fix race condition
Signed-off-by: Gustavo F. Padovan <gustavo@xxxxxxxxxxxxxxxxx>
---
net/bluetooth/l2cap.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c
index ca4d3b4..355f375 100644
--- a/net/bluetooth/l2cap.c
+++ b/net/bluetooth/l2cap.c
@@ -175,12 +175,14 @@ static inline void __l2cap_chan_link(struct l2cap_chan_list *l, struct sock *sk)
{
sock_hold(sk);
+ write_lock_bh(&l->lock);
if (l->head)
l2cap_pi(l->head)->prev_c = sk;
l2cap_pi(sk)->next_c = l->head;
l2cap_pi(sk)->prev_c = NULL;
l->head = sk;
+ write_unlock_bh(&l->lock);
}
static inline void l2cap_chan_unlink(struct l2cap_chan_list *l, struct sock *sk)
--
1.6.0.6
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