Bug 1474188

Summary:	kernel/tcmu-runner: fix uio_poll crash during uio device removal
Product:	[Red Hat Storage] Red Hat Gluster Storage	Reporter:	Prasanna Kumar Kalever <prasanna.kalever>
Component:	tcmu-runner	Assignee:	Prasanna Kumar Kalever <prasanna.kalever>
Status:	CLOSED ERRATA	QA Contact:	Sweta Anandpara <sanandpa>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	rhgs-3.3	CC:	amukherj, kramdoss, mchristi, rcyriac, rhs-bugs, sanandpa, storage-qa-internal, storage-qe
Target Milestone:	---
Target Release:	RHGS 3.3.0
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	tcmu-runner-1.2.0-11.el7rhgs	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:	1465619	Environment:
Last Closed:	2017-09-21 04:20:54 UTC	Type:	Bug
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:	1465619, 1473162
Bug Blocks:	1417151

Comment 7 Sweta Anandpara 2017-08-03 11:07:58 UTC

Having discussed it with Prasanna, it will be difficult to hit this code path with the fix for uio_read() not yet in.

Hence, will be verifying this bug only after bz 1473162 is fixed.

Comment 8 krishnaram Karthick 2017-09-19 02:30:06 UTC

This issue is not seen at CNS (builds above cns-deploy-5.0.0-38.el7rhgs.x86_64). i.e., tcmu-runner-1.2.0-14.el7rhgs.x86_64

Logging and metrics using gluster block in ocp environment is up for close to 4 week now without any issues.

Comment 9 krishnaram Karthick 2017-09-19 05:21:17 UTC

(In reply to krishnaram Karthick from comment #8)
> This issue is not seen at CNS (builds above
> cns-deploy-5.0.0-38.el7rhgs.x86_64). i.e.,
> tcmu-runner-1.2.0-14.el7rhgs.x86_64
> 
> Logging and metrics using gluster block in ocp environment is up for close
> to 4 week now without any issues.

Please ignore this comment. This comment was not meant for this bug.

Comment 10 Sweta Anandpara 2017-09-19 10:40:52 UTC

Tested and verified this on the build tcmu-runner-1.2.0-15 and gluster-block-0.2.1-13 and gluster-3.8.4-44

Multiple block creates and deletes were given in parallel and in a sequence from different peer nodes, on a 2*3 volume. No crash (mentioned in description) was seen, this time or multiple other times that block deletes have been executed.

Moving this to verified in rhgs 3.3.0.

Comment 12 errata-xmlrpc 2017-09-21 04:20:54 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHEA-2017:2773