<div><div dir="auto">Hi</div></div><div dir="auto"><br></div><div dir="auto">If so, is it able to disable this check. All I need is just to get the BB coverage information</div><div dir="auto"><br></div><div dir="auto">Regards</div><div dir="auto">Muhui</div><div><br><div class="gmail_quote"><div dir="ltr">Alexander Potapenko <<a href="mailto:glider@google.com">glider@google.com</a>>于2018年9月5日 周三下午6:57写道：<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">This is a known problem in SPECCPU2006, see<br>
<a href="https://github.com/google/sanitizers/wiki/AddressSanitizerFoundBugs" rel="noreferrer" target="_blank">https://github.com/google/sanitizers/wiki/AddressSanitizerFoundBugs</a><br>
On Wed, Sep 5, 2018 at 7:36 AM Muhui Jiang via llvm-dev<br>
<<a href="mailto:llvm-dev@lists.llvm.org" target="_blank">llvm-dev@lists.llvm.org</a>> wrote:<br>
><br>
> Hi<br>
><br>
> I am using SanitizerCoverage feature supported by clang to get the basicblock coverage.<br>
><br>
> my tested binaries are spec cpu2006. I compiled the binary with the option<br>
> COPTIMIZE = -O0 -fsanitize=address -fsanitize-coverage=bb -flto -fno-strict-aliasing -std=gnu89 -gdwarf-3<br>
><br>
> After the compiling process is end. I run the 400.perlbench. with the command<br>
> ASAN_OPTIONS=coverage=1 ./perlbench. However, the AddressSanitizer detect the global buffer overflow and I could not run the perlbench properly.<br>
><br>
> Is there anything wrong or I missed some configurations? I just want to compile the binaries with instrumented coverage information so that I can calculate the bb coverage. Many Thanks<br>
><br>
><br>
> ==17619==ERROR: AddressSanitizer: global-buffer-overflow on address 0x000000b46465 at pc 0x00000049ffcd bp 0x7fff4f265ec0 sp 0x7fff4f265670<br>
><br>
> READ of size 6 at 0x000000b46465 thread T0<br>
><br>
> #0 0x49ffcc in __interceptor_memcmp.part.75 /home/jmh/Downloads/llvm-4/llvm/projects/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors.inc:690<br>
><br>
> #1 0x6843a0 in PerlIO_find_layer /home/jmh/Downloads/spec2006_v1.2/benchspec/CPU2006/400.perlbench/build/build_base_elf-64bit.0000/perlio.c:751:6<br>
><br>
> #2 0x6869fc in PerlIO_default_buffer /home/jmh/Downloads/spec2006_v1.2/benchspec/CPU2006/400.perlbench/build/build_base_elf-64bit.0000/perlio.c:1015:32<br>
><br>
> #3 0x683f13 in PerlIO_default_layers /home/jmh/Downloads/spec2006_v1.2/benchspec/CPU2006/400.perlbench/build/build_base_elf-64bit.0000/perlio.c:1113:6<br>
><br>
> #4 0x691cff in PerlIO_resolve_layers /home/jmh/Downloads/spec2006_v1.2/benchspec/CPU2006/400.perlbench/build/build_base_elf-64bit.0000/perlio.c:1433:26<br>
><br>
> #5 0x690ef3 in PerlIO_openn /home/jmh/Downloads/spec2006_v1.2/benchspec/CPU2006/400.perlbench/build/build_base_elf-64bit.0000/perlio.c:1519:15<br>
><br>
> #6 0x6907a1 in PerlIO_fdopen /home/jmh/Downloads/spec2006_v1.2/benchspec/CPU2006/400.perlbench/build/build_base_elf-64bit.0000/perlio.c:4745:12<br>
><br>
> #7 0x6906e8 in PerlIO_stdstreams /home/jmh/Downloads/spec2006_v1.2/benchspec/CPU2006/400.perlbench/build/build_base_elf-64bit.0000/perlio.c:1150:2<br>
><br>
> #8 0x6946ef in Perl_PerlIO_stdin /home/jmh/Downloads/spec2006_v1.2/benchspec/CPU2006/400.perlbench/build/build_base_elf-64bit.0000/perlio.c:4686:2<br>
><br>
> #9 0x66a465 in S_open_script /home/jmh/Downloads/spec2006_v1.2/benchspec/CPU2006/400.perlbench/build/build_base_elf-64bit.0000/perl.c:3348:12<br>
><br>
> #10 0x65f01d in S_parse_body /home/jmh/Downloads/spec2006_v1.2/benchspec/CPU2006/400.perlbench/build/build_base_elf-64bit.0000/perl.c:1718:5<br>
><br>
> #11 0x65b5b9 in perl_parse /home/jmh/Downloads/spec2006_v1.2/benchspec/CPU2006/400.perlbench/build/build_base_elf-64bit.0000/perl.c:1312:2<br>
><br>
> #12 0x696dd2 in main /home/jmh/Downloads/spec2006_v1.2/benchspec/CPU2006/400.perlbench/build/build_base_elf-64bit.0000/perlmain.c:96:18<br>
><br>
> #13 0x7f169601082f in __libc_start_main /build/glibc-Cl5G7W/glibc-2.23/csu/../csu/libc-start.c:291<br>
><br>
> #14 0x41bc58 in _start (/home/jmh/Downloads/spec2006_v1.2/benchspec/CPU2006/400.perlbench/build/build_base_elf-64bit.0000/perlbench+0x41bc58)<br>
><br>
><br>
> 0x000000b46465 is located 0 bytes to the right of global variable '<string literal>' defined in 'perlio.c:2566:5' (0xb46460) of size 5<br>
><br>
> '<string literal>' is ascii string 'unix'<br>
><br>
> SUMMARY: AddressSanitizer: global-buffer-overflow /home/jmh/Downloads/llvm-4/llvm/projects/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors.inc:690 in __interceptor_memcmp.part.75<br>
><br>
> Shadow bytes around the buggy address:<br>
><br>
> 0x000080160c30: 00 00 00 00 05 f9 f9 f9 f9 f9 f9 f9 00 00 00 00<br>
><br>
> 0x000080160c40: 06 f9 f9 f9 f9 f9 f9 f9 00 00 00 00 04 f9 f9 f9<br>
><br>
> 0x000080160c50: f9 f9 f9 f9 00 00 00 00 02 f9 f9 f9 f9 f9 f9 f9<br>
><br>
> 0x000080160c60: 00 00 00 00 00 00 00 00 06 f9 f9 f9 f9 f9 f9 f9<br>
><br>
> 0x000080160c70: 00 00 00 00 00 00 01 f9 f9 f9 f9 f9 00 00 00 00<br>
><br>
> =>0x000080160c80: 00 00 f9 f9 f9 f9 f9 f9 00 00 00 00[05]f9 f9 f9<br>
><br>
> 0x000080160c90: f9 f9 f9 f9 00 00 00 00 03 f9 f9 f9 f9 f9 f9 f9<br>
><br>
> 0x000080160ca0: 00 00 00 00 02 f9 f9 f9 f9 f9 f9 f9 00 00 00 00<br>
><br>
> 0x000080160cb0: 06 f9 f9 f9 f9 f9 f9 f9 00 00 00 00 07 f9 f9 f9<br>
><br>
> 0x000080160cc0: f9 f9 f9 f9 00 00 00 00 00 f9 f9 f9 f9 f9 f9 f9<br>
><br>
> 0x000080160cd0: 00 00 00 00 05 f9 f9 f9 f9 f9 f9 f9 00 00 00 00<br>
><br>
> Shadow byte legend (one shadow byte represents 8 application bytes):<br>
><br>
> Addressable: 00<br>
><br>
> Partially addressable: 01 02 03 04 05 06 07<br>
><br>
> Heap left redzone: fa<br>
><br>
> Freed heap region: fd<br>
><br>
> Stack left redzone: f1<br>
><br>
> Stack mid redzone: f2<br>
><br>
> Stack right redzone: f3<br>
><br>
> Stack after return: f5<br>
><br>
> Stack use after scope: f8<br>
><br>
> Global redzone: f9<br>
><br>
> Global init order: f6<br>
><br>
> Poisoned by user: f7<br>
><br>
> Container overflow: fc<br>
><br>
> Array cookie: ac<br>
><br>
> Intra object redzone: bb<br>
><br>
> ASan internal: fe<br>
><br>
> Left alloca redzone: ca<br>
><br>
> Right alloca redzone: cb<br>
><br>
> ==17619==ABORTING<br>
><br>
><br>
><br>
> Regards<br>
><br>
> Muhui<br>
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<br>
<br>
<br>
-- <br>
Alexander Potapenko<br>
Software Engineer<br>
<br>
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</blockquote></div></div>