[ 2.415986] 8021q: 802.1Q VLAN Support v1.8 [ 2.736332] br1: port 1(veth1) entered blocking state [ 2.736410] br1: port 1(veth1) entered disabled state [ 2.736471] veth1: entered allmulticast mode [ 2.736572] veth1: entered promiscuous mode [ 2.748713] br1: port 2(veth2) entered blocking state [ 2.748827] br1: port 2(veth2) entered disabled state [ 2.748918] veth2: entered allmulticast mode [ 2.749039] veth2: entered promiscuous mode [ 2.761480] br1: port 1(veth1) entered blocking state [ 2.761600] br1: port 1(veth1) entered forwarding state [ 2.776118] br1: port 2(veth2) entered blocking state [ 2.776203] br1: port 2(veth2) entered forwarding state [ 10.047922] veth2: left allmulticast mode [ 10.048007] veth2: left promiscuous mode [ 10.048094] br1: port 2(veth2) entered disabled state [ 10.060971] veth1: left allmulticast mode [ 10.061041] veth1: left promiscuous mode [ 10.061087] br1: port 1(veth1) entered disabled state [ 12.082955] br1: port 1(veth1) entered blocking state [ 12.083024] br1: port 1(veth1) entered disabled state [ 12.083086] veth1: entered allmulticast mode [ 12.083182] veth1: entered promiscuous mode [ 12.083241] br1: port 1(veth1) entered blocking state [ 12.083296] br1: port 1(veth1) entered forwarding state [ 12.095972] br1: port 2(veth2) entered blocking state [ 12.096048] br1: port 2(veth2) entered disabled state [ 12.096111] veth2: entered allmulticast mode [ 12.096228] veth2: entered promiscuous mode [ 12.096290] br1: port 2(veth2) entered blocking state [ 12.096344] br1: port 2(veth2) entered forwarding state [ 14.153930] ------------[ cut here ]------------ [ 14.154071] refcount_t: underflow; use-after-free. [ 14.154150] WARNING: CPU: 2 PID: 410 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 14.154249] Modules linked in: bridge stp llc 8021q vrf veth [ 14.154324] CPU: 2 UID: 0 PID: 410 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 14.154437] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.154511] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 14.154578] Code: ab e8 18 df ba ff 90 0f 0b 90 90 c3 80 3d f9 da eb 00 00 75 89 c6 05 f0 da eb 00 01 90 48 c7 c7 28 e0 71 ab e8 f5 de ba ff 90 <0f> 0b 90 90 c3 80 3d d4 da eb 00 00 0f 85 62 ff ff ff c6 05 c7 da [ 14.154762] RSP: 0018:ffffb2bb80837730 EFLAGS: 00010282 [ 14.154830] RAX: 0000000000000000 RBX: ffffb2bb80837740 RCX: 00000000ffffdfff [ 14.154926] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 14.155008] RBP: ffffb2bb80837248 R08: ffffffffabb56a28 R09: 00000000ffffdfff [ 14.155089] R10: ffffffffaba76a40 R11: ffffffffabb26a40 R12: dead000000000122 [ 14.155165] R13: 00000000fffba2e3 R14: 0000000000000001 R15: ffff8f59031cd000 [ 14.155244] FS: 00007f04f6e3e800(0000) GS:ffff8f5992ad9000(0000) knlGS:0000000000000000 [ 14.155322] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 14.155401] CR2: 00000000004e6668 CR3: 0000000001b26005 CR4: 0000000000772ef0 [ 14.155479] PKRU: 55555554 [ 14.155531] Call Trace: [ 14.155582] [ 14.155626] netdev_run_todo+0x21a/0x550 [ 14.155690] rtnl_dellink+0x15b/0x350 [ 14.155772] ? virtio_fs_enqueue_req+0x352/0x570 [ 14.155843] ? netdev_run_todo+0x63/0x550 [ 14.155949] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 14.156020] rtnetlink_rcv_msg+0x358/0x400 [ 14.156081] ? get_page_from_freelist+0x15b4/0x1770 [ 14.156151] ? rtnl_calcit.isra.0+0x110/0x110 [ 14.156227] netlink_rcv_skb+0x57/0x100 [ 14.156292] netlink_unicast+0x252/0x380 [ 14.156352] ? __alloc_skb+0xdb/0x190 [ 14.156423] netlink_sendmsg+0x1be/0x3e0 [ 14.156482] ____sys_sendmsg+0x132/0x260 [ 14.156542] ? copy_msghdr_from_user+0x6c/0xa0 [ 14.156606] ___sys_sendmsg+0x87/0xd0 [ 14.156661] ? do_wp_page+0x369/0xe90 [ 14.156727] ? ___pte_offset_map+0x1b/0xd0 [ 14.156782] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 14.156856] ? fsnotify_grab_connector+0x48/0x80 [ 14.156954] ? fsnotify_destroy_marks+0x29/0x150 [ 14.157016] __sys_sendmsg+0x71/0xd0 [ 14.157071] do_syscall_64+0xa4/0xfd0 [ 14.157129] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 14.157193] RIP: 0033:0x7f04f700c1d7 [ 14.157249] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 [ 14.157399] RSP: 002b:00007ffdc03dfc28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 14.157477] RAX: ffffffffffffffda RBX: 00007ffdc03e0350 RCX: 00007f04f700c1d7 [ 14.157572] RDX: 0000000000000000 RSI: 00007ffdc03dfc90 RDI: 0000000000000005 [ 14.157661] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 14.157755] R10: 00007f04f6f08f60 R11: 0000000000000246 R12: 0000000000000002 [ 14.157909] R13: 00000000690de7eb R14: 0000000000499600 R15: 0000000000000000 [ 14.157989] [ 14.158032] ---[ end trace 0000000000000000 ]--- [ 14.158675] ip (410) used greatest stack depth: 11744 bytes left [ 14.243233] br1: port 2(veth2) entered disabled state [ 14.243394] veth2: left allmulticast mode [ 14.243471] veth2: left promiscuous mode [ 14.243549] br1: port 2(veth2) entered disabled state [ 14.255555] br1: port 1(veth1) entered disabled state [ 14.255652] veth1: left allmulticast mode [ 14.255712] veth1: left promiscuous mode [ 14.255766] br1: port 1(veth1) entered disabled state