My Oracle Support Banner

DomU's With Kernel 3.8.13-68.el6uek.x86_64 Losing Network Connectivity (Doc ID 2028721.1)

Last updated on AUGUST 04, 2018

Applies to:

Oracle VM - Version 3.3.2 to 3.3.2 [Release OVM33]
Linux x86-64

Symptoms

domU running with kernel 3.8.13-68.el6uek.x86_64 are losing the network, usually during heavy network traffic on the dom0.     domU's with kernel 3.8.13-16.2.2.el6uek.x86_64 don't have the same problem.  

The affected domU's are still running and can be connected to via the console, but they have no network connectivity. Restarting the network services makes no difference.  

Logs on Oracle VM server Dom0: 

 Jun  1 05:51:53 ovs01 kernel: registered taskstats version 1 
Jun  1 05:51:53 ovs01 kernel: IMA: No TPM chip found, activating  TPM-bypass!
Jun  1 05:51:53 ovs01 kernel: xenbus_probe_frontend: Device with no  driver: device/vbd/51712
Jun  1 05:51:53 ovs01 kernel: xenbus_probe_frontend: Device with no  driver: device/vbd/51728
Jun  1 05:51:53 ovs01 kernel: xenbus_probe_frontend: Device with no  driver: device/vbd/51744
Jun  1 05:51:53 ovs01 kernel: xenbus_probe_frontend: Device with no  driver: device/vif/0 
Jun  1 05:51:53 ovs01 kernel: drivers/rtc/hctosys.c: unable to open  rtc device (rtc0)

The logs on DomU:

kernel: vif vif-6-0 vif6.0: txreq.offset: 8ee, size: 3858, end: 6144
kernel: vif vif-6-0 vif6.0: fatal error; disabling device
kernel: BUG: scheduling while atomic: swapper/0/0/0x00000100

Cause

To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!


In this Document
Symptoms
Cause
Solution
References


My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.