From patchwork Tue Mar 19 15:46:11 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johan Hovold X-Patchwork-Id: 13596809 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 8AE30657AD; Tue, 19 Mar 2024 15:46:13 +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=1710863173; cv=none; b=tUjI39Tai9YQfqEGc10dXP46UgPZ5FXwIJC+yhH526251fZryXNUQj7vPDdq6/Za24J3OqatX+wy09zD0W6cqTvjmMK3v7VnbTGpGckQZ2x+uf+tyllnkElomaa73ZUHPtOSmaDJBhs6kmU0uLNYDn2iez3yiQFpSHvpRhoJNyg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710863173; c=relaxed/simple; bh=71GoqhGH8N8bnYtZsq9ijp622SfqGqj12oKJWg3VC74=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=TcTP2qPNdllX5k3Yzn+ucmuUE9Itmx067gASSvujHiFv45pFJLH+A9AohIa5+QU/Xi58kwriJnMk0XZm2Tjp134OuThuW65qt7syANTbtUYoMJNjcxBIcJGBJSN1lgvpyYMT4tQxfaS644YbXHgLhrHVq5AjUxn4b+7fqLNy96E= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=FDwpXITz; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="FDwpXITz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3B12BC433F1; Tue, 19 Mar 2024 15:46:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1710863173; bh=71GoqhGH8N8bnYtZsq9ijp622SfqGqj12oKJWg3VC74=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FDwpXITzgKpJYpScRM4cJlp8JdccJ61kLQnExKuxUbGRi3xpVwvEiFUhKz5MoQBBY IOvfBRWJ2ZAGTm2uk5U4G9wFRkMyCudQTWi5Dwbg+0fw7IGEb/eMQOiFzOQ3sJ8gWl MD735TzjhiMaTEFXt/25AYj/8RB3r4Kx1wCCTdjhXCzsmRJanXWYiMZe/Y4la76Nk4 XhkOiGTG0xq17xMARVI3+SM3SU2Q9Gix/LEOXKbom4XLhR7Yq5cmzMPYnhd4HDonMf 4kINiBELTVNk4g6BJHCT3j9zuklxE6E423+9xUZSizgVImeDqrp6XUkLrIxlda370p LiMRwkt1VLsBQ== Received: from johan by xi.lan with local (Exim 4.97.1) (envelope-from ) id 1rmbfQ-000000000eX-1tKc; Tue, 19 Mar 2024 16:46:20 +0100 From: Johan Hovold To: Marcel Holtmann , Luiz Augusto von Dentz Cc: Zhengping Jiang , linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold , stable@vger.kernel.org Subject: [PATCH 2/2] Bluetooth: qca: fix NULL-deref on non-serdev setup Date: Tue, 19 Mar 2024 16:46:11 +0100 Message-ID: <20240319154611.2492-3-johan+linaro@kernel.org> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240319154611.2492-1-johan+linaro@kernel.org> References: <20240319154611.2492-1-johan+linaro@kernel.org> Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Qualcomm ROME controllers can be registered from the Bluetooth line discipline and in this case the HCI UART serdev pointer is NULL. Add the missing sanity check to prevent a NULL-pointer dereference when setup() is called for a non-serdev controller. Fixes: e9b3e5b8c657 ("Bluetooth: hci_qca: only assign wakeup with serial port support") Cc: stable@vger.kernel.org # 6.2 Cc: Zhengping Jiang Signed-off-by: Johan Hovold --- drivers/bluetooth/hci_qca.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c index 84f728943962..6a69a7f9ef64 100644 --- a/drivers/bluetooth/hci_qca.c +++ b/drivers/bluetooth/hci_qca.c @@ -1960,8 +1960,10 @@ static int qca_setup(struct hci_uart *hu) qca_debugfs_init(hdev); hu->hdev->hw_error = qca_hw_error; hu->hdev->cmd_timeout = qca_cmd_timeout; - if (device_can_wakeup(hu->serdev->ctrl->dev.parent)) - hu->hdev->wakeup = qca_wakeup; + if (hu->serdev) { + if (device_can_wakeup(hu->serdev->ctrl->dev.parent)) + hu->hdev->wakeup = qca_wakeup; + } } else if (ret == -ENOENT) { /* No patch/nvm-config found, run with original fw/config */ set_bit(QCA_ROM_FW, &qca->flags);