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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9B978C4332F for ; Thu, 8 Dec 2022 08:44:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229988AbiLHIoL (ORCPT ); Thu, 8 Dec 2022 03:44:11 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45184 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229888AbiLHIoE (ORCPT ); Thu, 8 Dec 2022 03:44:04 -0500 Received: from wp530.webpack.hosteurope.de (wp530.webpack.hosteurope.de [80.237.130.52]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 411FDCDC; Thu, 8 Dec 2022 00:44:03 -0800 (PST) Received: from [2a02:8108:963f:de38:eca4:7d19:f9a2:22c5]; authenticated by wp530.webpack.hosteurope.de running ExIM with esmtpsa (TLS1.3:ECDHE_RSA_AES_128_GCM_SHA256:128) id 1p3CVd-0005TO-LV; Thu, 08 Dec 2022 09:44:01 +0100 Message-ID: <96ee7141-f09c-4df9-015b-6ae8f3588091@leemhuis.info> Date: Thu, 8 Dec 2022 09:44:01 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.5.1 Subject: Re: BUG: unable to handle kernel paging request in bpf_dispatcher_xdp #forregzbot Content-Language: en-US, de-DE To: bpf , "regressions@lists.linux.dev" Cc: Linux Kernel Mailing List , netdev References: From: Thorsten Leemhuis In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-bounce-key: webpack.hosteurope.de;regressions@leemhuis.info;1670489043;d88ccd6f; X-HE-SMSGID: 1p3CVd-0005TO-LV Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org [Note: this mail contains only information for Linux kernel regression tracking. Mails like these contain '#forregzbot' in the subject to make then easy to spot and filter out. The author also tried to remove most or all individuals from the list of recipients to spare them the hassle.] On 06.12.22 04:28, Hao Sun wrote: > > The following crash can be triggered with the BPF prog provided. > It seems the verifier passed some invalid progs. I will try to simplify > the C reproducer, for now, the following can reproduce this: Thanks for the report. To be sure below issue doesn't fall through the cracks unnoticed, I'm adding it to regzbot, my Linux kernel regression tracking bot: #regzbot ^introduced c86df29d11df #regzbot title net/bpf: BUG: unable to handle kernel paging request in bpf_dispatcher_xdp #regzbot ignore-activity Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat) P.S.: As the Linux kernel's regression tracker I deal with a lot of reports and sometimes miss something important when writing mails like this. If that's the case here, don't hesitate to tell me in a public reply, it's in everyone's interest to set the public record straight.