From: Cristian Stoica <cristian.sto...@freescale.com>
For in-place operations, the scatterlist must be big enough to allow for
either the source or destination data:
- for block ciphers, the destination will be bigger than the source if
the source is not multiple of blocksize
- for aead ciphers, the additional data and padding guarantees the
destination to be bigger than the source.
Signed-off-by: Cristian Stoica <cristian.sto...@freescale.com>
Reviewed-by: Mircea Pop <mircea....@freescale.com>
Reviewed-by: Alexandru Porosanu <alexandru.poros...@freescale.com>
Reviewed-by: Horia Ioan Geanta Neag <horia.gea...@freescale.com>
Tested-by: Horia Ioan Geanta Neag <horia.gea...@freescale.com>
Signed-off-by: Horia Geanta <horia.gea...@freescale.com>
---
zc.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/zc.c b/zc.c
index 11492e4..2537ca4 100644
--- a/zc.c
+++ b/zc.c
@@ -162,8 +162,9 @@ int get_userbuf(struct csession *ses,
}
if (src == dst) { /* inplace operation */
- rc = __get_userbuf(src, src_len, 1, ses->used_pages,
- ses->pages, ses->sg, task, mm);
+ rc = __get_userbuf(src, max(src_len, dst_len), 1,
ses->used_pages,
+ ses->pages, ses->sg, task, mm);
+
if (unlikely(rc)) {
dprintk(1, KERN_ERR,
"failed to get user pages for data IO\n");
--
1.7.7.6
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