crypto: x86/aegis128 - fix possible crash with CFI enabled
authorEric Biggers <ebiggers@google.com>
Fri, 18 Nov 2022 19:44:10 +0000 (11:44 -0800)
committerHerbert Xu <herbert@gondor.apana.org.au>
Fri, 25 Nov 2022 09:39:18 +0000 (17:39 +0800)
commit8bd9974b6bfcd1e14a001deeca051aed7295559a
tree497f27ea145ad85a1201ad1cc2bb2343abf5140a
parent57ddfecc72a6c9941d159543e1c0c0a74fe9afdd
crypto: x86/aegis128 - fix possible crash with CFI enabled

crypto_aegis128_aesni_enc(), crypto_aegis128_aesni_enc_tail(),
crypto_aegis128_aesni_dec(), and crypto_aegis128_aesni_dec_tail() 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 didn't
happen to optimize out the indirect calls).

Fixes: ccace936eec7 ("x86: Add types to indirectly 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>
arch/x86/crypto/aegis128-aesni-asm.S