Red Hat Bugzilla – Bug 310801
Register backing store bug.
Last modified: 2013-08-05 21:43:38 EDT
Description of problem: A bug in the register backing store code can interact badly with the address space randomisation feature to cause applications to seg-fault. This is fixed by the attached patch, which has already been submitted back to the mainline kernel and is currently included in the 2.6.23-rc8 prepatch. Version-Release number of selected component (if applicable): Any IA64 Linux RH version could be effected, though it's unlikely that this issue will be noticed until the address space randomisation is turned on. How reproducible: This problem is always reproducible for me on our product, but I've not figured out exactly why we trigger the bug and other applications don't yet. Steps to Reproduce: So far I've not been unable to recreate this in a small, standalone example. Actual results: N/A Expected results: N/A Additional info:
Created attachment 210261 [details] Register backing store patch
This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux maintenance release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux Update release for currently deployed products. This request is not yet committed for inclusion in an Update release.
in 2.6.18-60.el5 You can download this test kernel from http://people.redhat.com/dzickus/el5
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2008-0314.html