Bug 162683
| Summary: | [RHEL3 and RHEL2.1] ps command core dump | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 3 | Reporter: | Issue Tracker <tao> |
| Component: | kernel | Assignee: | Dave Anderson <anderson> |
| Status: | CLOSED ERRATA | QA Contact: | Brian Brock <bbrock> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 3.0 | CC: | dhoward, kzak, lwang, petrides, tao |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | RHSA-2006-0144 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2006-03-15 16:12:20 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: | 168424 | ||
|
Description
Issue Tracker
2005-07-07 16:46:29 UTC
This is a kernel problem. See new versions of kernel (e.g 2.6.13) -- there's
spin lock for access to task->comm and routines don't use the task->comm field
directly, but there's API (set_task_comm() and get_task_comm()).
See: linux-2.4.21/fs/proc/array.c: proc_pid_stat() where is sprintf("%s",
task->comm).
Note: the kernel task_struct->comm race condition causes ps core dump, because the ps command doesn't check for format of /proc/*/stat data. A possible workaround could be detect and ignore processes with corrupted /proc/*/stat. But I vote for real bug fix in RHEL3 kernel :-) This is a dup of bug 138730, but I won't yet close it as such because of current access restrictions. A patch to fix this has been posted for internal review and is expected to committed to the next U7 build. Access restrictions on bug 138730 have now been lifted. *** This bug has been marked as a duplicate of 138730 *** A fix for this problem has just been committed to the RHEL3 U7 patch pool this evening (in kernel version 2.4.21-37.5.EL). 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-2006-0144.html |