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authorReshetova, Elena <elena.reshetova@intel.com>2017-07-04 15:52:58 +0300
committerDavid S. Miller <davem@davemloft.net>2017-07-04 22:35:15 +0100
commitf00c854c965fd7197c9ac0f59d823ca0a909e33b (patch)
tree032868128119ee633825680a74ade30c1a029a36 /net/l2tp/l2tp_core.c
parentfbea9e0760bf17e681b9bfc25b97b408708b9ff2 (diff)
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net, l2tp: convert l2tp_session.ref_count from atomic_t to refcount_t
refcount_t type and corresponding API should be used instead of atomic_t when the variable is used as a reference counter. This allows to avoid accidental refcounter overflows that might lead to use-after-free situations. Signed-off-by: Elena Reshetova <elena.reshetova@intel.com> Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: David Windsor <dwindsor@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/l2tp/l2tp_core.c')
-rw-r--r--net/l2tp/l2tp_core.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c
index 203c4aa3e916..b0c2d4ae781d 100644
--- a/net/l2tp/l2tp_core.c
+++ b/net/l2tp/l2tp_core.c
@@ -1854,7 +1854,7 @@ struct l2tp_session *l2tp_session_create(int priv_size, struct l2tp_tunnel *tunn
/* Bump the reference count. The session context is deleted
* only when this drops to zero.
*/
- l2tp_session_inc_refcount(session);
+ refcount_set(&session->ref_count, 1);
l2tp_tunnel_inc_refcount(tunnel);
/* Ensure tunnel socket isn't deleted */