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=-8.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 93A1EC43461 for ; Fri, 11 Sep 2020 20:53:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 40A1C221EB for ; Fri, 11 Sep 2020 20:53:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725863AbgIKUxM (ORCPT ); Fri, 11 Sep 2020 16:53:12 -0400 Received: from mail-il1-f198.google.com ([209.85.166.198]:44145 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725844AbgIKUxG (ORCPT ); Fri, 11 Sep 2020 16:53:06 -0400 Received: by mail-il1-f198.google.com with SMTP id j11so8068934ilr.11 for ; Fri, 11 Sep 2020 13:53:05 -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=YVXF1g4+lOmnjRf2AcTsASLYPgunWmQEGdeWgbAB0oo=; b=OjnF9Aeenf/IJ9yHXMwmHKcBrnnQ63A8HgEKb65xqlCELSAWN6q5jzsXthVc6HHj/i /haSLg6x/+bCAkwIJ/MEd8J9Yw0oHBGsFQP5hwuiQrjSXlwoJ4mS5nO+dcUQ3gCGSnmR ihayYq2UeoEE7/p+xIbqI92R8IUe+ddpNoTuar+j2AHWdiu8qhWH4zuUVf+D/A8fj85t jnTocU2T3pVQx35vqll0W/LK/e8dF2d8C5kwt7t75Zid/q1gd64Flf3y/WTgbTnD1/hP 2/HQglEQ4WWhuoE48ON6uy8vVTX9zIv1MSzm130jqW+umS44TwMWtbr2SCtI3EKU/vQJ x5YA== X-Gm-Message-State: AOAM533J43DO7D+LYdBplynFaeI7Xb30QD7qYNUnzH+ZRsLqpNJ74O+0 ZyXYZXOGsoJ2/VPEjBK3nWtzQcGt/qLDIBq354KqLMratoo/ X-Google-Smtp-Source: ABdhPJxvuILFl1zVwslz3rOXPBUJrgVwPlDzIfXnq3TUXyLZVXcmchDm7ZTsSvK4buPOgx+5ucO7SLVwjQCZGdi+a624IWfjO167 MIME-Version: 1.0 X-Received: by 2002:a92:8709:: with SMTP id m9mr3488137ild.242.1599857585493; Fri, 11 Sep 2020 13:53:05 -0700 (PDT) Date: Fri, 11 Sep 2020 13:53:05 -0700 In-Reply-To: <20200911181939.GA1221970@ziepe.ca> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000131cf405af0fdfd0@google.com> Subject: Re: KASAN: use-after-free Read in ucma_close (2) From: syzbot To: dledford@redhat.com, jgg@ziepe.ca, leon@kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, syzkaller-bugs@googlegroups.com 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 Hello, syzbot has tested the proposed patch and the reproducer did not trigger any issue: Reported-and-tested-by: syzbot+cc6fc752b3819e082d0c@syzkaller.appspotmail.com Tested on: commit: 7c003f9a RDMA/ucma: Rework ucma_migrate_id() to avoid race.. git tree: https://github.com/jgunthorpe/linux ucma_migrate_fix kernel config: https://syzkaller.appspot.com/x/.config?x=3c5f6ce8d5b68299 dashboard link: https://syzkaller.appspot.com/bug?extid=cc6fc752b3819e082d0c compiler: gcc (GCC) 10.1.0-syz 20200507 Note: testing is done by a robot and is best-effort only.