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=ham 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 853FBC433E2 for ; Fri, 11 Sep 2020 20:53:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 31BC422207 for ; Fri, 11 Sep 2020 20:53:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725842AbgIKUxJ (ORCPT ); Fri, 11 Sep 2020 16:53:09 -0400 Received: from mail-io1-f71.google.com ([209.85.166.71]:40963 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725811AbgIKUxG (ORCPT ); Fri, 11 Sep 2020 16:53:06 -0400 Received: by mail-io1-f71.google.com with SMTP id j4so7684225iob.8 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=UpcHehlqr4DpPEr+qRTNV1NUBJRADIcH756Ld6lKJkrPgPIVH28Qkvl1tzFzqt4K89 539fHfdvTDMl4UocBwNFhbpmawzXybA7P9gNM6+wlwJ9OV5asTQRo4VX0h6FckevucEH WVI9+eYHeTsoruubzHs5DoULpvGOCrlDFVWJus80nsEAe/kjyPxC9/d13EGyov1UkRaA Z9RA3OjuAC2wI/sKolsAGVjk5sEx2BXrbz/iGe49f7nk5kjEWZYolYHV9xfRZHi1QI+c o0vVlXZUKjgeFS1ruP4t20qeOvGX+w5xuidngi6dEnTBOYwgoHz1bpSAygBlUvZiEdUZ kUzg== X-Gm-Message-State: AOAM533R7KvorV4xEMRSoI7Qqp0ubpNpVPwNQivHyDtjVgKf4lc7qetv PE14MOpQy6BZ1bld1S7A9rcck0e6D7/JTkN/pab/Rq9atDuN 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-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@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.