[PATCH v3 net-next 10/19] tls: Fix zerocopy_from_iter iov handling

[Boris Pismenny]

zerocopy_from_iter iterates over the message, but it doesn't revert the
updates made by the iov iteration. This patch fixes it. Now, the iov can
be used after calling zerocopy_from_iter.

Fixes: 3c4d75591 ("tls: kernel TLS support")
Signed-off-by: Boris Pismenny <bor...@mellanox.com>
---
 net/tls/tls_sw.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c
index 2a6ba0f..37ac220 100644
--- a/net/tls/tls_sw.c
+++ b/net/tls/tls_sw.c
@@ -318,6 +318,7 @@ static int zerocopy_from_iter(struct sock *sk, struct 
iov_iter *from,
 out:
        *size_used = size;
        *pages_used = num_elem;
+       iov_iter_revert(from, size);
 
        return rc;
 }
-- 
1.8.3.1