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 CA338C77B7C for ; Wed, 10 May 2023 09:02:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236862AbjEJJCu (ORCPT ); Wed, 10 May 2023 05:02:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54046 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236146AbjEJJCo (ORCPT ); Wed, 10 May 2023 05:02:44 -0400 Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7B2DDEE; Wed, 10 May 2023 02:02:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1683709363; x=1715245363; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=6C2agmSbZSwTDSfdtmIub+xFb/NojGZUrPYyBA6qtkc=; b=RxkQX5Yx6JEhID6pYTBW5k2CZVuykJPZZq4vt2v3UYw6+mVa6e4Fate0 zDmrHTUxj/qu3W9m7EZ3nzlxWyyaA/Ot6/Ga7TbiI5f8n+VCp0nNQypYd 2xfQq0dpFII9ovkFmXj7k8Iu4Kpd6kwaqOsfXKG4E4PIq5YHac2Mh8vmT ctV+p805aCYauLQSuENLI0rCCdVTyZd+OemYVxhpND3PPvgESu6UuoowL fOdT913yBK1Mk7JP1R/Zo6U6f0OTv3TGKyF16PrMMY9lGEJklVygZ1ME/ LoquwwtBnpihrcu74z8SrtHFC2YJmqOQE9RwQ6xKf5CnskZnrj5yus5zR Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10705"; a="330529930" X-IronPort-AV: E=Sophos;i="5.99,264,1677571200"; d="scan'208";a="330529930" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 May 2023 02:02:34 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10705"; a="1029133060" X-IronPort-AV: E=Sophos;i="5.99,264,1677571200"; d="scan'208";a="1029133060" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga005.fm.intel.com with ESMTP; 10 May 2023 02:02:32 -0700 Received: by black.fi.intel.com (Postfix, from userid 1001) id D88C623E; Wed, 10 May 2023 12:02:41 +0300 (EEST) Date: Wed, 10 May 2023 12:02:41 +0300 From: Mika Westerberg To: wangyouwan@126.com Cc: jarkko.nikula@linux.intel.com, andriy.shevchenko@linux.intel.com, jsd@semihalf.com, linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] i2c: fix crash with msgs is NULL points Message-ID: <20230510090241.GO66750@black.fi.intel.com> References: <20230510084057.17313-1-wangyouwan@126.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20230510084057.17313-1-wangyouwan@126.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, May 10, 2023 at 04:40:57PM +0800, wangyouwan@126.com wrote: > From: youwan Wang > > There is some probability that msgs is empty What probabability 0/100? ;-) Can you point a real case when this can happen?