Bug 171645
| Summary: | Oops kernel NULL pointer | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 4 | Reporter: | BEA Boulder <eca-labadmin> |
| Component: | kernel | Assignee: | Larry Woodman <lwoodman> |
| Status: | CLOSED ERRATA | QA Contact: | Brian Brock <bbrock> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 4.0 | CC: | jbaron |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i386 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | RHSA-2006-0575 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2006-08-10 21:26:35 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: | 181409 | ||
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Description
BEA Boulder
2005-10-24 17:50:52 UTC
Can someone tell me if this is reproducable or not? From what I can tell, try_to_unmap() called try_to_unmap_file() which passed the NULL page->mapping->i_mmap_lock to spin_lock() and that caused the OOPs. Without being able to reproduce this I cant really debug the problem. Thanks, Larry Woodman Fault occurred during a webcrawler search of the server. I am attempting to trace the source of crawler session for replay. Excerpt of Apache access logs with valid URL of the form "http://usbohp380-7/cgi-bin/htsearch";: grep /cgi-bin/htsearch/ /etc/httpd/logs/access_log* access_log.2:206.189.193.220 - - [19/Oct/2005:08:59:53 -0600] "GET /cgi-bin/htsearch?exclude=%60/etc/passwd%60 HTTP/1.0" 200 391 "-" "-" access_log.2:206.189.193.220 - - [19/Oct/2005:09:00:04 -0600] "GET /cgi-bin/htsearch?-c/nonexistent HTTP/1.0" 200 391 "-" "-" Only these entries are non "404" and run "htsearch". Neither one reproduces the system crash but they do fail with the following: ht://Dig error htsearch detected an error. Please report this to the webmaster of this site by sending an e-mail to: root@localhost The error message is: Unable to read word database file '/var/lib/htdig/db.words.db' Did you run htdig? This issue is on Red Hat Engineering's list of planned work items for the upcoming Red Hat Enterprise Linux 4.4 release. Engineering resources have been assigned and barring unforeseen circumstances, Red Hat intends to include this item in the 4.4 release. committed in stream U4 build 34.19. A test kernel with this patch is available from http://people.redhat.com/~jbaron/rhel4/ However, there is a *serious* slab corruption issue with this kernel, and thus it should not be released to customers under any circumstances. I'll update this bug when the kernel is stable again. We've identified the corruption as specfic to x86-64 smp kernel builds 34.16 and 34.17. All other builds are safe for consumption. 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/RHSA-2006-0575.html |