Re: [PATCH] x86/sgx: Return -EINVAL on a zero length buffer in sgx_ioc_enclave_add_pages()

[Dan Carpenter]

On Thu, Dec 03, 2020 at 08:35:27PM +0200, Jarkko Sakkinen wrote:
> The length documented as
> 
>  * @length:     length of the data (multiple of the page size)
> 
> Fail with -EINVAL, when user gives a zero length buffer. Right now
> 'ret' is returned as uninitialized.
> 
> Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
> Cc: Borislav Petkov <bp@xxxxxxxxx>
> Link: https://lore.kernel.org/linux-sgx/X8ehQssnslm194ld@mwanda/ 
> Fixes: c6d26d370767 ("x86/sgx: Add SGX_IOC_ENCLAVE_ADD_PAGES")
> Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> Signed-off-by: Jarkko Sakkinen <jarkko@xxxxxxxxxx>

Acked-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

regards,
dan carpenter