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Test your applicationsUpgrade RHEL:6 kernel-debug to version 0:2.6.32-573.12.1.el6 or higher.
This issue was patched in RHSA-2015:2636.
Note: Versions mentioned in the description apply only to the upstream kernel-debug package and not the kernel-debug package as distributed by RHEL.
See How to fix? for RHEL:6 relevant fixed versions and status.
The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a denial of service (host OS panic or hang) by triggering many #AC (aka Alignment Check) exceptions, related to svm.c and vmx.c.