Re: [PATCH] ptrace(2) single-stepping into signal handlers

John Blackwood
2005-06-03T18:07:54Z

> Subject: Re: [PATCH] ptrace(2) single-stepping into signal handlers
> From: Daniel Jacobowitz <dan@debian.org>
> Date: Fri, 3 Jun 2005 13:34:33 -0400
> To: John Blackwood <john.blackwood@ccur.com>
> CC: linux-kernel@vger.kernel.org, roland@redhat.com, ak@suse.de,
akpm@osdl.org, bugsy@ccur.com
>
> On Fri, Jun 03, 2005 at 01:21:20PM -0400, John Blackwood wrote:

> >> The reason for this behavior is due to the fact that:
> >>
> >> - We saved off the eflags (with the TF bit set) in setup_sigcontext()
> >> before we single stepped into the user's signal handler.
>
>
> You didn't say what kernel you were using. I believe this was fixed
> some time ago.

Hi Dan,

I observed this behavior in a 2.6.11.10 kernel. The code in 2.6.11.11
looks the same in this area... this is the i386 code that I am speaking of.

I guess that 'some time ago' is more recent than that?

If so, then please excuse me... and it's great that this is fixed.