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=-8.6 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_PASS,URIBL_BLOCKED,USER_IN_DEF_DKIM_WL 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 A3A10C10F0F for ; Fri, 5 Apr 2019 12:36:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 733F921738 for ; Fri, 5 Apr 2019 12:36:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="QSRkGaPl" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730243AbfDEMgd (ORCPT ); Fri, 5 Apr 2019 08:36:33 -0400 Received: from mail-it1-f194.google.com ([209.85.166.194]:52983 "EHLO mail-it1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726027AbfDEMgc (ORCPT ); Fri, 5 Apr 2019 08:36:32 -0400 Received: by mail-it1-f194.google.com with SMTP id x132so9150460itf.2 for ; Fri, 05 Apr 2019 05:36:32 -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=KiJg70GvckL+n0CcPjFwPts1fFJWjS2/ayIe1LKyLXo=; b=QSRkGaPlDD7tz1s32kaKWDx+oEK+CXrs2ZFwafVZYK958PLekvt5DoIKN9sSGXNpDR ue5k8pnbklaeG5+Z/z18iRK7XgHHH38y1Xg+6UW7mJaeCmtOcNvvy+fYHdAnGjvTIXBy tnpgciI7wWQ9kiSNn6hxWFsA+HrKvlYEHuW9BwNrjcq7t/7LmH9uXMLyVqwpPxV2kEW+ uxRlNHHao5shlz4X6XQAGosIZKM6O7xl9on0LuOqczXQaulwIwJPZRycHmRGgo7Hvu7J 6mSBh+0lqasAeXXXbp29ZtkBbTLDLsgXwZxxvO+eHNhndefsCQCq3BHNPC0CTIYwZZql dZfw== 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=KiJg70GvckL+n0CcPjFwPts1fFJWjS2/ayIe1LKyLXo=; b=rAlZHxor53QDR2oPDZqLFWYDVz78bmYznLSo4A5mw7UUyS++QcFI6XPyXdt/v3nz3d IVelYCQX40XSX2SYJhuUzTVWdxwb/SSOk/RXjWzM0MFeBEiOFRTxt7/PHjLrxuqcdpku tuJFOhPlTbRmICzwmqSLT0cUKTK1n4N9qCOVeDKQVUBUdKgWgmZ6UZvztyoM7JrZ9oGv ImDNpL1QUgKcz/JQW3EZ43wt85qWQhPQsOqTsrhIG+BdFBO/XPhPbJ0sY9R8TjbGrRRr Fw6lzBQ5IKCL6Ssvj021f0/gH2K4VxlqNHVGnbjzZV8q2j/phS7R14yid9ffyTEE6axN vX/w== X-Gm-Message-State: APjAAAWdzbPnfnJC83/ncR3iA3uB6bpEWiwTGNJN8HlyfzFCq9D9dXry ETyr5AwQaipA+AF+vdzi+FOUssyZhj1mk31/FjYzxg== X-Google-Smtp-Source: APXvYqzmcn+CV+tb4tqriGkXeFclzJvKggx13DxoQEiFlTqGIBp1D+pbCmoP8wmBPppNjwn54g7z/rrCWkSIFRuxXaU= X-Received: by 2002:a02:8c59:: with SMTP id j25mr9228424jal.4.1554467791465; Fri, 05 Apr 2019 05:36:31 -0700 (PDT) MIME-Version: 1.0 References: <000000000000e02450058593df62@google.com> <000000000000db3c59058595f0ac@google.com> <20190405100850.tojfhy3ob5gprwo7@breakpoint.cc> In-Reply-To: <20190405100850.tojfhy3ob5gprwo7@breakpoint.cc> From: Dmitry Vyukov Date: Fri, 5 Apr 2019 14:36:20 +0200 Message-ID: Subject: Re: BUG: using __this_cpu_read() in preemptible code in ip6_finish_output To: Florian Westphal Cc: Krzysztof Kozlowski , Alexander Duyck , amritha.nambiar@intel.com, Alexei Starovoitov , bpf , Daniel Borkmann , David Miller , Edward Cree , Ido Schimmel , Jiri Pirko , Martin KaFai Lau , Alexey Kuznetsov , LKML , Li RongQing , netdev , petrm@mellanox.com, Sabrina Dubroca , Song Liu , syzkaller-bugs , Yonghong Song , Hideaki YOSHIFUJI 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 Fri, Apr 5, 2019 at 12:09 PM Florian Westphal wrote: > > Krzysztof Kozlowski wrote: > > On Wed, 3 Apr 2019 at 03:14, syzbot > > wrote: > > > > > > syzbot has bisected this bug to: > > > > > > commit 97cdcf37b57e3f204be3000b9eab9686f38b4356 > > > Author: Florian Westphal > > > Date: Mon Apr 1 14:42:13 2019 +0000 > > > > > > net: place xmit recursion in softnet data > > > > I am seeing this as well on ARMv7 board booted from NFS root (exynos_defconfig): > > Sorry about this, the fix is now in net-next though: > 28b05b92886871bdd ("net: use correct this_cpu primitive in dev_recursion_level") Krzysztof, just in case, you can see the current bug status on dashboard as well. E.g. for this one it says: Fix commit: net: use correct this_cpu primitive in dev_recursion_level