FYI, this happened several times with OpenVZ kernel here, though one user
reported against v2.6.24 but without calltrace:
http://marc.info/?l=linux-kernel&m=120155594432027&w=2
Anyway...
Driver is tg3.
[ 403.240511] WARNING: at net/core/dev.c:1407 skb_gso_segment()
if (WARN_ON(skb->ip_summed != CHECKSUM_PARTIAL)) {
[ 403.240653] Pid: 6114, comm: bash Tainted: G M 2.6.24-openvz #30
[ 403.240779]
[ 403.240781] Call Trace:
[ 403.240987] <IRQ> [<ffffffff8041a81b>] skb_gso_segment+0x19b/0x250
[ 403.241194] [<ffffffff8041aae9>] dev_hard_start_xmit+0x219/0x2d0
[ 403.241318] [<ffffffff8041d6c5>] dev_queue_xmit+0x2b5/0x370
[ 403.241440] [<ffffffff804404a3>] ip_queue_xmit+0x323/0x4c0
[ 403.241565] [<ffffffff802a72d9>] init_object+0x89/0xa0
[ 403.241684] [<ffffffff802aa814>] __slab_alloc+0x394/0x3f0
[ 403.241805] [<ffffffff80454ddd>] tso_fragment+0x7d/0x260
[ 403.241927] [<ffffffff80454ddd>] tso_fragment+0x7d/0x260
[ 403.242048] [<ffffffff80453226>] tcp_transmit_skb+0x526/0x950
[ 403.242170] [<ffffffff80454ec8>] tso_fragment+0x168/0x260
[ 403.242290] [<ffffffff80455105>] __tcp_push_pending_frames+0x145/0x9a0
[ 403.242415] [<ffffffff802a8b2c>] __slab_free+0x9c/0x2d0
[ 403.242533] [<ffffffff80451fd1>] tcp_rcv_established+0x481/0x880
[ 403.242657] [<ffffffff80451ff1>] tcp_rcv_established+0x4a1/0x880
[ 403.242783] [<ffffffff80459c4b>] tcp_v4_do_rcv+0x3ab/0x790
[ 403.242904] [<ffffffff80437123>] ip_route_input+0x153/0x1200
[ 403.243044] [<ffffffff8045cecd>] tcp_v4_rcv+0xa0d/0xb60
[ 403.243165] [<ffffffff8043a8cd>] ip_local_deliver_finish+0xfd/0x2c0
[ 403.243288] [<ffffffff8043a458>] ip_rcv_finish+0x128/0x4a0
[ 403.243409] [<ffffffff8041a266>] netif_receive_skb+0x2e6/0x390
[ 403.243531] [<ffffffff8041d005>] process_backlog+0x85/0xf0
[ 403.243654] [<ffffffff8041cd40>] net_rx_action+0x170/0x200
[ 403.243777] [<ffffffff802422d9>] __do_softirq+0xb9/0x160
[ 403.243898] [<ffffffff8020d17c>] call_softirq+0x1c/0x30
[ 403.244017] [<ffffffff8020f645>] do_softirq+0x55/0xb0
[ 403.244134] [<ffffffff80242215>] irq_exit+0xe5/0xf0
[ 403.244252] [<ffffffff8020f720>] do_IRQ+0x80/0x100
[ 403.244368] [<ffffffff8020c476>] ret_from_intr+0x0/0xf
[ 403.244489] <EOI>