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(parent: 7d1311b) | patch
ASoC: core: fix possible ZERO_SIZE_PTR pointer dereferencing error.
authorXiubo Li <Li.Xiubo@freescale.com>
Sun, 28 Sep 2014 09:29:37 +0000 (17:29 +0800)
committerMark Brown <broonie@kernel.org>
Sun, 28 Sep 2014 10:49:42 +0000 (11:49 +0100)
commit6596aa047b624aeec2ea321962cfdecf9953a383
treeb9173cd495e9f4a80c97d2094d4e1d2f2e2df327tree | snapshot (tar.gz zip)
parent7d1311b93e58ed55f3a31cc8f94c4b8fe988a2b9commit | diff
ASoC: core: fix possible ZERO_SIZE_PTR pointer dereferencing error.

Since we cannot make sure the 'params->num_regs' 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
sound/soc/soc-core.c diff | blob | blame | history