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Date: Sun, 14 Feb 2016 14:23:03 -0800 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Dmitry Vyukov <dvyukov@...gle.com>, Herbert Xu <herbert@...dor.apana.org.au> Subject: [PATCH 4.3 176/200] crypto: algif_skcipher - Load TX SG list after waiting 4.3-stable review patch. If anyone has any objections, please let me know. ------------------ From: Herbert Xu <herbert@...dor.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@...gle.com> Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au> Tested-by: Dmitry Vyukov <dvyukov@...gle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.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);
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