From: Daniel Jacobowitz <drow@false.org>
To: David Lecomber <david@allinea.com>
Cc: gdb <gdb@sources.redhat.com>
Subject: Re: ptrace PEEKTEXT IO error?!
Date: Wed, 05 Oct 2005 19:54:00 -0000 [thread overview]
Message-ID: <20051005195438.GA13350@nevyn.them.org> (raw)
In-Reply-To: <1128542780.3071.7.camel@cpc2-oxfd8-3-0-cust199.oxfd.cable.ntl.com>
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
next prev parent reply other threads:[~2005-10-05 19:54 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-05 17:10 David Lecomber
2005-10-05 17:11 ` Daniel Jacobowitz
2005-10-05 18:26 ` David Lecomber
2005-10-05 18:40 ` David Lecomber
2005-10-05 18:41 ` Daniel Jacobowitz
2005-10-05 19:50 ` David Lecomber
2005-10-05 19:54 ` Daniel Jacobowitz [this message]
2005-10-05 20:31 ` David Lecomber
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