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[209.132.180.67]) by mx.google.com with ESMTP id g137-v6si19690331pfb.34.2018.11.12.00.32.39; Mon, 12 Nov 2018 00:32:54 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=fail header.i=@cumulusnetworks.com header.s=google header.b=F4myLj1J; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=cumulusnetworks.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728109AbeKLSYW (ORCPT + 99 others); Mon, 12 Nov 2018 13:24:22 -0500 Received: from mail-wr1-f67.google.com ([209.85.221.67]:34546 "EHLO mail-wr1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727117AbeKLSYW (ORCPT ); Mon, 12 Nov 2018 13:24:22 -0500 Received: by mail-wr1-f67.google.com with SMTP id j26-v6so8270421wre.1 for ; Mon, 12 Nov 2018 00:32:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cumulusnetworks.com; s=google; h=date:in-reply-to:references:mime-version:content-transfer-encoding :subject:to:from:message-id; bh=Mg6Uxk2gYngckWDv9FiWBXoTzbgw2wyHoktT47rLD04=; b=F4myLj1Jy6JQ/1HTS0kg0Wr78g5lFuKERT9rzfIi7JhlAMbHxH9KaG2bQuu0B/A3O2 ndvNwSPjZkXeKrH34zjYhAmT8TVxGFXhgdE3HPHEKmqR3An5iM5OFAYvSs8y6PEAdqPQ TsMhK/+8YSRLwqfggNcZ+ecxcVCp4ecy387Do= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:references:mime-version :content-transfer-encoding:subject:to:from:message-id; bh=Mg6Uxk2gYngckWDv9FiWBXoTzbgw2wyHoktT47rLD04=; b=NL1jUCHD/XDJYIpDdaxQrCJjLZar0gubV6323e1Vol1smJmnsa1771u31CSP0zCamu vvyIHsrW6nGzBrL6FCHH78Z7gm6xMmIkgMJT6zMwNTeLvgt6p0SCD8cIN66qyhjWFTOB WmzWSEGnSqf4/1nZc4BBxPoWO+z7G7U6Y+A8dOxGUcznJTUQR5vXK7bJhjmddFnBcwRb /xeaAQz5zqKNbS+Vz8/vW5Yg0I7OpjF1oDBSyhNRZwLWTrq7ZA9lM/6NjVWqWPulG6St iDRNt3PkMKanrjp58+OcQPGqeYtdH1rN97ksFOYmKcTHZvtDYQwE0Zgl4Xyn/Wa+BgxK ZGuw== X-Gm-Message-State: AGRZ1gKJYxVFRp1xpf0rNQ0OZwS9DvnXNKox8vCJrkhcYiVN+IAAwG7M jTFmMXxQHygumTiewcivzXm3k4IH1/6nwQ== X-Received: by 2002:adf:9245:: with SMTP id 63-v6mr55675wrj.130.1542011532859; Mon, 12 Nov 2018 00:32:12 -0800 (PST) Received: from localhost ([88.128.80.171]) by smtp.gmail.com with ESMTPSA id w11-v6sm18875313wrr.96.2018.11.12.00.32.11 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 12 Nov 2018 00:32:12 -0800 (PST) Date: Mon, 12 Nov 2018 09:32:08 +0100 In-Reply-To: <00000000000047feb5057a714975@google.com> References: <00000000000047feb5057a714975@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Subject: Re: KASAN: use-after-free Read in nbp_vlan_rcu_free To: syzbot , bridge@lists.linux-foundation.org, davem@davemloft.net, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, roopa@cumulusnetworks.com, syzkaller-bugs@googlegroups.com From: nikolay@cumulusnetworks.com Message-ID: Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12 November 2018 06:51:02 CET, syzbot wrote: >Hello, > >syzbot found the following crash on: > >HEAD commit: e12e00e388de Merge tag 'kbuild-fixes-v4=2E20' of >git://git=2Ek=2E=2E >git tree: upstream >console output: >https://syzkaller=2Eappspot=2Ecom/x/log=2Etxt?x=3D14cdb6f5400000 >kernel config:=20 >https://syzkaller=2Eappspot=2Ecom/x/=2Econfig?x=3D8f215f21f041a0d7 >dashboard link: >https://syzkaller=2Eappspot=2Ecom/bug?extid=3D04681da557a0e49a52e5 >compiler: gcc (GCC) 8=2E0=2E1 20180413 (experimental) > >Unfortunately, I don't have any reproducer for this crash yet=2E > >IMPORTANT: if you fix the bug, please add the following tag to the >commit: >Reported-by: syzbot+04681da557a0e49a52e5@syzkaller=2Eappspotmail=2Ecom Thanks, I'm about to fly out for LPC=2E Will take a look in a day=2E