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[Bug libc/3429] Race in _dl_open with r_debug.r_state consistency check
- From: "cvs-commit at gcc dot gnu dot org" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sources dot redhat dot com
- Date: 12 Jan 2007 15:21:50 -0000
- Subject: [Bug libc/3429] Race in _dl_open with r_debug.r_state consistency check
- References: <20061027173127.3429.suzuki@in.ibm.com>
- Reply-to: sourceware-bugzilla at sourceware dot org
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2007-01-12 15:21 -------
Subject: Bug 3429
CVSROOT: /cvs/glibc
Module name: libc
Branch: glibc-2_5-branch
Changes by: jakub@sourceware.org 2007-01-12 15:21:33
Modified files:
. : ChangeLog
elf : Makefile dl-close.c dl-open.c
Added files:
elf : tst-thrlock.c
Log message:
* elf/dl-close.c (_dl_close_worker): Renamed from _dl_close and
split out locking and parameter checking.
(_dl_close): Call _dl_close_worker after locking and checking.
* elf/dl-open.c (_dl_open): Call _dl_close_worker instead of
_dl_close.
* elf/Makefile: Add rules to build and run tst-thrlock.
* elf/tst-thrlock.c: New file.
[BZ #3429]
* elf/dl-open.c (dl_open_worker): Keep holding dl_load_lock until
we are sure we do not need it anymore for _dl_close. Also move
the asserts inside the lock region.
Patch mostly by Suzuki <suzuki@in.ibm.com>.
Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/libc/ChangeLog.diff?cvsroot=glibc&only_with_tag=glibc-2_5-branch&r1=1.10362.2.7&r2=1.10362.2.8
http://sourceware.org/cgi-bin/cvsweb.cgi/libc/elf/tst-thrlock.c.diff?cvsroot=glibc&only_with_tag=glibc-2_5-branch&r1=NONE&r2=1.2.4.1
http://sourceware.org/cgi-bin/cvsweb.cgi/libc/elf/Makefile.diff?cvsroot=glibc&only_with_tag=glibc-2_5-branch&r1=1.315&r2=1.315.2.1
http://sourceware.org/cgi-bin/cvsweb.cgi/libc/elf/dl-close.c.diff?cvsroot=glibc&only_with_tag=glibc-2_5-branch&r1=1.117&r2=1.117.2.1
http://sourceware.org/cgi-bin/cvsweb.cgi/libc/elf/dl-open.c.diff?cvsroot=glibc&only_with_tag=glibc-2_5-branch&r1=1.128&r2=1.128.2.1
--
http://sourceware.org/bugzilla/show_bug.cgi?id=3429
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