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/linux/arch/x86/crypto/ |
H A D | sha1_ni_asm.S | diff 32f34bf7e44eeaa241fb845d6f52af5104bc30fd Fri Nov 18 20:44:13 CET 2022 Eric Biggers <ebiggers@google.com> crypto: x86/sha1 - fix possible crash with CFI enabled
sha1_transform_ssse3(), sha1_transform_avx(), and sha1_ni_transform() (but not sha1_transform_avx2()) 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>
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H A D | sha1_ssse3_asm.S | diff 32f34bf7e44eeaa241fb845d6f52af5104bc30fd Fri Nov 18 20:44:13 CET 2022 Eric Biggers <ebiggers@google.com> crypto: x86/sha1 - fix possible crash with CFI enabled
sha1_transform_ssse3(), sha1_transform_avx(), and sha1_ni_transform() (but not sha1_transform_avx2()) 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>
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