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]>
---
drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c
index b92d175b5d2a..2614640231dc 100644
--- a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c
+++ b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c
@@ -188,12 +188,12 @@ 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 % 4 || !IS_ALIGNED(in_sg->offset, sizeof(u32)))
no_chunk = 0;
in_sg = sg_next(in_sg);
}
while (out_sg && no_chunk == 1) {
- if (out_sg->length % 4)
+ if (out_sg->length % 4 || !IS_ALIGNED(out_sg->offset, sizeof(u32)))
no_chunk = 0;
out_sg = sg_next(out_sg);
}
--
2.26.2
Hi
[This is an automated email]
This commit has been processed because it contains a "Fixes:" tag
fixing commit: 6298e948215f ("crypto: sunxi-ss - Add Allwinner Security System crypto accelerator").
The bot has tested the following trees: v5.8.10, v5.4.66, v4.19.146, v4.14.198, v4.9.236, v4.4.236.
v5.8.10: Build OK!
v5.4.66: Build OK!
v4.19.146: Build OK!
v4.14.198: Build OK!
v4.9.236: Failed to apply! Possible dependencies:
a595e60a70c0 ("crypto: sun4i-ss - remove conditional checks against 0")
v4.4.236: Failed to apply! Possible dependencies:
477d9b2e591b ("crypto: sun4i-ss - unify update/final function")
a595e60a70c0 ("crypto: sun4i-ss - remove conditional checks against 0")
bfb2892018ca ("crypto: sunxi - don't print confusing data")
NOTE: The patch will not be queued to stable trees until it is upstream.
How should we proceed with this patch?
--
Thanks
Sasha