From Bugzilla Helper: User-Agent: Mozilla/4.75 [en] (X11; U; Linux 2.4.2-0.1.32 i686) When running Cerberus tests on an 8-way with 8gb of memory, system hangs within 10 minutes of start of testing with enterprise kernel. System has 16gb of swap. Reproducible: Always Steps to Reproduce: 1.Load 7.1 2.start cerberus 3. wait 10 minutes Only "magic" sysrq key works. I will attach a ksymoops output.
Created attachment 15264 [details] ksymoops from magic sysreq dump
This is a deadlock involving zone pressure when dealing with bounce buffers. It will only occur with the enterprise kernel, and then only on machines containing memory with physical addresses above 4GB. We are investigating. The amount of time it takes to reproduce this is variable. It happens only under a combination of extreme IO load and extreme memory pressure.
Since this is a sev-1 bug with the gold CDs, can we move this out of the beta team to public? -Matt
Resolved in SBE kernel 2.4.3-6, therefore also in errata kernel 2.4.3-12. Closing.