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Bluetooth: l2cap: always unlock channel in l2cap_conless_channel()

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[ Upstream commit c531e63871c0b50c8c4e62c048535a08886fba3e ]

Add missing call to 'l2cap_chan_unlock()' on receive error handling
path in 'l2cap_conless_channel()'.

Fixes: a24cce144b ("Bluetooth: Fix reference counting of global L2CAP channels")
Reported-by: syzbot+45ac74737e866894acb0@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=45ac74737e866894acb0
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dmitry Antipov
2024-07-31 12:19:36 +03:00
committed by Greg Kroah-Hartman
parent 3840189e46
commit 64f4938368
1 changed files with 1 additions and 0 deletions
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net/bluetooth/l2cap_core.c
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@@ -7055,6 +7055,7 @@ static void l2cap_conless_channel(struct l2cap_conn *conn, __le16 psm,
bt_cb(skb)->l2cap.psm = psm; bt_cb(skb)->l2cap.psm = psm;
if (!chan->ops->recv(chan, skb)) { if (!chan->ops->recv(chan, skb)) {
l2cap_chan_unlock(chan);
l2cap_chan_put(chan); l2cap_chan_put(chan);
return; return;
} }