INFO: task udevd:27680 blocked 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:23400 pid:27680 tgid:27680 ppid:5056   task_flags:0x400040 flags:0x00080000
Call Trace:
 <TASK>
 __schedule+0x17b4/0x5680
 schedule+0x164/0x360
 schedule_timeout+0x158/0x2c0
 nbd_queue_rq+0x857/0x1100
 blk_mq_dispatch_rq_list+0xa70/0x1910
 __blk_mq_sched_dispatch_requests+0xdcc/0x1600
 blk_mq_sched_dispatch_requests+0xd7/0x190
 blk_mq_run_hw_queue+0x348/0x4f0
 blk_mq_dispatch_list+0xd16/0xe10
 blk_mq_flush_plug_list+0x48d/0x570
 __blk_flush_plug+0x3ed/0x4d0
 __submit_bio+0x28d/0x580
 submit_bio_noacct_nocheck+0x2f4/0xa40
 block_read_full_folio+0x7b7/0x830
 filemap_read_folio+0x137/0x3b0
 do_read_cache_folio+0x358/0x590
 read_part_sector+0xb6/0x2b0
 adfspart_check_ICS+0xb1/0x960
 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: 0033:0x7f897f9169a4
RSP: 002b:00007ffc5aa839e0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000561d1f7ed780 RCX: 00007f897f9169a4
RDX: 00000000000a0800 RSI: 0000561d1f7ce310 RDI: 00000000ffffff9c
RBP: 0000561d1f7ce310 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 0000561d1f7e1800 R14: 00007ffc5aa83a8c R15: 0000561d1f7cd910
 </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/5435:
 #0: ffff88816ea680a0 (&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
6 locks held by sshd/5578:
3 locks held by udevd/27680:
 #0: ffff888117ae9350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
 #1: ffff88810e178418 (set->srcu){.+.+}-{0:0}, at: blk_mq_run_hw_queue+0x31f/0x4f0
 #2: ffff88811ec28178 (&cmd->lock){+.+.}-{4:4}, at: nbd_queue_rq+0xc6/0x1100

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

NMI backtrace for cpu 1
CPU: 1 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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5045 Comm: klogd 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:kasan_check_range+0x1d/0x2c0
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6 55 41 57 41 56 41 55 41 54 53 b0 01 48 85 f6 0f 84 ae 01 00 00 4c 8d 04 37 <49> 39 f8 0f 82 36 02 00 00 49 b9 00 00 00 00 00 80 ff ff eb 0d cc
RSP: 0018:ffffc900032d79e8 EFLAGS: 00000206
RAX: dffffc0000000001 RBX: 0000000000000030 RCX: ffffffff81a4abd3
RDX: 0000000000000001 RSI: 0000000000000030 RDI: ffffc900032d7ac0
RBP: 0000000000000000 R08: ffffc900032d7af0 R09: 0000000000000003
R10: 00000000ffffffff R11: 0000000000000000 R12: ffffc900032d7ac0
R13: dffffc0000000000 R14: ffffc900032d7ac0 R15: 000000000000001a
FS:  00007ff774c9a380(0000) GS:ffff88818dc93000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb7cbb29000 CR3: 000000011873e000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 __asan_memset+0x22/0x50
 record_print_text+0x153/0x450
 syslog_print+0x3b0/0x610
 do_syslog+0x583/0x7d0
 __x64_sys_syslog+0x7c/0x90
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff774dfbfa7
Code: 73 01 c3 48 8b 0d 81 ce 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 67 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 51 ce 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffc6ce01f38 EFLAGS: 00000206 ORIG_RAX: 0000000000000067
RAX: ffffffffffffffda RBX: 00007ff774f9a4a0 RCX: 00007ff774dfbfa7
RDX: 00000000000003ff RSI: 00007ff774f9a4a0 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000007 R09: 4802bcc1d7e3a15f
R10: 0000000000004000 R11: 0000000000000206 R12: 00007ff774f9a4a0
R13: 00007ff774f8a212 R14: 00007ff774f9a898 R15: 00007ff774f9a898
 </TASK>
