Patch "Revert "crypto: talitos - convert to use be16_add_cpu()"" has been added to the 4.1-stable tree

Patch "Revert "crypto: talitos - convert to use be16_add_cpu()"" has been added to the 4.1-stable tree

[gregkh]

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

    Revert "crypto: talitos - convert to use be16_add_cpu()"

to the 4.1-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:
     revert-crypto-talitos-convert-to-use-be16_add_cpu.patch
and it can be found in the queue-4.1 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 69d9cd8c592f1abce820dbce7181bbbf6812cfbd Mon Sep 17 00:00:00 2001
From: Horia Geant? <horia.geanta@freescale.com>
Date: Mon, 11 May 2015 20:04:49 +0300
Subject: Revert "crypto: talitos - convert to use be16_add_cpu()"

From: Horia Geant? <horia.geanta@freescale.com>

commit 69d9cd8c592f1abce820dbce7181bbbf6812cfbd upstream.

This reverts commit 7291a932c6e27d9768e374e9d648086636daf61c.

The conversion to be16_add_cpu() is incorrect in case cryptlen is
negative due to premature (i.e. before addition / subtraction)
implicit conversion of cryptlen (int -> u16) leading to sign loss.

Cc: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Horia Geanta <horia.geanta@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/crypto/talitos.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/crypto/talitos.c
+++ b/drivers/crypto/talitos.c
@@ -925,7 +925,8 @@ static int sg_to_link_tbl(struct scatter
 		sg_count--;
 		link_tbl_ptr--;
 	}
-	be16_add_cpu(&link_tbl_ptr->len, cryptlen);
+	link_tbl_ptr->len = cpu_to_be16(be16_to_cpu(link_tbl_ptr->len)
+					+ cryptlen);
 
 	/* tag end of link table */
 	link_tbl_ptr->j_extent = DESC_PTR_LNKTBL_RETURN;


Patches currently in stable-queue which might be from horia.geanta@freescale.com are

queue-4.1/crypto-talitos-avoid-memleak-in-talitos_alg_alloc.patch
queue-4.1/revert-crypto-talitos-convert-to-use-be16_add_cpu.patch