[ 7.683522] GACT probability NOT on [ 7.685030] tc (296) used greatest stack depth: 11840 bytes left [ 10.537319] ------------[ cut here ]------------ [ 10.537489] refcount_t: underflow; use-after-free. [ 10.537583] WARNING: CPU: 2 PID: 800 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 10.537684] Modules linked in: act_gact cls_flower sch_ingress vrf veth [ 10.537761] CPU: 2 UID: 0 PID: 800 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 10.537878] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.537969] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 10.538043] 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 b1 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 [ 10.538212] RSP: 0018:ffffa3be00b77730 EFLAGS: 00010282 [ 10.538295] RAX: 0000000000000000 RBX: ffffa3be00b77740 RCX: 00000000ffffdfff [ 10.538385] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 10.538469] RBP: ffffa3be00b77248 R08: ffffffff96f56a28 R09: 00000000ffffdfff [ 10.538559] R10: ffffffff96e76a40 R11: ffffffff96f26a40 R12: dead000000000122 [ 10.538651] R13: 00000000fffb94c6 R14: 0000000000000001 R15: ffff8eca43c55000 [ 10.538730] FS: 00007f5453ad7800(0000) GS:ffff8ecae76d9000(0000) knlGS:0000000000000000 [ 10.538819] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 10.538946] CR2: 00007fb9f6e085f0 CR3: 0000000007990002 CR4: 0000000000772ef0 [ 10.539030] PKRU: 55555554 [ 10.539075] Call Trace: [ 10.539128] [ 10.539172] netdev_run_todo+0x21a/0x550 [ 10.539255] rtnl_dellink+0x15b/0x350 [ 10.539330] ? virtio_fs_enqueue_req+0x352/0x570 [ 10.539401] ? netdev_run_todo+0x63/0x550 [ 10.539459] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 10.539522] rtnetlink_rcv_msg+0x358/0x400 [ 10.539585] ? get_page_from_freelist+0x15b4/0x1770 [ 10.539660] ? rtnl_calcit.isra.0+0x110/0x110 [ 10.539724] netlink_rcv_skb+0x57/0x100 [ 10.539790] netlink_unicast+0x252/0x380 [ 10.539848] ? __alloc_skb+0xdb/0x190 [ 10.539911] netlink_sendmsg+0x1be/0x3e0 [ 10.539967] ____sys_sendmsg+0x132/0x260 [ 10.540040] ? copy_msghdr_from_user+0x6c/0xa0 [ 10.540104] ___sys_sendmsg+0x87/0xd0 [ 10.540158] ? do_wp_page+0x369/0xe90 [ 10.540227] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 10.540298] ? fsnotify_grab_connector+0x48/0x80 [ 10.540375] ? fsnotify_destroy_marks+0x29/0x150 [ 10.540439] __sys_sendmsg+0x71/0xd0 [ 10.540494] do_syscall_64+0xa4/0xfd0 [ 10.540550] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 10.540626] RIP: 0033:0x7f5453ca51d7 [ 10.540681] 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 [ 10.540830] RSP: 002b:00007ffd19f71bc8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 10.540931] RAX: ffffffffffffffda RBX: 00007ffd19f722f0 RCX: 00007f5453ca51d7 [ 10.541022] RDX: 0000000000000000 RSI: 00007ffd19f71c30 RDI: 0000000000000005 [ 10.541099] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 10.541175] R10: 00007f5453ba1f60 R11: 0000000000000246 R12: 0000000000000002 [ 10.541260] R13: 00000000690de8c2 R14: 0000000000499600 R15: 0000000000000000 [ 10.541357] [ 10.541402] ---[ end trace 0000000000000000 ]--- [ 10.542015] ip (800) used greatest stack depth: 11744 bytes left