[ 2.273787] ip (260) used greatest stack depth: 12408 bytes left [ 2.287942] ip (261) used greatest stack depth: 12344 bytes left [ 2.302096] fab-br0: port 1(fbond) entered blocking state [ 2.302214] fab-br0: port 1(fbond) entered disabled state [ 2.302307] fbond: entered allmulticast mode [ 2.302439] fbond: entered promiscuous mode [ 2.314774] veth1-bond: entered promiscuous mode [ 2.314908] veth1-bond: entered allmulticast mode [ 2.315007] fbond: (slave veth1-bond): Enslaving as a backup interface with a down link [ 2.327384] veth2-bond: entered promiscuous mode [ 2.327456] veth2-bond: entered allmulticast mode [ 2.327530] fbond: (slave veth2-bond): Enslaving as a backup interface with a down link [ 2.353905] fbond: Warning: No 802.3ad response from the link partner for any adapters in the bond [ 2.362275] fab-br0: port 1(fbond) entered blocking state [ 2.362342] fab-br0: port 1(fbond) entered forwarding state [ 2.449937] fbond: (slave veth1-bond): link status definitely up, 10000 Mbps full duplex [ 2.450063] fbond: (slave veth2-bond): link status definitely up, 10000 Mbps full duplex [ 2.450147] fbond: active interface up! [ 3.550203] fbond: left allmulticast mode [ 3.550275] veth1-bond: left allmulticast mode [ 3.550338] veth2-bond: left allmulticast mode [ 3.550396] fbond: left promiscuous mode [ 3.550432] veth1-bond: left promiscuous mode [ 3.550493] veth2-bond: left promiscuous mode [ 3.550566] fab-br0: port 1(fbond) entered disabled state [ 3.568939] ------------[ cut here ]------------ [ 3.569081] refcount_t: underflow; use-after-free. [ 3.569154] WARNING: CPU: 0 PID: 332 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110 [ 3.569245] Modules linked in: [ 3.569283] CPU: 0 UID: 0 PID: 332 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) [ 3.569379] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 3.569443] RIP: 0010:refcount_warn_saturate+0xbc/0x110 [ 3.569493] Code: a4 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 b4 a4 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 [ 3.569665] RSP: 0018:ffffb083407bf730 EFLAGS: 00010282 [ 3.569717] RAX: 0000000000000000 RBX: ffffb083407bf740 RCX: 00000000ffffdfff [ 3.569793] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001 [ 3.569873] RBP: ffffb083407bf258 R08: ffffffffa4f56a28 R09: 00000000ffffdfff [ 3.569952] R10: ffffffffa4e76a40 R11: ffffffffa4f26a40 R12: dead000000000122 [ 3.570034] R13: 00000000fffb798f R14: 0000000000000001 R15: ffff8f29c2c2d000 [ 3.570114] FS: 00007fbc4d943800(0000) GS:ffff8f2a595b7000(0000) knlGS:0000000000000000 [ 3.570199] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3.570260] CR2: 00007f45bb9e7eb0 CR3: 0000000005323005 CR4: 0000000000772ef0 [ 3.570337] PKRU: 55555554 [ 3.570361] Call Trace: [ 3.570389] [ 3.570417] netdev_run_todo+0x21a/0x550 [ 3.570463] rtnl_dellink+0x15b/0x350 [ 3.570509] ? virtio_fs_enqueue_req+0x352/0x570 [ 3.570571] ? netdev_run_todo+0x63/0x550 [ 3.570609] ? rtnl_bridge_getlink+0x1a0/0x1a0 [ 3.570661] rtnetlink_rcv_msg+0x358/0x400 [ 3.570699] ? get_page_from_freelist+0x15b4/0x1770 [ 3.570758] ? rtnl_calcit.isra.0+0x110/0x110 [ 3.570806] netlink_rcv_skb+0x57/0x100 [ 3.570853] netlink_unicast+0x252/0x380 [ 3.570897] ? __alloc_skb+0xdb/0x190 [ 3.570939] netlink_sendmsg+0x1be/0x3e0 [ 3.570979] ____sys_sendmsg+0x132/0x260 [ 3.571026] ? copy_msghdr_from_user+0x6c/0xa0 [ 3.571072] ___sys_sendmsg+0x87/0xd0 [ 3.571111] ? do_wp_page+0x369/0xe90 [ 3.571156] ? ___pte_offset_map+0x1b/0xd0 [ 3.571195] ? __handle_mm_fault+0x4e6/0xe50 [ 3.571246] ? fsnotify_grab_connector+0x48/0x80 [ 3.571297] ? fsnotify_destroy_marks+0x29/0x150 [ 3.571350] __sys_sendmsg+0x71/0xd0 [ 3.571389] do_syscall_64+0xa4/0xfd0 [ 3.571434] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 3.571485] RIP: 0033:0x7fbc4db111d7 [ 3.571523] 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 [ 3.571701] RSP: 002b:00007ffdde60b2c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 3.571779] RAX: ffffffffffffffda RBX: 00007ffdde60b9f0 RCX: 00007fbc4db111d7 [ 3.571856] RDX: 0000000000000000 RSI: 00007ffdde60b330 RDI: 0000000000000005 [ 3.571933] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 3.572007] R10: 00007fbc4da0df60 R11: 0000000000000246 R12: 0000000000000001 [ 3.572084] R13: 00000000690de73b R14: 0000000000499600 R15: 0000000000000000 [ 3.572164] [ 3.572189] ---[ end trace 0000000000000000 ]--- [ 3.572849] ip (332) used greatest stack depth: 11744 bytes left [ 3.584532] fbond (unregistering): (slave veth1-bond): Removing an active aggregator [ 3.584672] fbond (unregistering): (slave veth1-bond): Releasing backup interface [ 3.589055] fbond (unregistering): (slave veth2-bond): Removing an active aggregator [ 3.589218] fbond (unregistering): (slave veth2-bond): Releasing backup interface [ 3.592990] fbond (unregistering): Released all slaves