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 3133BC433DF for ; Tue, 20 Oct 2020 06:48:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D96782237B for ; Tue, 20 Oct 2020 06:48:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404549AbgJTGsH (ORCPT ); Tue, 20 Oct 2020 02:48:07 -0400 Received: from mail-il1-f199.google.com ([209.85.166.199]:39234 "EHLO mail-il1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404540AbgJTGsG (ORCPT ); Tue, 20 Oct 2020 02:48:06 -0400 Received: by mail-il1-f199.google.com with SMTP id b6so1106797ilm.6 for ; Mon, 19 Oct 2020 23:48:06 -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=xoUgzEnPQ6/X80FmYbYW0/0mCz5nmTUL7rKcid47d28=; b=fJJOc2khO9CqYqjsMJrjBJK2kITw6i/GyECVtAuQjnOngkq0Mf8jloQGaQdS+fWvYR S801v+e6jMVd+xDJxhz8A5bCOEsbvUZr6gAH8KiTKrubunGqBJ3kwBKdfPQp5FsjKxG/ oD0CF62hPLKVXB6uziWVAMBDMsSwaBobK0h2TLdurmEnk+utfF+oHFkjYc29tGdQL9Ii Wm1gSQmQli5eCfBD8XjTKiG49KS+Grfcb0JkfimSyJsS3h3Z3IMU/My/DeAQ/H6b/pmF BCIBZTgqQ3neFNf2LxsioWNF7q/kQjJUarAwE1PQWeqkXg5vzF0kgBaxS8uWdAFKJ1WP 7ysA== X-Gm-Message-State: AOAM530njB03CgR7LKbNi6WrPUxERocFP/kjvWopmZMgsbXnmQ4wWC34 8RmSpIQl/HU8D5BIqCTs1eI/WYMh5HeALHQCtvt+l1KUyHr/ X-Google-Smtp-Source: ABdhPJyGMNov82rgny3Yeg72erq1MjQrtHmagsPQohT0VIL9IxEQU8WhTJSlS7CKYOXFkxq0a20bZYFdJkYVTr/yvtrHpzZZH3hB MIME-Version: 1.0 X-Received: by 2002:a92:a307:: with SMTP id a7mr824391ili.97.1603176485856; Mon, 19 Oct 2020 23:48:05 -0700 (PDT) Date: Mon, 19 Oct 2020 23:48:05 -0700 In-Reply-To: <0000000000009dd95205a7b7f3bf@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000f3ad7805b2149c19@google.com> Subject: Re: general protection fault in __switch_to_asm From: syzbot To: akpm@linux-foundation.org, bp@alien8.de, daniel.vetter@ffwll.ch, ggherdovich@suse.cz, gregkh@linuxfoundation.org, hpa@zytor.com, linux-kernel@vger.kernel.org, linux@dominikbrodowski.net, mhiramat@kernel.org, mingo@redhat.com, penguin-kernel@I-love.SAKURA.ne.jp, penguin-kernel@i-love.sakura.ne.jp, peterz@infradead.org, rafael.j.wysocki@intel.com, rkovhaev@gmail.com, rostedt@goodmis.org, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, x86@kernel.org 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 033724d6864245a11f8e04c066002e6ad22b3fd0 Author: Tetsuo Handa Date: Wed Jul 15 01:51:02 2020 +0000 fbdev: Detect integer underflow at "struct fbcon_ops"->clear_margins. bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=17f3766f900000 start commit: 04300d66 Merge tag 'riscv-for-linus-5.8-rc7' of git://git... git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=f87a5e4232fdb267 dashboard link: https://syzkaller.appspot.com/bug?extid=fe6eeea133f070606074 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1575d102900000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15dd6ac0900000 If the result looks correct, please mark the issue as fixed by replying with: #syz fix: fbdev: Detect integer underflow at "struct fbcon_ops"->clear_margins. For information about bisection process see: https://goo.gl/tpsmEJ#bisection