Patch "crypto: algif_skcipher - Load TX SG list after waiting" has been added to the 4.4-stable tree

[<gregkh@linuxfoundation.org>]

This is a note to let you know that I've just added the patch titled

    crypto: algif_skcipher - Load TX SG list after waiting

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     crypto-algif_skcipher-load-tx-sg-list-after-waiting.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 4f0414e54e4d1893c6f08260693f8ef84c929293 Mon Sep 17 00:00:00 2001
From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Mon, 18 Jan 2016 18:46:10 +0800
Subject: crypto: algif_skcipher - Load TX SG list after waiting

From: Herbert Xu <herbert@gondor.apana.org.au>

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@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Tested-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 crypto/algif_skcipher.c |   14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

--- a/crypto/algif_skcipher.c
+++ b/crypto/algif_skcipher.c
@@ -647,13 +647,6 @@ static int skcipher_recvmsg_sync(struct
 
 	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
 		if (!used)
 			goto free;
 
+		sgl = list_first_entry(&ctx->tsgl,
+				       struct skcipher_sg_list, list);
+		sg = sgl->sg;
+
+		while (!sg->length)
+			sg++;
+
 		skcipher_request_set_crypt(&ctx->req, sg, ctx->rsgl.sg, used,
 					   ctx->iv);
 


Patches currently in stable-queue which might be from herbert@gondor.apana.org.au are

queue-4.4/crypto-af_alg-disallow-bind-setkey-...-after-accept-2.patch
queue-4.4/crypto-crc32c-fix-crc32c-soft-dependency.patch
queue-4.4/crypto-af_alg-forbid-bind-2-when-nokey-child-sockets-are-present.patch
queue-4.4/crypto-algif_hash-fix-race-condition-in-hash_check_key.patch
queue-4.4/crypto-skcipher-add-crypto_skcipher_has_setkey.patch
queue-4.4/crypto-chacha20-ssse3-align-stack-pointer-to-64-bytes.patch
queue-4.4/crypto-algif_skcipher-add-key-check-exception-for-cipher_null.patch
queue-4.4/crypto-algif_hash-remove-custom-release-parent-function.patch
queue-4.4/crypto-algif_skcipher-load-tx-sg-list-after-waiting.patch
queue-4.4/crypto-algif_skcipher-require-setkey-before-accept-2.patch
queue-4.4/crypto-algif_skcipher-add-nokey-compatibility-path.patch
queue-4.4/crypto-shash-fix-has_key-setting.patch
queue-4.4/crypto-algif_skcipher-remove-custom-release-parent-function.patch
queue-4.4/crypto-af_alg-allow-af_af_alg_release_parent-to-be-called-on-nokey-path.patch
queue-4.4/crypto-hash-add-crypto_ahash_has_setkey.patch
queue-4.4/crypto-af_alg-add-nokey-compatibility-path.patch
queue-4.4/crypto-sun4i-ss-add-missing-statesize.patch
queue-4.4/crypto-algif_hash-require-setkey-before-accept-2.patch
queue-4.4/crypto-algif_skcipher-sendmsg-sg-marking-is-off-by-one.patch
queue-4.4/crypto-algif_skcipher-fix-race-condition-in-skcipher_check_key.patch
queue-4.4/crypto-caam-make-write-transactions-bufferable-on-ppc-platforms.patch
queue-4.4/crypto-af_alg-fix-socket-double-free-when-accept-fails.patch