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

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commit 47446d7cd4 upstream.

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: c50d32859e ("arm64: Add types to indirect called assembly functions")
Cc: stable@vger.kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Eric Biggers 2023-02-26 22:32:23 -08:00 • committed by Greg Kroah-Hartman

parent 4d9d2fd867

commit b952a9cf3d

1 changed files with 5 additions and 4 deletions

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arch/arm64/crypto/aes-neonbs-core.S

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