INFO: task udevd:10548 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:25832 pid:10548 tgid:10548 ppid:5053   task_flags:0x400140 flags:0x00080802
Call Trace:
 <TASK>
 __schedule+0x17d9/0x56c0
 schedule+0x164/0x2b0
 io_schedule+0x7f/0xd0
 folio_wait_bit_common+0x836/0xbc0
 do_read_cache_folio+0x1ac/0x590
 read_part_sector+0xb6/0x2b0
 adfspart_check_POWERTEC+0x9a/0x7a0
 bdev_disk_changed+0x851/0x17a0
 blkdev_get_whole+0x372/0x510
 bdev_open+0x324/0xd70
 blkdev_open+0x461/0x600
 do_dentry_open+0x816/0x1380
 vfs_open+0x3b/0x340
 path_openat+0x2e44/0x3830
 do_file_open+0x23e/0x4a0
 do_sys_openat2+0x115/0x200
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1c157879a4
RSP: 002b:00007ffca132c430 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000055e07ae41780 RCX: 00007f1c157879a4
RDX: 00000000000a0800 RSI: 000055e07ae2aad0 RDI: 00000000ffffff9c
RBP: 000055e07ae2aad0 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 000055e07ae38950 R14: 0000000000000001 R15: 000055e07ae21910
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e959c20 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
1 lock held by kworker/R-kbloc/43:
1 lock held by kworker/R-krxrp/3270:
 #0: ffffffff8e7f6e60 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x31/0x390
2 locks held by getty/5433:
 #0: ffff8881142000a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900034732e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45a/0x1360
2 locks held by kworker/0:2H/14067:
 #0: ffff888161eb3140 ((wq_completion)kblockd){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #1: ffffc90007d6fc40 ((work_completion)(&q->timeout_work)){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
3 locks held by kworker/u8:6/14636:
 #0: ffff888110a21140 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #1: ffffc90007ca7c40 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #2: ffffffff8fdeac00 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_verify_work+0x19/0x30
1 lock held by kworker/u11:2/30134:
 #0: ffffffff8e7f6e60 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x31/0x390
3 locks held by kworker/u9:3/5753:
 #0: ffff8881000ac140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #1: ffffc90000127c40 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #2: ffffffff8fdeac00 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60
4 locks held by kworker/0:0/8779:
2 locks held by kworker/0:1/8780:
3 locks held by kworker/1:5/10105:
 #0: ffff88810006b140 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #1: ffffc90009097c40 ((work_completion)(&(&ovs_net->masks_rebalance)->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #2: ffffffff90159820 (ovs_mutex){+.+.}-{4:4}, at: ovs_dp_masks_rebalance+0x2f/0xe0
1 lock held by udevd/10548:
 #0: ffff88816da88350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xde/0xd70
1 lock held by udevd/11426:
 #0: ffff88816d8be350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xde/0xd70
5 locks held by kworker/0:1H/13433:
2 locks held by syz.6.11288/17087:
 #0: ffffffff8fdeac00 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x3e/0x1c0
 #1: ffffffff8e7e75b0 (cpu_hotplug_lock){++++}-{0:0}, at: unregister_netdevice_many_notify+0xcac/0x2150
1 lock held by syz.7.11289/17100:
 #0: ffffffff8fdeac00 (rtnl_mutex){+.+.}-{4:4}, at: __tun_chr_ioctl+0x3bc/0x1e10
1 lock held by syz.7.11289/17102:
 #0: ffffffff8fdeac00 (rtnl_mutex){+.+.}-{4:4}, at: devinet_ioctl+0x2fb/0x1c50
2 locks held by syz.8.11290/17109:
 #0: ffffffff8f557a28 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x23/0x250
 #1: ffffffff8fdeac00 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8a3/0x1bd0
1 lock held by syz.8.11290/17110:
 #0: ffffffff8fdeac00 (rtnl_mutex){+.+.}-{4:4}, at: rtnetlink_rcv_msg+0x767/0xc00
1 lock held by syz.8.11290/17111:
 #0: ffffffff8fdeac00 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8a3/0x1bd0
1 lock held by syz.8.11290/17112:
 #0: ffffffff8fdeac00 (rtnl_mutex){+.+.}-{4:4}, at: rtnetlink_rcv_msg+0x767/0xc00
1 lock held by syz-executor/17115:
 #0: ffffffff8fdeac00 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x464/0x19e0
1 lock held by syz-executor/17120:
 #0: ffffffff8fdeac00 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x464/0x19e0
1 lock held by syz-executor/17126:
 #0: ffffffff8fdeac00 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x464/0x19e0
1 lock held by syz-executor/17134:
 #0: ffffffff8fdeac00 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x464/0x19e0
1 lock held by syz-executor/17140:
 #0: ffffffff8fdeac00 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x464/0x19e0
1 lock held by syz-executor/17145:
 #0: ffffffff8fdeac00 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x464/0x19e0
1 lock held by syz-executor/17152:
 #0: ffffffff8fdeac00 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x464/0x19e0
1 lock held by syz-executor/17158:
 #0: ffffffff8fdeac00 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x464/0x19e0

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

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/0x380
 sys_info+0x135/0x170
 watchdog+0xfd7/0x1030
 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: 13433 Comm: kworker/0:1H 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
Workqueue:  0x0 (kblockd)
RIP: 0010:validate_xmit_skb+0x9b/0x14f0
Code: 47 40 f8 81 e3 00 00 00 20 0f 85 e9 00 00 00 e8 7b 43 40 f8 4d 85 f6 0f 84 2d 01 00 00 4c 89 7c 24 08 4c 89 f7 e8 65 de ff ff <49> 89 c4 49 8d 9e 9c 00 00 00 49 89 df 49 c1 ef 03 41 0f b6 04 2f
RSP: 0018:ffffc90000006c90 EFLAGS: 00000246
RAX: 0000052e401d4c69 RBX: 0000000000000000 RCX: ffff88810e9f3b80
RDX: 0000000000000100 RSI: 0000000000000008 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffff88810e9f3b80 R09: 0000000000000002
R10: 0000000000004888 R11: 0000000000000100 R12: 0000000000000000
R13: ffff88805baadb81 R14: ffff88805baadb00 R15: ffff8881bee24000
FS:  0000000000000000(0000) GS:ffff88818dc2c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f056efe8158 CR3: 0000000111a1a000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 validate_xmit_skb_list+0x84/0x120
 sch_direct_xmit+0xde/0x4c0
 __qdisc_run+0xb11/0x1620
 __dev_queue_xmit+0x1c00/0x37f0
 ip_finish_output2+0xbda/0x10b0
 ip_output+0x29f/0x450
 synproxy_send_client_synack+0x89b/0xde0
 nft_synproxy_eval_v4+0x362/0x4e0
 nft_synproxy_do_eval+0x335/0x550
 nft_do_chain+0x48d/0x1b10
 nft_do_chain_inet+0x360/0x4b0
 nf_hook_slow+0xc5/0x220
 NF_HOOK+0x21f/0x3c0
 NF_HOOK+0x336/0x3c0
 process_backlog+0xa34/0x1860
 __napi_poll+0xaa/0x330
 net_rx_action+0x61d/0xf50
 handle_softirqs+0x225/0x840
 __irq_exit_rcu+0xca/0x220
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:_raw_spin_unlock_irqrestore+0x47/0x80
Code: f7 e8 2d 6c ec f5 f7 c3 00 02 00 00 74 05 e8 f0 50 18 f6 9c 58 a9 00 02 00 00 75 27 f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 74 82 dd f5 65 8b 05 4d e3 88 07 85 c0 74 18 5b 41 5e c3 cc cc
RSP: 0018:ffffc900085377e8 EFLAGS: 00000206
RAX: 0000000000000006 RBX: 0000000000000202 RCX: 0000000080000001
RDX: 0000000000000007 RSI: ffffffff8dfdfe36 RDI: 0000000000000001
RBP: ffffc90008537890 R08: ffffffff9032cdf7 R09: 1ffffffff20659be
R10: dffffc0000000000 R11: fffffbfff20659bf R12: ffff88816041eb40
R13: 0000000000000000 R14: ffff88816041eb40 R15: 0000000000000000
 __slab_free+0x222/0x2c0
 qlist_free_all+0x99/0x100
 kasan_quarantine_reduce+0x148/0x160
 __kasan_slab_alloc+0x22/0x80
 __kmalloc_cache_noprof+0x2ab/0x660
 __kthread_create_on_node+0x115/0x3d0
 kthread_create_on_node+0xeb/0x140
 create_worker+0x2e3/0x7b0
 worker_thread+0x4c9/0xfb0
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
