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 41D84C001E0 for ; Fri, 20 Oct 2023 00:22:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346779AbjJTAWY (ORCPT ); Thu, 19 Oct 2023 20:22:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54648 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346748AbjJTAWY (ORCPT ); Thu, 19 Oct 2023 20:22:24 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 94543A3 for ; Thu, 19 Oct 2023 17:21:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1697761297; 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: in-reply-to:in-reply-to:references:references; bh=8O1DQaljt+H62I0tLGc0kqUm5sOIzb3IYEn38CgT4Vc=; b=bFFR6l6/71XRV8m8Yd+OqjxPUCEU6pNEoLWI8ts38JxlFY/bDTgHvXUSmTERQXds8hhfAz jzzkG7xUvvrDSg34VfBciB4GL7/UBbFFQJn7H+E6Db1Qaxf+WPWBhtKXBUXF5eLlY1VsK/ B1CIdk5G89Rblgh82j9ouz/ICFOEz2s= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-9-bzvGtZerN-G9XP76KmwirQ-1; Thu, 19 Oct 2023 20:21:32 -0400 X-MC-Unique: bzvGtZerN-G9XP76KmwirQ-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 33D3E87A9FD; Fri, 20 Oct 2023 00:21:31 +0000 (UTC) Received: from localhost (unknown [10.72.112.38]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 4AC74111D794; Fri, 20 Oct 2023 00:21:29 +0000 (UTC) Date: Fri, 20 Oct 2023 08:21:26 +0800 From: Baoquan He To: Andrew Morton Cc: Dan Carpenter , Philip Li , oe-kbuild@lists.linux.dev, Lorenzo Stoakes , lkp@intel.com, oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, Linux Memory Management List Subject: Re: mm/vmalloc.c:3689 vread_iter() error: we previously assumed 'vm' could be null (see line 3667) Message-ID: References: <89caf59a-d3b9-409d-b1ae-9e370cb9ee7d@kadam.mountain> <20231018085248.6f3f36101cbdfe0990c8b467@linux-foundation.org> <20231019095030.7a1f3c93bc18511f52524aa8@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20231019095030.7a1f3c93bc18511f52524aa8@linux-foundation.org> X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.3 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/19/23 at 09:50am, Andrew Morton wrote: > On Thu, 19 Oct 2023 10:28:21 +0800 Baoquan He wrote: > > > I think this is not a real runtime bug. The only chance it can hapen is > > when (flags == VMAP_BLOCK) is true. That has been warned and could never > > happen. I updated patch log and paste v2 here. > > Thanks, I updated the changelog in-place. Thanks, Andrew.