[ 2.205764] ip (247) used greatest stack depth: 12344 bytes left [ 2.987713] 8021q: 802.1Q VLAN Support v1.8 [ 3.039024] gre: GRE over IPv4 demultiplexer driver [ 3.044275] ip6_gre: GRE over IPv6 tunneling driver [ 8.668358] GACT probability NOT on [ 8.669822] tc (403) used greatest stack depth: 11840 bytes left [ 11.536462] ------------[ cut here ]------------ [ 11.536607] refcount_t: underflow; use-after-free. [ 11.536695] WARNING: CPU: 2 PID: 622 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 11.536794] Modules linked in: act_gact cls_flower sch_ingress ip6_gre ip6_tunnel tunnel6 gre 8021q vrf veth [ 11.536919] CPU: 2 UID: 0 PID: 622 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 11.537022] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.537101] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 11.537172] Code: 9d 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 71 9d 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 [ 11.537347] RSP: 0018:ffffb65ec0c97730 EFLAGS: 00010282 [ 11.537425] RAX: 0000000000000000 RBX: ffffb65ec0c97740 RCX: 00000000ffffdfff [ 11.537512] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 11.537608] RBP: ffffb65ec0c97248 R08: ffffffff9db56a28 R09: 00000000ffffdfff [ 11.537695] R10: ffffffff9da76a40 R11: ffffffff9db26a40 R12: dead000000000122 [ 11.537787] R13: 00000000fffb98a9 R14: 0000000000000001 R15: ffff91ab05319000 [ 11.537882] FS: 00007f6e41990800(0000) GS:ffff91aba0ad9000(0000) knlGS:0000000000000000 [ 11.537975] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 11.538054] CR2: 00000000004e7408 CR3: 0000000007b07001 CR4: 0000000000772ef0 [ 11.538149] PKRU: 55555554 [ 11.538194] Call Trace: [ 11.538241] [ 11.538288] netdev_run_todo+0x21a/0x550 [ 11.538354] rtnl_dellink+0x15b/0x350 [ 11.538426] ? virtio_fs_enqueue_req+0x352/0x570 [ 11.538488] ? netdev_run_todo+0x63/0x550 [ 11.538547] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 11.538621] rtnetlink_rcv_msg+0x358/0x400 [ 11.538679] ? get_page_from_freelist+0x15b4/0x1770 [ 11.538751] ? rtnl_calcit.isra.0+0x110/0x110 [ 11.538822] netlink_rcv_skb+0x57/0x100 [ 11.538884] netlink_unicast+0x252/0x380 [ 11.538945] ? __alloc_skb+0xdb/0x190 [ 11.539004] netlink_sendmsg+0x1be/0x3e0 [ 11.539065] ____sys_sendmsg+0x132/0x260 [ 11.539126] ? copy_msghdr_from_user+0x6c/0xa0 [ 11.539198] ___sys_sendmsg+0x87/0xd0 [ 11.539257] ? do_wp_page+0x369/0xe90 [ 11.539319] ? ___pte_offset_map+0x1b/0xd0 [ 11.539384] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 11.539467] ? fsnotify_grab_connector+0x48/0x80 [ 11.539539] ? fsnotify_destroy_marks+0x29/0x150 [ 11.539614] __sys_sendmsg+0x71/0xd0 [ 11.539674] do_syscall_64+0xa4/0xfd0 [ 11.539737] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 11.539808] RIP: 0033:0x7f6e41b5e1d7 [ 11.539868] 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 [ 11.540047] RSP: 002b:00007ffee04f0408 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 11.540140] RAX: ffffffffffffffda RBX: 00007ffee04f0b30 RCX: 00007f6e41b5e1d7 [ 11.540231] RDX: 0000000000000000 RSI: 00007ffee04f0470 RDI: 0000000000000005 [ 11.540320] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 11.540417] R10: 00007f6e41a5af60 R11: 0000000000000246 R12: 0000000000000002 [ 11.540503] R13: 00000000690de86b R14: 0000000000499600 R15: 0000000000000000 [ 11.540600] [ 11.540645] ---[ end trace 0000000000000000 ]--- [ 11.541286] ip (622) used greatest stack depth: 11744 bytes left