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=-2.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 4C325C3815B for ; Thu, 16 Apr 2020 00:30:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 21616206D6 for ; Thu, 16 Apr 2020 00:30:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="RnwO9osy" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404085AbgDPAam (ORCPT ); Wed, 15 Apr 2020 20:30:42 -0400 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:49076 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2403969AbgDPAab (ORCPT ); Wed, 15 Apr 2020 20:30:31 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1586997027; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=s4rkdFZCt+CYPzp3/Qg70/GCXwWzZ5opTjJmcpHVXJY=; b=RnwO9osy7m0802mDJB/mLOcITZoZbaq0b6cQ3EsjH1IPjDNHomwAqWlsQ+qdIa5ncG0fS2 I0uAfJ0g9BeJC6izuPQ/ct7yMpqqk6NlP97BVBiU8NKt9O3XzX3AMK++mcPgoTTffFdXBu nSmFbKxYvYnaIzL4G08360NGkH3T60Q= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-441-u5im1Xo4PlegAf8ewrePhg-1; Wed, 15 Apr 2020 20:30:25 -0400 X-MC-Unique: u5im1Xo4PlegAf8ewrePhg-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id B4F9C107ACC9; Thu, 16 Apr 2020 00:30:21 +0000 (UTC) Received: from llong.remote.csb (ovpn-113-213.rdu2.redhat.com [10.10.113.213]) by smtp.corp.redhat.com (Postfix) with ESMTP id 041D15DA66; Thu, 16 Apr 2020 00:30:09 +0000 (UTC) Subject: Re: WARNING in kernfs_create_dir_ns To: syzbot , a@unstable.cc, b.a.t.m.a.n@lists.open-mesh.org, davem@davemloft.net, gregkh@linuxfoundation.org, hdanton@sina.com, hongjiefang@asrmicro.com, linux-kernel@vger.kernel.org, linux-mmc@vger.kernel.org, mareklindner@neomailbox.ch, mingo@kernel.org, netdev@vger.kernel.org, peterz@infradead.org, sw@simonwunderlich.de, syzkaller-bugs@googlegroups.com, tj@kernel.org, ulf.hansson@linaro.org References: <000000000000ba8e5605a35d4465@google.com> From: Waiman Long Organization: Red Hat Message-ID: <894635f4-772e-a28c-1078-be8a5093e351@redhat.com> Date: Wed, 15 Apr 2020 20:30:09 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.2 MIME-Version: 1.0 In-Reply-To: <000000000000ba8e5605a35d4465@google.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Content-Language: en-US X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org #syz fix: locking/lockdep: Reuse freed chain_hlocks entries