[PATCH] crypto: arm64/aes-neonbs - fix crash with CFI enabled

Herbert Xu herbert at gondor.apana.org.au
Fri Mar 10 03:30:28 PST 2023


Eric Biggers <ebiggers at kernel.org> wrote:
> From: Eric Biggers <ebiggers at google.com>
> 
> aesbs_ecb_encrypt(), aesbs_ecb_decrypt(), aesbs_xts_encrypt(), and
> aesbs_xts_decrypt() are called via indirect function calls.  Therefore
> they need to use SYM_TYPED_FUNC_START instead of SYM_FUNC_START to cause
> their type hashes to be emitted when the kernel is built with
> CONFIG_CFI_CLANG=y.  Otherwise, the code crashes with a CFI failure if
> the compiler doesn't happen to optimize out the indirect calls.
> 
> Fixes: c50d32859e70 ("arm64: Add types to indirect called assembly functions")
> Cc: stable at vger.kernel.org
> Signed-off-by: Eric Biggers <ebiggers at google.com>
> ---
> arch/arm64/crypto/aes-neonbs-core.S | 9 +++++----
> 1 file changed, 5 insertions(+), 4 deletions(-)

Patch applied.  Thanks.
-- 
Email: Herbert Xu <herbert at gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt



More information about the linux-arm-kernel mailing list