From Bugzilla Helper: User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.12) Gecko/20050915 Firefox/1.0.7 Description of problem: The current x86_64 CPU hotplug code has a serious bug in it where uninitialized per-cpu data is being used, causing strange values in /proc/stat and /proc/loadavg, and possibly more significant corruption. Version-Release number of selected component (if applicable): 2.6.13-1.1594_FC5 How reproducible: Always Steps to Reproduce: $ cat /proc/loadavg Actual Results: 1520403.66 -986344.09 666845.94 1/68 23510 Expected Results: Should be small numbers, and never negative. Additional info: Disable CONFIG_HOTPLUG_CPU until fixed.
*** Bug 169696 has been marked as a duplicate of this bug. ***
*** Bug 169983 has been marked as a duplicate of this bug. ***
Created attachment 119699 [details] [PATCH] Fix hotplug cpu on x86_64
*** Bug 170408 has been marked as a duplicate of this bug. ***
Fixed in kernel 2.6.14-rc4
kernel-2.6.13-1.1601_FC5 has the fix.