FAILED: patch "[PATCH] crypto: sun4i-ss - checking sg length is not sufficient" failed to apply to 4.4-stable tree
[email protected]
maintainerThe patch below does not apply to the 4.4-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 7bdcd851fa7eb66e8922aa7f6cba9e2f2427a7cf Mon Sep 17 00:00:00 2001
From: Corentin Labbe <[email protected]>
Date: Mon, 14 Dec 2020 20:02:26 +0000
Subject: [PATCH] crypto: sun4i-ss - checking sg length is not sufficient
The optimized cipher function need length multiple of 4 bytes. But it get sometimes odd length.
This is due to SG data could be stored with an offset.
So the fix is to check also if the offset is aligned with 4 bytes.
Fixes 6298e948215f2 ("crypto: sunxi-ss - Add Allwinner Security System crypto accelerator")
Cc <[email protected]>
Signed-off-by Corentin Labbe <[email protected]>
Signed-off-by Herbert Xu <[email protected]>
drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c +2 -2
@@ -186,12 +186,12 @@ static int sun4i_ss_cipher_poll(struct skcipher_request *areq)* we can use the SS optimized function */ while (in_sg && no_chunk ==1 ) { -if (in_sg->length %4 ) +if ((in_sg->length | in_sg->offset) &3u ) no_chunk =0 ; in_sg =sg_next (in_sg); }while (out_sg && no_chunk ==1 ) { -if (out_sg->length %4 ) +if ((out_sg->length | out_sg->offset) &3u ) no_chunk =0 ; out_sg =sg_next (out_sg); }