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 BD333C433E7 for ; Fri, 16 Oct 2020 20:33:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5E9F4212CC for ; Fri, 16 Oct 2020 20:33:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2393601AbgJPUdH (ORCPT ); Fri, 16 Oct 2020 16:33:07 -0400 Received: from mail-io1-f70.google.com ([209.85.166.70]:39545 "EHLO mail-io1-f70.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2393322AbgJPUdG (ORCPT ); Fri, 16 Oct 2020 16:33:06 -0400 Received: by mail-io1-f70.google.com with SMTP id s135so2471948ios.6 for ; Fri, 16 Oct 2020 13:33:05 -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=ROzsNmPEboimXBnltYvp0yZ0R4DqKoIDM5mz8ldG/wE=; b=jHoUofxaU8rMiujZSuHgaJVHFGte0Rzqo7W2eMNpk0aE4W+DaqmZmkGcLtzov7yFsh 3e//7i1Ry2vyC9lnx2HsAxsMQh0DGoF+Ey+XBjRiwAVKbrIMdOGa3G/NH3f1DeF/y45y XnMGLiIwb+dC6NEc/xqviG0Kuz7qpglrYt1pTlACLu7gZkpLvOQr9DwNpQaL9f1DSwl2 d58oAzdkIcx8CN6LJLjQS6Iu6I4sWWfqFARYsXOvv++2tAn44vR4z2eZusDYfOWXj8J+ uHvnOMoQH2Nca8pcxHr9DZg/avj/lAcEOlgdFbaYUOS3a2yGw/fI4GX5ergm+U1ToWcO ZlFQ== X-Gm-Message-State: AOAM532Q2mHTqYnkbc7iZDNVP0C59wcZ+vLaGShXUwyb/Bxqw5XoQ2fH 27ylwcfjLi/S397cFJ4byGzWvu2i7TmXWsnuAb9jnfmkp+YI X-Google-Smtp-Source: ABdhPJydD4gCS1GOdiO5MwakOGqV4ls4j0FZtILxVgGqBP7Uc/39/66TxdoYwmTOVK/z73ttFcN08POCtPfnQNumYnXoocxDU7jN MIME-Version: 1.0 X-Received: by 2002:a5e:930d:: with SMTP id k13mr2094900iom.33.1602880385159; Fri, 16 Oct 2020 13:33:05 -0700 (PDT) Date: Fri, 16 Oct 2020 13:33:05 -0700 In-Reply-To: <000000000000e921b305b18ba0a7@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000f9990805b1cfab64@google.com> Subject: Re: BUG: using __this_cpu_read() in preemptible code in trace_hardirqs_on From: syzbot To: linux-kernel@vger.kernel.org, mingo@kernel.org, mingo@redhat.com, netdev@vger.kernel.org, peterz@infradead.org, rostedt@goodmis.org, syzkaller-bugs@googlegroups.com, will@kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org syzbot has bisected this issue to: commit 4d004099a668c41522242aa146a38cc4eb59cb1e Author: Peter Zijlstra Date: Fri Oct 2 09:04:21 2020 +0000 lockdep: Fix lockdep recursion bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=174a766f900000 start commit: 9ff9b0d3 Merge tag 'net-next-5.10' of git://git.kernel.org.. git tree: net-next final oops: https://syzkaller.appspot.com/x/report.txt?x=14ca766f900000 console output: https://syzkaller.appspot.com/x/log.txt?x=10ca766f900000 kernel config: https://syzkaller.appspot.com/x/.config?x=d13c3fa80bc4bcc1 dashboard link: https://syzkaller.appspot.com/bug?extid=53f8ce8bbc07924b6417 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15b63310500000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1565657f900000 Reported-by: syzbot+53f8ce8bbc07924b6417@syzkaller.appspotmail.com Fixes: 4d004099a668 ("lockdep: Fix lockdep recursion") For information about bisection process see: https://goo.gl/tpsmEJ#bisection