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crypto: x86 - Add missing RETs 

Add explicit RETs to the tail calls of AEGIS and MORUS crypto algorithms
otherwise they run into INT3 padding due to

  ("x86/asm: Pad assembly functions with INT3 instructions")

leading to spurious debug exceptions.

Mike Galbraith <efault@gmx.de> took care of all the remaining callsites.

Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Ondrej Mosnacek <omosnacek@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
hifive-unleashed-5.1
Borislav Petkov 2018-06-23 12:36:22 +02:00 committed by Herbert Xu
parent a068b94d74
commit 221e00d1fc
6 changed files with 6 additions and 0 deletions
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1
arch/x86/crypto/aegis128-aesni-asm.S
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@ -535,6 +535,7 @@ ENTRY(crypto_aegis128_aesni_enc_tail)
movdqu STATE3, 0x40(STATEP)
FRAME_END
ret
ENDPROC(crypto_aegis128_aesni_enc_tail)
.macro decrypt_block a s0 s1 s2 s3 s4 i

1
arch/x86/crypto/aegis128l-aesni-asm.S
View File

@ -645,6 +645,7 @@ ENTRY(crypto_aegis128l_aesni_enc_tail)
state_store0
FRAME_END
ret
ENDPROC(crypto_aegis128l_aesni_enc_tail)
/*

1
arch/x86/crypto/aegis256-aesni-asm.S
View File

@ -543,6 +543,7 @@ ENTRY(crypto_aegis256_aesni_enc_tail)
state_store0
FRAME_END
ret
ENDPROC(crypto_aegis256_aesni_enc_tail)
/*

1
arch/x86/crypto/morus1280-avx2-asm.S
View File

@ -453,6 +453,7 @@ ENTRY(crypto_morus1280_avx2_enc_tail)
vmovdqu STATE4, (4 * 32)(%rdi)
FRAME_END
ret
ENDPROC(crypto_morus1280_avx2_enc_tail)
/*

1
arch/x86/crypto/morus1280-sse2-asm.S
View File

@ -652,6 +652,7 @@ ENTRY(crypto_morus1280_sse2_enc_tail)
movdqu STATE4_HI, (9 * 16)(%rdi)
FRAME_END
ret
ENDPROC(crypto_morus1280_sse2_enc_tail)
/*

1
arch/x86/crypto/morus640-sse2-asm.S
View File

@ -437,6 +437,7 @@ ENTRY(crypto_morus640_sse2_enc_tail)
movdqu STATE4, (4 * 16)(%rdi)
FRAME_END
ret
ENDPROC(crypto_morus640_sse2_enc_tail)
/*