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=-13.2 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_IN_DEF_DKIM_WL autolearn=no 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 3B3A5C433B4 for ; Tue, 13 Apr 2021 07:57:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 15228613B8 for ; Tue, 13 Apr 2021 07:57:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241731AbhDMH6D (ORCPT ); Tue, 13 Apr 2021 03:58:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57540 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241607AbhDMH56 (ORCPT ); Tue, 13 Apr 2021 03:57:58 -0400 Received: from mail-qk1-x72c.google.com (mail-qk1-x72c.google.com [IPv6:2607:f8b0:4864:20::72c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 178C9C06175F for ; Tue, 13 Apr 2021 00:57:38 -0700 (PDT) Received: by mail-qk1-x72c.google.com with SMTP id 18so138731qkl.3 for ; Tue, 13 Apr 2021 00:57:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=v5+J2bw3iz0Zd+e+lzu2Qo4E0AM0dkQGDSzLnSvZvy8=; b=UeZk+RiCWOC7JzxfKx3yG2cydgBtlZe/1uejtnF2xNqDmGDcNuEZ7EWdrLLtf952pZ TMknEiK+XX8+TDgABXQ0W6jCrHb38B53AGoe0RygEiyoUfy29wB5i0e3K2jT8rQDIl8l ZbMe/h14O6lherBFHDwEXREbR05vy7VITvEdWkKpHFS7+rKoiehzsm//anB/UGwZIT/Z +rtrJmxi9XEmTshzP4Lb0KxSZyS74VXC/v0zZVombQRZKV/pKCcKZ+vJL/jEl4X3sMwT EhnMDchYe2NHaL8A0OI+NDCW4n6vcl5gXg4DQ1gtZvXw2gS4l1S0KThEfPZCB6NMouT+ TMmw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=v5+J2bw3iz0Zd+e+lzu2Qo4E0AM0dkQGDSzLnSvZvy8=; b=rHUpnQRQidhkhnZHDmBAVw+UuXodPk65vpcZ78BcBz4YFDK66ovF3v342p63bzIq9N 5fi+GnEaN3Ms2Ei1RE62uzjxNX82qdKWlqpk3Mx4WLaJVxEUQYTNdQDzOi0JoL4y3XpV mSL7GPyYBwCm3darT9RE1Dz2T3tYac5io6iEe/+wbeua3Bw6E84VbyJMZ1nugRbLXqph P+ppMwYiCyjRQpCkxbbbqVyikBt8j5s5BeFpI5MfaEi1vWE9YXYHEWhYELv7rfJERYkq cHy+daO6sBTxRyAPTuVSzda84JndBym+xtHiUwXnEGMcb3Byea8rgn0+pJeF78KDL070 HmjA== X-Gm-Message-State: AOAM5339mmLD+3yZGLmlnwYHLEx5fxqsTMpcdXf5XGFVbf6bTB4FP23K Ymf6EKaGGfv4ThwsVcZ+XnmKXdHJa/TlsG8nZCWBlQ== X-Google-Smtp-Source: ABdhPJwmtYlYZsMa2hF3X+4S3UYYT7bEmTeyHKp2IMqH7S4yesxoBZaPruLYG7pF0rHfjIIruZRgYqgIQzZGzlPSX08= X-Received: by 2002:a05:620a:243:: with SMTP id q3mr11958116qkn.501.1618300657089; Tue, 13 Apr 2021 00:57:37 -0700 (PDT) MIME-Version: 1.0 References: <000000000000680f2905afd0649c@google.com> <000000000000043f2c05beed04d8@google.com> In-Reply-To: <000000000000043f2c05beed04d8@google.com> From: Dmitry Vyukov Date: Tue, 13 Apr 2021 09:57:26 +0200 Message-ID: Subject: Re: [syzbot] BUG: unable to handle kernel paging request in bpf_trace_run2 To: syzbot Cc: andrii@kernel.org, Andrii Nakryiko , Alexei Starovoitov , bpf , Jonathan Corbet , Daniel Borkmann , David Miller , David Ahern , Jesper Dangaard Brouer , John Fastabend , Martin KaFai Lau , KP Singh , kpsingh@kernel.org, Jakub Kicinski , "open list:DOCUMENTATION" , LKML , Mathieu Desnoyers , Ingo Molnar , Ingo Molnar , mmullins@mmlx.us, netdev , Peter Zijlstra , Steven Rostedt , Song Liu , syzkaller-bugs , Yonghong Song Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Apr 1, 2021 at 8:01 PM syzbot wrote: > > syzbot suspects this issue was fixed by commit: > > commit befe6d946551d65cddbd32b9cb0170b0249fd5ed > Author: Steven Rostedt (VMware) > Date: Wed Nov 18 14:34:05 2020 +0000 > > tracepoint: Do not fail unregistering a probe due to memory failure > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=14f0260ed00000 > start commit: 12450081 libbpf: Fix native endian assumption when parsing.. > git tree: bpf > kernel config: https://syzkaller.appspot.com/x/.config?x=5ac0d21536db480b > dashboard link: https://syzkaller.appspot.com/bug?extid=cc36fd07553c0512f5f7 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1365d2c3900000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16d5f08d900000 > > If the result looks correct, please mark the issue as fixed by replying with: > > #syz fix: tracepoint: Do not fail unregistering a probe due to memory failure > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection Looks reasonable: #syz fix: tracepoint: Do not fail unregistering a probe due to memory failure