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=-10.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS 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 1901FC64E7A for ; Tue, 1 Dec 2020 14:05:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B032F20857 for ; Tue, 1 Dec 2020 14:05:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=walle.cc header.i=@walle.cc header.b="vhNuVUhQ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391514AbgLAOFM (ORCPT ); Tue, 1 Dec 2020 09:05:12 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42252 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388154AbgLAOFL (ORCPT ); Tue, 1 Dec 2020 09:05:11 -0500 Received: from ssl.serverraum.org (ssl.serverraum.org [IPv6:2a01:4f8:151:8464::1:2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9D0C1C0617A6; Tue, 1 Dec 2020 06:04:31 -0800 (PST) Received: from ssl.serverraum.org (web.serverraum.org [172.16.0.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ssl.serverraum.org (Postfix) with ESMTPSA id DD61922FAD; Tue, 1 Dec 2020 15:04:27 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=walle.cc; s=mail2016061301; t=1606831468; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=LgcoC/q7pyVkhvpyWhlU5Ne9ks4PahNRgu8btRatkvU=; b=vhNuVUhQMRWHcrhJL1c/FP27Jc9RIFUipGXA9bN/oNhXtF8MUpxKyJWjyZZLuKP/guYVZV haLXNuHV/E46uR3wbwfez76Bp2QXCJnLdEiAjtwIfHcyoe68AgPHEEa+/Xf5pYxCeL3C0T dekf0bmKFc5vyb/4UvklIc0JAQp9B3w= MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Date: Tue, 01 Dec 2020 15:04:27 +0100 From: Michael Walle To: Mark Brown Cc: linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org, Vladimir Oltean , Krzysztof Kozlowski , Sascha Hauer Subject: Re: [PATCH v3] spi: fsl-dspi: fix NULL pointer dereference In-Reply-To: <160683107674.35139.13937083243515034859.b4-ty@kernel.org> References: <20200928085500.28254-1-michael@walle.cc> <160683107674.35139.13937083243515034859.b4-ty@kernel.org> User-Agent: Roundcube Webmail/1.4.9 Message-ID: X-Sender: michael@walle.cc Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Mark, Am 2020-12-01 14:57, schrieb Mark Brown: > On Mon, 28 Sep 2020 10:55:00 +0200, Michael Walle wrote: >> Since commit 530b5affc675 ("spi: fsl-dspi: fix use-after-free in >> remove >> path") this driver causes a kernel oops: >> >> [ 1.891065] Unable to handle kernel NULL pointer dereference at >> virtual address 0000000000000080 >> [..] >> [ 2.056973] Call trace: >> [ 2.059425] dspi_setup+0xc8/0x2e0 >> [ 2.062837] spi_setup+0xcc/0x248 >> [ 2.066160] spi_add_device+0xb4/0x198 >> [ 2.069918] of_register_spi_device+0x250/0x370 >> [ 2.074462] spi_register_controller+0x4f4/0x770 >> [ 2.079094] dspi_probe+0x5bc/0x7b0 >> [ 2.082594] platform_drv_probe+0x5c/0xb0 >> [ 2.086615] really_probe+0xec/0x3c0 >> [ 2.090200] driver_probe_device+0x60/0xc0 >> [ 2.094308] device_driver_attach+0x7c/0x88 >> [ 2.098503] __driver_attach+0x60/0xe8 >> [ 2.102263] bus_for_each_dev+0x7c/0xd0 >> [ 2.106109] driver_attach+0x2c/0x38 >> [ 2.109692] bus_add_driver+0x194/0x1f8 >> [ 2.113538] driver_register+0x6c/0x128 >> [ 2.117385] __platform_driver_register+0x50/0x60 >> [ 2.122105] fsl_dspi_driver_init+0x24/0x30 >> [ 2.126302] do_one_initcall+0x54/0x2d0 >> [ 2.130149] kernel_init_freeable+0x1ec/0x258 >> [ 2.134520] kernel_init+0x1c/0x120 >> [ 2.138018] ret_from_fork+0x10/0x34 >> [ 2.141606] Code: 97e0b11d aa0003f3 b4000680 f94006e0 (f9404000) >> [ 2.147723] ---[ end trace 26cf63e6cbba33a8 ]--- >> >> [...] > > Applied to > > https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git > for-next Is that correct? Some time ago you've already applied that to your spi tree: https://lore.kernel.org/linux-spi/160132174502.55568.11234605078950751454.b4-ty@kernel.org/ -michael