INFO: task udevd:5846 blocked 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:22056 pid:5846  tgid:5846  ppid:5280   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x14ef/0x4fb0
 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+0x92/0xef0
 bdev_disk_changed+0x765/0x14c0
 blkdev_get_whole+0x380/0x510
 bdev_open+0x31e/0xd30
 blkdev_open+0x470/0x610
 do_dentry_open+0x7ce/0x1420
 vfs_open+0x3b/0x340
 path_openat+0x3486/0x3e20
 do_filp_open+0x22d/0x490
 do_sys_openat2+0x12f/0x220
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2180b169a4
RSP: 002b:00007ffc44d7da20 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000055c15eeacc20 RCX: 00007f2180b169a4
RDX: 00000000000a0800 RSI: 000055c15ee86560 RDI: 00000000ffffff9c
RBP: 000055c15ee86560 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 000055c15ee9c950 R14: 0000000000000001 R15: 000055c15ee85910
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/35:
 #0: ffffffff8e35a360 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5660:
 #0: ffff8881114480a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc9000356b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13c0
1 lock held by udevd/5846:
 #0: ffff88816d872358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
2 locks held by kworker/1:13/13559:
2 locks held by dhcpcd-run-hook/22168:

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

NMI backtrace for cpu 0
CPU: 0 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+0xf90/0xfe0
 kthread+0x726/0x8b0
 ret_from_fork+0x51b/0xa40
 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: 22168 Comm: rm 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:mark_lock+0x3c/0x190
Code: 00 03 00 83 f9 01 bb 09 00 00 00 83 db 00 83 fa 08 0f 45 da bd 01 00 00 00 89 d9 d3 e5 25 ff 1f 00 00 48 0f a3 05 34 f4 37 12 <73> 10 48 69 c0 c8 00 00 00 48 8d 88 b0 73 78 93 eb 42 83 3d fb 83
RSP: 0018:ffffc900055777e0 EFLAGS: 00000003
RAX: 00000000000005d3 RBX: 0000000000000009 RCX: 0000000000000009
RDX: 0000000000000008 RSI: ffff888110e76318 RDI: ffff888110e757c0
RBP: 0000000000000200 R08: ffffffff8219c193 R09: ffff888116221b18
R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000000004
R13: ffff888110e76318 R14: ffff888110e757c0 R15: 0000000000000001
FS:  00007fde6778c380(0000) GS:ffff8882a9924000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fde67853321 CR3: 0000000195c6e000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 __lock_acquire+0x6b5/0x2cf0
 lock_acquire+0x106/0x330
 down_read+0x47/0x2e0
 validate_mm+0x1e3/0x4c0
 do_brk_flags+0x828/0xbe0
 __se_sys_brk+0x9d8/0xba0
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fde678e4c7c
Code: 1a 64 c7 03 01 00 00 00 eb 11 64 44 89 23 31 f6 5b 31 ff 5d 41 5c e9 41 ff ff ff 5b 83 c8 ff 5d 41 5c c3 b8 0c 00 00 00 0f 05 <48> 8b 15 d5 61 0d 00 45 31 c0 48 89 02 48 39 c7 76 12 48 8b 05 73
RSP: 002b:00007fff68fb3eb8 EFLAGS: 00000206 ORIG_RAX: 000000000000000c
RAX: ffffffffffffffda RBX: 0000000000021000 RCX: 00007fde678e4c7c
RDX: 00007fde679c31b8 RSI: 00007fde679bbb00 RDI: 000055ad833d8000
RBP: 00007fde679bbaa0 R08: 0000000000000000 R09: 00007fde679bbd80
R10: 0000000000000037 R11: 0000000000000206 R12: 000055ad833b7000
R13: 0000000000000290 R14: 0000000000001000 R15: 0000000000000000
 </TASK>
