[ 2.309931] veth0: entered allmulticast mode [ 2.310090] veth1: entered allmulticast mode [ 2.310188] veth2: entered allmulticast mode [ 2.310256] veth3: entered allmulticast mode [ 9.817628] GACT probability NOT on [ 9.818698] tc (356) used greatest stack depth: 11840 bytes left [ 10.829758] ------------[ cut here ]------------ [ 10.829926] refcount_t: underflow; use-after-free. [ 10.830016] WARNING: CPU: 2 PID: 507 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 10.830119] Modules linked in: act_gact cls_flower sch_ingress vrf veth [ 10.830211] CPU: 2 UID: 0 PID: 507 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 10.830323] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.830410] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 10.830483] Code: 95 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 95 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 [ 10.830671] RSP: 0018:ffffa34cc09c7730 EFLAGS: 00010282 [ 10.830751] RAX: 0000000000000000 RBX: ffffa34cc09c7740 RCX: 00000000ffffdfff [ 10.830847] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 10.830946] RBP: ffffa34cc09c7248 R08: ffffffff95556a28 R09: 00000000ffffdfff [ 10.831042] R10: ffffffff95476a40 R11: ffffffff95526a40 R12: dead000000000122 [ 10.831139] R13: 00000000fffb95eb R14: 0000000000000001 R15: ffff8891c112d000 [ 10.831238] FS: 00007f43a2e77800(0000) GS:ffff8892690d9000(0000) knlGS:0000000000000000 [ 10.831339] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 10.831425] CR2: 00007f18df140270 CR3: 00000000075b3006 CR4: 0000000000772ef0 [ 10.831529] PKRU: 55555554 [ 10.831578] Call Trace: [ 10.831627] [ 10.831675] netdev_run_todo+0x21a/0x550 [ 10.831753] rtnl_dellink+0x15b/0x350 [ 10.831820] ? virtio_fs_enqueue_req+0x352/0x570 [ 10.831894] ? netdev_run_todo+0x63/0x550 [ 10.831958] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 10.832031] rtnetlink_rcv_msg+0x358/0x400 [ 10.832093] ? get_page_from_freelist+0x15b4/0x1770 [ 10.832170] ? rtnl_calcit.isra.0+0x110/0x110 [ 10.832243] netlink_rcv_skb+0x57/0x100 [ 10.832310] netlink_unicast+0x252/0x380 [ 10.832371] ? __alloc_skb+0xdb/0x190 [ 10.832434] netlink_sendmsg+0x1be/0x3e0 [ 10.832495] ____sys_sendmsg+0x132/0x260 [ 10.832558] ? copy_msghdr_from_user+0x6c/0xa0 [ 10.832635] ___sys_sendmsg+0x87/0xd0 [ 10.832699] ? do_wp_page+0x369/0xe90 [ 10.832767] ? ___pte_offset_map+0x1b/0xd0 [ 10.832838] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 10.832917] ? fsnotify_grab_connector+0x48/0x80 [ 10.832992] ? fsnotify_destroy_marks+0x29/0x150 [ 10.833064] __sys_sendmsg+0x71/0xd0 [ 10.833127] do_syscall_64+0xa4/0xfd0 [ 10.833193] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 10.833268] RIP: 0033:0x7f43a30451d7 [ 10.833331] 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 [ 10.833520] RSP: 002b:00007ffc76841738 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 10.833616] RAX: ffffffffffffffda RBX: 00007ffc76841e60 RCX: 00007f43a30451d7 [ 10.833716] RDX: 0000000000000000 RSI: 00007ffc768417a0 RDI: 0000000000000005 [ 10.833812] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 10.833907] R10: 00007f43a2f41f60 R11: 0000000000000246 R12: 0000000000000002 [ 10.834002] R13: 00000000690deea3 R14: 0000000000499600 R15: 0000000000000000 [ 10.834098] [ 10.834146] ---[ end trace 0000000000000000 ]--- [ 10.834724] ip (507) used greatest stack depth: 11744 bytes left [ 11.022296] veth0: left allmulticast mode [ 11.022371] veth1: left allmulticast mode [ 11.022426] veth2: left allmulticast mode [ 11.022471] veth3: left allmulticast mode