Re: [PATCH] crypto: marvell/cesa - Fix type mismatch warning

Kees Cook
2023-05-30T22:49:08Z

On Tue, 23 May 2023 10:33:04 +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
>
> Commit df8fc4e934c1 ("kbuild: Enable -fstrict-flex-arrays=3") uncovered
> a type mismatch in cesa 3des support that leads to a memcpy beyond the
> end of a structure:
>
> In function 'fortify_memcpy_chk',
> inlined from 'mv_cesa_des3_ede_setkey' at drivers/crypto/marvell/cesa/cipher.c:307:2:
> include/linux/fortify-string.h:583:25: error: call to '__write_overflow_field' declared with attribute warning: detected write beyond size of field (1st parameter); maybe use struct_group()? [-Werror=attribute-warning]
> 583 | __write_overflow_field(p_size_field, size);
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> [...]

Applied to for-next/hardening, thanks!

[1/1] crypto: marvell/cesa - Fix type mismatch warning
https://git.kernel.org/kees/c/37f3abddda8d

--
Kees Cook