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29adeb4f95
One of the more common cases of allocation size calculations is finding
the size of a structure that has a zero-sized array at the end, along
with memory for some number of elements for that array. For example:
struct foo {
int stuff;
void *entry[];
};
instance = devm_kzalloc(dev, sizeof(struct foo) + sizeof(void *) * count, GFP_KERNEL);
or, like in this particular case:
size = sizeof(struct foo) + sizeof(void *) * count;
instance = devm_kzalloc(dev, size, GFP_KERNEL);
Instead of leaving these open-coded and prone to type mistakes, we can
now use the new struct_size() helper:
instance = devm_kzalloc(dev, struct_size(instance, entry, count),
GFP_KERNEL);
This issue was detected with the help of Coccinelle.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20180826184712.GA9330@embeddedor.com
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| .. | ||
| analogix_dp-rockchip.c | ||
| cdn-dp-core.c | ||
| cdn-dp-core.h | ||
| cdn-dp-reg.c | ||
| cdn-dp-reg.h | ||
| dw_hdmi-rockchip.c | ||
| dw-mipi-dsi.c | ||
| inno_hdmi.c | ||
| inno_hdmi.h | ||
| Kconfig | ||
| Makefile | ||
| rockchip_drm_drv.c | ||
| rockchip_drm_drv.h | ||
| rockchip_drm_fb.c | ||
| rockchip_drm_fb.h | ||
| rockchip_drm_fbdev.c | ||
| rockchip_drm_fbdev.h | ||
| rockchip_drm_gem.c | ||
| rockchip_drm_gem.h | ||
| rockchip_drm_psr.c | ||
| rockchip_drm_psr.h | ||
| rockchip_drm_vop.c | ||
| rockchip_drm_vop.h | ||
| rockchip_lvds.c | ||
| rockchip_lvds.h | ||
| rockchip_vop_reg.c | ||
| rockchip_vop_reg.h | ||