Bug 541080
| Summary: | MRG Kernel crashes when we run "cset set" command, but the crash is random. | ||||||
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| Product: | Red Hat Enterprise MRG | Reporter: | tushar <pateltusharv> | ||||
| Component: | realtime-kernel | Assignee: | Steven Rostedt <srostedt> | ||||
| Status: | CLOSED WORKSFORME | QA Contact: | David Sommerseth <davids> | ||||
| Severity: | urgent | Docs Contact: | |||||
| Priority: | high | ||||||
| Version: | 1.0 | CC: | bhu, lgoncalv, ovasik, pateltusharv, pzijlstr, tao, williams | ||||
| Target Milestone: | 1.2.4 | Keywords: | Reopened | ||||
| Target Release: | --- | ||||||
| Hardware: | x86_64 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2012-01-09 22:05:55 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: | |||||||
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Description
tushar
2009-11-24 22:37:43 UTC
I tried this on a del 610 with 16 CPUs (2x4-core hyperthreaded). I downloaded libbitmask and libcpuset from: ftp://oss.sgi.com/projects/cpusets/download/libbitmask-2.0.tar.bz2 ftp://oss.sgi.com/projects/cpusets/download/libcpuset-1.0.tar.bz2 I built and installed them and installed cpuset 1.5.2 I then ran: [root@dell-r610-1 cpuset-1.5.2]# ./cset set cset: Name CPUs-X MEMs-X Tasks Subs Path ------------ ---------- - ------- - ----- ---- ---------- root 0-15 y 0-1 y 458 0 / [root@dell-r610-1 cpuset-1.5.2]# ./cset set -l cset: Name CPUs-X MEMs-X Tasks Subs Path ------------ ---------- - ------- - ----- ---- ---------- root 0-15 y 0-1 y 458 0 / I did both of the above several times. Then just to play, I did: [root@dell-r610-1 cpuset-1.5.2]# ./cset set -c 8-15 test cset: --> created cpuset "test" [root@dell-r610-1 cpuset-1.5.2]# ./cset set -l cset: Name CPUs-X MEMs-X Tasks Subs Path ------------ ---------- - ------- - ----- ---- ---------- root 0-15 y 0-1 y 458 1 / test 8-15 n 0 n 0 0 /test [root@dell-r610-1 cpuset-1.5.2]# ./cset set -m 1 test cset: --> modified cpuset "test" [root@dell-r610-1 cpuset-1.5.2]# ./cset set -l cset: Name CPUs-X MEMs-X Tasks Subs Path ------------ ---------- - ------- - ----- ---- ---------- root 0-15 y 0-1 y 458 1 / test 8-15 n 1 n 0 0 /test And everything worked fine. I could not reproduce the bug. Perhaps there is some other configuration I need to perform. Can you please run sosreport and attach the resulting file. I have provided the sosreport that was attached to the IT. Created attachment 375927 [details]
sosreport for RT system with cgroup oops
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-2010-0041.html Event posted on 03-12-2010 11:04am CST by jbrier Customer doesn't have a vmcore. Has Engineering made any progress on this? === we are using "cset set -l" command - this crashes/panics the system. I dont have core at this time. Meanwhile can you please investigate why the patch that you recommended is not working ? === Internal Status set to 'Waiting on SEG' This event sent from IssueTracker by streeter issue 371974 I haven't been able to reproduce this on our 2.6.33-based kernel. |