Bug 483617
Summary: | reproducible panic in debugfs_remove when unmounting gfs2 filesystem | ||||||
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Product: | Red Hat Enterprise Linux 5 | Reporter: | Jeff Layton <jlayton> | ||||
Component: | kernel | Assignee: | Abhijith Das <adas> | ||||
Status: | CLOSED ERRATA | QA Contact: | Cluster QE <mspqa-list> | ||||
Severity: | high | Docs Contact: | |||||
Priority: | urgent | ||||||
Version: | 5.4 | CC: | dhoward, dzickus, emcnabb, jpirko, jplans, lwang, rpeterso, steved, swhiteho, syeghiay | ||||
Target Milestone: | rc | Keywords: | ZStream | ||||
Target Release: | --- | ||||||
Hardware: | All | ||||||
OS: | Linux | ||||||
Whiteboard: | |||||||
Fixed In Version: | Doc Type: | Bug Fix | |||||
Doc Text: | Story Points: | --- | |||||
Clone Of: | Environment: | ||||||
Last Closed: | 2009-09-02 08:01:43 UTC | Type: | --- | ||||
Regression: | --- | Mount Type: | --- | ||||
Documentation: | --- | CRM: | |||||
Verified Versions: | Category: | --- | |||||
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
Cloudforms Team: | --- | Target Upstream Version: | |||||
Embargoed: | |||||||
Bug Depends On: | |||||||
Bug Blocks: | 483701, 485910, 485920 | ||||||
Attachments: |
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Description
Jeff Layton
2009-02-02 16:29:51 UTC
Created attachment 330912 [details] This should fix the problem This is the RHEL5 version of the following upstream fix: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=88a19ad066c1aab2f9713beb670525fcc06e1c09 Posted above patch to rhkernel-list Do we need to clone this for 5.3.z ? 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. Confirmed. Patch seems to fix the panic. Subhendu, I'd like to have this cloned for z-stream for 5.3. Can I do that, or do I have to ask you to do it, or ...? What was the procedure to reproduce this panic? Just umount the fs. Some people always seem to see it, others never see it. Its a simple use-after-free bug. It's easily reproducible if you're using kernel-debug since the memory poisoning helps trigger the panic. Updating PM score. in kernel-2.6.18-132.el5 You can download this test kernel from http://people.redhat.com/dzickus/el5 Please do NOT transition this bugzilla state to VERIFIED until our QE team has sent specific instructions indicating when to do so. However feel free to provide a comment indicating that this fix has been verified. I tried the scenario in comment #11 with the debug version of 2.6.18-154.el5 and was not able to hit the panic. 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 therefore 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/RHSA-2009-1243.html |