP
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+0x0/0x80
Code: cc cc cc cc e8 41 3b 07 f6 5b c3 cc cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 41 56 53 48 89 f3 49 89 fe 48 83 c7 18 48 8b 74 24 10
RSP: 0018:ffffc90020bf7bd8 EFLAGS: 00000046
RAX: 1ffff110242079d2 RBX: ffff88812103ce80 RCX: ffff88810c389d80
RDX: 0000000000000001 RSI: 0000000000000246 RDI: ffff88812103ce40
RBP: ffffc90020bf7cd0 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200417ef68 R12: dffffc0000000000
R13: 1ffff9200417ef84 R14: 0000000000000246 R15: ffff88812103ce40
FS:  00005555616f9500(0000) GS:ffff88818e91f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa1c7e1da40 CR3: 0000000109da0000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 rt_mutex_slowunlock+0x4a7/0x8b0
 unlock_stock+0x58/0x1d0
 __memcg_slab_free_hook+0x38e/0x4b0
 kmem_cache_free+0x416/0x6c0
 fput_close_sync+0x11f/0x240
 __x64_sys_close+0x7e/0x110
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa1c7dcd60e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007fff468a5ec8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 00005555616f9500 RCX: 00007fa1c7dcd60e
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007fa1c7ea3cfe R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
R13: 00007fff468a5f50 R14: 000000000012ae12 R15: 00007fff468a64c0
 </TASK>
