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Bug 1987346

Summary:	gcc-toolset-11-annobin-9.79-1.el8 test failures
Product:	Red Hat Enterprise Linux 8	Reporter:	Martin Cermak <mcermak>
Component:	annobin	Assignee:	Nick Clifton <nickc>
annobin sub component:	gcc-toolset-11	QA Contact:	Martin Cermak <mcermak>
Status:	CLOSED ERRATA	Docs Contact:
Severity:	unspecified
Priority:	unspecified	CC:	fweimer, mcermak, nickc, tschelle, vkadlcik
Version:	8.5	Keywords:	Bugfix, Triaged
Target Milestone:	beta	Flags:	pm-rhel: mirror+
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	gcc-toolset-11-annobin-9.85-1.el8	Doc Type:	No Doc Update
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-11-09 18:43:11 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:

Description Martin Cermak 2021-07-29 14:24:47 UTC

I've been looking at how gcc-toolset-11-annobin-9.79-1.el8 plays with gcc-toolset-11-gcc-11.2.1-1.el8 and found the following:

the annobin test coverage passed entirely (incl. the annocheck-clean testcase), except for 2 failing tests:

/tools/annobin/Regression/annobin-fails-to-skip-endbr64-entry-point-check     (covers BZ#1958954)
/tools/annobin/Regression/hardening-annobin-regression-in-ppc64le-toolchain   (covers BZ#1934189)


The errors in both cases are:

Hardened: a.out: FAIL: stack-clash test because -fstack-clash-protection not enabled (function: f1) 
Hardened: a.out: FAIL: cf-protection test because no protection enabled (function: f1) 
Hardened: a.out: FAIL: stack-clash test because -fstack-clash-protection not enabled (function: f2) 
Hardened: a.out: FAIL: cf-protection test because no protection enabled (function: f2) 


That looks like some of bz1977997, bz1978176, or bz1979523, wasn't fixed in gcc-toolset-11-annobin-plugin-gcc-9.79-1.el8 yet.

Comment 1 Nick Clifton 2021-08-09 12:15:37 UTC

Hi Martin,

  This is another example of the problems that happen when gcc and annobin are out of sync.

  If you look in the verbose output from annocheck, just before the FAIL messages, you will see:

Hardened: a.out: The annobin plugin was built by an older version of the compiler.
Hardened: debug: Annobin plugin was built by gcc 11.1.1 but run on gcc version 11.2.1.
Hardened: debug: If there are WARN or FAIL results that appear to be incorrect, it could be due to this discrepancy.
Hardened: a.out: skip: warnings test because LTO compilation discards preprocessor options 

  Plus if you run the final link command with the annobin plugin's verbose flag enabled you will see:

 gcc `rpm --eval %build_ldflags` -shared f1.o f2.o -fplugin=annobin -fplugin-arg-annobin-verbose
[...]
annobin: lto: Annobin built by gcc 11.1.1 20210623, running on gcc 11.2.1 20210728
annobin: lto: WARN: gcc variable 'ix86_isa_flags' not found within cl_vars array
annobin: lto: Target's pointer size: 64 bits
annobin: lto: Error: Could not find option in cl_options, using flag instead
annobin: lto: debug: index = 1465 (-fstack-clash-protection) max = 2017
annobin: lto: Error: Could not find option in cl_options, using flag instead
annobin: lto: debug: index = 906 (-fcf-protection) max = 2017
[...]

  (I am running these tests on a Fedora rawhide mock chroot, but I assume that the same thing is happening on your RHEL-8 box)

  If you build the test files with an annobin that matches the gcc version used (eg rawhide's 9.84-1.fc35) then the test works.

  So I will set the DTM field and wait for an ITM so that I can rebuild annobin.

Cheers
  Nick

Comment 2 Nick Clifton 2021-08-11 14:33:12 UTC

Fixed in gcc-toolset-11-annobin-9.85-1.el8

Comment 4 Martin Cermak 2021-08-11 17:54:54 UTC

Verified with gcc-toolset-11-annobin-9.85-1.el8.

Comment 5 Martin Cermak 2021-08-11 18:00:13 UTC

errata attach request https://issues.redhat.com/browse/ERRATA-10004

Comment 9 errata-xmlrpc 2021-11-09 18:43:11 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 (new packages: gcc-toolset-11-annobin), 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-2021:4258