INFO: task udevd:29291 blocked in I/O wait 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:22424 pid:29291 tgid:29291 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+0x785/0x14e0
 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: 0033:0x7f2d73d169a4
RSP: 002b:00007ffea2a9e920 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000555d7fb60780 RCX: 00007f2d73d169a4
RDX: 00000000000a0800 RSI: 0000555d7fb56cc0 RDI: 00000000ffffff9c
RBP: 0000555d7fb56cc0 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 0000555d7fb51aa0 R14: 0000000000000001 R15: 0000555d7fb40910
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/35:
 #0: ffffffff8e95cd60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5438:
 #0: ffff8881774ee0a0 (&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/29291:
 #0: ffff888103b79350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
3 locks held by syz.3.24960/12449:
2 locks held by syz.3.24960/12452:
 #0: ffffffff8fe3e7e8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40
 #1: ffffffff8fe3e620 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 35 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+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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5593 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:aa_sock_msg_perm+0x51/0x1b0
Code: fd 49 bd 00 00 00 00 00 fc ff df 49 83 c7 18 4c 89 fd 48 c1 ed 03 42 80 7c 2d 00 00 74 08 4c 89 ff e8 23 5c c3 fd 49 83 3f 00 <0f> 84 ce 00 00 00 e8 14 21 58 fd 4d 85 e4 0f 84 e1 00 00 00 e8 06
RSP: 0018:ffffc90004697ab0 EFLAGS: 00000286
RAX: ffffffff846d8ae8 RBX: 0000000000000004 RCX: ffff88816bf68000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff8c218440
RBP: 1ffff110229346cb R08: ffffc90004697c07 R09: 0000000000000000
R10: ffffc90004697bf8 R11: fffff520008d2f81 R12: ffffc90004697ba0
R13: dffffc0000000000 R14: ffffffff8c218440 R15: ffff8881149a3658
FS:  000055557a161540(0000) GS:ffff8882a9290000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1a975e8158 CR3: 0000000109a34000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 security_socket_recvmsg+0x9f/0x2c0
 sock_recvmsg+0x53/0x1b0
 sock_read_iter+0x251/0x320
 vfs_read+0x582/0xa70
 ksys_read+0x150/0x270
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbe77757f57
Code: 48 89 fa 4c 89 df e8 a8 56 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffc6801ec70 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 000055557a161540 RCX: 00007fbe77757f57
RDX: 0000000000000004 RSI: 00007ffc6801eccc RDI: 0000000000000003
RBP: 00007ffc6801f170 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004
R13: 00007ffc6801eccc R14: 00007ffc6801ed60 R15: 0000000000000000
 </TASK>
