crypto: arm64/sm3 - fix possible crash with CFI enabled

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sm3_neon_transform() is called via indirect function calls.  Therefore
it needs to use SYM_TYPED_FUNC_START instead of SYM_FUNC_START to cause
its type hash to be emitted when the kernel is built with
CONFIG_CFI_CLANG=y.  Otherwise, the code crashes with a CFI failure (if
the compiler didn't happen to optimize out the indirect call).

Fixes: c50d32859e ("arm64: Add types to indirect called assembly functions")
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

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Eric Biggers 2022-11-18 11:44:19 -08:00 • committed by Herbert Xu

parent e5e1c67e2f

commit be8f6b6496

1 changed files with 2 additions and 1 deletions

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arch/arm64/crypto/sm3-neon-core.S

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