From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8AF05130E27; Mon, 12 Aug 2024 16:13:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723479211; cv=none; b=EYPtMTak/eB+zg5YLXXSRT2rMTeJZKf+YrGJSgln0h3ibVsuAOnqlcEz3WFNi0SvROpxnow7wC1uMT7AE6Din60geGpPT4YtixO0l5Ur+nRNn4wl67K1kmrd8Y90VN6ExbLO4C6n077Ebkc1T4DhkR11b/0M4t8pGVYTJCEqAyc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723479211; c=relaxed/simple; bh=+/iqUQz8PveP9zg0tz7R3vphdL1Ne2pamtykBGPbBBQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=NBLHHcKucqnnMtoXwQPijgLKnMQJFLLsQy2iBSt8JqVuvd6pyCa7LoBNcOUtU4Ty1z/Xp9yN82M0dKEVz4Zuq/JNOrEFHC71I2w5uRi7UniDnABa2ulu6wTF5jljFKKwIDLh5+x35ng6j8IrVgwYexj8b7YFkVpmoDyr1bvsL+I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=LYlKe2fC; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="LYlKe2fC" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 11A8AC4AF0D; Mon, 12 Aug 2024 16:13:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1723479211; bh=+/iqUQz8PveP9zg0tz7R3vphdL1Ne2pamtykBGPbBBQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LYlKe2fCZ6K/NYzIiCC/LGJ8AjvjDwifXaU0irrkBn4lPKS/bqIfHCwVa+uhhMf6o 5H7kIwE8TgpJNjsqYZHoi2iqebDhEsRxfUd9bNgh3Wuy8i8OkCmG0xQP93RxPoMKAf ht9ORkhT4XQcQZ9XDT6hR4k8dQvR33gSBB73gnK0= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, syzbot+45ac74737e866894acb0@syzkaller.appspotmail.com, Dmitry Antipov , Luiz Augusto von Dentz , Sasha Levin Subject: [PATCH 6.6 017/189] Bluetooth: l2cap: always unlock channel in l2cap_conless_channel() Date: Mon, 12 Aug 2024 18:01:13 +0200 Message-ID: <20240812160132.806791334@linuxfoundation.org> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240812160132.135168257@linuxfoundation.org> References: <20240812160132.135168257@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Dmitry Antipov [ Upstream commit c531e63871c0b50c8c4e62c048535a08886fba3e ] Add missing call to 'l2cap_chan_unlock()' on receive error handling path in 'l2cap_conless_channel()'. Fixes: a24cce144b98 ("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 Signed-off-by: Luiz Augusto von Dentz Signed-off-by: Sasha Levin --- net/bluetooth/l2cap_core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c index 1164c6d927281..2651cc2d5c283 100644 --- a/net/bluetooth/l2cap_core.c +++ b/net/bluetooth/l2cap_core.c @@ -6775,6 +6775,7 @@ static void l2cap_conless_channel(struct l2cap_conn *conn, __le16 psm, bt_cb(skb)->l2cap.psm = psm; if (!chan->ops->recv(chan, skb)) { + l2cap_chan_unlock(chan); l2cap_chan_put(chan); return; } -- 2.43.0