Date: Fri, 23 Sep 2005 17:11:14 -0700
From: Arun Sharma <arun.sharma@google.com>
To: linux-kernel@vger.kernel.org, roland@redhat.com, akpm@osdl.org
Subject: Re: [PATCH] POSIX timers SMP race condition
Message-ID: <20050924001114.GA16682@sharma-home.net>
References: <20050923225444.GB13502@sharma-home.net>
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On Fri, Sep 23, 2005 at 03:54:44PM -0700, Arun Sharma wrote:
> -			if (!unlikely(t->exit_state)) {
> +			if (!unlikely(t->flags & PF_EXITING)) {

I just had this problem happen again, after the patch. It looks like we
need to cover other unguarded assignments to tsk->it_prof_expires,
which could possibly race with do_exit().

Or just check for PF_EXITING in run_posix_cpu_timers() and return.

	-Arun
-
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