bn/asm/rsaz-avx2.pl: fix occasional failures.

(cherry picked from commit 406d4af050cff0f52c5435504186eaf03ca69698)

diff --git a/crypto/bn/asm/rsaz-avx2.pl b/crypto/bn/asm/rsaz-avx2.pl
index bd4a6a895c16b0a31a8d6fa25ddcbd16bbfbdb91..85e1ce9115ef516c78653fa307aa8986e693f71a 100755 (executable)
--- a/crypto/bn/asm/rsaz-avx2.pl
+++ b/crypto/bn/asm/rsaz-avx2.pl
@@ -986,6 +986,7 @@ $code.=<<___;
 
        vmovdqu .Land_mask(%rip), $AND_MASK
        mov     \$9, $i
+       vmovdqu $ACC9, 32*9-128($rp)            # $ACC9 is zero after vzeroall
        jmp     .Loop_mul_1024
 
 .align 32