From: Lars Persson <lars.persson@axis.com>
Date: Tue, 25 Aug 2015 09:59:15 +0000 (+0200)
Subject: crypto: algif_aead - fix for multiple operations on AF_ALG sockets
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=bf433416e67597ba105ece55b3136557874945db;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

crypto: algif_aead - fix for multiple operations on AF_ALG sockets

The tsgl scatterlist must be re-initialized after each
operation. Otherwise the sticky bits in the page_link will corrupt the
list with pre-mature termination or false chaining.

Signed-off-by: Lars Persson <larper@axis.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

diff --git a/crypto/algif_aead.c b/crypto/algif_aead.c
index 38a6cab7aeca..0aa6fdfb448a 100644
--- a/crypto/algif_aead.c
+++ b/crypto/algif_aead.c
@@ -90,6 +90,7 @@ static void aead_put_sgl(struct sock *sk)
 		put_page(sg_page(sg + i));
 		sg_assign_page(sg + i, NULL);
 	}
+	sg_init_table(sg, ALG_MAX_PAGES);
 	sgl->cur = 0;
 	ctx->used = 0;
 	ctx->more = 0;