From: Pekka Enberg <penberg@cs.helsinki.fi>
To: Catalin Marinas <catalin.marinas@arm.com>
Cc: linux-kernel@vger.kernel.org, Vegard Nossum <vegardno@ifi.uio.no>,
Andrew Morton <akpm@linux-foundation.org>,
Christian Casteyde <casteyde.christian@free.fr>
Subject: Re: [PATCH] kmemcheck: Test the full object in kmemcheck_is_obj_initialized()
Date: Wed, 17 Feb 2010 21:39:20 +0200 [thread overview]
Message-ID: <4B7C45E8.80402@cs.helsinki.fi> (raw)
In-Reply-To: <20100208111624.5387.37948.stgit@pc1117.cambridge.arm.com>
Catalin Marinas wrote:
> This is a fix for bug #14845 (bugzilla.kernel.org). The
> update_checksum() function in mm/kmemleak.c calls
> kmemcheck_is_obj_initialised() before scanning an object. When
> KMEMCHECK_PARTIAL_OK is enabled, this function returns true. However,
> the crc32_le() reads smaller intervals (32-bit) for which
> kmemleak_is_obj_initialised() may be false leading to a kmemcheck
> warning.
>
> Note that kmemcheck_is_obj_initialized() is currently only used by
> kmemleak before scanning a memory location.
>
> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: Christian Casteyde <casteyde.christian@free.fr>
> Cc: Pekka Enberg <penberg@cs.helsinki.fi>
> Cc: Vegard Nossum <vegardno@ifi.uio.no>
Applied to slab.git.
prev parent reply other threads:[~2010-02-17 19:39 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-08 11:16 Catalin Marinas
2010-02-08 12:54 ` Pekka Enberg
2010-02-08 12:58 ` Catalin Marinas
2010-02-08 13:03 ` Pekka Enberg
2010-02-08 14:38 ` roel kluin
2010-02-08 15:27 ` Catalin Marinas
2010-02-17 19:39 ` Pekka Enberg [this message]
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