From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3AC7DCCA47C for ; Mon, 20 Jun 2022 14:02:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350160AbiFTOCp (ORCPT ); Mon, 20 Jun 2022 10:02:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45304 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1353586AbiFTN6b (ORCPT ); Mon, 20 Jun 2022 09:58:31 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7C9201BEAC; Mon, 20 Jun 2022 06:23:59 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id E22E160C2C; Mon, 20 Jun 2022 13:08:27 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D8EB7C3411B; Mon, 20 Jun 2022 13:08:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1655730507; bh=WVB2cZoIsM8ti2+D/PLRAPxWV297NPg1wTNvLUzUnTo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jvEsJAMVRguhDbRXzmhoFhZtaDT5BtmuIap/0vm7zjKcxGlQLUZgHjynUN0pkQ6H9 N0GlWxZu9lkCkqnSK+yIkqTRQhOV71uOkEvugym3yCGSoXencAhwVH10Jsmwmj9BPt 8aBtPWymVOx44xnvQpi2qCRR6gLq4a58YbbLyR3U= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Xiaohui Zhang , Krzysztof Kozlowski , Jakub Kicinski , Sasha Levin Subject: [PATCH 5.15 032/106] nfc: nfcmrvl: Fix memory leak in nfcmrvl_play_deferred Date: Mon, 20 Jun 2022 14:50:51 +0200 Message-Id: <20220620124725.335361192@linuxfoundation.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220620124724.380838401@linuxfoundation.org> References: <20220620124724.380838401@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Xiaohui Zhang [ Upstream commit 8a4d480702b71184fabcf379b80bf7539716752e ] Similar to the handling of play_deferred in commit 19cfe912c37b ("Bluetooth: btusb: Fix memory leak in play_deferred"), we thought a patch might be needed here as well. Currently usb_submit_urb is called directly to submit deferred tx urbs after unanchor them. So the usb_giveback_urb_bh would failed to unref it in usb_unanchor_urb and cause memory leak. Put those urbs in tx_anchor to avoid the leak, and also fix the error handling. Signed-off-by: Xiaohui Zhang Acked-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20220607083230.6182-1-xiaohuizhang@ruc.edu.cn Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- drivers/nfc/nfcmrvl/usb.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/nfc/nfcmrvl/usb.c b/drivers/nfc/nfcmrvl/usb.c index a99aedff795d..ea7309453096 100644 --- a/drivers/nfc/nfcmrvl/usb.c +++ b/drivers/nfc/nfcmrvl/usb.c @@ -388,13 +388,25 @@ static void nfcmrvl_play_deferred(struct nfcmrvl_usb_drv_data *drv_data) int err; while ((urb = usb_get_from_anchor(&drv_data->deferred))) { + usb_anchor_urb(urb, &drv_data->tx_anchor); + err = usb_submit_urb(urb, GFP_ATOMIC); - if (err) + if (err) { + kfree(urb->setup_packet); + usb_unanchor_urb(urb); + usb_free_urb(urb); break; + } drv_data->tx_in_flight++; + usb_free_urb(urb); + } + + /* Cleanup the rest deferred urbs. */ + while ((urb = usb_get_from_anchor(&drv_data->deferred))) { + kfree(urb->setup_packet); + usb_free_urb(urb); } - usb_scuttle_anchored_urbs(&drv_data->deferred); } static int nfcmrvl_resume(struct usb_interface *intf) -- 2.35.1