INFO: task udevd:19914 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:26184 pid:19914 tgid:19914 ppid:5052   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: 0033:0x7f2e763169a4
RSP: 002b:00007ffeca3c2970 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000055824d48a780 RCX: 00007f2e763169a4
RDX: 00000000000a0800 RSI: 000055824d492050 RDI: 00000000ffffff9c
RBP: 000055824d492050 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 000055824d47baa0 R14: 0000000000000001 R15: 000055824d46a910
 </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
2 locks held by klogd/5041:
2 locks held by getty/5433:
 #0: ffff8881102a10a0 (&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 syz-executor/5603:
1 lock held by udevd/19914:
 #0: ffff8881a56da350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xde/0xd70
3 locks held by kworker/u10:3/31781:
 #0: ffff8881000ac140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #1: ffffc9002b99fc40 ((work_completion)(&map->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #2: ffffffff8e95ff28 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2d0/0x770
1 lock held by syz.2.14785/2949:
 #0: ffffffff8e95fdf8 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x4c/0x530
2 locks held by syz.0.14786/2951:
 #0: ffffffff9034bfe0 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x23/0x250
 #1: ffffffff8e95fdf8 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x4c/0x530

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

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: 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:ipt_do_table+0x8aa/0x15d0
Code: 01 00 00 e8 98 66 81 f7 e9 8c 01 00 00 e8 8e 66 81 f7 49 8d 5e 52 48 89 d8 48 c1 e8 03 48 89 84 24 f8 00 00 00 42 0f b6 04 38 <84> c0 0f 85 78 08 00 00 45 89 ef 44 0f b6 23 44 89 e6 83 e6 01 31
RSP: 0018:ffffc90000006f40 EFLAGS: 00000a02
RAX: 0000000000000000 RBX: ffff8881a2d212f2 RCX: ffff888111e55940
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007120 R08: ffffc9000000709f R09: 0000000000000000
R10: ffffc90000007080 R11: fffff52000000e14 R12: ffff88803beaeb40
R13: 0000000000000000 R14: ffff8881a2d212a0 R15: dffffc0000000000
FS:  00007f3b326f0380(0000) GS:ffff88818dc25000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb3bc29bff8 CR3: 000000016f38c000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 nf_hook_slow+0xc5/0x220
 nf_hook+0x22a/0x3a0
 ip_output+0x269/0x450
 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
 do_softirq+0x76/0xd0
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0xf8/0x130
 __alloc_skb+0x1ad/0x7a0
 alloc_skb_with_frags+0xc6/0x760
 sock_alloc_send_pskb+0x878/0x990
 unix_dgram_sendmsg+0x4da/0x17b0
 sock_sendmsg_nosec+0x13a/0x180
 __sys_sendto+0x408/0x5a0
 __x64_sys_sendto+0xde/0x100
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3b328529b5
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:00007fff3b993e58 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f3b328529b5
RDX: 0000000000000051 RSI: 00005604c37b5c30 RDI: 0000000000000003
RBP: 00005604c37ac910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000013
R13: 00007f3b329e0212 R14: 00007fff3b993f58 R15: 0000000000000000
 </TASK>
