Xen 4.1 Kernel oops 1

Apr 10 04:09:21 localhost kernel: [  539.684068] ------------[ cut here ]------------
Apr 10 04:09:21 localhost kernel: [  539.684082] WARNING: at /usr/src/linux-2.6.34-xen-r4/net/sched/sch_generic.c:256 dev_watchdog+0x299/0x2b0()
Apr 10 04:09:21 localhost kernel: [  539.684086] Hardware name: S5520HC
Apr 10 04:09:21 localhost kernel: [  539.684088] NETDEV WATCHDOG: eth0 (tulip): transmit queue 0 timed out
Apr 10 04:09:21 localhost kernel: [  539.684090] Modules linked in: coretemp hwmon nfsd lockd nfs_acl sunrpc iptable_mangle ipt_LOG xt_limit ipt_REJECT xt_conntrack iptable_filter ipt_REDIRECT iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 ip_tables ip6table_mangle ip6_tables sit tunnel4 ipv6 bridge stp llc ext2 fuse usbhid i2c_i801 ehci_hcd uhci_hcd tulip usbcore igb 3w_9xxx uvesafb fbcon font tileblit bitblit softcursor fb cfbimgblt cfbfillrect cfbcopyarea
Apr 10 04:09:21 localhost kernel: [  539.684127] Pid: 0, comm: swapper Not tainted 2.6.34-xen-r4-dom0 #6
Apr 10 04:09:21 localhost kernel: [  539.684129] Call Trace:
Apr 10 04:09:21 localhost kernel: [  539.684131]  <IRQ>  [<ffffffff81038588>] warn_slowpath_common+0x78/0xb0
Apr 10 04:09:21 localhost kernel: [  539.684144]  [<ffffffff8103861c>] warn_slowpath_fmt+0x3c/0x40
Apr 10 04:09:21 localhost kernel: [  539.684148]  [<ffffffff813511d9>] dev_watchdog+0x299/0x2b0
Apr 10 04:09:21 localhost kernel: [  539.684152]  [<ffffffff81350f40>] ? dev_watchdog+0x0/0x2b0
Apr 10 04:09:21 localhost kernel: [  539.684157]  [<ffffffff8104493b>] run_timer_softirq+0x17b/0x2c0
Apr 10 04:09:21 localhost kernel: [  539.684162]  [<ffffffff8103ef6e>] __do_softirq+0xce/0x170
Apr 10 04:09:21 localhost kernel: [  539.684167]  [<ffffffff81005ebc>] call_softirq+0x1c/0x30
Apr 10 04:09:21 localhost kernel: [  539.684170]  [<ffffffff81007cf5>] do_softirq+0xa5/0xe0
Apr 10 04:09:21 localhost kernel: [  539.684174]  [<ffffffff8103e8cd>] irq_exit+0x3d/0x50
Apr 10 04:09:21 localhost kernel: [  539.684180]  [<ffffffff81277d72>] evtchn_do_upcall+0x212/0x260
Apr 10 04:09:21 localhost kernel: [  539.684184]  [<ffffffff81005a0e>] do_hypervisor_callback+0x1e/0x30
Apr 10 04:09:21 localhost kernel: [  539.684186]  <EOI>  [<ffffffff810083c0>] ? xen_safe_halt+0x10/0x20
Apr 10 04:09:21 localhost kernel: [  539.684194]  [<ffffffff8100cea7>] ? xen_idle+0x27/0x60
Apr 10 04:09:21 localhost kernel: [  539.684197]  [<ffffffff81004554>] ? cpu_idle+0xa4/0xf0
Apr 10 04:09:21 localhost kernel: [  539.684204]  [<ffffffff813d58a4>] ? cpu_bringup_and_idle+0xe/0x10
Apr 10 04:09:21 localhost kernel: [  539.684207] ---[ end trace ec0a8e07ca06a92e ]---
Apr 10 04:09:21 localhost kernel: [  539.685753] 0000:07:00.0: tulip_stop_rxtx() failed (CSR5 0xfc07c057 CSR6 0xff970111)