On Wed, 2012-12-05 at 11:57 -0800, John Reiser wrote:
> On 12/05/2012 09:18 AM, Simon Bonello wrote:
> > I am trying to track a memory leak in a vmware service and I tried to use 
> > valgrind to track the leak. Unfortunately it is stopping for the following 
> > instruction.
> > 
> > vex x86->IR:unhandled instruction bytes:0xF 0xB 0xFF 0x85
> > 
> > I am using a busybox 1.20.0.||Help would be highly appreciated.

> 
> 
> Use plain text for posting, not HTML.
> 
> Which version of valgrind?  What was the shell command that you invoked
> in order to get the error?
> 
> "0x0f 0x0b" is 'ud2', the blessed-by-Intel opcode for "undefined instruction."
> It means that the compiler's code generator thought that it was impossible
> to get to that point.  The cause of the "real" error happened some time ago.
> So look at the traceback, or sometimes even farther back than that.
> (Is the traceback from glibc, uClibc, or the app itself?)
> 


You might also look at thread
http://comments.gmane.org/gmane.comp.debugging.valgrind.devel/17911

which speaks about specific vmware stuff and how it was finally 
supported (without patch in Valgrind, instead using client requests).

Philippe



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