linux-kernel - Re: signals logged / [RFC] log out-of-virtual-memory events

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Date:	Mon, 21 May 2007 15:58:25 +0200 (MEST)
From:	Andrea Righi <righiandr@...rs.sourceforge.net>
To:	Folkert van Heusden <folkert@...heusden.com>
Cc:	Jan Engelhardt <jengelh@...ux01.gwdg.de>, Andi Kleen <ak@...e.de>,
	Stephen Hemminger <shemminger@...ux-foundation.org>,
	Eric Dumazet <dada1@...mosbay.com>,
	Rik van Riel <riel@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>, linux-mm@...ck.org
Subject: Re: signals logged / [RFC] log out-of-virtual-memory events

Folkert van Heusden wrote:
>>> What about the following enhancement: I check with sig_fatal if it would
>>> kill the process and only then emit a message. So when an application
>>> takes care itself of handling it nothing is printed.
>>> +	/* emit some logging for unhandled signals
>>> +	 */
>>> +	if (sig_fatal(t, sig))
>> Not unhandled_signal()?
> 
> Can we already use that one in send_signal? As the signal needs to be
> send first I think before we know if it was handled or not? sig_fatal
> checks if the handler is set to default - which is it is not taken care
> of.

What about ptrace()'d processes? I don't think we should log signals for them...

-Andrea
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