This is a note to let you know that I've just added the patch titled
crypto: qat - Prevent dma mapping zero length assoc data
to the 3.17-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-qat-prevent-dma-mapping-zero-length-assoc-data.patch
and it can be found in the queue-3.17 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 923a6e5e5f171317ac8bb462ac4b814fa7880d3c Mon Sep 17 00:00:00 2001
From: Tadeusz Struk <tadeusz.struk@xxxxxxxxx>
Date: Mon, 13 Oct 2014 18:24:26 -0700
Subject: crypto: qat - Prevent dma mapping zero length assoc data
From: Tadeusz Struk <tadeusz.struk@xxxxxxxxx>
commit 923a6e5e5f171317ac8bb462ac4b814fa7880d3c upstream.
Do not attempt to dma map associated data if it is zero length.
Signed-off-by: Tadeusz Struk <tadeusz.struk@xxxxxxxxx>
Tested-by: Nikolay Aleksandrov <nikolay@xxxxxxxxxx>
Reviewed-by: Prarit Bhargava <prarit@xxxxxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/crypto/qat/qat_common/qat_algs.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/crypto/qat/qat_common/qat_algs.c
+++ b/drivers/crypto/qat/qat_common/qat_algs.c
@@ -650,6 +650,8 @@ static int qat_alg_sgl_to_bufl(struct qa
goto err;
for_each_sg(assoc, sg, assoc_n, i) {
+ if (!sg->length)
+ continue;
bufl->bufers[bufs].addr = dma_map_single(dev,
sg_virt(sg),
sg->length,
Patches currently in stable-queue which might be from tadeusz.struk@xxxxxxxxx are
queue-3.17/crypto-qat-enforce-valid-numa-configuration.patch
queue-3.17/crypto-qat-prevent-dma-mapping-zero-length-assoc-data.patch
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