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[209.132.180.67]) by mx.google.com with ESMTP id h1si7266547eds.434.2019.11.06.07.23.16; Wed, 06 Nov 2019 07:23:39 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731905AbfKFPUD (ORCPT + 99 others); Wed, 6 Nov 2019 10:20:03 -0500 Received: from mail-io1-f72.google.com ([209.85.166.72]:45681 "EHLO mail-io1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727202AbfKFPUC (ORCPT ); Wed, 6 Nov 2019 10:20:02 -0500 Received: by mail-io1-f72.google.com with SMTP id c17so15084349ioh.12 for ; Wed, 06 Nov 2019 07:20:00 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=QbobwaWWXn01psZxrEEOIRgurZbAVL2YBBMKCRdbKg0=; b=KxUFSSzDbnbumcL/GgIbQfN8spPRIaGbAzIFK24L096iugRWUzA5IvxeE12LAse5fs PyOW2k0XCpFX7ltH9So79rFH9Xpab1stPXycKBDwkfvY0t08ORwy7C9kE482BICQBCCw 2/n+aVXKuDwL8DRAirFC+Dv3xo+9hFIX/WUf/xdGTG4JLzfy1BxfTZgsDD4FOuF8vOAf iDKiAmjXdw3FccI06dqdJDWaO51CkjS159an+gTyWNQsORBPJhYdj+1Gj62w7bdBkxNj 2OQ/cQPUbC9H656wtH+lcAkBw1ZJ07Dks+/I8WE1cFI2+CqZA32dplun7IeXSVUjBDMP Tnuw== X-Gm-Message-State: APjAAAUsQxJlpF/GHvrMYZw2Clzg/ug6TVCpJSL3NqCgJBHNxYPsT3Uy R2CaUW0kLtac+7UfdIB8SGlmPJq33qZ2x6Drk1o/qVIuuKvj MIME-Version: 1.0 X-Received: by 2002:a92:8c92:: with SMTP id s18mr3258760ill.2.1573053600559; Wed, 06 Nov 2019 07:20:00 -0800 (PST) Date: Wed, 06 Nov 2019 07:20:00 -0800 In-Reply-To: <000000000000b2de3a0594d8b4ca@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000012ff570596af15cc@google.com> Subject: Re: WARNING in drm_mode_createblob_ioctl From: syzbot To: airlied@linux.ie, akpm@linux-foundation.org, daniel@ffwll.ch, dri-devel@lists.freedesktop.org, dvyukov@google.com, keescook@chromium.org, linux-kernel@vger.kernel.org, maarten.lankhorst@linux.intel.com, mripard@kernel.org, sean@poorly.run, sfr@canb.auug.org.au, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has bisected this bug to: commit 9e5a64c71b2f70ba530f8156046dd7dfb8a7a0ba Author: Kees Cook Date: Mon Nov 4 22:57:23 2019 +0000 uaccess: disallow > INT_MAX copy sizes bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=125fe6dce00000 start commit: 51309b9d Add linux-next specific files for 20191105 git tree: linux-next final crash: https://syzkaller.appspot.com/x/report.txt?x=115fe6dce00000 console output: https://syzkaller.appspot.com/x/log.txt?x=165fe6dce00000 kernel config: https://syzkaller.appspot.com/x/.config?x=a9b1a641c1f1fc52 dashboard link: https://syzkaller.appspot.com/bug?extid=fb77e97ebf0612ee6914 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1212dc3ae00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=145f604ae00000 Reported-by: syzbot+fb77e97ebf0612ee6914@syzkaller.appspotmail.com Fixes: 9e5a64c71b2f ("uaccess: disallow > INT_MAX copy sizes") For information about bisection process see: https://goo.gl/tpsmEJ#bisection