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=-5.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_SANE_2 autolearn=no 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 74AA6C07E96 for ; Thu, 15 Jul 2021 04:41:30 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4264D61360 for ; Thu, 15 Jul 2021 04:41:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4264D61360 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Date:CC:To:From:Subject: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=9nR12pZ+GzQsIjy4qytGDmdFha8K47i+YVMMwxT0bSM=; b=OeIBEo8XvxnAZr gzxAIAhAX74MXAWmTof+OscQMxCWqTOgzz9iAQ/DeKaDkcQEKDhJS21p9cp4pAzm/JTf6Y7sRKdVJ yVWON14QUGSNlE+rMqXv93x2xYKLRtXX0kzbT4IayS2oFzIb9itst32mXV6c1fMvbmIyfz/8FjT9U nql+zztdbRIps3BzXC6t7CSrewryjhBt95a2B/0rzBeiFu5RRQ9JjGSv+rNT8lt2Kn80ukSSiV2H/ 9Hrbv4XBSc4L11BKoLInl1NIlmPtjCFAKLFyS+FW1qyZbm8hZa2n3Pr1AkGYxNOKCdMipQRHVLORf dQgm9Y5PkStYhe9hLx+g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m3t9H-00H7Nn-7g; Thu, 15 Jul 2021 04:38:59 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1m3t9C-00H7Ms-3u; Thu, 15 Jul 2021 04:38:56 +0000 X-UUID: 5199ec28aa9648b68960f458b5bfcb0f-20210714 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:MIME-Version:Content-Type:Date:CC:To:From:Subject:Message-ID; bh=FlJW4bMYIdDzSfoxFCdD9ZdvL9adkU6NtqycME8tAaU=; b=hZYdqdv6jWmqityXaKrWkMiyxbB36kYRbxOfsXEJrdKZriw4e988BX/3grOIgjMpW+uDOOtqIjLuKnvTJkcB9x5WlyUgUhsSUc0t1uIW+ofG/27MutZPoLMhjJZu2656XoAEIlTIBSwtt81xq1P2crgofiGaVdkfuLd1I1SNdWw=; X-UUID: 5199ec28aa9648b68960f458b5bfcb0f-20210714 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 170665269; Wed, 14 Jul 2021 21:38:48 -0700 Received: from MTKMBS01N1.mediatek.inc (172.21.101.68) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 14 Jul 2021 21:28:46 -0700 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs01n1.mediatek.inc (172.21.101.68) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 15 Jul 2021 12:28:39 +0800 Received: from [172.21.77.33] (172.21.77.33) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 15 Jul 2021 12:28:39 +0800 Message-ID: <1626323319.18118.17.camel@mtkswgap22> Subject: Fix: Please help to cherry-pick patch "bdi: Do not use freezable workqueue" to stable tree From: Macpaul Lin To: Greg Kroah-Hartman , linux-stable CC: Mika Westerberg , Ainge Hsu , Eddie Hung , Miles Chen , Kuohong Wang , linux-mediatek , Macpaul Lin , linux-arm-kernel , linux-usb , AceLan Kao , "Rafael J. Wysocki" , Jens Axboe , Mediatek WSD Upstream Date: Thu, 15 Jul 2021 12:28:39 +0800 X-Mailer: Evolution 3.2.3-0ubuntu6 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210714_213854_366779_A44D4B1A X-CRM114-Status: UNSURE ( 6.87 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Dear Greg, Our customers have feedback some similar issues as below link on Android kernel-4.14 and kernel-4.19. Link: https://marc.info/?l=linux-kernel&m=138695698516487 They've reported system become abnormal when OTG U-disk has been plugged out after the system has been suspended. After debugging, we've found the root cause is the same of the issue (link) has been reported. We've also tested the patch "bdi: Do not use freezable workqueue" is worked. Link: https://lkml.org/lkml/2019/10/4/176 commit id in Linus tree: a2b90f11217790ec0964ba9c93a4abb369758c26 However, we've checked that patch seems hasn't been applied to stable tree (We've checked 4.14 and 4.19). Would you please help to cherry-pick this patch to stable trees (and to Android trees)? Thanks! Macpaul Lin _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel