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=-2.3 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=ham 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 3654AC4321D for ; Thu, 23 Aug 2018 10:03:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C67BA214FF for ; Thu, 23 Aug 2018 10:03:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="piQLyvK0" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C67BA214FF Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729447AbeHWNch (ORCPT ); Thu, 23 Aug 2018 09:32:37 -0400 Received: from mail-pg1-f170.google.com ([209.85.215.170]:36909 "EHLO mail-pg1-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727346AbeHWNcg (ORCPT ); Thu, 23 Aug 2018 09:32:36 -0400 Received: by mail-pg1-f170.google.com with SMTP id h8-v6so2336793pgs.4 for ; Thu, 23 Aug 2018 03:03:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=4zngk/ovk4zRMNoeFWM7Pgz7CzofGXFpRqP4af0L6kE=; b=piQLyvK0RNd1I84K+KSheGosyzKAta8bbs5ar46IxsYoZ8DHDoqADf/EDxGtbMpBuK Ecog7cAWSnUZWZmZ4hVMMvW0iOFO1of4Hl1iPnqRCYCbl7P8SElp7rZludkBnChhJDGZ jM23QplY16Fx2J7kQ9TKMBSqunw0VrxYGb9MOUvgdh2RBoIeqF1e1TIMingQfg0J5z09 8fw7HzMwqKkl9VXjf3RHnmIyLQormtDyVBHCA5KU4qXiKhxI//fckhsHLW25XoLa6QrD 4k2maF/CxiC+SnuTDI2narxtcYfgoF7AhYZuBRPxJS6BPuwt+WiyqEtx+jvo3MfoiXFo +fdA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=4zngk/ovk4zRMNoeFWM7Pgz7CzofGXFpRqP4af0L6kE=; b=s+a89727L2nYEPy6umRedPiBZ+lt2vKAaia9bbNmCmt/bH+z2ZMeng/Tr8Ah9TQALT 0LUxhrrdUuiTGVgfRZTJmfieylVbRNExsyX012VxPB2kFNaRmWlQgpQxJuxwJ93115pH FI3JsqOnWTqjPvPhds9Vb872tf3bKaiF0NR/kzQ8vNanlhpGctTkU01NnwaYfmMkQT8D wVSFp/f8Wz4UbYfTpAB7dNFcLIJNTVUU83wOTxg71xlKInW78n7v1zH56xsGgTpc9WBH NNfnyizLSBW/MgWwZoEdxF3+W+vfdbeuKjYZXEawL1dMGaFTMfJFNKAZOWVAlw8sc25x 2gZg== X-Gm-Message-State: APzg51DyNflIVBUSBN2VbsvsmoKYi/GgByCkwju4XCJBe2DMjJ5tce1V +xEP9ZQPGKYcWhTdwwvDqvWvXD2jJSo= X-Google-Smtp-Source: ANB0VdaM0mWFxN+Ul0TeCNYgW8DmESbSS2TIePgWyfY2EIPGGq13APd5YykyWFV4axY5YRI3DE6zpw== X-Received: by 2002:a62:1d54:: with SMTP id d81-v6mr9796050pfd.139.1535018619819; Thu, 23 Aug 2018 03:03:39 -0700 (PDT) Received: from dragonet (dragonet.kaist.ac.kr. [143.248.133.220]) by smtp.gmail.com with ESMTPSA id i3-v6sm4264991pgq.35.2018.08.23.03.03.37 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 23 Aug 2018 03:03:39 -0700 (PDT) Date: Thu, 23 Aug 2018 19:03:34 +0900 From: "Dae R. Jeong" To: Minchan Kim Cc: gregkh@linuxfoundation.org, arve@android.com, tkjos@android.com, maco@android.com, devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org Subject: Re: KASAN: null-ptr-deref Write in binder_update_page_range Message-ID: <20180823100334.GA17523@dragonet> References: <20180822060704.GA12007@dragonet> <20180823052956.GA28628@rodete-desktop-imager.corp.google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180823052956.GA28628@rodete-desktop-imager.corp.google.com> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > Could you test this patch? I found that bug a month ago but didn't submit > yet. I don't have a reproducer now. I manually analzed a root cause of the crash using a fuzzer's log. The log reported a race on 'alloc->vma'. Because I don't have a reproducer, I can't test the patch. I'm sorry.