[Valgrind-users] unhandled instruction bytes..

[Rob K. <ro...@st...>]

Hi there,

I'm trying to run valgrind on my program, but it dies. Output is included 
below. At one point it outputs: 'disInstr: unhandled instruction bytes: 0x66 
0x6 0x8B 0x55'. Perhaps this is mmx/sse code? How can I find in what object 
the offending code is? If this code is what makes it crash in the first 
place...

Cheers!

   Rob


[rob] ~/work/mn++> valgrind -v mnshow
==3395== Memcheck, a.k.a. Valgrind, a memory error detector for x86-linux.
==3395== Copyright (C) 2002-2003, and GNU GPL'd, by Julian Seward.
==3395== Using valgrind-20030716, a program supervision framework for 
x86-linux.
==3395== Copyright (C) 2000-2003, and GNU GPL'd, by Julian Seward.
==3395== Startup, with flags:
==3395==    --suppressions=/usr/local/lib/valgrind/default.supp
==3395==    -v
==3395== Reading syms from /home/rob/work/mn++/mnshow
==3395== Reading syms from /usr/local/lib/valgrind/vgskin_memcheck.so
==3395== Reading syms from /usr/local/lib/valgrind/valgrind.so
==3395== Reading syms from /usr/il/lib/libesso++.1.0.so
==3395== Reading syms from /usr/il/lib/libesmx++.3.0.so
==3395== Reading syms from /usr/il/lib/esqc.so
==3395==    object doesn't have a symbol table
==3395==    object doesn't have any debug info
==3395== Reading syms from /usr/il/lib/esmx.so
==3395==    object doesn't have a symbol table
==3395==    object doesn't have any debug info
==3395== Reading syms from /usr/il/lib/esini.so
==3395==    object doesn't have a symbol table
==3395==    object doesn't have any debug info
==3395== Reading syms from /usr/local/lib/liballeg-4.0.1.so
==3395==    object doesn't have a symbol table
==3395==    object doesn't have any debug info
==3395== Reading syms from /usr/lib/libstdc++.so.5.0.3
==3395== Reading syms from /lib/libgcc_s.so.1
==3395== Reading syms from /lib/ld-2.3.2.so
==3395==    object doesn't have any debug info
==3395== Reading syms from /lib/libc.so.6
==3395==    object doesn't have any debug info
==3395== Reading syms from /lib/libdl.so.2
==3395==    object doesn't have any debug info
==3395== Reading syms from /lib/libm.so.6
==3395==    object doesn't have any debug info
==3395== Reading syms from /usr/X11R6/lib/libX11.so.6.2
==3395==    object doesn't have any debug info
==3395== Reading syms from /usr/X11R6/lib/libXext.so.6.4
==3395==    object doesn't have any debug info
==3395== Reading syms from /usr/lib/libjpeg.so.62.0.0
==3395==    object doesn't have any debug info
==3395== Reading syms from /usr/lib/libttf.so.2.2.0
==3395==    object doesn't have any debug info
==3395== Reading suppressions file: /usr/local/lib/valgrind/default.supp
==3395== Estimated CPU clock rate is 1701 MHz
==3395==
mnshow 4.9.0 (C) Copyright 2000-2003 Infologic Pte Ltd, Singapore.

==3395== Reading syms from /usr/X11R6/lib/libXcursor.so.1.0
==3395==    object doesn't have any debug info
==3395== Reading syms from /usr/X11R6/lib/libXrender.so.1.2
==3395==    object doesn't have any debug info
==3395== Syscall param writev(vector[...]) contains uninitialised or 
unaddressable byte(s)
==3395==    at 0x4016C77B: vgAllRoadsLeadToRome_writev (vg_intercept.c:108)
==3395==    by 0x4016C7B7: __writev (vg_intercept.c:732)
==3395==    by 0x411CBF3D: _X11TransSocketWritev (in 
/usr/X11R6/lib/libX11.so.6.2)
==3395==    by 0x411CCB5E: _X11TransWritev (in /usr/X11R6/lib/libX11.so.6.2)
==3395==    Address 0x41D51674 is 136 bytes inside a block of size 2048 
alloc'd
==3395==    at 0x40013A7E: calloc (vg_replace_malloc.c:273)
==3395==    by 0x4119C736: XOpenDisplay (in /usr/X11R6/lib/libX11.so.6.2)
==3395==    by 0x402DA47C: (within /usr/local/lib/liballeg-4.0.1.so)
==3395== Reading syms from /usr/X11R6/lib/X11/locale/lib/common/xlcDef.so.2
disInstr: unhandled instruction bytes: 0x66 0x6 0x8B 0x55
==3395==
==3395== Syscall param write(buf) contains uninitialised or unaddressable 
byte(s)
==3395==    at 0x410E8BE8: __GI___libc_write (in /lib/libc.so.6)
==3395==    by 0x411CCAFE: _X11TransWrite (in /usr/X11R6/lib/libX11.so.6.2)
==3395==    by 0x411AB663: _XFlushInt (in /usr/X11R6/lib/libX11.so.6.2)
==3395==    by 0x411ACD9E: _XReply (in /usr/X11R6/lib/libX11.so.6.2)
==3395==    Address 0x41D51676 is 138 bytes inside a block of size 2048 
alloc'd
==3395==    at 0x40013A7E: calloc (vg_replace_malloc.c:273)
==3395==    by 0x4119C736: XOpenDisplay (in /usr/X11R6/lib/libX11.so.6.2)
==3395==    by 0x402DA47C: (within /usr/local/lib/liballeg-4.0.1.so)
-=Fatal exception caught, shutting down MN kernel [3.13]=-

Illegal instruction (core dumped)