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Commit cbe09bd5 authored by Eli Cooper's avatar Eli Cooper Committed by Herbert Xu
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crypto: chacha20-ssse3 - Align stack pointer to 64 bytes 



This aligns the stack pointer in chacha20_4block_xor_ssse3 to 64 bytes.
Fixes general protection faults and potential kernel panics.

Cc: stable@vger.kernel.org
Signed-off-by: default avatarEli Cooper <elicooper@gmx.com>
Acked-by: default avatarMartin Willi <martin@strongswan.org>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 7ee7014d

arch/x86/crypto/chacha20-ssse3-x86_64.S

+4 −2
Original line number Diff line number Diff line
@@ -157,7 +157,9 @@ ENTRY(chacha20_4block_xor_ssse3) 
	# done with the slightly better performing SSSE3 byte shuffling,

	# 7/12-bit word rotation uses traditional shift+OR.



	sub		$0x40,%rsp

	mov		%rsp,%r11

	sub		$0x80,%rsp

	and		$~63,%rsp



	# x0..15[0-3] = s0..3[0..3]

	movq		0x00(%rdi),%xmm1
@@ -620,6 +622,6 @@ ENTRY(chacha20_4block_xor_ssse3) 
	pxor		%xmm1,%xmm15

	movdqu		%xmm15,0xf0(%rsi)



	add		$0x40,%rsp

	mov		%r11,%rsp

	ret

ENDPROC(chacha20_4block_xor_ssse3)