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List:       kde-bugs-dist
Subject:    [valgrind] [Bug 310845] Application being checked generates illegal instruction
From:       Alan Wild <alan () madllama ! net>
Date:       2013-12-16 20:43:38
Message-ID: bug-310845-17878-Bjf97xqnSF () http ! bugs ! kde ! org/
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https://bugs.kde.org/show_bug.cgi?id=310845

Alan Wild <alan@madllama.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |alan@madllama.net

--- Comment #16 from Alan Wild <alan@madllama.net> ---
I just hit this same bug today in valgrind 3.9.  I added the same imm8 codes
and that got me past the __intel_sse4_strrchr call only to have it die in
__intel_sse4_strspn.  Using the same objdump trick I found calls to pcmpistrm
with a value of 0x72.

[arwild1@hplcslsp1 ~]$ /apps_hpc/GCC/gcc-4.7.2/bin/objdump -t
/apps_hpc/intel/composer_xe_2013.3.163/compiler/lib/intel64/libintlc.so.5 |
egrep __intel_sse4_strspn
00000000000209e0 g     F .text  0000000000000310 __intel_sse4_strspn
[arwild1@hplcslsp1 ~]$ /apps_hpc/GCC/gcc-4.7.2/bin/objdump -d -f
--start-address=0x00000000000209e0 --stop-address=0x0000000000020cf0
/apps_hpc/intel/composer_xe_2013.3.163/compiler/lib/intel64/libintlc.so.5 |
egrep pcmp
   20a7b:       66 0f 74 c8             pcmpeqb %xmm0,%xmm1
   20c41:       66 0f 3a 62 d1 72       pcmpistrm $0x72,%xmm1,%xmm2
   20c70:       66 0f 3a 62 e1 72       pcmpistrm $0x72,%xmm1,%xmm4
   20c99:       66 0f 3a 63 c9 3a       pcmpistri $0x3a,%xmm1,%xmm1

(NOTE: 0x3a is already handled in the above source files).

After adding 0x72 to the same two files I was able to run without error.  I'll
attach my diff against 3.9.0 below.

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