Bug 1509021 – [MRG-RT] Possible regression with NOHZ_FULL & rt_mutexes in IRQ (BZ1250649)

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Bug 1509021 - [MRG-RT] Possible regression with NOHZ_FULL & rt_mutexes in IRQ (BZ1250649)

Summary:	[MRG-RT] Possible regression with NOHZ_FULL & rt_mutexes in IRQ (BZ1250649)

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise MRG
Classification:	Red Hat
Component:	realtime-kernel (Show other bugs)
Sub Component:
Version:	2.5
Hardware:	x86_64 Linux

Priority	unspecified Severity urgent
Target Milestone:	---
Target Release:	---
Assigned To:	Clark Williams
QA Contact:	Jiri Kastner
Docs Contact:	Marie Dolezelova

URL:
Whiteboard:
Keywords:

Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2017-11-02 13:11 EDT by Daniel Bristot de Oliveira
Modified:	2018-03-12 10:25 EDT (History)
CC List:	3 users (show)

See Also:
Fixed In Version:	kernel-rt-3.10.0-693.11.1.rt56.596.el6rt
Doc Type:	Bug Fix
Doc Text:	In the realtime kernel, if the rt_mutex locking mechanism was taken in the interrupt context, the normal priority inheritance protocol incorrectly identified a deadlock, and a kernel panic occurred. This update reverts the patch that added rt_mutex in the interrupt context, and the kernel no longer panics due to this behavior.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2017-11-30 08:15:53 EST
Type:	Bug
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
[PATCH] re-apply Revert "timers: do not raise softirq (5.06 KB, application/mbox) 2017-11-03 05:50 EDT, Daniel Bristot de Oliveira	no flags	Details
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Knowledge Base (Solution)	3231811	None	None	None	2017-11-03 08:23 EDT
Red Hat Product Errata	RHSA-2017:3295	normal	SHIPPED_LIVE	Moderate: kernel-rt security and bug fix update	2017-11-30 13:14:28 EST

Groups: None (edit)

Comment 1 Daniel Bristot de Oliveira 2017-11-03 05:50 EDT

Created attachment 1347234 [details]
[PATCH] re-apply Revert "timers: do not raise softirq

Patch

Comment 7 errata-xmlrpc 2017-11-30 08:15:53 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://access.redhat.com/errata/RHSA-2017:3295

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