Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

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Bug 1781152

Summary:	gcc, libgcc need PAC unwinder to assure containers don't crash on newer systems. [rhel-7.6.z]
Product:	Red Hat Enterprise Linux 7	Reporter:	RAD team bot copy to z-stream <autobot-eus-copy>
Component:	gcc	Assignee:	Marek Polacek <mpolacek>
Status:	CLOSED ERRATA	QA Contact:	Alexandra Petlanová Hájková <ahajkova>
Severity:	low	Docs Contact:
Priority:	high
Version:	7.6-Alt	CC:	bgollahe, fweimer, jakub, jlinton, mcermak, mpolacek, ohudlick, tborcin
Target Milestone:	rc	Keywords:	ZStream
Target Release:	---
Hardware:	aarch64
OS:	Linux
Whiteboard:
Fixed In Version:	gcc-4.8.5-37.el7_6	Doc Type:	Bug Fix
Doc Text:	Cause: System libgcc couldn't parse the new DWARF operation introduced in the ARMv8.3-A Pointer Authentication Extension, supported in newer compilers. Consequence: Application could crash when DWARF unwinding. Fix: Extend libgcc so that it can parse the new DWARF operation used when return addresses haven been signed. Result: The application crash doesn't occur anymore.	Story Points:	---
Clone Of:	1769573	Environment:
Last Closed:	2020-01-21 17:02:10 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:
Bug Depends On:	1769573
Bug Blocks:

Description RAD team bot copy to z-stream 2019-12-09 12:40:48 UTC

This bug has been copied from bug #1769573 and has been proposed to be backported to 7.6 z-stream (EUS).

Comment 4 Alexandra Petlanová Hájková 2020-01-13 15:13:20 UTC

Hi Jeremy,

could you  make some suggestions how to test this bug, please?

Comment 7 errata-xmlrpc 2020-01-21 17:02:10 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/RHBA-2020:0180