[ 2.008402] ip (248) used greatest stack depth: 12408 bytes left [ 7.949727] ------------[ cut here ]------------ [ 7.949803] refcount_t: underflow; use-after-free. [ 7.949870] WARNING: CPU: 0 PID: 368 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 7.949968] Modules linked in: sch_ingress vrf veth [ 7.950032] CPU: 0 UID: 0 PID: 368 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 7.950140] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 7.950216] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 7.950260] Code: bf 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 11 bf 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 [ 7.950395] RSP: 0018:ffff9c53404f7730 EFLAGS: 00010282 [ 7.950429] RAX: 0000000000000000 RBX: ffff9c53404f7740 RCX: 00000000ffffdfff [ 7.950491] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 7.950541] RBP: ffff9c53404f7248 R08: ffffffffbf556a28 R09: 00000000ffffdfff [ 7.950597] R10: ffffffffbf476a40 R11: ffffffffbf526a40 R12: dead000000000122 [ 7.950648] R13: 00000000fffb8a91 R14: 0000000000000001 R15: ffff8b35041d5000 [ 7.950705] FS: 00007fc7a1b5c800(0000) GS:ffff8b357efd9000(0000) knlGS:0000000000000000 [ 7.950763] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 7.950817] CR2: 00000000004e73d8 CR3: 0000000001da2003 CR4: 0000000000772ef0 [ 7.950873] PKRU: 55555554 [ 7.950894] Call Trace: [ 7.950913] [ 7.950935] netdev_run_todo+0x21a/0x550 [ 7.950973] rtnl_dellink+0x15b/0x350 [ 7.951009] ? virtio_fs_enqueue_req+0x352/0x570 [ 7.951051] ? netdev_run_todo+0x63/0x550 [ 7.951082] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 7.951122] rtnetlink_rcv_msg+0x358/0x400 [ 7.951154] ? get_page_from_freelist+0x15b4/0x1770 [ 7.951202] ? rtnl_calcit.isra.0+0x110/0x110 [ 7.951242] netlink_rcv_skb+0x57/0x100 [ 7.951274] netlink_unicast+0x252/0x380 [ 7.951305] ? __alloc_skb+0xdb/0x190 [ 7.951336] netlink_sendmsg+0x1be/0x3e0 [ 7.951367] ____sys_sendmsg+0x132/0x260 [ 7.951398] ? copy_msghdr_from_user+0x6c/0xa0 [ 7.951438] ___sys_sendmsg+0x87/0xd0 [ 7.951477] ? do_wp_page+0x369/0xe90 [ 7.951506] ? ___pte_offset_map+0x1b/0xd0 [ 7.951540] ? nfulnl_rcv_nl_event+0x36/0xa0 [ 7.951582] ? fsnotify_grab_connector+0x48/0x80 [ 7.951622] ? fsnotify_destroy_marks+0x29/0x150 [ 7.951662] __sys_sendmsg+0x71/0xd0 [ 7.951689] do_syscall_64+0xa4/0xfd0 [ 7.951725] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 7.951767] RIP: 0033:0x7fc7a1d2a1d7 [ 7.951799] 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 [ 7.951921] RSP: 002b:00007ffd7b247398 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 7.951976] RAX: ffffffffffffffda RBX: 00007ffd7b247ac0 RCX: 00007fc7a1d2a1d7 [ 7.952027] RDX: 0000000000000000 RSI: 00007ffd7b247400 RDI: 0000000000000005 [ 7.952077] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 7.952129] R10: 00007fc7a1c26f60 R11: 0000000000000246 R12: 0000000000000002 [ 7.952187] R13: 00000000690deef5 R14: 0000000000499600 R15: 0000000000000000 [ 7.952239] [ 7.952255] ---[ end trace 0000000000000000 ]--- [ 7.952734] ip (368) used greatest stack depth: 11744 bytes left