[ 2.404564] 8021q: 802.1Q VLAN Support v1.8 [ 2.686970] br1: port 1(veth1) entered blocking state [ 2.687038] br1: port 1(veth1) entered disabled state [ 2.687112] veth1: entered allmulticast mode [ 2.687215] veth1: entered promiscuous mode [ 2.697335] br1: port 2(veth2) entered blocking state [ 2.697436] br1: port 2(veth2) entered disabled state [ 2.697547] veth2: entered allmulticast mode [ 2.697651] veth2: entered promiscuous mode [ 2.707750] br1: port 1(veth1) entered blocking state [ 2.707823] br1: port 1(veth1) entered forwarding state [ 2.717770] br1: port 2(veth2) entered blocking state [ 2.717883] br1: port 2(veth2) entered forwarding state [ 9.966987] veth2: left allmulticast mode [ 9.967058] veth2: left promiscuous mode [ 9.967107] br1: port 2(veth2) entered disabled state [ 9.980349] veth1: left allmulticast mode [ 9.980417] veth1: left promiscuous mode [ 9.980483] br1: port 1(veth1) entered disabled state [ 12.002855] br1: port 1(veth1) entered blocking state [ 12.002941] br1: port 1(veth1) entered disabled state [ 12.003008] veth1: entered allmulticast mode [ 12.003110] veth1: entered promiscuous mode [ 12.003158] br1: port 1(veth1) entered blocking state [ 12.003199] br1: port 1(veth1) entered forwarding state [ 12.014975] br1: port 2(veth2) entered blocking state [ 12.015084] br1: port 2(veth2) entered disabled state [ 12.015162] veth2: entered allmulticast mode [ 12.015271] veth2: entered promiscuous mode [ 12.015348] br1: port 2(veth2) entered blocking state [ 12.015410] br1: port 2(veth2) entered forwarding state [ 14.057583] ------------[ cut here ]------------ [ 14.057714] refcount_t: underflow; use-after-free. [ 14.057780] WARNING: CPU: 0 PID: 413 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 14.057844] Modules linked in: bridge stp llc 8021q vrf veth [ 14.057902] CPU: 0 UID: 0 PID: 413 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 14.057970] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.058018] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 14.058058] Code: 87 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 91 87 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 [ 14.058200] RSP: 0018:ffffc16b8088f730 EFLAGS: 00010282 [ 14.058242] RAX: 0000000000000000 RBX: ffffc16b8088f740 RCX: 00000000ffffdfff [ 14.058311] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 14.058366] RBP: ffffc16b8088f248 R08: ffffffff87d56a28 R09: 00000000ffffdfff [ 14.058423] R10: ffffffff87c76a40 R11: ffffffff87d26a40 R12: dead000000000122 [ 14.058492] R13: 00000000fffba273 R14: 0000000000000001 R15: ffffa08486e70000 [ 14.058572] FS: 00007f97567a6800(0000) GS:ffffa085367d9000(0000) knlGS:0000000000000000 [ 14.058634] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 14.058690] CR2: 00000000004e6668 CR3: 00000000033c6004 CR4: 0000000000772ef0 [ 14.058759] PKRU: 55555554 [ 14.058780] Call Trace: [ 14.058804] [ 14.058827] netdev_run_todo+0x21a/0x550 [ 14.058868] rtnl_dellink+0x15b/0x350 [ 14.058917] ? virtio_fs_enqueue_req+0x352/0x570 [ 14.058960] ? netdev_run_todo+0x63/0x550 [ 14.058993] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 14.059033] rtnetlink_rcv_msg+0x358/0x400 [ 14.059067] ? get_page_from_freelist+0x15b4/0x1770 [ 14.059120] ? rtnl_calcit.isra.0+0x110/0x110 [ 14.059164] netlink_rcv_skb+0x57/0x100 [ 14.059201] netlink_unicast+0x252/0x380 [ 14.059231] ? __alloc_skb+0xdb/0x190 [ 14.059277] netlink_sendmsg+0x1be/0x3e0 [ 14.059318] ____sys_sendmsg+0x132/0x260 [ 14.059355] ? copy_msghdr_from_user+0x6c/0xa0 [ 14.059403] ___sys_sendmsg+0x87/0xd0 [ 14.059437] ? do_wp_page+0x369/0xe90 [ 14.059482] ? ___pte_offset_map+0x1b/0xd0 [ 14.059531] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 14.059576] ? fsnotify_grab_connector+0x48/0x80 [ 14.059623] ? fsnotify_destroy_marks+0x29/0x150 [ 14.059662] __sys_sendmsg+0x71/0xd0 [ 14.059710] do_syscall_64+0xa4/0xfd0 [ 14.059743] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 14.059797] RIP: 0033:0x7f97569741d7 [ 14.059838] 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 [ 14.059967] RSP: 002b:00007ffdf04d35a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 14.060026] RAX: ffffffffffffffda RBX: 00007ffdf04d3cd0 RCX: 00007f97569741d7 [ 14.060089] RDX: 0000000000000000 RSI: 00007ffdf04d3610 RDI: 0000000000000005 [ 14.060142] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 14.060198] R10: 00007f9756870f60 R11: 0000000000000246 R12: 0000000000000002 [ 14.060265] R13: 00000000690dedea R14: 0000000000499600 R15: 0000000000000000 [ 14.060334] [ 14.060369] ---[ end trace 0000000000000000 ]--- [ 14.061062] ip (413) used greatest stack depth: 11744 bytes left [ 14.136012] br1: port 2(veth2) entered disabled state [ 14.136136] veth2: left allmulticast mode [ 14.136201] veth2: left promiscuous mode [ 14.136274] br1: port 2(veth2) entered disabled state [ 14.147203] br1: port 1(veth1) entered disabled state [ 14.147287] veth1: left allmulticast mode [ 14.147334] veth1: left promiscuous mode [ 14.147377] br1: port 1(veth1) entered disabled state