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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