INFO: task udevd:8063 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:8063  tgid:8063  ppid:5052   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: 0033:0x7f4ae0d169a4
RSP: 002b:00007ffce3b24d80 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000055c9fa0c4890 RCX: 00007f4ae0d169a4
RDX: 00000000000a0800 RSI: 000055c9fa0a8360 RDI: 00000000ffffff9c
RBP: 000055c9fa0a8360 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 000055c9fa0bb800 R14: 0000000000000001 R15: 000055c9fa0a7910
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e95cd60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5431:
 #0: ffff8881121660a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900034762e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13a0
1 lock held by udevd/8063:
 #0: ffff888105335350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
1 lock held by syz.2.6268/26417:
 #0: ffffffff8e962f38 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x4c/0x580

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 34 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: 5041 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:__lock_acquire+0x360/0x2cf0
Code: 41 09 cc 41 09 dc 45 89 64 c7 20 41 89 7c c7 24 4c 89 7c 24 20 4d 8d 2c c7 41 81 e4 ff 1f 00 00 4c 0f a3 25 f2 ad 9f 12 73 15 <49> 69 c4 c8 00 00 00 48 8d 80 70 63 e2 93 4c 8b 74 24 08 eb 37 83
RSP: 0018:ffffc90000007ad8 EFLAGS: 00000003
RAX: 0000000000000000 RBX: 0000000000046000 RCX: 0000000000000070
RDX: 0000000000080000 RSI: 0000000000006000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff81b27a29 R09: ffff888121028298
R10: dffffc0000000000 R11: ffffffff81b27930 R12: 0000000000000070
R13: ffff888113e25590 R14: ffff888113e24a00 R15: ffff888113e25590
FS:  00007ff3ab6e3500(0000) GS:ffff88818dc87000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7622872700 CR3: 000000016b8b0000 CR4: 0000000000352ef0
Call Trace:
 <IRQ>
 lock_acquire+0x106/0x350
 _raw_spin_lock_irqsave+0x40/0x60
 hrtimer_interrupt+0xf9/0x950
 __sysvec_apic_timer_interrupt+0x102/0x430
 sysvec_apic_timer_interrupt+0x52/0xc0
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__rcu_read_lock+0x0/0x60
Code: 3f fc ff ff 4c 89 ff e8 0e 6f 85 00 e9 32 fc ff ff 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 53 65 48 8b 1d ab 03 8e 11 48 81 c3 c4 04 00 00 48 89
RSP: 0018:ffffc90000007ef0 EFLAGS: 00000206
RAX: 000000000004fcfc RBX: 1ffff11024207947 RCX: 0000000080000101
RDX: 0000000000000000 RSI: ffffffff8dfaaa44 RDI: ffffffff8c28ade0
RBP: 0000000000000000 R08: ffffffff9030dcf7 R09: 1ffffffff2061b9e
R10: dffffc0000000000 R11: fffffbfff2061b9f R12: ffff88812103ca40
R13: 0000000000000002 R14: ffff88812103ca38 R15: ffff88812018e000
 net_tx_action+0x5af/0xc30
 handle_softirqs+0x22a/0x840
 do_softirq+0x76/0xd0
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0xf8/0x130
 __alloc_skb+0x1aa/0x7d0
 alloc_skb_with_frags+0xc8/0x760
 sock_alloc_send_pskb+0x878/0x990
 unix_dgram_sendmsg+0x460/0x18d0
 __sys_sendto+0x672/0x710
 __x64_sys_sendto+0xde/0x100
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff3ab8459b5
Code: 8b 44 24 08 48 83 c4 28 48 98 c3 48 98 c3 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 26 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 7a 48 8b 15 44 c4 0c 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffd17869608 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff3ab8459b5
RDX: 0000000000000089 RSI: 0000555b6d1ae8e0 RDI: 0000000000000003
RBP: 0000555b6d1a7910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000013
R13: 00007ff3ab9d3212 R14: 00007ffd17869708 R15: 0000000000000000
 </TASK>
