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(parent: 4cc7234) | patch
led: gpio: Fix possible ZERO_SIZE_PTR pointer dereferencing error.
authorXiubo Li <Li.Xiubo@freescale.com>
Sun, 28 Sep 2014 08:57:15 +0000 (01:57 -0700)
committerBryan Wu <cooloney@gmail.com>
Mon, 29 Sep 2014 17:21:01 +0000 (10:21 -0700)
commita823e76138466225d0a9f45520c5654132939a01
tree9c0bce385e1ec06bc173502fd59fb7a7df89b6b3tree | snapshot
parent4cc72346f05ef549403d997d66fd517109e59d24commit | diff
led: gpio: Fix possible ZERO_SIZE_PTR pointer dereferencing error.

Since we cannot make sure the 'pdata->num_leds' 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: Bryan Wu <cooloney@gmail.com>
drivers/leds/leds-gpio-register.c diff | blob | history
John Crispins staging tree