INFO: task udevd:6136 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:20128 pid:6136  tgid:6136  ppid:5059   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x17b4/0x5680
 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+0x9a/0x7a0
 bdev_disk_changed+0x817/0x1770
 blkdev_get_whole+0x380/0x510
 bdev_open+0x31e/0xd30
 blkdev_open+0x470/0x610
 do_dentry_open+0x822/0x13a0
 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+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcfaad169a4
RSP: 002b:00007ffd8bb8c9c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000056462a586240 RCX: 00007fcfaad169a4
RDX: 00000000000a0800 RSI: 000056462a56d950 RDI: 00000000ffffff9c
RBP: 000056462a56d950 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 000056462a57a800 R14: 0000000000000001 R15: 000056462a566910
 </TASK>

Showing all locks held in the system:
2 locks held by kworker/1:2/33:
 #0: ffff88810006b140 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0xa35/0x1860
 #1: ffffc90000a97c40 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa70/0x1860
1 lock held by khungtaskd/35:
 #0: ffffffff8e95cda0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5437:
 #0: ffff88811192c0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc9000346b2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13a0
1 lock held by udevd/6136:
 #0: ffff888102f79350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
2 locks held by syz.0.2358/14222:
 #0: ffff88801c7da0d8 (&type->s_umount_key#77/1){+.+.}-{4:4}, at: alloc_super+0x28c/0xab0
 #1: ffff888102f79350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
3 locks held by syz.5.2692/15501:

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 35 Comm: khungtaskd Tainted: G             L      syzkaller #0 PREEMPT(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: 15501 Comm: syz.5.2692 Tainted: G             L      syzkaller #0 PREEMPT(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:__might_resched+0x12c/0x4d0
Code: d8 75 48 9c 58 a9 00 02 00 00 74 3f 4d 8d 6e 2c 4c 89 e8 48 c1 e8 03 0f b6 04 28 84 c0 0f 85 d7 02 00 00 41 f6 45 00 02 75 21 <4d> 8d ae 20 0b 00 00 4c 89 e8 48 c1 e8 03 0f b6 04 28 84 c0 0f 85
RSP: 0018:ffffc90007c269c8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000046
RDX: 0000000000000000 RSI: ffffffff8e21c1b2 RDI: ffffffff8c28b5e0
RBP: dffffc0000000000 R08: ffffc90007c26b7f R09: 0000000000000000
R10: ffffc90007c26b70 R11: ffffffff820e4a00 R12: ffff88801fd9bfc4
R13: ffff88801fd9bb2c R14: ffff88801fd9bb00 R15: 1ffff11003fb37f8
FS:  00007f9bacd3d6c0(0000) GS:ffff88818dc90000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9babfe8158 CR3: 000000011029a000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 down_write+0x76/0x200
 shmem_file_write_iter+0x7f/0x120
 __kernel_write_iter+0x41e/0x880
 dump_user_range+0xc19/0x12c0
 elf_core_dump+0x34c2/0x3ad0
 coredump_write+0x1216/0x1910
 vfs_coredump+0x3807/0x4530
 get_signal+0x1107/0x1330
 arch_do_signal_or_restart+0xbc/0x830
 irqentry_exit+0x284/0x730
 asm_exc_page_fault+0x26/0x30
RIP: 0033:0x7f9babd9cde1
Code: 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 48 3d 01 f0 ff ff 73 01 <c3> 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f
RSP: 002b:00000000fffffeb0 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f9bac015fa0 RCX: 00007f9babd9cdd9
RDX: 0000000000000000 RSI: 00000000fffffeb0 RDI: 0000000002000400
RBP: 00007f9babe32d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f9bac016038 R14: 00007f9bac015fa0 R15: 00007fff0be06d28
 </TASK>
