linux-kernel - Re: [PATCH 1/5] signal(x86_32): Improve the signal stack overflow check

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Message-ID: <47BB8F05.3050001@cn.fujitsu.com>
Date:	Wed, 20 Feb 2008 10:23:01 +0800
From:	Shi Weihua <shiwh@...fujitsu.com>
To:	Roland McGrath <roland@...hat.com>
CC:	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH 1/5] signal(x86_32): Improve the signal stack overflow
 check

Roland McGrath wrote::
>> You mean the comment?
> 
> No, that is trivial and already corrected.  I mean the substance of your
> most recent patch.  I described why I think it is wrong.  You did not respond.

I spent some time read you mail carefully and dig into the code again.

And yes, you are right. It's possible that SA_ONSTACK has been cleared
before the second signal on the same stack comes.

So this patch is wrong  :( . I will revise the other 4 patches.

Sorry for the noise.

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