This is a note to let you know that I've just added the patch titled
crypto: scatterwalk - Set the chain pointer indication bit
to the 3.12-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-scatterwalk-set-the-chain-pointer-indication-bit.patch
and it can be found in the queue-3.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 41da8b5adba77e22584f8b45f9641504fa885308 Mon Sep 17 00:00:00 2001
From: Tom Lendacky <thomas.lendacky@xxxxxxx>
Date: Tue, 12 Nov 2013 11:46:10 -0600
Subject: crypto: scatterwalk - Set the chain pointer indication bit
From: Tom Lendacky <thomas.lendacky@xxxxxxx>
commit 41da8b5adba77e22584f8b45f9641504fa885308 upstream.
The scatterwalk_crypto_chain function invokes the scatterwalk_sg_chain
function to chain two scatterlists, but the chain pointer indication
bit is not set. When the resulting scatterlist is used, for example,
by sg_nents to count the number of scatterlist entries, a segfault occurs
because sg_nents does not follow the chain pointer to the chained scatterlist.
Update scatterwalk_sg_chain to set the chain pointer indication bit as is
done by the sg_chain function.
Signed-off-by: Tom Lendacky <thomas.lendacky@xxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
include/crypto/scatterwalk.h | 1 +
1 file changed, 1 insertion(+)
--- a/include/crypto/scatterwalk.h
+++ b/include/crypto/scatterwalk.h
@@ -36,6 +36,7 @@ static inline void scatterwalk_sg_chain(
{
sg_set_page(&sg1[num - 1], (void *)sg2, 0, 0);
sg1[num - 1].page_link &= ~0x02;
+ sg1[num - 1].page_link |= 0x01;
}
static inline struct scatterlist *scatterwalk_sg_next(struct scatterlist *sg)
Patches currently in stable-queue which might be from thomas.lendacky@xxxxxxx are
queue-3.12/crypto-scatterwalk-set-the-chain-pointer-indication-bit.patch
queue-3.12/crypto-authenc-find-proper-iv-address-in-ablkcipher-callback.patch
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