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Re: ptrace PEEKTEXT IO error?!


On Wed, Oct 05, 2005 at 09:06:20PM +0100, David Lecomber wrote:
> 
> > > 
> > > It seems ok at reading memory from addresses on the heap and stack --
> > > but it barfs at reading memory from the text segment.  [snip]
> 
> > No, this is most likely a kernel bug.  This is mapped code, right, not
> > some mmaped device file (which is not generally accessible by ptrace)?
> 
> The code I'm trying to read is an ordinary subroutine in an ordinary C
> file.  The program does call a library handling infiniband network
> cards, and there are loads of kernel modules on this machine looking
> after that.  

The infiniband code does all sorts of funky things to VM.  It's
extremely likely that this is repsonsible.


-- 
Daniel Jacobowitz
CodeSourcery, LLC


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