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 X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D3C42C33CB3 for ; Thu, 30 Jan 2020 18:53:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id ABAC620702 for ; Thu, 30 Jan 2020 18:53:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580410398; bh=OXgomte17JlearWZZPYbnhxS7XtT85qARK8YQ6+sZWk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=vByc0sOw4k4fNwJ3aQRzMd2B7clnu9yc+M94suet2ukE4ly47MSqjSWEHTQFSpz0K DMk+hfn1hTHb2INHXxI3SJnoXDfdNPzbo6KjxINI/3bgkucMRfyULavXXsXiuv3c0z vGC0zDguB1CSD0Dh9Dr6PJhhkZqmQfdDYDfg9v80= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730322AbgA3SmJ (ORCPT ); Thu, 30 Jan 2020 13:42:09 -0500 Received: from mail.kernel.org ([198.145.29.99]:50258 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728032AbgA3SmF (ORCPT ); Thu, 30 Jan 2020 13:42:05 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E12DA205F4; Thu, 30 Jan 2020 18:42:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580409725; bh=OXgomte17JlearWZZPYbnhxS7XtT85qARK8YQ6+sZWk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CCMJf4GVNewgA8woerUmoJBjpJDLuvhUEGiUnW2IBXNbl8TvJElpUfi2sAufxSXIn E+Z3FsPmrAiLhiG7iV+ld5ga4wh2bzCX+TXWEKnZj2grxVgT9K4gKnRFAqEKCRU9Uy Z9pAaH35dMXpWOJwPMVBZ/r8oif5Antk3M6cPC9k= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Sean Wang , Johan Hovold , Marcel Holtmann Subject: [PATCH 5.4 001/110] Bluetooth: btusb: fix non-atomic allocation in completion handler Date: Thu, 30 Jan 2020 19:37:37 +0100 Message-Id: <20200130183614.048238705@linuxfoundation.org> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200130183613.810054545@linuxfoundation.org> References: <20200130183613.810054545@linuxfoundation.org> User-Agent: quilt/0.66 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Johan Hovold commit 22cc6b7a1dbb58da4afc539d9b7d470b23a25eea upstream. USB completion handlers are called in atomic context and must specifically not allocate memory using GFP_KERNEL. Fixes: a1c49c434e15 ("Bluetooth: btusb: Add protocol support for MediaTek MT7668U USB devices") Cc: stable # 5.3 Cc: Sean Wang Signed-off-by: Johan Hovold Signed-off-by: Marcel Holtmann Signed-off-by: Greg Kroah-Hartman --- drivers/bluetooth/btusb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -2585,7 +2585,7 @@ static void btusb_mtk_wmt_recv(struct ur * and being processed the events from there then. */ if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) { - data->evt_skb = skb_clone(skb, GFP_KERNEL); + data->evt_skb = skb_clone(skb, GFP_ATOMIC); if (!data->evt_skb) goto err_out; }