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(parent: 5336be8) | patch
regmap: fix possible ZERO_SIZE_PTR pointer dereferencing error.
authorXiubo Li <Li.Xiubo@freescale.com>
Sun, 28 Sep 2014 09:09:54 +0000 (17:09 +0800)
committerMark Brown <broonie@kernel.org>
Sun, 28 Sep 2014 10:55:07 +0000 (11:55 +0100)
commitd6b41cb06044a7d895db82bdd54f6e4219970510
treea3dc551bd4d54b98fc4cf58b2f90cba92aeef63ctree | snapshot (tar.gz zip)
parent5336be8416a71b5568d2cf54a2f2066abe9f2a53commit | diff
regmap: fix possible ZERO_SIZE_PTR pointer dereferencing error.

Since we cannot make sure the 'val_count' will always be none zero
here, and then if it equals to zero, the kmemdup() will return
ZERO_SIZE_PTR, which equals to ((void *)16).

So this patch fix this with just doing the zero check before calling
kmemdup().

Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
drivers/base/regmap/regmap.c diff | blob | blame | history