[ 2.159809] ip (248) used greatest stack depth: 12408 bytes left [ 2.209011] ip (256) used greatest stack depth: 12296 bytes left [ 2.401131] 8021q: 802.1Q VLAN Support v1.8 [ 2.662774] br1: port 1(veth1) entered blocking state [ 2.662844] br1: port 1(veth1) entered disabled state [ 2.662897] veth1: entered allmulticast mode [ 2.662977] veth1: entered promiscuous mode [ 2.674726] br1: port 1(veth1) entered blocking state [ 2.674792] br1: port 1(veth1) entered forwarding state [ 15.982177] ------------[ cut here ]------------ [ 15.982375] refcount_t: underflow; use-after-free. [ 15.982475] WARNING: CPU: 2 PID: 435 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 15.982583] Modules linked in: bridge stp llc 8021q vrf veth [ 15.982680] CPU: 2 UID: 0 PID: 435 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 15.982790] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.982876] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 15.982954] Code: be 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 be 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 [ 15.983125] RSP: 0018:ffff97e2408b7730 EFLAGS: 00010282 [ 15.983205] RAX: 0000000000000000 RBX: ffff97e2408b7740 RCX: 00000000ffffdfff [ 15.983304] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 15.983402] RBP: ffff97e2408b7248 R08: ffffffffbf356a28 R09: 00000000ffffdfff [ 15.983497] R10: ffffffffbf276a40 R11: ffffffffbf326a40 R12: dead000000000122 [ 15.983595] R13: 00000000fffbaa03 R14: 0000000000000001 R15: ffff8aa2c112f000 [ 15.983684] FS: 00007f6193ff8800(0000) GS:ffff8aa33f2d9000(0000) knlGS:0000000000000000 [ 15.983766] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 15.983855] CR2: 00000000004e5848 CR3: 0000000003682002 CR4: 0000000000772ef0 [ 15.983954] PKRU: 55555554 [ 15.984005] Call Trace: [ 15.984060] [ 15.984126] netdev_run_todo+0x21a/0x550 [ 15.984205] rtnl_dellink+0x15b/0x350 [ 15.984268] ? virtio_fs_enqueue_req+0x352/0x570 [ 15.984351] ? netdev_run_todo+0x63/0x550 [ 15.984417] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 15.984496] rtnetlink_rcv_msg+0x358/0x400 [ 15.984564] ? get_page_from_freelist+0x15b4/0x1770 [ 15.984645] ? rtnl_calcit.isra.0+0x110/0x110 [ 15.984725] netlink_rcv_skb+0x57/0x100 [ 15.984798] netlink_unicast+0x252/0x380 [ 15.984861] ? __alloc_skb+0xdb/0x190 [ 15.984930] netlink_sendmsg+0x1be/0x3e0 [ 15.984997] ____sys_sendmsg+0x132/0x260 [ 15.985066] ? copy_msghdr_from_user+0x6c/0xa0 [ 15.985152] ___sys_sendmsg+0x87/0xd0 [ 15.985220] ? do_wp_page+0x369/0xe90 [ 15.985292] ? ___pte_offset_map+0x1b/0xd0 [ 15.985360] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 15.985441] ? fsnotify_grab_connector+0x48/0x80 [ 15.985520] ? fsnotify_destroy_marks+0x29/0x150 [ 15.985600] __sys_sendmsg+0x71/0xd0 [ 15.985669] do_syscall_64+0xa4/0xfd0 [ 15.985740] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 15.985820] RIP: 0033:0x7f61941c61d7 [ 15.985889] 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 [ 15.986082] RSP: 002b:00007ffc8cb57cb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 15.986198] RAX: ffffffffffffffda RBX: 00007ffc8cb583e0 RCX: 00007f61941c61d7 [ 15.986289] RDX: 0000000000000000 RSI: 00007ffc8cb57d20 RDI: 0000000000000005 [ 15.986465] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 15.986581] R10: 00007f61940c2f60 R11: 0000000000000246 R12: 0000000000000002 [ 15.986695] R13: 00000000690de7d2 R14: 0000000000499600 R15: 0000000000000000 [ 15.986811] [ 15.986873] ---[ end trace 0000000000000000 ]--- [ 15.987653] ip (435) used greatest stack depth: 11744 bytes left [ 16.059509] br1: port 1(veth1) entered disabled state [ 16.071994] veth1: left allmulticast mode [ 16.072077] veth1: left promiscuous mode [ 16.072149] br1: port 1(veth1) entered disabled state