[ 2.438417] 8021q: 802.1Q VLAN Support v1.8 [ 2.731449] br1: port 1(veth1) entered blocking state [ 2.731523] br1: port 1(veth1) entered disabled state [ 2.731592] veth1: entered allmulticast mode [ 2.731714] veth1: entered promiscuous mode [ 2.743081] br1: port 1(veth1) entered blocking state [ 2.743202] br1: port 1(veth1) entered forwarding state [ 10.957666] ------------[ cut here ]------------ [ 10.957797] refcount_t: underflow; use-after-free. [ 10.957856] WARNING: CPU: 0 PID: 364 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 10.957931] Modules linked in: bridge stp llc 8021q vrf veth [ 10.958001] CPU: 0 UID: 0 PID: 364 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 10.958082] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.958140] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 10.958186] Code: 89 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 89 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 [ 10.958339] RSP: 0018:ffffb80d00597730 EFLAGS: 00010282 [ 10.958387] RAX: 0000000000000000 RBX: ffffb80d00597740 RCX: 00000000ffffdfff [ 10.958463] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 10.958539] RBP: ffffb80d00597248 R08: ffffffff89556a28 R09: 00000000ffffdfff [ 10.958621] R10: ffffffff89476a40 R11: ffffffff89526a40 R12: dead000000000122 [ 10.958695] R13: 00000000fffb9667 R14: 0000000000000001 R15: ffff961bc31dc000 [ 10.958764] FS: 00007f8cb1f7c800(0000) GS:ffff961c74fd9000(0000) knlGS:0000000000000000 [ 10.958840] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 10.958893] CR2: 0000557500ccb148 CR3: 000000000480a002 CR4: 0000000000772ef0 [ 10.958961] PKRU: 55555554 [ 10.958983] Call Trace: [ 10.959010] [ 10.959038] netdev_run_todo+0x21a/0x550 [ 10.959089] rtnl_dellink+0x15b/0x350 [ 10.959135] ? virtio_fs_enqueue_req+0x352/0x570 [ 10.959194] ? netdev_run_todo+0x63/0x550 [ 10.959228] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 10.959272] rtnetlink_rcv_msg+0x358/0x400 [ 10.959306] ? get_page_from_freelist+0x15b4/0x1770 [ 10.959364] ? rtnl_calcit.isra.0+0x110/0x110 [ 10.959414] netlink_rcv_skb+0x57/0x100 [ 10.959461] netlink_unicast+0x252/0x380 [ 10.959499] ? __alloc_skb+0xdb/0x190 [ 10.959542] netlink_sendmsg+0x1be/0x3e0 [ 10.959578] ____sys_sendmsg+0x132/0x260 [ 10.959627] ? copy_msghdr_from_user+0x6c/0xa0 [ 10.959686] ___sys_sendmsg+0x87/0xd0 [ 10.959719] ? do_wp_page+0x369/0xe90 [ 10.959765] ? ___pte_offset_map+0x1b/0xd0 [ 10.959802] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 10.959855] ? fsnotify_grab_connector+0x48/0x80 [ 10.959903] ? fsnotify_destroy_marks+0x29/0x150 [ 10.959954] __sys_sendmsg+0x71/0xd0 [ 10.959995] do_syscall_64+0xa4/0xfd0 [ 10.960037] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 10.960094] RIP: 0033:0x7f8cb214a1d7 [ 10.960134] 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 [ 10.960305] RSP: 002b:00007ffe85fb50a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 10.960376] RAX: ffffffffffffffda RBX: 00007ffe85fb57d0 RCX: 00007f8cb214a1d7 [ 10.960451] RDX: 0000000000000000 RSI: 00007ffe85fb5110 RDI: 0000000000000005 [ 10.960525] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 10.960600] R10: 00007f8cb2046f60 R11: 0000000000000246 R12: 0000000000000002 [ 10.960676] R13: 00000000690de822 R14: 0000000000499600 R15: 0000000000000000 [ 10.960754] [ 10.960779] ---[ end trace 0000000000000000 ]--- [ 10.961497] ip (364) used greatest stack depth: 11744 bytes left [ 13.030589] br1: port 1(veth1) entered disabled state [ 13.042689] veth1: left allmulticast mode [ 13.042765] veth1: left promiscuous mode [ 13.042818] br1: port 1(veth1) entered disabled state