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=-0.7 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS autolearn=unavailable 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 5B744C43381 for ; Tue, 19 Mar 2019 20:59:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 26287213F2 for ; Tue, 19 Mar 2019 20:59:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727193AbfCSU7B (ORCPT ); Tue, 19 Mar 2019 16:59:01 -0400 Received: from mail-io1-f72.google.com ([209.85.166.72]:34220 "EHLO mail-io1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726740AbfCSU7B (ORCPT ); Tue, 19 Mar 2019 16:59:01 -0400 Received: by mail-io1-f72.google.com with SMTP id y13so52964iol.1 for ; Tue, 19 Mar 2019 13:59:00 -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=m0aq4As75vm5tiDtlM4tAlAfFHMaZoYC4KZFVQM0p2o=; b=lPbRNe+9T68pJCPWDtrqXEUDnEYXBlmXanCxgqIroWTOekD1zsKGNYUh4+UXX6F5k1 /DgF44y49nJ+lOQvB5DrTUw9AxmsbdcAt4g04/vR4tDiVCzLuZxVbSsFihBoeJC9Oe9Q c7SfquZC1qgSKckT5e5GAP1Jb5onL15u6QdvV7e69xbeLusSfx2nH22YH1FoGesnZITt YPRgbog1l45+cizsDnngrr0b6lxM5lnyPyncp7gfB8jf4hq3AN+Sye/+w0xyyuj1G+/l nGWAktTmjQ6tZaOmYpp+uo0yPEfwlp6EwxNW7WEN0u+FfOgPYJAWVbRMfcJtISF3QNfy 2kOA== X-Gm-Message-State: APjAAAV0CFgX4mJRZfoY+CcLRZEdm1bqwl/bZn3mLp7dTmGVOdzEaj9p Ff+LCtjRZXZjGt3w2lhXZWZ6Wus4tq0nRuoNQ22XgTOxiGQi X-Google-Smtp-Source: APXvYqwXkLFHWGZ8QVHzSvWHwOoE9Tn9Mt3aA+MDPW54EQEGCKIWMOOEMZEAWXiEaRMYHn8SVi72lZ0xIObu/LM0iSFwq1su/Ctg MIME-Version: 1.0 X-Received: by 2002:a6b:7115:: with SMTP id q21mr67424iog.25.1553029140573; Tue, 19 Mar 2019 13:59:00 -0700 (PDT) Date: Tue, 19 Mar 2019 13:59:00 -0700 In-Reply-To: <0000000000007783a2058474a0b9@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000003ff5a5058478c6c4@google.com> Subject: Re: WARNING: suspicious RCU usage in xfrm_alloc_userspi From: syzbot To: davem@davemloft.net, eric.dumazet@gmail.com, fw@strlen.de, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com, suyj.fnst@cn.fujitsu.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has bisected this bug to: commit f10e0010fae8174dc20bdc872bcaa85baa925cb7 Author: Su Yanjun Date: Thu Mar 7 01:54:08 2019 +0000 net: xfrm: Add '_rcu' tag for rcu protected pointer in netns_xfrm bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1644ec8b200000 start commit: f10e0010 net: xfrm: Add '_rcu' tag for rcu protected point.. git tree: linux-next final crash: https://syzkaller.appspot.com/x/report.txt?x=1544ec8b200000 console output: https://syzkaller.appspot.com/x/log.txt?x=1144ec8b200000 kernel config: https://syzkaller.appspot.com/x/.config?x=59cd5d43b5df6955 dashboard link: https://syzkaller.appspot.com/bug?extid=59752237f7ab21c3f3c3 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14e70cb3200000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17292127200000 Reported-by: syzbot+59752237f7ab21c3f3c3@syzkaller.appspotmail.com Fixes: f10e0010 ("net: xfrm: Add '_rcu' tag for rcu protected pointer in netns_xfrm")