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=-0.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,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 7A2A5C48BD3 for ; Wed, 26 Jun 2019 22:25:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 50ECC21738 for ; Wed, 26 Jun 2019 22:25:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="H4+gaLab" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726542AbfFZWZC (ORCPT ); Wed, 26 Jun 2019 18:25:02 -0400 Received: from mail-pf1-f194.google.com ([209.85.210.194]:37843 "EHLO mail-pf1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726289AbfFZWZB (ORCPT ); Wed, 26 Jun 2019 18:25:01 -0400 Received: by mail-pf1-f194.google.com with SMTP id 19so158877pfa.4; Wed, 26 Jun 2019 15:25:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:message-id:in-reply-to:references:subject :mime-version:content-transfer-encoding; bh=5oPhE3qEEt+RsciwWt3P6Fjbl5mc7GWFjnz4iQlRxp4=; b=H4+gaLabIccSX6EPGUvDOCU/qUWZUMhDbwijJ4DRhclRYA8njNCIhVON5hmDAmRjyP us29dx6wXrDFhkSBYtZP+QnMwkUxbt/b/NT9soEdmAxHwSGDaPDlwMwZgzNqXvOH3aso 2f9q6yIIHe7gJ8HNtc/aWgiuXhoX0rzuU/K2diGjE5ZK7pdDMd0B1uW+/Dqe1477OhVx IrxhZdW9rbOcpZWyMwh65fNWDmD1Ll6t3XZRsVs/yuRwUQPPont7siNBs5QFWibv8n+w EzcCqvqSOhG2s0daMmj+Bt+KKOTRXLXfDo7Yn5/MIDQw8qOb7G3VrVDpkXXeUeybpeyV P4mA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:message-id:in-reply-to :references:subject:mime-version:content-transfer-encoding; bh=5oPhE3qEEt+RsciwWt3P6Fjbl5mc7GWFjnz4iQlRxp4=; b=AQFuIdwD/VB9c0fhOZI4oHs8xSR5A4FvAkOygd5wihGNyPTU5urT8X5jIeCxVHwqeg 5oarCHHeDfU7fVvhpRfKU+G4OVEDx/nghtIbXnchRlpQAWKZJdIwEDIPhHmOYxh7k1uQ UjdMBUfwc3OqEppaOa8AAm/Z1fWQQGFb1lji/CziRcdSmVfiFM3GRAiwzN/mqd7IbYWz LBcvvGPVsLXKFPrCZo8cdBzOcCRvlMF5Nf6XOhMqx+/cZ6Z2HYR1dHm5WbLguExoDisD NuF5B6G1kw3FatSyTwlOngxsWbAXYZjbAF5T8uks46H5HRxVCJhEEOfeUSRgmKwMcSZX jJPw== X-Gm-Message-State: APjAAAWO2CeTGw8C4BSlRzVjT3DJQtNwExpx0M5Uq1WpOsvCUVTQORv5 FOq4QgSe1yVc6t4q8HPfsic= X-Google-Smtp-Source: APXvYqxmpsROUGAEqYL8EDVOV7OByHymtS0Mqk4ScvgHjMvlv0A3sn919heSyv/nLXtsc2sr0jMmeg== X-Received: by 2002:a63:e40a:: with SMTP id a10mr260601pgi.277.1561587899713; Wed, 26 Jun 2019 15:24:59 -0700 (PDT) Received: from localhost ([67.136.128.119]) by smtp.gmail.com with ESMTPSA id u128sm297015pfu.26.2019.06.26.15.24.59 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Wed, 26 Jun 2019 15:24:59 -0700 (PDT) Date: Wed, 26 Jun 2019 15:24:58 -0700 From: John Fastabend To: Eric Biggers , John Fastabend Cc: syzbot , akpm@linux-foundation.org, ast@kernel.org, cai@lca.pw, crecklin@redhat.com, daniel@iogearbox.net, keescook@chromium.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, netdev@vger.kernel.org, bpf@vger.kernel.org, syzkaller-bugs@googlegroups.com Message-ID: <5d13f0ba3d1aa_25912acd0de805bcce@john-XPS-13-9370.notmuch> In-Reply-To: <20190625234808.GB116876@gmail.com> References: <000000000000e672c6058bd7ee45@google.com> <0000000000007724d6058c2dfc24@google.com> <20190625234808.GB116876@gmail.com> Subject: Re: KASAN: slab-out-of-bounds Write in validate_chain Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Eric Biggers wrote: > Hi John, > > On Tue, Jun 25, 2019 at 04:07:00PM -0700, syzbot wrote: > > syzbot has bisected this bug to: > > > > commit e9db4ef6bf4ca9894bb324c76e01b8f1a16b2650 > > Author: John Fastabend > > Date: Sat Jun 30 13:17:47 2018 +0000 > > > > bpf: sockhash fix omitted bucket lock in sock_close > > > > Are you working on this? This is the 6th open syzbot report that has been > bisected to this commit, and I suspect it's the cause of many of the other > 30 open syzbot reports I assigned to the bpf subsystem too > (https://lore.kernel.org/bpf/20190624050114.GA30702@sol.localdomain/). > > Also, this is happening in mainline (v5.2-rc6). > > - Eric Should have a fix today. It seems syzbot has found this bug repeatedly. .John