Bug 122708 - X.org doesn't work out of box with exec-shield
X.org doesn't work out of box with exec-shield
Status: CLOSED RAWHIDE
Product: Fedora
Classification: Fedora
Component: xorg-x11 (Show other bugs)
rawhide
All Linux
medium Severity medium
: ---
: ---
Assigned To: Mike A. Harris
David Lawrence
:
Depends On:
Blocks: FC2Blocker
  Show dependency treegraph
 
Reported: 2004-05-07 06:54 EDT by Mike A. Harris
Modified: 2007-11-30 17:10 EST (History)
0 users

See Also:
Fixed In Version: 6.7.0-2
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Environment:
Last Closed: 2004-05-07 07:58:48 EDT
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---


Attachments (Terms of Use)

  None (edit)
Description Mike A. Harris 2004-05-07 06:54:52 EDT
The assembler files in stock X and Mesa, do not use GNU stacks on
Linux systems, which means they will not work properly with
exec-shield.  I fixed this problem in XFree86 4.3.0 by writing the
XFree86-4.3.0-redhat-exec-shield-GNU-stack.patch patch, which
patched every assembler file to include .note.GNU-stack sections.

While that is considered a cleaner solution, my patch was non-portable
to non-GNU systems, so unsuitable for upstream acceptance as-was.  The
patch was disabled for X.org due to failure to apply, and didn't get
ported forward yet.

Nobody's noticed that X doesn't work with exec-shield aparently until
now.  ;o)

Jakub suggested an alternate solution of passing the assembler
"-Wa,--noexecstack", which is a simpler workaround for now instead
of porting patches each release or spending time to make sure the
patch works on every OS in existance.
Comment 1 Mike A. Harris 2004-05-07 06:58:34 EDT
Modified AsCmd as follows in 6.7.0-2

-#define AsCmd               CcCmd -c -x assembler
+#define AsCmd               CcCmd -c -x assembler -Wa,--noexecstack

Note You need to log in before you can comment on or make changes to this bug.