From: Luiz Augusto von Dentz luiz.von.dentz@intel.com
[ Upstream commit de895b43932cb47e69480540be7eca289af24f23 ]
The use of l2cap_chan_del is not safe under a loop using list_for_each_entry.
Signed-off-by: Luiz Augusto von Dentz luiz.von.dentz@intel.com Signed-off-by: Marcel Holtmann marcel@holtmann.org Signed-off-by: Sasha Levin sashal@kernel.org --- net/bluetooth/l2cap_core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c index 015f9ecadd0a..b1f4d5505bba 100644 --- a/net/bluetooth/l2cap_core.c +++ b/net/bluetooth/l2cap_core.c @@ -6062,7 +6062,7 @@ static inline int l2cap_ecred_conn_rsp(struct l2cap_conn *conn, struct l2cap_ecred_conn_rsp *rsp = (void *) data; struct hci_conn *hcon = conn->hcon; u16 mtu, mps, credits, result; - struct l2cap_chan *chan; + struct l2cap_chan *chan, *tmp; int err = 0, sec_level; int i = 0;
@@ -6081,7 +6081,7 @@ static inline int l2cap_ecred_conn_rsp(struct l2cap_conn *conn,
cmd_len -= sizeof(*rsp);
- list_for_each_entry(chan, &conn->chan_l, list) { + list_for_each_entry_safe(chan, tmp, &conn->chan_l, list) { u16 dcid;
if (chan->ident != cmd->ident ||