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diff --git a/sys/crypto/aesni/aesni_ghash.c b/sys/crypto/aesni/aesni_ghash.c
--- a/sys/crypto/aesni/aesni_ghash.c
+++ b/sys/crypto/aesni/aesni_ghash.c
@@ -504,9 +504,10 @@
}
tmp1 = _mm_aesenc_si128(tmp1, KEY[nr-1]);
tmp1 = _mm_aesenclast_si128(tmp1, KEY[nr]);
- tmp1 = _mm_xor_si128(tmp1,
- _mm_loadu_si128(&((const __m128i *)in)[k]));
- last_block = tmp1;
+ last_block = _mm_setzero_si128();
+ memcpy(&last_block, &((const __m128i *)in)[k],
+ nbytes % 16);
+ last_block = _mm_xor_si128(last_block, tmp1);
for (j=0; j<nbytes%16; j++)
out[k*16+j] = ((unsigned char*)&last_block)[j];
for ((void)j; j<16; j++)

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