[compiler-rt] r200464 - [msan] Intercept *getxattr and *listxattr.

[Sergey Matveev]

Thanks for the catch, that was an actual bug in test. Please try with
r202846.


On 2 марта 2014 г., 19:13, Dmitri Gribenko <gribozavr at gmail.com> wrote:

> On Thu, Jan 30, 2014 at 12:21 PM, Sergey Matveev <earthdok at google.com>
> wrote:
> > Author: smatveev
> > Date: Thu Jan 30 06:21:12 2014
> > New Revision: 200464
> >
> > URL: http://llvm.org/viewvc/llvm-project?rev=200464&view=rev
> > Log:
> > [msan] Intercept *getxattr and *listxattr.
> >
> > Added:
> >     compiler-rt/trunk/lib/msan/lit_tests/Linux/xattr.cc
> >     compiler-rt/trunk/lib/msan/lit_tests/Linux/xattr_test_root/
> >     compiler-rt/trunk/lib/msan/lit_tests/Linux/xattr_test_root/a
> > Modified:
> >
> compiler-rt/trunk/lib/sanitizer_common/sanitizer_common_interceptors.inc
> >     compiler-rt/trunk/lib/sanitizer_common/sanitizer_common_syscalls.inc
> >
> compiler-rt/trunk/lib/sanitizer_common/sanitizer_platform_interceptors.h
> >
> > Added: compiler-rt/trunk/lib/msan/lit_tests/Linux/xattr.cc
> > URL:
> http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/msan/lit_tests/Linux/xattr.cc?rev=200464&view=auto
> >
> ==============================================================================
> > --- compiler-rt/trunk/lib/msan/lit_tests/Linux/xattr.cc (added)
> > +++ compiler-rt/trunk/lib/msan/lit_tests/Linux/xattr.cc Thu Jan 30
> 06:21:12 2014
> > @@ -0,0 +1,142 @@
> > +// RUN: %clangxx_msan -m64 -O0 %s -o %t && %t %p 2>&1
> > +// RUN: %clangxx_msan -m64 -O0 -D_FILE_OFFSET_BITS=64 %s -o %t && %t %p
> 2>&1
> > +// RUN: %clangxx_msan -m64 -O3 %s -o %t && %t %p 2>&1
>
> Hi Sergey,
>
> This test fails on CentOS 6.5:
>
> FAIL: MemorySanitizer :: Linux/xattr.cc (5 of 62)
> ******************** TEST 'MemorySanitizer :: Linux/xattr.cc' FAILED
> ********************
> Script:
> --
> /home/llvmbb/clang/build-cmake-r+a/./bin/clang --driver-mode=g++
> -fsanitize=memory -mno-omit-leaf-frame-pointer -fno-omit-frame-pointer
> -fno-optimize-sibling-calls -g -m64 -m64 -O0
> /home/llvmbb/clang/llvm/projects/compiler-rt/test/msan/Linux/xattr.cc
> -o
> /home/llvmbb/clang/build-cmake-r+a/projects/compiler-rt/test/msan/Linux/Output/xattr.cc.tmp
> &&
> /home/llvmbb/clang/build-cmake-r+a/projects/compiler-rt/test/msan/Linux/Output/xattr.cc.tmp
> /home/llvmbb/clang/llvm/projects/compiler-rt/test/msan/Linux 2>&1
> /home/llvmbb/clang/build-cmake-r+a/./bin/clang --driver-mode=g++
> -fsanitize=memory -mno-omit-leaf-frame-pointer -fno-omit-frame-pointer
> -fno-optimize-sibling-calls -g -m64 -m64 -O0 -D_FILE_OFFSET_BITS=64
> /home/llvmbb/clang/llvm/projects/compiler-rt/test/msan/Linux/xattr.cc
> -o
> /home/llvmbb/clang/build-cmake-r+a/projects/compiler-rt/test/msan/Linux/Output/xattr.cc.tmp
> &&
> /home/llvmbb/clang/build-cmake-r+a/projects/compiler-rt/test/msan/Linux/Output/xattr.cc.tmp
> /home/llvmbb/clang/llvm/projects/compiler-rt/test/msan/Linux 2>&1
> /home/llvmbb/clang/build-cmake-r+a/./bin/clang --driver-mode=g++
> -fsanitize=memory -mno-omit-leaf-frame-pointer -fno-omit-frame-pointer
> -fno-optimize-sibling-calls -g -m64 -m64 -O3
> /home/llvmbb/clang/llvm/projects/compiler-rt/test/msan/Linux/xattr.cc
> -o
> /home/llvmbb/clang/build-cmake-r+a/projects/compiler-rt/test/msan/Linux/Output/xattr.cc.tmp
> &&
> /home/llvmbb/clang/build-cmake-r+a/projects/compiler-rt/test/msan/Linux/Output/xattr.cc.tmp
> /home/llvmbb/clang/llvm/projects/compiler-rt/test/msan/Linux 2>&1
> --
> Exit Code: 77
>
> Command Output (stdout):
> --
> ==12910== WARNING: MemorySanitizer: use-of-uninitialized-value
>     #0 0x7f7f3031c249 in test_get(long (*)(char const*, char*,
> unsigned long), char const*, unsigned long)
> /home/llvmbb/clang/llvm/projects/compiler-rt/test/msan/Linux/xattr.cc:112
>     #1 0x7f7f3031c932 in main
> /home/llvmbb/clang/llvm/projects/compiler-rt/test/msan/Linux/xattr.cc:136
>     #2 0x7f7f2ef4ad1c in __libc_start_main (/lib64/libc.so.6+0x1ed1c)
>     #3 0x7f7f3031a888 in _start
>
> (/home/llvmbb/clang/build-cmake-r+a/projects/compiler-rt/test/msan/Linux/Output/xattr.cc.tmp+0x6f888)
>
> SUMMARY: MemorySanitizer: use-of-uninitialized-value
> /home/llvmbb/clang/llvm/projects/compiler-rt/test/msan/Linux/xattr.cc:112
> test_get(long (*)(char const*, char*, unsigned long), char const*,
> unsigned long)
> Exiting
>
> --
>
> I can provide ssh access to this machine to investigate, if this helps.
>
> Dmitri
>
> --
> main(i,j){for(i=2;;i++){for(j=2;j<i;j++){if(!(i%j)){j=0;break;}}if
> (j){printf("%d\n",i);}}} /*Dmitri Gribenko <gribozavr at gmail.com>*/
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20140304/62ac7a3a/attachment.html>