[ 2.033887] ip (246) used greatest stack depth: 12328 bytes left [ 2.130486] ip (262) used greatest stack depth: 12136 bytes left [ 2.711946] gre: GRE over IPv4 demultiplexer driver [ 2.716838] ip6_gre: GRE over IPv6 tunneling driver [ 2.733323] ip6_tunnel: g1 xmit: Local address not yet configured! [ 2.749545] ip6_tunnel: g1 xmit: Local address not yet configured! [ 2.952906] 8021q: 802.1Q VLAN Support v1.8 [ 3.370062] GACT probability NOT on [ 3.539451] ip6_tunnel: g2 xmit: Local address not yet configured! [ 3.550226] ip6_tunnel: g2 xmit: Local address not yet configured! [ 176.680786] ------------[ cut here ]------------ [ 176.681062] refcount_t: underflow; use-after-free. [ 176.681192] WARNING: CPU: 2 PID: 17274 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 176.681341] Modules linked in: act_gact cls_flower sch_ingress 8021q ip6_gre ip6_tunnel tunnel6 gre vrf veth [ 176.681497] CPU: 2 UID: 0 PID: 17274 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 176.681609] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 176.681704] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 176.681793] Code: 87 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 87 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 [ 176.681983] RSP: 0018:ffff9e1046f97730 EFLAGS: 00010282 [ 176.682053] RAX: 0000000000000000 RBX: ffff9e1046f97740 RCX: 00000000ffffdfff [ 176.682149] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 176.682244] RBP: ffff9e1046f97248 R08: ffffffff87d56a28 R09: 00000000ffffdfff [ 176.682338] R10: ffffffff87c76a40 R11: ffffffff87d26a40 R12: dead000000000122 [ 176.682436] R13: 00000000fffe1dcb R14: 0000000000000001 R15: ffff8a31066a2000 [ 176.682533] FS: 00007f33a7016800(0000) GS:ffff8a31b68d9000(0000) knlGS:0000000000000000 [ 176.682630] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 176.682714] CR2: 00000000004e7450 CR3: 000000000ae70004 CR4: 0000000000772ef0 [ 176.682815] PKRU: 55555554 [ 176.682867] Call Trace: [ 176.682928] [ 176.682982] netdev_run_todo+0x21a/0x550 [ 176.683056] rtnl_dellink+0x15b/0x350 [ 176.683127] ? virtio_fs_enqueue_req+0x352/0x570 [ 176.683205] ? netdev_run_todo+0x63/0x550 [ 176.683267] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 176.683342] rtnetlink_rcv_msg+0x358/0x400 [ 176.683405] ? get_page_from_freelist+0x15b4/0x1770 [ 176.683487] ? rtnl_calcit.isra.0+0x110/0x110 [ 176.683560] netlink_rcv_skb+0x57/0x100 [ 176.683632] netlink_unicast+0x252/0x380 [ 176.683695] ? __alloc_skb+0xdb/0x190 [ 176.683771] netlink_sendmsg+0x1be/0x3e0 [ 176.683842] ____sys_sendmsg+0x132/0x260 [ 176.683915] ? copy_msghdr_from_user+0x6c/0xa0 [ 176.683989] ___sys_sendmsg+0x87/0xd0 [ 176.684066] ? do_wp_page+0x369/0xe90 [ 176.684139] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 176.684221] ? fsnotify_grab_connector+0x48/0x80 [ 176.684299] ? fsnotify_destroy_marks+0x29/0x150 [ 176.684374] __sys_sendmsg+0x71/0xd0 [ 176.684441] do_syscall_64+0xa4/0xfd0 [ 176.684514] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 176.684596] RIP: 0033:0x7f33a71e41d7 [ 176.684663] 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 [ 176.684858] RSP: 002b:00007ffe46deeaf8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 176.684955] RAX: ffffffffffffffda RBX: 00007ffe46def220 RCX: 00007f33a71e41d7 [ 176.685050] RDX: 0000000000000000 RSI: 00007ffe46deeb60 RDI: 0000000000000005 [ 176.685144] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 176.685239] R10: 00007f33a70e0f60 R11: 0000000000000246 R12: 0000000000000002 [ 176.685336] R13: 00000000690de4e4 R14: 0000000000499600 R15: 0000000000000000 [ 176.685436] [ 176.685484] ---[ end trace 0000000000000000 ]--- [ 176.686120] ip (17274) used greatest stack depth: 11744 bytes left