Bug 681306
| Summary: | tape: deadlock on global work queue | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Joseph Kachuck <jkachuck> | ||||
| Component: | kernel | Assignee: | Hendrik Brueckner <brueckner> | ||||
| Status: | CLOSED ERRATA | QA Contact: | Red Hat Kernel QE team <kernel-qe> | ||||
| Severity: | unspecified | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 6.1 | CC: | brueckner, cward, peterm | ||||
| Target Milestone: | rc | Keywords: | OtherQA | ||||
| Target Release: | --- | ||||||
| Hardware: | Unspecified | ||||||
| OS: | Unspecified | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | kernel-2.6.32-130.el6 | Doc Type: | Bug Fix | ||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2011-05-19 12:00:19 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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The patch has been posted to rhkernel by Hendrik Brueckner <brueckner> 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. Patch(es) available on kernel-2.6.32-130.el6 @IBM, test results? 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-2011-0542.html |
Created attachment 481702 [details] linux-2.6.32-s390-tape-system-wq-deadlock.patch linux-2.6.32-s390-tape-system-wq-deadlock.patch Description: tape: deadlock on global work queue Symptom: System hang when using tape device driver. Problem: The 34xx and 3590 tape driver use the system work queue to defer work from the interrupt function to process context. The same work queue is used to retry a command if it failed with a deferred condition code. Therefore the work function may not wait for the end of a command, otherwise a deadlock occurs. Solution: Move the post processing of the tape commands started via the global work queue to the request callback function. Server architecture(s): System z Server type: s390x General component: kernel Other components involved: No Does the server have the latest GA firmware? Yes. Has the problem been shown to occur on more than one system? Yes. Is a tested patch available? Yes. If yes to the above, has it been approved upstream? The patch will be sent for upstream inclusion. What is the latest official Red Hat build on which this bug has been seen? RHEL6.1 Alpha With best regards, Hendrik