[ 2.128136] ip (249) used greatest stack depth: 12584 bytes left [ 7.505464] GACT probability NOT on [ 7.506777] tc (292) used greatest stack depth: 11840 bytes left [ 8.630408] ------------[ cut here ]------------ [ 8.630530] refcount_t: underflow; use-after-free. [ 8.630588] WARNING: CPU: 3 PID: 530 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 8.630663] Modules linked in: act_gact cls_flower sch_ingress vrf veth [ 8.630726] CPU: 3 UID: 0 PID: 530 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 8.630797] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 8.630845] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 8.630888] Code: 8a 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 d1 8a 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 [ 8.631029] RSP: 0018:ffffaf3480a57730 EFLAGS: 00010282 [ 8.631069] RAX: 0000000000000000 RBX: ffffaf3480a57740 RCX: 00000000ffffdfff [ 8.631128] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 8.631183] RBP: ffffaf3480a57248 R08: ffffffff8b156a28 R09: 00000000ffffdfff [ 8.631237] R10: ffffffff8b076a40 R11: ffffffff8b126a40 R12: dead000000000122 [ 8.631293] R13: 00000000fffb8d56 R14: 0000000000000001 R15: ffff8bbac6028000 [ 8.631348] FS: 00007f5507bbc800(0000) GS:ffff8bbb73559000(0000) knlGS:0000000000000000 [ 8.631428] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 8.631476] CR2: 0000560c55e1f750 CR3: 000000000619c004 CR4: 0000000000772ef0 [ 8.631531] PKRU: 55555554 [ 8.631551] Call Trace: [ 8.631580] [ 8.631603] netdev_run_todo+0x21a/0x550 [ 8.631645] rtnl_dellink+0x15b/0x350 [ 8.631702] ? virtio_fs_enqueue_req+0x352/0x570 [ 8.631746] ? netdev_run_todo+0x63/0x550 [ 8.631781] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 8.631829] rtnetlink_rcv_msg+0x358/0x400 [ 8.631862] ? get_page_from_freelist+0x15b4/0x1770 [ 8.631906] ? rtnl_calcit.isra.0+0x110/0x110 [ 8.631949] netlink_rcv_skb+0x57/0x100 [ 8.631996] netlink_unicast+0x252/0x380 [ 8.632028] ? __alloc_skb+0xdb/0x190 [ 8.632063] netlink_sendmsg+0x1be/0x3e0 [ 8.632095] ____sys_sendmsg+0x132/0x260 [ 8.632132] ? copy_msghdr_from_user+0x6c/0xa0 [ 8.632173] ___sys_sendmsg+0x87/0xd0 [ 8.632204] ? do_wp_page+0x369/0xe90 [ 8.632240] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 8.632285] ? fsnotify_grab_connector+0x48/0x80 [ 8.632329] ? fsnotify_destroy_marks+0x29/0x150 [ 8.632381] __sys_sendmsg+0x71/0xd0 [ 8.632414] do_syscall_64+0xa4/0xfd0 [ 8.632450] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 8.632493] RIP: 0033:0x7f5507d8a1d7 [ 8.632527] 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 [ 8.632646] RSP: 002b:00007ffc1ea04b38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 8.632699] RAX: ffffffffffffffda RBX: 00007ffc1ea05260 RCX: 00007f5507d8a1d7 [ 8.632753] RDX: 0000000000000000 RSI: 00007ffc1ea04ba0 RDI: 0000000000000005 [ 8.632813] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 8.632867] R10: 00007f5507c86f60 R11: 0000000000000246 R12: 0000000000000002 [ 8.632920] R13: 00000000690de8fb R14: 0000000000499600 R15: 0000000000000000 [ 8.632979] [ 8.633009] ---[ end trace 0000000000000000 ]--- [ 8.633727] ip (530) used greatest stack depth: 11744 bytes left