]> www.infradead.org Git - users/jedix/linux-maple.git/commit
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)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 31 Dec 2022 12:32:34 +0000 (13:32 +0100)
commit5ab743151a62df1fa393184a758bd74bfff8e128
treefe3692b0123578b0665f69f2088c438d19bb3dc3
parentff28b8afb786f262fd2cbb2de8b004f9af7807aa
crypto: x86/aegis128 - fix possible crash with CFI enabled

[ Upstream commit 8bd9974b6bfcd1e14a001deeca051aed7295559a ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
arch/x86/crypto/aegis128-aesni-asm.S