Bug 455323
| Summary: | No support for upstream /proc/sys/kernel/nmi_watchdog. | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 5 | Reporter: | David Bein <d.bein> |
| Component: | kernel | Assignee: | Don Zickus <dzickus> |
| Status: | CLOSED ERRATA | QA Contact: | Igor Zhang <yugzhang> |
| Severity: | low | Docs Contact: | |
| Priority: | low | ||
| Version: | 5.2 | CC: | dzickus, jburke, yugzhang |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-01-13 20:42:11 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
David Bein
2008-07-14 20:10:47 UTC
oddly /proc/sys/kernel/unknown_nmi_panic accomplishes the same thing with the quirk of panicing when an unknown nmi comes in. It should probably be changed but if it isn't urgent we may just leave RHEL-5 as is. Cheers, Don (In reply to comment #1) > oddly /proc/sys/kernel/unknown_nmi_panic accomplishes the same thing with the > quirk of panicing when an unknown nmi comes in. It should probably be changed > but if it isn't urgent we may just leave RHEL-5 as is. > > Cheers, > Don Yes it does, but having the system panic if it is not set is (as you mention) not terribly friendly. I think this ought to be fixed so that we could turn off both the NMI watchdog and the panic on unknown NMI's. It's not particularly urgent at this point. Mostly this is about kernel.org compatibility from a script/setup perspective. 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 kernel-2.6.18-219.el5 You can download this test kernel from http://people.redhat.com/jwilson/el5 Detailed testing feedback is always welcomed. A minor problem. nmi_watchdog can accept a value of -1 and set itself as 1, is this ok? [root@intel-s3e3144-05 ~]# echo 0 > /proc/sys/kernel/nmi_watchdog [root@intel-s3e3144-05 ~]# cat /proc/sys/kernel/nmi_watchdog 0 [root@intel-s3e3144-05 ~]# echo -1 > /proc/sys/kernel/nmi_watchdog [root@intel-s3e3144-05 ~]# cat /proc/sys/kernel/nmi_watchdog 1 (In reply to comment #10) > A minor problem. > nmi_watchdog can accept a value of -1 and set itself as 1, is this ok? > [root@intel-s3e3144-05 ~]# echo 0 > /proc/sys/kernel/nmi_watchdog > [root@intel-s3e3144-05 ~]# cat /proc/sys/kernel/nmi_watchdog > 0 > [root@intel-s3e3144-05 ~]# echo -1 > /proc/sys/kernel/nmi_watchdog > [root@intel-s3e3144-05 ~]# cat /proc/sys/kernel/nmi_watchdog > 1 This should be fine. I think the upstream kernel.org version behaves in the same way. *** Bug 500845 has been marked as a duplicate of this bug. *** 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-2011-0017.html |