[ 2.557513] 8021q: 802.1Q VLAN Support v1.8 [ 2.827098] br1: port 1(veth1) entered blocking state [ 2.827182] br1: port 1(veth1) entered disabled state [ 2.827263] veth1: entered allmulticast mode [ 2.827370] veth1: entered promiscuous mode [ 2.838611] br1: port 1(veth1) entered blocking state [ 2.838692] br1: port 1(veth1) entered forwarding state [ 16.106307] ------------[ cut here ]------------ [ 16.106454] refcount_t: underflow; use-after-free. [ 16.106518] WARNING: CPU: 3 PID: 434 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 16.106610] Modules linked in: bridge stp llc 8021q vrf veth [ 16.106684] CPU: 3 UID: 0 PID: 434 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 16.106781] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 16.106846] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 16.106899] Code: 92 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 11 92 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 [ 16.107080] RSP: 0018:ffff9f1ec08bf730 EFLAGS: 00010282 [ 16.107132] RAX: 0000000000000000 RBX: ffff9f1ec08bf740 RCX: 00000000ffffdfff [ 16.107216] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 16.107297] RBP: ffff9f1ec08bf248 R08: ffffffff92556a28 R09: 00000000ffffdfff [ 16.107373] R10: ffffffff92476a40 R11: ffffffff92526a40 R12: dead000000000122 [ 16.107452] R13: 00000000fffbaa7e R14: 0000000000000001 R15: ffff92e1c48b3000 [ 16.107533] FS: 00007fb3ca445800(0000) GS:ffff92e26c159000(0000) knlGS:0000000000000000 [ 16.107619] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 16.107693] CR2: 000055d7430b16a0 CR3: 00000000032e9003 CR4: 0000000000772ef0 [ 16.107774] PKRU: 55555554 [ 16.107799] Call Trace: [ 16.107827] [ 16.107860] netdev_run_todo+0x21a/0x550 [ 16.107911] rtnl_dellink+0x15b/0x350 [ 16.107960] ? virtio_fs_enqueue_req+0x352/0x570 [ 16.108025] ? netdev_run_todo+0x63/0x550 [ 16.108064] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 16.108116] rtnetlink_rcv_msg+0x358/0x400 [ 16.108155] ? get_page_from_freelist+0x15b4/0x1770 [ 16.108220] ? rtnl_calcit.isra.0+0x110/0x110 [ 16.108276] netlink_rcv_skb+0x57/0x100 [ 16.108326] netlink_unicast+0x252/0x380 [ 16.108370] ? __alloc_skb+0xdb/0x190 [ 16.108418] netlink_sendmsg+0x1be/0x3e0 [ 16.108457] ____sys_sendmsg+0x132/0x260 [ 16.108503] ? copy_msghdr_from_user+0x6c/0xa0 [ 16.108555] ___sys_sendmsg+0x87/0xd0 [ 16.108595] ? do_wp_page+0x369/0xe90 [ 16.108644] ? ___pte_offset_map+0x1b/0xd0 [ 16.108699] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 16.108757] ? fsnotify_grab_connector+0x48/0x80 [ 16.108818] ? fsnotify_destroy_marks+0x29/0x150 [ 16.108870] __sys_sendmsg+0x71/0xd0 [ 16.108917] do_syscall_64+0xa4/0xfd0 [ 16.108964] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 16.109017] RIP: 0033:0x7fb3ca6131d7 [ 16.109055] 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 [ 16.109240] RSP: 002b:00007ffcac45ddc8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 16.109322] RAX: ffffffffffffffda RBX: 00007ffcac45e4f0 RCX: 00007fb3ca6131d7 [ 16.109400] RDX: 0000000000000000 RSI: 00007ffcac45de30 RDI: 0000000000000005 [ 16.109480] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 16.109559] R10: 00007fb3ca50ff60 R11: 0000000000000246 R12: 0000000000000002 [ 16.109636] R13: 00000000690dedcf R14: 0000000000499600 R15: 0000000000000000 [ 16.109716] [ 16.109740] ---[ end trace 0000000000000000 ]--- [ 16.110435] ip (434) used greatest stack depth: 11744 bytes left [ 16.185448] br1: port 1(veth1) entered disabled state [ 16.197935] veth1: left allmulticast mode [ 16.198036] veth1: left promiscuous mode [ 16.198109] br1: port 1(veth1) entered disabled state