linux-kernel - Re: x86: do_debug && PTRACE_SINGLESTEP broken by 08d68323d1f0c34452e614263b212ca556dae47f

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Message-ID: <20091218030915.GC16470@nowhere>
Date:	Fri, 18 Dec 2009 04:09:17 +0100
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Oleg Nesterov <oleg@...hat.com>
Cc:	Roland McGrath <roland@...hat.com>,
	"K.Prasad" <prasad@...ux.vnet.ibm.com>,
	Alan Stern <stern@...land.harvard.edu>,
	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	utrace-devel@...hat.com
Subject: Re: x86: do_debug && PTRACE_SINGLESTEP broken by
	08d68323d1f0c34452e614263b212ca556dae47f

On Fri, Dec 18, 2009 at 03:58:09AM +0100, Frederic Weisbecker wrote:
> Yep, that doesn't fix your problem but this patch makes sense
> in that if we were not in user mode while the step occured,
> we shouldn't send the signal.


That wouldn't happen actually, as we clear the STEP flag before. 

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