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| author | Eric Biggers <ebiggers@google.com> | 2022-11-18 11:44:10 -0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2022-11-25 17:39:18 +0800 |
| commit | 8bd9974b6bfcd1e14a001deeca051aed7295559a (patch) | |
| tree | 497f27ea145ad85a1201ad1cc2bb2343abf5140a /arch/x86/crypto | |
| parent | 57ddfecc72a6c9941d159543e1c0c0a74fe9afdd (diff) | |
| download | linux-8bd9974b6bfcd1e14a001deeca051aed7295559a.tar.bz2 | |
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>
Diffstat (limited to 'arch/x86/crypto')
| -rw-r--r-- | arch/x86/crypto/aegis128-aesni-asm.S | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/x86/crypto/aegis128-aesni-asm.S b/arch/x86/crypto/aegis128-aesni-asm.S index b48ddebb4748..cdf3215ec272 100644 --- a/arch/x86/crypto/aegis128-aesni-asm.S +++ b/arch/x86/crypto/aegis128-aesni-asm.S @@ -7,6 +7,7 @@ */ #include <linux/linkage.h> +#include <linux/cfi_types.h> #include <asm/frame.h> #define STATE0 %xmm0 @@ -402,7 +403,7 @@ SYM_FUNC_END(crypto_aegis128_aesni_ad) * void crypto_aegis128_aesni_enc(void *state, unsigned int length, * const void *src, void *dst); */ -SYM_FUNC_START(crypto_aegis128_aesni_enc) +SYM_TYPED_FUNC_START(crypto_aegis128_aesni_enc) FRAME_BEGIN cmp $0x10, LEN @@ -499,7 +500,7 @@ SYM_FUNC_END(crypto_aegis128_aesni_enc) * void crypto_aegis128_aesni_enc_tail(void *state, unsigned int length, * const void *src, void *dst); */ -SYM_FUNC_START(crypto_aegis128_aesni_enc_tail) +SYM_TYPED_FUNC_START(crypto_aegis128_aesni_enc_tail) FRAME_BEGIN /* load the state: */ @@ -556,7 +557,7 @@ SYM_FUNC_END(crypto_aegis128_aesni_enc_tail) * void crypto_aegis128_aesni_dec(void *state, unsigned int length, * const void *src, void *dst); */ -SYM_FUNC_START(crypto_aegis128_aesni_dec) +SYM_TYPED_FUNC_START(crypto_aegis128_aesni_dec) FRAME_BEGIN cmp $0x10, LEN @@ -653,7 +654,7 @@ SYM_FUNC_END(crypto_aegis128_aesni_dec) * void crypto_aegis128_aesni_dec_tail(void *state, unsigned int length, * const void *src, void *dst); */ -SYM_FUNC_START(crypto_aegis128_aesni_dec_tail) +SYM_TYPED_FUNC_START(crypto_aegis128_aesni_dec_tail) FRAME_BEGIN /* load the state: */ |