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=-8.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 80F18C433B4 for ; Sun, 11 Apr 2021 12:01:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3FCA8610A7 for ; Sun, 11 Apr 2021 12:01:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235423AbhDKMBZ (ORCPT ); Sun, 11 Apr 2021 08:01:25 -0400 Received: from mail-io1-f69.google.com ([209.85.166.69]:45619 "EHLO mail-io1-f69.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232223AbhDKMBU (ORCPT ); Sun, 11 Apr 2021 08:01:20 -0400 Received: by mail-io1-f69.google.com with SMTP id n13so6949959ioh.12 for ; Sun, 11 Apr 2021 05:01:04 -0700 (PDT) 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=LDTjWmZvEWtUCLx2G8NWLUQGZf4eyJlc261DSUtArss=; b=d42Cqa2xexslfIYXpX5+zj4DxsLqWt0q4ZxrezMppLRr9QfePa27XMhljzpvf6hJi+ xlBLtPBLlp2OL+0R8D0OcdfyNDPkg8cPrdJ/NiC/S84zER4DTTf4bIAZrjVyhhpjBtbL FLeKfZfSJB8ypMq46c93lQHaWVuFPqk08ki5mYqvL7miBBiFEAV/GWjVmB49mC/8sn/I mRQ4bKjnaVaOeVb68TlgIupoVhWOxu/OPmLbm4Z59776C/k5EktRR9JQu4LE0SWmc1fT pEhd6gAast3HlCH278bgCGr64BMvpn1Cri4msOM1+79O2mRhRdiSl44O+Ad/vs3lZpoO fgqw== X-Gm-Message-State: AOAM531fKNuM9xiU7tS/WKfKWFCBYQvRpmBJCaCyX8jm6QEDk+wCjxwd POecmQAdkE7Z4psgdVrAFQqERRosoRR9i/TXfyMcZSJcfVKF X-Google-Smtp-Source: ABdhPJyDyqbVyC9mBnLUut7DKqzalFIfytiw7VvqlWdVUVr22Qx+pnaBUnEzBz6/UbxXmD5PMAsFPUDFomYIxpMTQViVD0xC5CXh MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1e0d:: with SMTP id g13mr19341545ila.99.1618142464099; Sun, 11 Apr 2021 05:01:04 -0700 (PDT) Date: Sun, 11 Apr 2021 05:01:04 -0700 In-Reply-To: <00000000000086f79105b5553f1e@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000c4cba105bfb126a1@google.com> Subject: Re: [syzbot] general protection fault in drm_client_buffer_vunmap From: syzbot To: airlied@linux.ie, daniel@ffwll.ch, dri-devel@lists.freedesktop.org, igormtorrente@gmail.com, linux-kernel@vger.kernel.org, maarten.lankhorst@linux.intel.com, mripard@kernel.org, syzkaller-bugs@googlegroups.com, tzimmermann@suse.de, ztong0001@gmail.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot suspects this issue was fixed by commit: commit 874a52f9b693ed8bf7a92b3592a547ce8a684e6f Author: Tong Zhang Date: Sun Feb 28 04:46:25 2021 +0000 drm/fb-helper: only unmap if buffer not null bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10c27b7ed00000 start commit: c03c21ba Merge tag 'keys-misc-20210126' of git://git.kerne.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=ec4c85e44cc3172e dashboard link: https://syzkaller.appspot.com/bug?extid=10328e8428a896b65119 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12d95d7ad00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=148da9ccd00000 If the result looks correct, please mark the issue as fixed by replying with: #syz fix: drm/fb-helper: only unmap if buffer not null For information about bisection process see: https://goo.gl/tpsmEJ#bisection