Red Hat Bugzilla – Bug 183682
OOM killer, then NMI watchdog, on FC5-post-test3 x86_64
Last modified: 2007-11-30 17:11:26 EST
Description of problem: Running Fedora Core 5 rawhide tree as of 02-March-2006. Kernel 2.6.15-1.1996_FC5 x86_64 on a Dell Precision 380. This system is used to run 'mock' for building packages. System has 1GB RAM, 2GB swap, and one socket with a dual-core Intel(R) Pentium(R) D CPU 3.00GHz. Often (not always, not terribly rare though), while running mock to build the libsmbios .src.rpm packages for various releases, the kernel will invoke the OOM killer, and subsequently, the NMI watchdog will fire. The box is then hung. A trace of the failure was captured. This has been happening on kernels from -test3 to version noted. If multiple mock builds are run in parallel, failure happens sooner. Version-Release number of selected component (if applicable): 2.6.15-1.1996_FC5 x86_64 How reproducible: fairly often, several times a day Steps to Reproduce: 1. mock -r fedora-4-x86_64.cfg libsmbios-$version.src.rpm 2. wait
Created attachment 125561 [details] fc5-oom.txt
I'm having similar problems on my dualcore AMD64 machine. http://www.redhat.com/archives/rhl-list/2006-May/msg04862.html It sounds like you're a little better at diagnosing these things than me, maybe my notes will give you some ideas?
Hmm, my problems were fixed by reinstalling FC5. I have no idea what the original problem was. Prior to that, swapping in a singlecore CPU failed to help.
Not seen by me in quite a while with newer kernels. Closing.