Thread (3 messages) 3 messages, 3 authors, 2023-03-10

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

From: Herbert Xu <herbert@gondor.apana.org.au>
Date: 2023-03-10 11:30:53
Also in: linux-crypto, stable

Eric Biggers [off-list ref] wrote:
From: Eric Biggers <redacted>

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@vger.kernel.org
Signed-off-by: Eric Biggers <redacted>
---
arch/arm64/crypto/aes-neonbs-core.S | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
Patch applied.  Thanks.
-- 
Email: Herbert Xu [off-list ref]
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt

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