[ 2.139080] ip (249) used greatest stack depth: 12424 bytes left [ 2.434595] 8021q: 802.1Q VLAN Support v1.8 [ 2.758606] br1: port 1(veth1) entered blocking state [ 2.758719] br1: port 1(veth1) entered disabled state [ 2.758811] veth1: entered allmulticast mode [ 2.758924] veth1: entered promiscuous mode [ 2.770923] br1: port 1(veth1) entered blocking state [ 2.771011] br1: port 1(veth1) entered forwarding state [ 10.984756] ------------[ cut here ]------------ [ 10.984899] refcount_t: underflow; use-after-free. [ 10.984962] WARNING: CPU: 3 PID: 364 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 10.985051] Modules linked in: bridge stp llc 8021q vrf veth [ 10.985122] CPU: 3 UID: 0 PID: 364 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 10.985209] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.985273] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 10.985325] Code: 8f 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 51 8f 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 [ 10.985501] RSP: 0018:ffff9e8080537730 EFLAGS: 00010282 [ 10.985553] RAX: 0000000000000000 RBX: ffff9e8080537740 RCX: 00000000ffffdfff [ 10.985629] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 10.985709] RBP: ffff9e8080537248 R08: ffffffff8f956a28 R09: 00000000ffffdfff [ 10.985790] R10: ffffffff8f876a40 R11: ffffffff8f926a40 R12: dead000000000122 [ 10.985861] R13: 00000000fffb9669 R14: 0000000000000001 R15: ffff916342de4000 [ 10.985940] FS: 00007f6462b2d800(0000) GS:ffff9163eed59000(0000) knlGS:0000000000000000 [ 10.986024] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 10.986086] CR2: 00007ffee5565f30 CR3: 0000000007ec1001 CR4: 0000000000772ef0 [ 10.986164] PKRU: 55555554 [ 10.986190] Call Trace: [ 10.986234] [ 10.986262] netdev_run_todo+0x21a/0x550 [ 10.986312] rtnl_dellink+0x15b/0x350 [ 10.986359] ? virtio_fs_enqueue_req+0x352/0x570 [ 10.986416] ? netdev_run_todo+0x63/0x550 [ 10.986455] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 10.986506] rtnetlink_rcv_msg+0x358/0x400 [ 10.986542] ? get_page_from_freelist+0x15b4/0x1770 [ 10.986593] ? rtnl_calcit.isra.0+0x110/0x110 [ 10.986646] netlink_rcv_skb+0x57/0x100 [ 10.986686] netlink_unicast+0x252/0x380 [ 10.986724] ? __alloc_skb+0xdb/0x190 [ 10.986771] netlink_sendmsg+0x1be/0x3e0 [ 10.986805] ____sys_sendmsg+0x132/0x260 [ 10.986847] ? copy_msghdr_from_user+0x6c/0xa0 [ 10.986905] ___sys_sendmsg+0x87/0xd0 [ 10.986944] ? do_wp_page+0x369/0xe90 [ 10.986991] ? ___pte_offset_map+0x1b/0xd0 [ 10.987029] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 10.987080] ? fsnotify_grab_connector+0x48/0x80 [ 10.987127] ? fsnotify_destroy_marks+0x29/0x150 [ 10.987172] __sys_sendmsg+0x71/0xd0 [ 10.987207] do_syscall_64+0xa4/0xfd0 [ 10.987249] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 10.987301] RIP: 0033:0x7f6462cfb1d7 [ 10.987344] 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 [ 10.987528] RSP: 002b:00007ffcba47ab48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 10.987603] RAX: ffffffffffffffda RBX: 00007ffcba47b270 RCX: 00007f6462cfb1d7 [ 10.987681] RDX: 0000000000000000 RSI: 00007ffcba47abb0 RDI: 0000000000000005 [ 10.987757] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 10.987832] R10: 00007f6462bf7f60 R11: 0000000000000246 R12: 0000000000000002 [ 10.987910] R13: 00000000690dee38 R14: 0000000000499600 R15: 0000000000000000 [ 10.987991] [ 10.988015] ---[ end trace 0000000000000000 ]--- [ 10.988586] ip (364) used greatest stack depth: 11744 bytes left [ 13.058939] br1: port 1(veth1) entered disabled state [ 13.070465] veth1: left allmulticast mode [ 13.070524] veth1: left promiscuous mode [ 13.070582] br1: port 1(veth1) entered disabled state