[ 2.320106] ip (248) used greatest stack depth: 12296 bytes left [ 2.512535] veth0: entered allmulticast mode [ 2.512671] veth1: entered allmulticast mode [ 2.512759] veth2: entered allmulticast mode [ 2.512827] veth3: entered allmulticast mode [ 2.512907] veth4: entered allmulticast mode [ 2.512976] veth5: entered allmulticast mode [ 8.367903] GACT probability NOT on [ 8.369229] tc (371) used greatest stack depth: 11840 bytes left [ 10.382369] ------------[ cut here ]------------ [ 10.382550] refcount_t: underflow; use-after-free. [ 10.382647] WARNING: CPU: 2 PID: 636 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 10.382748] Modules linked in: act_gact cls_flower sch_ingress vrf veth [ 10.382829] CPU: 2 UID: 0 PID: 636 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 10.382935] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.383011] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 10.383080] Code: 96 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 91 96 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 [ 10.383256] RSP: 0018:ffffa7e5c0b33730 EFLAGS: 00010282 [ 10.383331] RAX: 0000000000000000 RBX: ffffa7e5c0b33740 RCX: 00000000ffffdfff [ 10.383407] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 10.383491] RBP: ffffa7e5c0b33248 R08: ffffffff96d56a28 R09: 00000000ffffdfff [ 10.383569] R10: ffffffff96c76a40 R11: ffffffff96d26a40 R12: dead000000000122 [ 10.383664] R13: 00000000fffb9430 R14: 0000000000000001 R15: ffff8c4a0515d000 [ 10.383742] FS: 00007fc45d636800(0000) GS:ffff8c4aa78d9000(0000) knlGS:0000000000000000 [ 10.383823] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 10.383891] CR2: 00000000004e73d8 CR3: 0000000007574006 CR4: 0000000000772ef0 [ 10.383969] PKRU: 55555554 [ 10.384013] Call Trace: [ 10.384065] [ 10.384111] netdev_run_todo+0x21a/0x550 [ 10.384176] rtnl_dellink+0x15b/0x350 [ 10.384239] ? virtio_fs_enqueue_req+0x352/0x570 [ 10.384305] ? netdev_run_todo+0x63/0x550 [ 10.384371] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 10.384433] rtnetlink_rcv_msg+0x358/0x400 [ 10.384496] ? get_page_from_freelist+0x15b4/0x1770 [ 10.384581] ? rtnl_calcit.isra.0+0x110/0x110 [ 10.384658] netlink_rcv_skb+0x57/0x100 [ 10.384719] netlink_unicast+0x252/0x380 [ 10.384780] ? __alloc_skb+0xdb/0x190 [ 10.384837] netlink_sendmsg+0x1be/0x3e0 [ 10.384892] ____sys_sendmsg+0x132/0x260 [ 10.384949] ? copy_msghdr_from_user+0x6c/0xa0 [ 10.385014] ___sys_sendmsg+0x87/0xd0 [ 10.385076] ? do_wp_page+0x369/0xe90 [ 10.385135] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 10.385201] ? fsnotify_grab_connector+0x48/0x80 [ 10.385265] ? fsnotify_destroy_marks+0x29/0x150 [ 10.385334] __sys_sendmsg+0x71/0xd0 [ 10.385388] do_syscall_64+0xa4/0xfd0 [ 10.385441] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 10.385508] RIP: 0033:0x7fc45d8041d7 [ 10.385565] 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 [ 10.385704] RSP: 002b:00007ffef0059a38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 10.385783] RAX: ffffffffffffffda RBX: 00007ffef005a160 RCX: 00007fc45d8041d7 [ 10.385855] RDX: 0000000000000000 RSI: 00007ffef0059aa0 RDI: 0000000000000005 [ 10.385930] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 10.386005] R10: 00007fc45d700f60 R11: 0000000000000246 R12: 0000000000000002 [ 10.386097] R13: 00000000690dee9f R14: 0000000000499600 R15: 0000000000000000 [ 10.386175] [ 10.386220] ---[ end trace 0000000000000000 ]--- [ 10.386934] ip (636) used greatest stack depth: 11744 bytes left [ 10.795049] veth0: left allmulticast mode [ 10.795110] veth1: left allmulticast mode [ 10.795145] veth2: left allmulticast mode [ 10.795181] veth3: left allmulticast mode [ 10.795221] veth4: left allmulticast mode [ 10.795259] veth5: left allmulticast mode