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[Bug dynamic-link/20831] _dl_map_segments does not test for __mprotect failures consistently


https://sourceware.org/bugzilla/show_bug.cgi?id=20831

--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=9ace4692b2fa96c1c92177bb51e5e36680de25ad

commit 9ace4692b2fa96c1c92177bb51e5e36680de25ad
Author: Dmitry V. Levin <ldv@altlinux.org>
Date:   Wed Nov 16 22:49:25 2016 +0000

    Check for __mprotect failure in _dl_map_segments [BZ #20831]

    * elf/dl-map-segments.h (_dl_map_segments): Check for failure
    of __mprotect to change protection on the excess portion
    to disallow all access.

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog             |    7 +++++++
 elf/dl-map-segments.h |   20 ++++++++++++--------
 2 files changed, 19 insertions(+), 8 deletions(-)

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