Systems with large amounts of memory (1 TB and higher) may result in kdump crashes due to out-of-memory errors. The error usually results in a kernel panic with the error message:
Kernel panic - not syncing: timer doesn't work through Interrupt-remapped IO-APIC
Workaround: Edit the
/etc/sysconfig/kdump
file and append the
"iommu=off
" option to the end of
KDUMP_COMMANDLINE_APPEND variable.
After you have finished editing the file, perform the following steps as root on the command line of the affected server:
# touch /etc/kdump.conf service kdump restart
Bug 18629716