Re: [PATCH][next] usb: host: fotg210: Use struct_size() helper in kzalloc()

[Kees Cook]

On Thu, Jan 20, 2022 at 04:20:43PM -0600, Gustavo A. R. Silva wrote:
> Make use of the struct_size() helper instead of an open-coded version,
> in order to avoid any potential type mistakes or integer overflows that,
> in the worst scenario, could lead to heap overflows.
> 
> Also, address the following sparse warnings:
> drivers/usb/host/fotg210-hcd.c:4017:20: warning: using sizeof on a flexible structure
> 
> Link: https://github.com/KSPP/linux/issues/174
> Signed-off-by: Gustavo A. R. Silva <gustavoars@xxxxxxxxxx>

Good-bye more open-coded calculations. :)

Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx>

-- 
Kees Cook