[4.2.y-ckt stable] Patch "crypto: algif_skcipher - Load TX SG list after waiting" has been added to the 4.2.y-ckt tree
Kamal Mostafa
kamal at canonical.com
Wed Jan 27 00:12:55 UTC 2016
This is a note to let you know that I have just added a patch titled
crypto: algif_skcipher - Load TX SG list after waiting
to the linux-4.2.y-queue branch of the 4.2.y-ckt extended stable tree
which can be found at:
http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-4.2.y-queue
This patch is scheduled to be released in version 4.2.8-ckt3.
If you, or anyone else, feels it should not be added to this tree, please
reply to this email.
For more information about the 4.2.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable
Thanks.
-Kamal
---8<------------------------------------------------------------
>From cf87aa5c38ee4d63da85229126d44536a694ab7f Mon Sep 17 00:00:00 2001
From: Herbert Xu <herbert at gondor.apana.org.au>
Date: Mon, 18 Jan 2016 18:46:10 +0800
Subject: crypto: algif_skcipher - Load TX SG list after waiting
commit 4f0414e54e4d1893c6f08260693f8ef84c929293 upstream.
We need to load the TX SG list in sendmsg(2) after waiting for
incoming data, not before.
Reported-by: Dmitry Vyukov <dvyukov at google.com>
Signed-off-by: Herbert Xu <herbert at gondor.apana.org.au>
Tested-by: Dmitry Vyukov <dvyukov at google.com>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
crypto/algif_skcipher.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c
index 74ffe56..1a0fe4f 100644
--- a/crypto/algif_skcipher.c
+++ b/crypto/algif_skcipher.c
@@ -647,13 +647,6 @@ static int skcipher_recvmsg_sync(struct socket *sock, struct msghdr *msg,
lock_sock(sk);
while (msg_data_left(msg)) {
- sgl = list_first_entry(&ctx->tsgl,
- struct skcipher_sg_list, list);
- sg = sgl->sg;
-
- while (!sg->length)
- sg++;
-
if (!ctx->used) {
err = skcipher_wait_for_data(sk, flags);
if (err)
@@ -674,6 +667,13 @@ static int skcipher_recvmsg_sync(struct socket *sock, struct msghdr *msg,
if (!used)
goto free;
+ sgl = list_first_entry(&ctx->tsgl,
+ struct skcipher_sg_list, list);
+ sg = sgl->sg;
+
+ while (!sg->length)
+ sg++;
+
ablkcipher_request_set_crypt(&ctx->req, sg,
ctx->rsgl.sg, used,
ctx->iv);
--
1.9.1
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