INFO: task udevd:20882 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:22496 pid:20882 tgid:20882 ppid:5259   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x15dd/0x52d0
 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+0x92/0xef0
 bdev_disk_changed+0x7ba/0x1550
 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+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2b945169a4
RSP: 002b:00007fffdfc2d5d0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000559e10851780 RCX: 00007f2b945169a4
RDX: 00000000000a0800 RSI: 0000559e1084c820 RDI: 00000000ffffff9c
RBP: 0000559e1084c820 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 0000559e10848950 R14: 0000000000000001 R15: 0000559e10831910
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e75e5a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5635:
 #0: ffff888168ea20a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900033a02f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13c0
1 lock held by udevd/20882:
 #0: ffff88816cefa358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
4 locks held by syz.6.8393/16141:
1 lock held by syz.6.8393/16148:
 #0: ffff88818806b660 (sk_lock-AF_INET){+.+.}-{0:0}, at: do_tcp_setsockopt+0x1d2/0x2060
1 lock held by syz.6.8393/16149:
 #0: ffff88818806b660 (sk_lock-AF_INET){+.+.}-{0:0}, at: tcp_recvmsg+0x1f2/0x7f0
4 locks held by syz.1.8397/16162:
 #0: ffff88812091a008 (&sb->s_type->i_mutex_key#14){+.+.}-{4:4}, at: sock_close+0x9b/0x240
 #1: ffffffff8fc3ceb0 ((netlink_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x54/0x90
 #2: ffff88810a5590d8 (&nft_net->commit_mutex){+.+.}-{4:4}, at: nft_rcv_nl_event+0x13d/0xdb0
 #3: ffffffff8e7648b8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2d0/0x770

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

NMI backtrace for cpu 0
CPU: 0 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+0xfd9/0x1030
 kthread+0x388/0x470
 ret_from_fork+0x51e/0xb90
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 16141 Comm: syz.6.8393 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:io_serial_out+0x7c/0xc0
Code: 58 84 fc 44 89 f9 d3 e5 49 83 c6 40 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 6c aa ee fc 41 03 2e 89 d8 89 ea ee <5b> 41 5c 41 5e 41 5f 5d c3 cc cc cc cc cc 44 89 f9 80 e1 07 38 c1
RSP: 0018:ffffc90000a07a50 EFLAGS: 00000002
RAX: 0000000000000036 RBX: 0000000000000036 RCX: 0000000000000000
RDX: 00000000000003f8 RSI: 0000000000000000 RDI: 0000000000000020
RBP: 00000000000003f8 R08: ffff888104ad8237 R09: 1ffff1102095b046
R10: dffffc0000000000 R11: ffffffff85416760 R12: dffffc0000000000
R13: ffffffff9a2c5a44 R14: ffffffff9a5ddec0 R15: 0000000000000000
FS:  00007f77f4c176c0(0000) GS:ffff8882a9451000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc6c11ba440 CR3: 000000019e00c000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 serial8250_console_write+0x140c/0x1ba0
 console_flush_all+0x718/0xb20
 console_unlock+0xd1/0x1c0
 vprintk_emit+0x485/0x560
 _printk+0xdd/0x130
 ip_vs_schedule+0x15f5/0x1d80
 udp_conn_schedule+0x359/0x750
 ip_vs_in_hook+0x1005/0x22d0
 nf_hook_slow+0xc5/0x220
 nf_hook+0x22a/0x3a0
 __ip_local_out+0x558/0x6a0
 ip_local_out+0x2a/0x190
 iptunnel_xmit+0x616/0xca0
 udp_tunnel_xmit_skb+0x2b8/0x410
 tipc_udp_xmit+0x8ee/0xc10
 tipc_bearer_xmit_skb+0x2b3/0x400
 tipc_disc_timeout+0x595/0x6f0
 call_timer_fn+0x192/0x640
 __run_timer_base+0x652/0x8b0
 run_timer_softirq+0xb7/0x170
 handle_softirqs+0x22a/0x870
 __irq_exit_rcu+0x5f/0x150
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:kasan_check_range+0x4/0x2c0
Code: 48 89 df 48 c7 c6 b4 e7 16 8e e8 97 20 f8 fe 90 0f 0b cc cc cc cc 90 90 90 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
RSP: 0018:ffffc90003a96890 EFLAGS: 00000246
RAX: ffffc90003a97318 RBX: 0000000000000010 RCX: ffffffff8176985e
RDX: 0000000000000001 RSI: 0000000000000010 RDI: ffffc90003a969d8
RBP: 0000000000000000 R08: 0000000000000001 R09: ffffffff8e75e5a0
R10: ffffc90003a969d8 R11: ffffffff81b0dc10 R12: ffffc90003a969d8
R13: 1ffff92000752d33 R14: ffffc90003a969d8 R15: ffffc90003a969d0
 __asan_memset+0x22/0x50
 unwind_next_frame+0xeae/0x23c0
 arch_stack_walk+0x11b/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_node_noprof+0x384/0x690
 __alloc_skb+0x27d/0x7d0
 ip_frag_next+0xd1/0xa60
 ip_do_fragment+0x76d/0x1770
 ip_finish_output+0x3b7/0x530
 ip_output+0x29f/0x450
 __ip_queue_xmit+0x116a/0x1bb0
 __tcp_transmit_skb+0x2b30/0x43e0
 tcp_write_xmit+0x16e8/0x6980
 __tcp_push_pending_frames+0x97/0x380
 tcp_rcv_established+0xfd8/0x2740
 tcp_v4_do_rcv+0xa90/0x1430
 __release_sock+0x265/0x3a0
 release_sock+0x5f/0x1f0
 sk_stream_wait_memory+0x72b/0xf80
 tcp_sendmsg_locked+0x23ba/0x5490
 tcp_sendmsg+0x2f/0x50
 __sys_sendto+0x5de/0x710
 __x64_sys_sendto+0xde/0x100
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f77f3d9c819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f77f4c17028 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f77f4015fa0 RCX: 00007f77f3d9c819
RDX: ffffffffffffff94 RSI: 0000200000000000 RDI: 0000000000000005
RBP: 00007f77f3e32c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f77f4016038 R14: 00007f77f4015fa0 R15: 00007ffeccaf2a78
 </TASK>
