linux-kernel - Re: v3.4-rc2 out-of-memory problems (was Re: 3.4-rc1 sticks-and-crashs)

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Message-ID: <CA+55aFy2zh0BHvNYfUXvOaWWvagrKDrFy4DvTtPNjO7nS2G9Tw@mail.gmail.com>
Date:	Sat, 14 Apr 2012 14:03:08 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	werner <w.landgraf@...ru>
Cc:	David Rientjes <rientjes@...gle.com>,
	Colin Cross <ccross@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Rik van Riel <riel@...hat.com>,
	Hugh Dickins <hughd@...gle.com>, linux-kernel@...r.kernel.org,
	Oleg Nesterov <oleg@...hat.com>,
	Rabin Vincent <rabin.vincent@...ricsson.com>,
	Christian Bejram <christian.bejram@...ricsson.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Anton Vorontsov <anton.vorontsov@...aro.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org
Subject: Re: v3.4-rc2 out-of-memory problems (was Re: 3.4-rc1 sticks-and-crashs)

On Sat, Apr 14, 2012 at 12:38 PM, werner <w.landgraf@...ru> wrote:
>
> I observed that then always kmemleak is almost at the beginning of top

Just disable CONFIG_DEBUG_KMEMLEAK.

You do realize that it's a pure debugging aid - akin to
CONFIG_DEBUG_PAGEALLOC - that is *not* meant to be run on production
systems. Exactly because it is very expensive. It basically scans all
the kernel areas for pointers and tries to find leaks.

                 Linus
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