Description of problem: Kernel panic occurs while starting Oracle software after upgrading the kernel from 2.6.9-67.0.15.ELsmp to 2.6.9-67.0.20.ELsmp Version-Release number of selected component (if applicable): How reproducible: always Steps to Reproduce: 1. Have EM agent running. or any multithreaded program Diagnosis: It appears the patch linux-2.6.9-sys_times-Fix-system-unresponsiveness-during-many-c.patch causes this BUG to trigger.
Hi Guru, Could you please provide us with some additional information on this bug? Can you provide us with test cases you used to determine that this patch is causing the problem? Are there any errors, logs, or straces (sysrq data) that you can provide? We'd like to work mutually with you in order to confirm your findings. Thanks Jeremy West
Also Guru, Who are the customers hitting this bug? We want to make sure we're working together and on the same page for any of these customer issues. --jwest
Created attachment 312299 [details] sys_times testcase Jeremy, here is the testcase that reproduces. Any program that is multithreaded and calls sys_times() will run into this issue.
RHEL 4 Update 7 has the same issue.
Keshav and Guru, Please note that our engineering teams have worked to resolve this issue and a patch was released in the latest RHEL4.7 errata kernel that fixes this problem. https://rhn.redhat.com/errata/RHBA-2008-0650.html Thanks Jeremy West