linux-kernel - Re: init's children list is long and slows reaping children.

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Message-ID: <4616B678.1050202@zytor.com>
Date:	Fri, 06 Apr 2007 14:07:04 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
CC:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Oleg Nesterov <oleg@...sign.ru>, Robin Holt <holt@....com>,
	Chris Snook <csnook@...hat.com>, Ingo Molnar <mingo@...e.hu>,
	linux-kernel@...r.kernel.org
Subject: Re: init's children list is long and slows reaping children.

Jeremy Fitzhardinge wrote:
> Eric W. Biederman wrote:
>> I'm guessing the issue is nash just calls wait and doesn't check the
>> returned pid value, assuming it is the only child it forked returning.
>> Which is valid except when you are running as pid == 1.
>>   
> 
> Hm, that's always a bug; a process can always have children it doesn't
> expect (think forking, and then the parent execs).
> 

Not if the process already forked.

But yes, in general this is a major screwup.

	-hpa
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