[ 2.173687] ip (260) used greatest stack depth: 12504 bytes left [ 2.187338] ip (261) used greatest stack depth: 12472 bytes left [ 2.200614] fab-br0: port 1(fbond) entered blocking state [ 2.200714] fab-br0: port 1(fbond) entered disabled state [ 2.200804] fbond: entered allmulticast mode [ 2.200978] fbond: entered promiscuous mode [ 2.220050] veth1-bond: entered promiscuous mode [ 2.220117] veth1-bond: entered allmulticast mode [ 2.220200] fbond: (slave veth1-bond): Enslaving as a backup interface with a down link [ 2.233255] veth2-bond: entered promiscuous mode [ 2.233316] veth2-bond: entered allmulticast mode [ 2.233370] fbond: (slave veth2-bond): Enslaving as a backup interface with a down link [ 2.251607] fbond: Warning: No 802.3ad response from the link partner for any adapters in the bond [ 2.270700] fab-br0: port 1(fbond) entered blocking state [ 2.270777] fab-br0: port 1(fbond) entered forwarding state [ 2.356628] fbond: Warning: No 802.3ad response from the link partner for any adapters in the bond [ 2.356806] fbond: (slave veth1-bond): link status definitely up, 10000 Mbps full duplex [ 2.356931] fbond: (slave veth2-bond): link status definitely up, 10000 Mbps full duplex [ 2.357000] fbond: active interface up! [ 3.588109] fbond: left allmulticast mode [ 3.588164] veth1-bond: left allmulticast mode [ 3.588203] veth2-bond: left allmulticast mode [ 3.588248] fbond: left promiscuous mode [ 3.588276] veth1-bond: left promiscuous mode [ 3.588322] veth2-bond: left promiscuous mode [ 3.588380] fab-br0: port 1(fbond) entered disabled state [ 3.605633] ------------[ cut here ]------------ [ 3.605755] refcount_t: underflow; use-after-free. [ 3.605835] WARNING: CPU: 0 PID: 338 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 3.605908] Modules linked in: [ 3.605943] CPU: 0 UID: 0 PID: 338 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 3.606048] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 3.606117] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 3.606169] Code: ac e8 88 98 ba ff 90 0f 0b 90 90 c3 80 3d 69 b4 eb 00 00 75 89 c6 05 60 b4 eb 00 01 90 48 c7 c7 98 6e 94 ac e8 65 98 ba ff 90 <0f> 0b 90 90 c3 80 3d 44 b4 eb 00 00 0f 85 62 ff ff ff c6 05 37 b4 [ 3.606323] RSP: 0018:ffffab12c0757730 EFLAGS: 00010282 [ 3.606361] RAX: 0000000000000000 RBX: ffffab12c0757740 RCX: 00000000ffffdfff [ 3.606415] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 3.606469] RBP: ffffab12c0757258 R08: ffffffffacd56a28 R09: 00000000ffffdfff [ 3.606522] R10: ffffffffacc76a40 R11: ffffffffacd26a40 R12: dead000000000122 [ 3.606575] R13: 00000000fffb79aa R14: 0000000000000001 R15: ffff909f81f73000 [ 3.606636] FS: 00007fc52a20f800(0000) GS:ffff90a0117b7000(0000) knlGS:0000000000000000 [ 3.606695] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3.606741] CR2: 00000000004e5f78 CR3: 00000000062be006 CR4: 0000000000772ef0 [ 3.606832] PKRU: 55555554 [ 3.606856] Call Trace: [ 3.606886] [ 3.606912] netdev_run_todo+0x21a/0x550 [ 3.606964] rtnl_dellink+0x15b/0x350 [ 3.607012] ? virtio_fs_enqueue_req+0x352/0x570 [ 3.607072] ? netdev_run_todo+0x63/0x550 [ 3.607105] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 3.607146] rtnetlink_rcv_msg+0x358/0x400 [ 3.607191] ? get_page_from_freelist+0x15b4/0x1770 [ 3.607251] ? rtnl_calcit.isra.0+0x110/0x110 [ 3.607309] netlink_rcv_skb+0x57/0x100 [ 3.607357] netlink_unicast+0x252/0x380 [ 3.607398] ? __alloc_skb+0xdb/0x190 [ 3.607442] netlink_sendmsg+0x1be/0x3e0 [ 3.607482] ____sys_sendmsg+0x132/0x260 [ 3.607528] ? copy_msghdr_from_user+0x6c/0xa0 [ 3.607576] ___sys_sendmsg+0x87/0xd0 [ 3.607632] ? do_wp_page+0x369/0xe90 [ 3.607682] ? ___pte_offset_map+0x1b/0xd0 [ 3.607730] ? __handle_mm_fault+0x4e6/0xe50 [ 3.607790] ? fsnotify_grab_connector+0x48/0x80 [ 3.607832] ? fsnotify_destroy_marks+0x29/0x150 [ 3.607882] __sys_sendmsg+0x71/0xd0 [ 3.607914] do_syscall_64+0xa4/0xfd0 [ 3.607949] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 3.607991] RIP: 0033:0x7fc52a3dd1d7 [ 3.608024] 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 [ 3.608139] RSP: 002b:00007ffee6fb76f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 3.608203] RAX: ffffffffffffffda RBX: 00007ffee6fb7e20 RCX: 00007fc52a3dd1d7 [ 3.608284] RDX: 0000000000000000 RSI: 00007ffee6fb7760 RDI: 0000000000000005 [ 3.608359] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 3.608442] R10: 00007fc52a2d9f60 R11: 0000000000000246 R12: 0000000000000001 [ 3.608500] R13: 00000000690def01 R14: 0000000000499600 R15: 0000000000000000 [ 3.608556] [ 3.608578] ---[ end trace 0000000000000000 ]--- [ 3.609235] ip (338) used greatest stack depth: 11744 bytes left [ 3.620490] fbond (unregistering): (slave veth1-bond): Removing an active aggregator [ 3.620608] fbond (unregistering): (slave veth1-bond): Releasing backup interface [ 3.628751] fbond (unregistering): (slave veth2-bond): Removing an active aggregator [ 3.628890] fbond (unregistering): (slave veth2-bond): Releasing backup interface [ 3.637703] fbond (unregistering): Released all slaves