gdb/2171: No backtrace generated on amd64

Daniel Jacobowitz
Mon Sep 18 13:58:00 GMT 2006

The following reply was made to PR gdb/2171; it has been noted by GNATS.

From: Daniel Jacobowitz <>
To: Joe Hansche <>
Subject: Re: gdb/2171: No backtrace generated on amd64
Date: Mon, 18 Sep 2006 09:49:19 -0400

 On Mon, Sep 18, 2006 at 06:21:40AM -0600, Joe Hansche wrote:
 > I've upgraded to kernel version 2.6.17, with the same results (after
 > recompiling both gdb and php).  I tried looking through the kernel
 > .config to see what might cause something like this.  The only thing I
 > ended up changing, aside from the defaults in the new kernel, was
 > changing the memory model from Discontiguous to Sparse.
 > Any more ideas?  Or since you are saying it looks like a kernel
 > problem, where should I look for more information on this?
 Sorry, I'm stumped.  Do you want to try sending me the php binary and
 core file, compressed?  If it's too large I can give you an FTP site
 to upload them to.  Please don't try sending anything that large to the
 lists or bug tracker, though.
 Daniel Jacobowitz

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