3.19.8-ckt4 -stable review patch. If anyone has any objections, please let me
know.
------------------
From: Horia Geant? <horia.gea...@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_...@trendmicro.com.cn>
Signed-off-by: Horia Geanta <horia.gea...@freescale.com>
Signed-off-by: Herbert Xu <herb...@gondor.apana.org.au>
Signed-off-by: Kamal Mostafa <ka...@canonical.com>
---
drivers/crypto/talitos.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c
index 58537f9..0584c4e 100644
--- a/drivers/crypto/talitos.c
+++ b/drivers/crypto/talitos.c
@@ -927,7 +927,8 @@ static int sg_to_link_tbl(struct scatterlist *sg, int
sg_count,
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;
--
1.9.1
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