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From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/59410] Some tsan tests fail with 4GB RAM
Date: Fri, 06 Dec 2013 17:04:00 -0000 [thread overview]
Message-ID: <bug-59410-4-uK70T2TRwm@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-59410-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59410
--- Comment #14 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Kostya Serebryany from comment #11)
> > 555555554000-555555555000 r-xp 00000000 08:11 34221424
> > /export/build/gnu/gcc-x32/build-x86_64-linux/gcc/testsuite/atomic_stack.exe
>
> So, the executable is loaded into 555555554000, which intersects with
> tsan's shadow.
> See tsan/rtl/tsan_platform.h, around "C++ linux memory layout".
> In our experience this happens when ASLR is off.
> And this is caused by the kernel patch I mentioned above.
> https://code.google.com/p/thread-sanitizer/wiki/
> CppManual?ts=1386348951&updated=CppManual#FAQ
>
> We have not seen other reason for such mapping, maybe you know one :)
Kernel is free to load PIE at ANY address it wants. But
you can specify where to load PIE via a linker switch
-Ttext-segment 0x855555000000
to tell kernel to load PIE to a specific address.
next prev parent reply other threads:[~2013-12-06 17:04 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-06 16:28 [Bug sanitizer/59410] New: " hjl.tools at gmail dot com
2013-12-06 16:31 ` [Bug sanitizer/59410] " dvyukov at google dot com
2013-12-06 16:31 ` jakub at gcc dot gnu.org
2013-12-06 16:32 ` kcc at gcc dot gnu.org
2013-12-06 16:34 ` kcc at gcc dot gnu.org
2013-12-06 16:37 ` jakub at gcc dot gnu.org
2013-12-06 16:41 ` hjl.tools at gmail dot com
2013-12-06 16:42 ` hjl.tools at gmail dot com
2013-12-06 16:44 ` kcc at gcc dot gnu.org
2013-12-06 16:46 ` kcc at gcc dot gnu.org
2013-12-06 16:51 ` hjl.tools at gmail dot com
2013-12-06 16:56 ` kcc at gcc dot gnu.org
2013-12-06 16:56 ` hjl.tools at gmail dot com
2013-12-06 17:04 ` hjl.tools at gmail dot com [this message]
2013-12-06 17:05 ` jakub at gcc dot gnu.org
2013-12-06 17:11 ` kcc at gcc dot gnu.org
2013-12-06 17:15 ` kcc at gcc dot gnu.org
2013-12-06 17:23 ` hjl.tools at gmail dot com
2013-12-06 17:24 ` [Bug sanitizer/59410] tsan tests fail with address randomization disabled hjl.tools at gmail dot com
2013-12-06 17:26 ` hjl.tools at gmail dot com
2013-12-06 18:03 ` hjl.tools at gmail dot com
2013-12-06 18:08 ` kcc at gcc dot gnu.org
2013-12-06 18:16 ` hjl.tools at gmail dot com
2013-12-06 18:18 ` hjl.tools at gmail dot com
2013-12-07 8:02 ` kcc at gcc dot gnu.org
2013-12-07 11:26 ` hjl.tools at gmail dot com
2013-12-09 6:38 ` y.gribov at samsung dot com
2013-12-09 7:19 ` jakub at gcc dot gnu.org
2013-12-09 7:44 ` kcc at gcc dot gnu.org
2013-12-09 12:42 ` hjl.tools at gmail dot com
2014-01-31 12:27 ` y.gribov at samsung dot com
2014-01-31 21:26 ` jakub at gcc dot gnu.org
2014-12-12 16:17 ` dvyukov at google dot com
2014-12-12 16:46 ` hjl.tools at gmail dot com
2014-12-12 19:37 ` kcc at gcc dot gnu.org
2014-12-12 20:13 ` hjl.tools at gmail dot com
2014-12-23 4:43 ` dvyukov at google dot com
2014-12-23 4:45 ` dvyukov at google dot com
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