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 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 15793C07E97 for ; Sat, 3 Jul 2021 20:24:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D0A326145C for ; Sat, 3 Jul 2021 20:24:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229743AbhGCU0l (ORCPT ); Sat, 3 Jul 2021 16:26:41 -0400 Received: from mail-io1-f70.google.com ([209.85.166.70]:54812 "EHLO mail-io1-f70.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229473AbhGCU0k (ORCPT ); Sat, 3 Jul 2021 16:26:40 -0400 Received: by mail-io1-f70.google.com with SMTP id m14-20020a5d898e0000b02904f7957d92b5so9837705iol.21 for ; Sat, 03 Jul 2021 13:24:06 -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=oyrJ1CYTeS6MI65QD+5aH2xTPa/Zi++jYcDRaJu7lsE=; b=rbF3bW33zIHxrPNxIiKxZiV1SH2rhxPHEcyId/IKg7WMi87r4E8BJaeAS7d2Vewn1y n85vONJLVuw0Y7IXcNtBEEvM7Z8h2O2r+aojvZ91kGxN18+u4JhaSNfj1svCZcqa0EBK zkqONHu7VFqMfRgYb46RRyQlfeWoicV1h0ArrZ9GzZkvnuozNdQb4bXnpfDuIxdk+Ni6 AlMz/uEWF3Y9KIFELLK3L4CFWbUddsqh1xwYs0HIjliZce6MgDGz+6rPTg6UT4AkqDaQ Ayb1cqc3OgNncbjLvFwYhgwAIYebUY1jClYG3Xp0g0Q4kchLom8FXXZYEOBXNdpAYcLj NZ9w== X-Gm-Message-State: AOAM531jCqxoLVVe+b+ZJGGxU1Fa2wg/5E9wcI3NpudpyxxULZMuPsMW 6xIbwDWGUmI3d3fPbl78VbZL0L253gso3acj2HxW0bhyN80G X-Google-Smtp-Source: ABdhPJy1Obdwmm7FKx1IVLqaSnal8I6oxGn9waWDa+O1RRMVRjRDjIm1ulkHkgK++L/LgyxwpUDP8XdYflUhSgnZQiC8byMy1t9R MIME-Version: 1.0 X-Received: by 2002:a05:6638:2512:: with SMTP id v18mr5042352jat.105.1625343846678; Sat, 03 Jul 2021 13:24:06 -0700 (PDT) Date: Sat, 03 Jul 2021 13:24:06 -0700 In-Reply-To: <0000000000000cafda05c639e751@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000009e89e205c63dda94@google.com> Subject: Re: [syzbot] general protection fault in try_grab_compound_head From: syzbot To: akpm@linux-foundation.org, bp@alien8.de, hpa@zytor.com, jmattson@google.com, joro@8bytes.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mark.rutland@arm.com, masahiroy@kernel.org, mingo@redhat.com, pbonzini@redhat.com, peterz@infradead.org, rafael.j.wysocki@intel.com, rostedt@goodmis.org, seanjc@google.com, sedat.dilek@gmail.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, vitor@massaru.org, vkuznets@redhat.com, wanpengli@tencent.com, will@kernel.org, x86@kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org syzbot has bisected this issue to: commit 997acaf6b4b59c6a9c259740312a69ea549cc684 Author: Mark Rutland Date: Mon Jan 11 15:37:07 2021 +0000 lockdep: report broken irq restoration bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16fbcec4300000 start commit: 3dbdb38e Merge branch 'for-5.14' of git://git.kernel.org/p.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=15fbcec4300000 console output: https://syzkaller.appspot.com/x/log.txt?x=11fbcec4300000 kernel config: https://syzkaller.appspot.com/x/.config?x=a1fcf15a09815757 dashboard link: https://syzkaller.appspot.com/bug?extid=a3fcd59df1b372066f5a syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11a856c4300000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1582c9d8300000 Reported-by: syzbot+a3fcd59df1b372066f5a@syzkaller.appspotmail.com Fixes: 997acaf6b4b5 ("lockdep: report broken irq restoration") For information about bisection process see: https://goo.gl/tpsmEJ#bisection