INFO: task udevd:6025 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:20552 pid:6025  tgid:6025  ppid:5058   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: 0033:0x7f1921f169a4
RSP: 002b:00007ffee0916be0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000558a049af780 RCX: 00007f1921f169a4
RDX: 00000000000a0800 RSI: 0000558a0499d390 RDI: 00000000ffffff9c
RBP: 0000558a0499d390 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 0000558a049a6950 R14: 0000000000000001 R15: 0000558a0498f910
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e95cda0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
1 lock held by udevd/6025:
 #0: ffff888169bb5350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
2 locks held by udevd/6310:
2 locks held by getty/12269:
 #0: ffff888114f1e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc90005a352e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13a0
2 locks held by syz.9.2701/18432:

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 34 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: 18440 Comm: udevadm 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:kvfree_call_rcu+0x5f/0x430
Code: df e8 75 38 0d 00 84 c0 75 64 4c 8b 3d 7a 29 14 0c 48 89 df e8 62 dd 66 ff 48 c1 e8 06 48 83 e0 c0 49 8d 0c 07 49 8b 54 07 08 <89> d0 83 e0 01 48 ff c8 48 09 d0 48 21 c8 0f b6 48 33 c1 e1 18 81
RSP: 0018:ffffc9000901ea90 EFLAGS: 00000206
RAX: 00000000043b27c0 RBX: ffff88810ec9fe00 RCX: ffffea00043b27c0
RDX: ffffffffffffff81 RSI: ffff88810ec9fe00 RDI: ffff88810ec9fe00
RBP: ffffc9000901f470 R08: 00007f9e0d8aefff R09: 00007f9e0d8d6fff
R10: 00007f9e0d8aefff R11: 00007f9e0d8d6fff R12: dffffc0000000000
R13: 000000000000000b R14: ffff88810ec9fe08 R15: ffffea0000000000
FS:  0000000000000000(0000) GS:ffff88818dc90000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9e0d5fd0f0 CR3: 00000001bd440000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 mas_wr_store_entry+0x5301/0x7fc0
 mas_store_prealloc+0x699/0xa20
 mmap_region+0x1c2b/0x22a0
 do_mmap+0xc39/0x10c0
 vm_mmap_pgoff+0x2c9/0x4f0
 ksys_mmap_pgoff+0x51e/0x760
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9e0db26b74
Code: 63 08 44 89 e8 5b 41 5c 41 5d c3 41 89 ca 41 f7 c1 ff 0f 00 00 74 0c c7 05 f5 46 01 00 16 00 00 00 eb 17 b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 0c f7 d8 89 05 dc 46 01 00 48 83 c8 ff c3 0f
RSP: 002b:00007ffe75dc2f38 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00000fffcebb85e8 RCX: 00007f9e0db26b74
RDX: 0000000000000001 RSI: 000000000000a108 RDI: 0000000000000000
RBP: 00007ffe75dc32d0 R08: 0000000000000003 R09: 0000000000000000
R10: 0000000000000802 R11: 0000000000000246 R12: 00007f9e0d8ad5d0
R13: 00007ffe75dc3358 R14: fffffffffffff000 R15: 0000000000000000
 </TASK>
