From patchwork Tue Mar 21 02:36:36 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: HaoTien Hsu X-Patchwork-Id: 72639 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:604a:0:0:0:0:0 with SMTP id j10csp1556487wrt; Mon, 20 Mar 2023 19:56:14 -0700 (PDT) X-Google-Smtp-Source: AK7set9oElfGQVpFI3H3tGhimUOvfohgTfAS8Ea7fBcJbwz7f6OXza1z/UHjQKegDF6gXRaasDh8 X-Received: by 2002:a17:90b:4c08:b0:237:2f3c:a1cd with SMTP id na8-20020a17090b4c0800b002372f3ca1cdmr920951pjb.19.1679367374085; Mon, 20 Mar 2023 19:56:14 -0700 (PDT) ARC-Seal: i=2; a=rsa-sha256; t=1679367374; cv=pass; d=google.com; s=arc-20160816; b=FbZSlX/7oE4xw5WfAOB3tJjyTleNTpKMf5eJpUGv38NAWKQKjXwN2wbBZvJUQHZXZa /V+iZx8lmbZmQA/6yRUi3KSmbH4pu295bfhXIF5eJEtfF/XDNR/8Tc6zLAvNde+zpDud SnOCwZ1E4mPz/SEh3jjYkHrhhHtjPCJnrhEG6bA8RWl1vORToiFlx9wO596W1rPmPX00 zmStR2Y0MYDqgQ8LOoiBYxnl2VM8MV5qCVAO/3Dz6DMJlVJ+hXEYWgRAmAkV3KxYohEQ mjnwiTfOsHb+b90xrydvcoOhJAdVRZjHvuBrTQbuuVZTkQwIEy5GyzSaB42eZFN6DAPu OB3g== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :message-id:date:subject:cc:to:from:dkim-signature; bh=XsJjOccahbojjway2MR9K2kcF97x8b8KTIPgmJ74SY0=; b=TrbCsEBecZ5oEZD5DkhgBQ9UnZ8dg54dYCdMkqzdPkmCqR8n8K9g/QvcfXfwCyW2f/ OTWDU3bGVtFtiuqDb9p3vqXRkgS9bTWQsNTyZX7/NQKJ11sD8oyMfkahSNdFvJ9e1Isw liot+UIMLLcOAkpuYCg3SYm2uJbEd1Q92DjfsXKZ7w4jj/fbiGqJHP7iegWNEzD+0DCm S2Q09rhhilAY1nH93cPB3+59UEy5l/TfRO8yBrV4clh7ewwJ6BT6YKsXELKuAboWVOID I1AFRnHlRSLMTZ6BQrMGYo4mTdu1G5OEb6srKVJrD8jDXGYrh7KDmal8iZRV3y/MptiW ZPig== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@Nvidia.com header.s=selector2 header.b=daINecRZ; arc=pass (i=1 spf=pass spfdomain=nvidia.com dmarc=pass fromdomain=nvidia.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=nvidia.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id h14-20020a17090adb8e00b0023def94be5esi11826932pjv.20.2023.03.20.19.56.01; Mon, 20 Mar 2023 19:56:14 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@Nvidia.com header.s=selector2 header.b=daINecRZ; arc=pass (i=1 spf=pass spfdomain=nvidia.com dmarc=pass fromdomain=nvidia.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=nvidia.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229744AbjCUChJ (ORCPT + 99 others); Mon, 20 Mar 2023 22:37:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56576 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229527AbjCUChH (ORCPT ); Mon, 20 Mar 2023 22:37:07 -0400 Received: from NAM04-DM6-obe.outbound.protection.outlook.com (mail-dm6nam04on2066.outbound.protection.outlook.com [40.107.102.66]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 12CE67DB8; Mon, 20 Mar 2023 19:37:04 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=nOVDDrQzXy5lx+QNVGzLm7WYdKvoJL/nl+DqHDDBnoZa2rNkajUDVouuZVLqlQuwflItEpsIcv9VshxR6zIXK16qWhOifSgCnIiQ0SmAwwfzSG8L4Nd3wTJFxUK1FI/4FUlku5CwKrEhekHVPbh2tE8WfLJoJRvMq+2UuBPavum9L+uYYBeY9J9DEM6rWuHhhC4mAlZVz55fXMGvUygrmlDjRUtk1EMJaCZwrs5cEtrTEGR4auMus4zI/7RLD71ZmAzPx/Fa7/mQ+mi2cZdzf68j+bR9ovZ/Xtm3LIXtfQZd8IylHxJOKZivUSkw77js+1SAMCFJoJn/RtqdapaGZQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=XsJjOccahbojjway2MR9K2kcF97x8b8KTIPgmJ74SY0=; b=H0Vo6KTRmuq2JRkt0FqDIeSw98NnaKnv7bnFg1s4MytUQun7xF0gfcbzmptAU9Uoe5kqPvuqwOMVjSAjdHxFWTTEvrtdjO7bB6FJvBYtdAD6FPi+beoYNimxEZS3YKjUfxZfeiyHMoHcM+J3WTqY21OUlpDmgYH42qQv3PKUTbqXKwurTvFcqekO+Jh91iaQVN67d6/ZGDxdZYJo/U400kXr87SmJWNhYpC+yvRZ+Z4JdqT0KZUEKVQVm6c1hRq8D48crW4yrj2h13U0MwIlkBeBB6ILY947/unRKgvZLVJZ7XKVt3aKQ0icG5xRI5DyuuKU+tt0HReXkmWccvbr/Q== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 216.228.117.160) smtp.rcpttodomain=intel.com smtp.mailfrom=nvidia.com; dmarc=pass (p=reject sp=reject pct=100) action=none header.from=nvidia.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=XsJjOccahbojjway2MR9K2kcF97x8b8KTIPgmJ74SY0=; b=daINecRZGg3H8YvvbGRuMl1VJvrm+U6SwqhS7zBdPrETHaBJGNoZz2ihZ06j8hUxrhVphxBiAmh9nzbokRl9Moxf3gxOn96vqqlq2Cx8XKwl+9r1kaULuUOjoAPmeKQgsC7cQGcrSHLaliscumnkn+0KMrr9pSlYpQjkyvxMoIlvNUzMC7RHvb6kZrtoVP2uiDNmM+1c7JqSuQOb2jV48kvxZqVhDOq+UeN4elG7d0od3XRIhLNTfrvDeDzySNt41+9g4kCc0+9B8/tVNxlC7ZlN+MKCfI8ItrSmMR5QVqp6vLnutOfMWEk5dqdXKl2PSUSSycCOLGruwRXNevUicg== Received: from DM6PR08CA0044.namprd08.prod.outlook.com (2603:10b6:5:1e0::18) by SJ2PR12MB8926.namprd12.prod.outlook.com (2603:10b6:a03:53b::5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6178.37; Tue, 21 Mar 2023 02:37:02 +0000 Received: from DM6NAM11FT104.eop-nam11.prod.protection.outlook.com (2603:10b6:5:1e0:cafe::1f) by DM6PR08CA0044.outlook.office365.com (2603:10b6:5:1e0::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6178.37 via Frontend Transport; Tue, 21 Mar 2023 02:37:01 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 216.228.117.160) smtp.mailfrom=nvidia.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=nvidia.com; Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 216.228.117.160 as permitted sender) receiver=protection.outlook.com; client-ip=216.228.117.160; helo=mail.nvidia.com; pr=C Received: from mail.nvidia.com (216.228.117.160) by DM6NAM11FT104.mail.protection.outlook.com (10.13.173.232) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6222.16 via Frontend Transport; Tue, 21 Mar 2023 02:37:01 +0000 Received: from rnnvmail201.nvidia.com (10.129.68.8) by mail.nvidia.com (10.129.200.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.5; Mon, 20 Mar 2023 19:36:49 -0700 Received: from 0e64808-lcelt.nvidia.com (10.126.231.37) by rnnvmail201.nvidia.com (10.129.68.8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.37; Mon, 20 Mar 2023 19:36:47 -0700 From: Haotien Hsu To: Mathias Nyman , Greg Kroah-Hartman , Thierry Reding , Jonathan Hunter , Philipp Zabel , , , CC: JC Kuo , Wayne Chang , Haotien Hsu Subject: [PATCH v2] usb: xhci: tegra: fix sleep in atomic call Date: Tue, 21 Mar 2023 10:36:36 +0800 Message-ID: <20230321023636.771729-1-haotienh@nvidia.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Originating-IP: [10.126.231.37] X-ClientProxiedBy: rnnvmail201.nvidia.com (10.129.68.8) To rnnvmail201.nvidia.com (10.129.68.8) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM6NAM11FT104:EE_|SJ2PR12MB8926:EE_ X-MS-Office365-Filtering-Correlation-Id: 8d453d9d-a454-4bfa-5255-08db29b526c3 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.117.160;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge1.nvidia.com;CAT:NONE;SFS:(13230025)(4636009)(346002)(376002)(39860400002)(396003)(136003)(451199018)(40470700004)(46966006)(36840700001)(86362001)(356005)(7636003)(36860700001)(82740400003)(36756003)(40480700001)(5660300002)(41300700001)(40460700003)(4326008)(2906002)(8676002)(82310400005)(8936002)(2616005)(336012)(1076003)(186003)(16526019)(83380400001)(110136005)(26005)(47076005)(426003)(70206006)(70586007)(316002)(6666004)(7696005)(107886003)(478600001)(54906003);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Mar 2023 02:37:01.7805 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 8d453d9d-a454-4bfa-5255-08db29b526c3 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT104.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ2PR12MB8926 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FORGED_SPF_HELO, RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_NONE, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1760944323517321236?= X-GMAIL-MSGID: =?utf-8?q?1760944323517321236?= From: Wayne Chang When we set the OTG port to Host mode, we observed the following splat: [ 167.057718] BUG: sleeping function called from invalid context at include/linux/sched/mm.h:229 [ 167.057872] Workqueue: events tegra_xusb_usb_phy_work [ 167.057954] Call trace: [ 167.057962] dump_backtrace+0x0/0x210 [ 167.057996] show_stack+0x30/0x50 [ 167.058020] dump_stack_lvl+0x64/0x84 [ 167.058065] dump_stack+0x14/0x34 [ 167.058100] __might_resched+0x144/0x180 [ 167.058140] __might_sleep+0x64/0xd0 [ 167.058171] slab_pre_alloc_hook.constprop.0+0xa8/0x110 [ 167.058202] __kmalloc_track_caller+0x74/0x2b0 [ 167.058233] kvasprintf+0xa4/0x190 [ 167.058261] kasprintf+0x58/0x90 [ 167.058285] tegra_xusb_find_port_node.isra.0+0x58/0xd0 [ 167.058334] tegra_xusb_find_port+0x38/0xa0 [ 167.058380] tegra_xusb_padctl_get_usb3_companion+0x38/0xd0 [ 167.058430] tegra_xhci_id_notify+0x8c/0x1e0 [ 167.058473] notifier_call_chain+0x88/0x100 [ 167.058506] atomic_notifier_call_chain+0x44/0x70 [ 167.058537] tegra_xusb_usb_phy_work+0x60/0xd0 [ 167.058581] process_one_work+0x1dc/0x4c0 [ 167.058618] worker_thread+0x54/0x410 [ 167.058650] kthread+0x188/0x1b0 [ 167.058672] ret_from_fork+0x10/0x20 The function tegra_xusb_padctl_get_usb3_companion eventually calls tegra_xusb_find_port and this in turn calls kasprintf which might sleep and so cannot be called from an atomic context. Fix this by moving the call to tegra_xusb_padctl_get_usb3_companion to the tegra_xhci_id_work function where it is really needed. Fixes: f836e7843036 ("usb: xhci-tegra: Add OTG support") Cc: stable@vger.kernel.org Signed-off-by: Wayne Chang Signed-off-by: Haotien Hsu --- drivers/usb/host/xhci-tegra.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/usb/host/xhci-tegra.c b/drivers/usb/host/xhci-tegra.c index 1ff22f675930..8dbce2cdb7e4 100644 --- a/drivers/usb/host/xhci-tegra.c +++ b/drivers/usb/host/xhci-tegra.c @@ -2,7 +2,7 @@ /* * NVIDIA Tegra xHCI host controller driver * - * Copyright (c) 2014-2020, NVIDIA CORPORATION. All rights reserved. + * Copyright (c) 2014-2020,2023, NVIDIA CORPORATION. All rights reserved. * Copyright (C) 2014 Google, Inc. */ @@ -1360,6 +1360,10 @@ static void tegra_xhci_id_work(struct work_struct *work) mutex_unlock(&tegra->lock); + tegra->otg_usb3_port = tegra_xusb_padctl_get_usb3_companion( + tegra->padctl, + tegra->otg_usb2_port); + if (tegra->host_mode) { /* switch to host mode */ if (tegra->otg_usb3_port >= 0) { @@ -1474,9 +1478,6 @@ static int tegra_xhci_id_notify(struct notifier_block *nb, } tegra->otg_usb2_port = tegra_xusb_get_usb2_port(tegra, usbphy); - tegra->otg_usb3_port = tegra_xusb_padctl_get_usb3_companion( - tegra->padctl, - tegra->otg_usb2_port); tegra->host_mode = (usbphy->last_event == USB_EVENT_ID) ? true : false;