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=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,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 6A41AC4321D for ; Mon, 20 Aug 2018 06:04:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0D0DB20BED for ; Mon, 20 Aug 2018 06:04:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="U5QMpptK" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0D0DB20BED Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726192AbeHTJSh (ORCPT ); Mon, 20 Aug 2018 05:18:37 -0400 Received: from mail-vk0-f54.google.com ([209.85.213.54]:43135 "EHLO mail-vk0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725948AbeHTJSh (ORCPT ); Mon, 20 Aug 2018 05:18:37 -0400 Received: by mail-vk0-f54.google.com with SMTP id s17-v6so5943461vke.10; Sun, 19 Aug 2018 23:04:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:reply-to:in-reply-to:references:from:date:message-id :subject:to:cc; bh=/2O5FM9aVCXtcJKq3syyRUT/XQdA3VN/YLeLc1UB+Q4=; b=U5QMpptK8s0Dlt1cT4WbwPoFGSsEw9jexaDa9kzI836ieRN8WMtP6oRXNQFvXncQIs Xe3zuqIKgY63LOeArhhXzxNymbEMmYKaXvjXyjv25tBkzZm23gFnbZGVTSZ1C6/7/1wC Bl6Muad5Hm0FV70IVeYGzsZ4SdnYJOvlGs2ZcX0W3AIYTrY7SC/d3zAJfzTZcJ0pVixb a1IJKGhVLo4WiwxPG5H/RRQ+d8yLqYqI+rog+L3qWTubVmjlfmVz+JQQvQ/TaHmaFZvK 8Ls6sSmh9zrA5qH2tvXcks3JpE7+rmYAzgtRQeAQrzhqjd3M4qysGrrP4KvGXMW/vMni pSUQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:reply-to:in-reply-to:references :from:date:message-id:subject:to:cc; bh=/2O5FM9aVCXtcJKq3syyRUT/XQdA3VN/YLeLc1UB+Q4=; b=lPs5zVhjX8iJ39Kdd2b3Egs4Lm4HOtzAXeO5yV9wqZj59ZYSIAohXcX9XVddzV1AiA pRtfpikixfgUfV50sxQRkYSMyRkLwWSdjghWH8xbtji2kGhOzgM3xIEQcSZpyYOOQljf ZJV71Qz3mzGgAJJcxJh+bomrWyv99lmn5Q5TZ+AmxWzalUBJgrx29NE9dYfiwVBEItSf CthaHJa3x/qicLiTF/T83A3klopYcg115Orasubbi8bj2rm5WUuvTPC4RL1swvA2spC8 T15pUQhCIAvWjMAbft9D8uPOwPr1DuWHXj2Oz8a7+7sOz0AR/mTK1NwrryTrXSKM3BOc tvLQ== X-Gm-Message-State: AOUpUlGLDsJtsHCAlODyq4uH8vKy1NApvYhi8Nu9vCu39QDvet18hsEJ 1IGmLozT7hyBdZ6sYEVUFd2v1T5l7mj++1WMPQ== X-Google-Smtp-Source: AA+uWPyb3H+SUJ4V5PkqJGMYPhK6julyIbR00fHNCxj+O3UnXoz1l6qXDLnhM6Qf7w7HRJxYcInES3xxQ10iJdpD3S8= X-Received: by 2002:a1f:844e:: with SMTP id g75-v6mr29468062vkd.16.1534745059676; Sun, 19 Aug 2018 23:04:19 -0700 (PDT) MIME-Version: 1.0 Received: by 2002:a67:e915:0:0:0:0:0 with HTTP; Sun, 19 Aug 2018 23:03:59 -0700 (PDT) Reply-To: whiteheadm@acm.org In-Reply-To: References: From: tedheadster Date: Mon, 20 Aug 2018 02:03:59 -0400 Message-ID: Subject: Re: Allocation failure with subsequent kernel crash To: Alexei Starovoitov Cc: LKML , Network Development , Ingo Molnar , Thomas Gleixner , Alexei Starovoitov , Daniel Borkmann Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Aug 20, 2018 at 1:22 AM, Alexei Starovoitov wrote: > I don't remember vzalloc issues that was fixed in this area. > 4.14 kernel is quite old. Since then syzbot found few mem > related bugs that were fixed. > please try to reproduce on the latest tree. Alexei, I get this panic with two very recent kernels: 4.18.0 and 4.17.14. I do not think this has been fixed. I am still trying to bisect it, but sometimes it takes 5 hours for the panic to occur. - Matthew Whitehead