linux-kernel - Re: 2.6.39-rc4+: Kernel leaking memory during FS scanning, regression?

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Message-Id: <201104252121.GJI30713.FMOQLFOSVFtJOH@I-love.SAKURA.ne.jp>
Date:	Mon, 25 Apr 2011 21:21:51 +0900
From:	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To:	penberg@...nel.org, bonbons@...ux-vserver.org
Cc:	vapier.adi@...il.com, kosaki.motohiro@...fujitsu.com,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	linux-fsdevel@...r.kernel.org, catalin.marinas@....com,
	adobriyan@...il.com, torvalds@...ux-foundation.org,
	viro@...iv.linux.org.uk
Subject: Re: 2.6.39-rc4+: Kernel leaking memory during FS scanning, regression?

Tetsuo Handa wrote:
> proc_pid_make_inode() gets a ref on task, but return value of pid_revalidate()
> (one of 0, 1, -ECHILD) may not be what above 'if (pid_revalidate(dentry, NULL))'
> part expects. (-ECHILD is a new return value introduced by LOOKUP_RCU.)
Sorry, nd == NULL so never returns -ECHILD.
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