thanks bryan, i don't have vlans inside guest.
as you suggested i disabled nic tso
ifconfig vtnet0 -tso
and
sysctl net.inet.tcp.tso=0 and
so far, so good!
everything is ok now.
once again, thanks a lot.
On 11/03/2012 09:40 PM, Bryan Venteicher wrote:
Hi,
----- Original Message -----
From: "Bane Ivosev"<[email protected]>
To: [email protected]
Sent: Saturday, November 3, 2012 2:12:25 PM
Subject: kvm vlan virtio problem
hi, i have several kvm ubuntu 12.04 and centos 6 hosts with standard
bridged network setup. same problem on each server with freebsd 9
amd64
guest and virtio nic: soon after guest start host syslog is filling
with
this message at very high rate. guest is working without any problem.
with e1000 guest driver eveything is ok.
does enyone have/had same problem?
thanks.
I have a vague recollection of looking at something similar last year...
Do you have VLAN configured in the guest as well? What is the ifconfig
output? Does disabling TSO on the vtnetX device make these messages go
away?
Bryan
kernel: [2337728.094141] ------------[ cut here ]------------
kernel: [2337728.094144] WARNING: at
/build/buildd/linux-3.2.0/net/core/dev.c:1955
skb_gso_segment+0x341/0x3b0()
kernel: [2337728.094146] Hardware name: System x3550 M3 -[7944K3G]-
kernel: [2337728.094148] 802.1Q VLAN Support: caps=(0x30195833,
0x0)
len=3196 data_len=0 ip_summed=0
kernel: [2337728.094149] Modules linked in: dm_snapshot
ip6table_filter ip6_tables ebtable_nat ebtables ipt_MASQUERADE
iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state
nf_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle xt_tcpudp
iptable_filter ip_tables x_tables kvm_intel kvm dm_crypt nfsd nfs
lockd
fscache auth_rpcgss nfs_acl sunrpc nls_iso8859_1 nls_cp437 vfat fat
8021q garp bridge stp serio_raw cdc_ether usbnet vhost_net macvtap
i7core_edac macvlan shpchp ioatdma edac_core dca tpm_tis lp parport
mac_hid btrfs zlib_deflate libcrc32c usbhid hid megaraid_sas bnx2
kernel: [2337728.094177] Pid: 8685, comm: vhost-8683 Tainted: G
W 3.2.0-31-generic #50-Ubuntu
kernel: [2337728.094179] Call Trace:
kernel: [2337728.094180]<IRQ> [<ffffffff81066d7f>]
warn_slowpath_common+0x7f/0xc0
kernel: [2337728.094185] [<ffffffff81066e76>]
warn_slowpath_fmt+0x46/0x50
kernel: [2337728.094188] [<ffffffff8153f581>]
skb_gso_segment+0x341/0x3b0
kernel: [2337728.094191] [<ffffffff81542ee1>]
dev_hard_start_xmit+0xc1/0x540
kernel: [2337728.094196] [<ffffffffa01c0150>] ? br_flood+0xc0/0xc0
[bridge]
kernel: [2337728.094199] [<ffffffff8154360a>]
dev_queue_xmit+0x2aa/0x420
kernel: [2337728.094203] [<ffffffffa01c01e2>]
br_dev_queue_push_xmit+0x92/0xd0 [bridge]
kernel: [2337728.094208] [<ffffffffa01c0278>]
br_forward_finish+0x58/0x60 [bridge]
kernel: [2337728.094212] [<ffffffffa01c042b>]
__br_forward+0xab/0xd0
[bridge]
kernel: [2337728.094217] [<ffffffffa01c04ed>] br_forward+0x5d/0x70
[bridge]
kernel: [2337728.094221] [<ffffffffa01c11c2>]
br_handle_frame_finish+0x182/0x2a0 [bridge]
kernel: [2337728.094226] [<ffffffffa01c14a8>]
br_handle_frame+0x1c8/0x270 [bridge]
kernel: [2337728.094231] [<ffffffffa01c12e0>] ?
br_handle_frame_finish+0x2a0/0x2a0 [bridge]
kernel: [2337728.094234] [<ffffffff81540892>]
__netif_receive_skb+0x1e2/0x520
kernel: [2337728.094237] [<ffffffff81540ff1>]
process_backlog+0xb1/0x190
kernel: [2337728.094240] [<ffffffff815422e4>]
net_rx_action+0x134/0x290
kernel: [2337728.094242] [<ffffffff8165a4fe>] ?
_raw_spin_lock+0xe/0x20
kernel: [2337728.094245] [<ffffffff8106e528>]
__do_softirq+0xa8/0x210
kernel: [2337728.094248] [<ffffffff81664d6c>]
call_softirq+0x1c/0x30
kernel: [2337728.094249]<EOI> [<ffffffff81015305>]
do_softirq+0x65/0xa0
kernel: [2337728.094254] [<ffffffff815427c8>]
netif_rx_ni+0x28/0x30
kernel: [2337728.094258] [<ffffffff81478ec6>]
tun_get_user+0x306/0x4a0
kernel: [2337728.094261] [<ffffffff81479085>]
tun_sendmsg+0x25/0x30
kernel: [2337728.094265] [<ffffffffa01b09b6>]
handle_tx+0x296/0x530
[vhost_net]
kernel: [2337728.094269] [<ffffffffa01b0c85>]
handle_tx_kick+0x15/0x20 [vhost_net]
kernel: [2337728.094273] [<ffffffffa01ade3d>]
vhost_worker+0xdd/0x170
[vhost_net]
kernel: [2337728.094276] [<ffffffffa01add60>] ?
vhost_set_memory+0x130/0x130 [vhost_net]
kernel: [2337728.094279] [<ffffffff8108a03c>] kthread+0x8c/0xa0
kernel: [2337728.094282] [<ffffffff81664c74>]
kernel_thread_helper+0x4/0x10
kernel: [2337728.094285] [<ffffffff81089fb0>] ?
flush_kthread_worker+0xa0/0xa0
kernel: [2337728.094287] [<ffffffff81664c70>] ?
gs_change+0x13/0x13
kernel: [2337728.094289] ---[ end trace a38cf088269411b3 ]---
kernel: [2337728.094731] ------------[ cut here ]------------
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