[ 2.871772] br: port 1(veth1) entered blocking state [ 2.871873] br: port 1(veth1) entered disabled state [ 2.871933] veth1: entered allmulticast mode [ 2.872021] veth1: entered promiscuous mode [ 2.872184] br: port 1(veth1) entered blocking state [ 2.872235] br: port 1(veth1) entered forwarding state [ 2.885793] br: port 2(veth3) entered blocking state [ 2.885890] br: port 2(veth3) entered disabled state [ 2.885963] veth3: entered allmulticast mode [ 2.886071] veth3: entered promiscuous mode [ 2.886233] br: port 2(veth3) entered blocking state [ 2.886289] br: port 2(veth3) entered forwarding state [ 2.900035] br: port 3(veth4) entered blocking state [ 2.900144] br: port 3(veth4) entered disabled state [ 2.900220] veth4: entered allmulticast mode [ 2.900334] veth4: entered promiscuous mode [ 2.900507] br: port 3(veth4) entered blocking state [ 2.900578] br: port 3(veth4) entered forwarding state [ 77.684659] Mirror/redirect action on [ 77.685985] tc (791) used greatest stack depth: 12000 bytes left [ 105.939785] ------------[ cut here ]------------ [ 105.939917] refcount_t: underflow; use-after-free. [ 105.939997] WARNING: CPU: 0 PID: 957 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 105.940088] Modules linked in: act_mirred cls_matchall sch_red dummy bridge stp llc sch_tbf vrf veth [ 105.940192] CPU: 0 UID: 0 PID: 957 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 105.940288] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 105.940353] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 105.940412] Code: b9 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 f1 b9 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 [ 105.940605] RSP: 0018:ffffa7c60055f730 EFLAGS: 00010282 [ 105.940657] RAX: 0000000000000000 RBX: ffffa7c60055f740 RCX: 00000000ffffdfff [ 105.940740] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 105.940826] RBP: ffffa7c60055f248 R08: ffffffffba356a28 R09: 00000000ffffdfff [ 105.940904] R10: ffffffffba276a40 R11: ffffffffba326a40 R12: dead000000000122 [ 105.940982] R13: 00000000fffd0969 R14: 0000000000000001 R15: ffff95f4068a8000 [ 105.941062] FS: 00007f3fa9d5c800(0000) GS:ffff95f4841d9000(0000) knlGS:0000000000000000 [ 105.941146] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 105.941216] CR2: 00000000004e6340 CR3: 000000000333e006 CR4: 0000000000772ef0 [ 105.941290] PKRU: 55555554 [ 105.941322] Call Trace: [ 105.941349] [ 105.941374] netdev_run_todo+0x21a/0x550 [ 105.941423] rtnl_dellink+0x15b/0x350 [ 105.941472] ? virtio_fs_enqueue_req+0x352/0x570 [ 105.941533] ? netdev_run_todo+0x63/0x550 [ 105.941579] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 105.941636] rtnetlink_rcv_msg+0x358/0x400 [ 105.941685] ? get_page_from_freelist+0x15b4/0x1770 [ 105.941756] ? rtnl_calcit.isra.0+0x110/0x110 [ 105.941813] netlink_rcv_skb+0x57/0x100 [ 105.941857] netlink_unicast+0x252/0x380 [ 105.941897] ? __alloc_skb+0xdb/0x190 [ 105.941938] netlink_sendmsg+0x1be/0x3e0 [ 105.941984] ____sys_sendmsg+0x132/0x260 [ 105.942031] ? copy_msghdr_from_user+0x6c/0xa0 [ 105.942090] ___sys_sendmsg+0x87/0xd0 [ 105.942128] ? do_wp_page+0x369/0xe90 [ 105.942175] ? ___pte_offset_map+0x1b/0xd0 [ 105.942222] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 105.942281] ? fsnotify_grab_connector+0x48/0x80 [ 105.942340] ? fsnotify_destroy_marks+0x29/0x150 [ 105.942392] __sys_sendmsg+0x71/0xd0 [ 105.942440] do_syscall_64+0xa4/0xfd0 [ 105.942485] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 105.942537] RIP: 0033:0x7f3fa9f2a1d7 [ 105.942583] 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 [ 105.942767] RSP: 002b:00007ffd821d7f98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 105.942849] RAX: ffffffffffffffda RBX: 00007ffd821d86c0 RCX: 00007f3fa9f2a1d7 [ 105.942925] RDX: 0000000000000000 RSI: 00007ffd821d8000 RDI: 0000000000000005 [ 105.943002] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 105.943079] R10: 00007f3fa9e26f60 R11: 0000000000000246 R12: 0000000000000002 [ 105.943156] R13: 00000000690debe8 R14: 0000000000499600 R15: 0000000000000000 [ 105.943236] [ 105.943267] ---[ end trace 0000000000000000 ]--- [ 105.943872] ip (957) used greatest stack depth: 11744 bytes left [ 106.014405] br: port 3(veth4) entered disabled state [ 106.014503] veth4: left allmulticast mode [ 106.014549] veth4: left promiscuous mode [ 106.014591] br: port 3(veth4) entered disabled state [ 106.027577] br: port 2(veth3) entered disabled state [ 106.027684] veth3: left allmulticast mode [ 106.027743] veth3: left promiscuous mode [ 106.027793] br: port 2(veth3) entered disabled state [ 106.040920] br: port 1(veth1) entered disabled state [ 106.041036] veth1: left allmulticast mode [ 106.041077] veth1: left promiscuous mode [ 106.041131] br: port 1(veth1) entered disabled state