Bug ID 6837313: Under rare circumstances on UltraSPARC T2 and UltraSPARC T2 Plus based systems, adding new CPUs to a domain might cause that domain to panic. This panic is more likely to occur when CPUs are added after PCI buses have been added or removed.
Impact: The domain panics with a stack trace that might contain references to the n2rng driver.
Workaround: This problem is triggered when the n2rng driver initializes structures for storing statistics. The problem can be prevented by disabling the generation of statistics for the n2rng driver, as follows:
Edit the /platform/sun4v/kernel/drv/n2rng.conf file to add the following line:
nostats=1; |
Update the n2rng driver by running the following command:
# update_drv n2rng |