Bug 1400930 – RT kernel panics with dm-multipath enabled

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Bug 1400930 - RT kernel panics with dm-multipath enabled

Summary:	RT kernel panics with dm-multipath enabled

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise Linux 7
Classification:	Red Hat
Component:	kernel-rt (Show other bugs)
Sub Component:
Version:	7.4
Hardware:	Unspecified Unspecified

Priority	high Severity unspecified
Target Milestone:	rc
Target Release:	---
Assigned To:	Clark Williams
QA Contact:	Lin Li
Docs Contact:

URL:
Whiteboard:
Keywords:	ZStream

Depends On:	1389215
Blocks:
	Show dependency tree / graph

Reported:	2016-12-02 05:44 EST by Marcel Kolaja
Modified:	2017-01-17 13:25 EST (History)
CC List:	13 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:	Previously, the device mapper (DM) subsystem was not notified that the real-time kernel changes the way preemption works with spinlocks. This caused a kernel panic when the dm-multipath kernel module was loaded because the interrupt request (IRQ) check was invalid on the real-time kernel. This check has been corrected enabling the system to boot correctly with the dm-multipath module enabled.
Story Points:	---
Clone Of:	1389215
Environment:
Last Closed:	2017-01-17 13:25:55 EST
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2017:0091	normal	SHIPPED_LIVE	Important: kernel-rt security and bug fix update	2017-01-17 17:56:06 EST

Groups: None (edit)

Description Marcel Kolaja 2016-12-02 05:44:31 EST

This bug has been copied from bug #1389215 and has been proposed
to be backported to 7.3 z-stream (EUS).

Comment 3 Clark Williams 2016-12-13 15:08:43 EST

commit b984063401e0eddbc2c6fc0daf6a5257f7e4cba4 added to RT 7.3.z tree (cherry-picked from upstream commit: fef016306919048a4db85c43aad09593efb3af4b) and is in kernel-rt-3.10.0-514.5.1.rt56.el7 and higher.

Comment 8 errata-xmlrpc 2017-01-17 13:25:55 EST

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://rhn.redhat.com/errata/RHSA-2017-0091.html

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