Received: by 2002:a05:6a10:8c0a:0:0:0:0 with SMTP id go10csp1913355pxb; Mon, 22 Feb 2021 14:34:16 -0800 (PST) X-Google-Smtp-Source: ABdhPJzOp78rBINrtK0QJMDLBAoMnLDFjAfBIxJqeEn6K+ksU4FKcd52nj2TfB3XDbMErPwepmKx X-Received: by 2002:a05:6402:33a:: with SMTP id q26mr20524890edw.150.1614033255995; Mon, 22 Feb 2021 14:34:15 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1614033255; cv=none; d=google.com; s=arc-20160816; b=vbkYJ7Xnhp3XUZ9/VEIAahwfBtEuIrJRqJlHq5y0Qdf8+L8wo0E3IUziXpIGIAzEeC XUK5t9WKm3p/J/J7VxuyIDSOAkr1qLxtwkK8jxzhzkPgp55hNA8YtWu2hXHFbM7ty2mL M2we+/OpUdV8KYG2UEfl+kMyVX5Gk65flCess3rrKEOAieOUnA6EWssfE+enGUzDWjtq YIjoaYlYtLoQsjVro7ig1Qrrpr7vHEuwYvf0v7bu6/1F5Mxp5Z+PSpX+cJ5DOUpStCpu NLxgzkaJx+IKUP95bBL8FCvymfRFGxIeih73Ahd9ICtfVlteHaiydDCtCiKZ6JTRacKL 9YbQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:to:from:subject:message-id:in-reply-to:date :mime-version; bh=pLRhfTwy0FUDr6U+czrEs8kT0CiU0z5KeTk0hw3Qk44=; b=ACPjCuixMkZSHsydy1BjfxW1RwIhG0KwDIjdmCW9BUEUKr6jkZP2fkAj5XSSKYurQ7 q5OPDf8ZDfEmroos3PSIvNvrJWZpGfBfkHrSTT7s8+LhnMM9iSWl+7SFnXL60vHfX1ng X+7S4LsuYB31GKufEvnn6SznzCKqTVAM3MwaIMgDT95g90IdxrxtQ5IFL4zr5XfKxJeJ UusHAuU5kys45K2tPW0NX93/3XjX4biTVT84XC5BqsKEBy+w3hMzEwG57/7A7V586W7X YJrSRWLceYJkvJGxiUBCKN9nKaxIJ+FbGoUxcU/B6S9lNioBA3yKs3y09Fm3WazAllOr QTew== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id c11si4526106edy.0.2021.02.22.14.33.53; Mon, 22 Feb 2021 14:34:15 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230153AbhBVUFy (ORCPT + 99 others); Mon, 22 Feb 2021 15:05:54 -0500 Received: from mail-io1-f69.google.com ([209.85.166.69]:44542 "EHLO mail-io1-f69.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230099AbhBVUFt (ORCPT ); Mon, 22 Feb 2021 15:05:49 -0500 Received: by mail-io1-f69.google.com with SMTP id v20so3343848iob.11 for ; Mon, 22 Feb 2021 12:05:34 -0800 (PST) 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=pLRhfTwy0FUDr6U+czrEs8kT0CiU0z5KeTk0hw3Qk44=; b=I9bSOHIfBLJwDSsGUHBvXqIW4F9RmiLS18SDHmgXrzIkXsk4NGmbN4KXEvCQMvNlbr KDznspDXPLS/1BTN/wRdgpH/TjCuIdd6cIvrAu5hfw8lz8iIuGshFG0a5+0IGXBq9hM+ vka/dXoFmcS7FcHNaL1o6+TW4ZPE5i3axEZQjazQZiubii7w4Ehgys2j0mHxWdV4BZHA HyhVm4Cl4NeGSnmb2EInRYiXwKtnKI9qv51EfMuUg5SclonSIYt6TgiQ11VUfLWRSfD9 n2kLLDQen+QCCM7yxvuU5du0SWedcE/oYbdHA+WgOdhCIHSjX4DSJg/Fw4H9la/cwrmF kKeg== X-Gm-Message-State: AOAM533wnPkLpeJhVAjedwiJIKW2+pllGJ4IqxJWLyCH6HCYzz19/Zj8 oE6Quhqt4ZWfry+POKolGUtvFP7dkmCav58PtHD55bd8Q2sN MIME-Version: 1.0 X-Received: by 2002:a5e:8615:: with SMTP id z21mr9597031ioj.132.1614024309299; Mon, 22 Feb 2021 12:05:09 -0800 (PST) Date: Mon, 22 Feb 2021 12:05:09 -0800 In-Reply-To: <49ac93fc-57b0-1f94-c43e-f9ab9a3913af@toxicpanda.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000009d5c1205bbf251b9@google.com> Subject: Re: KASAN: use-after-free Read in nbd_genl_connect From: syzbot To: axboe@kernel.dk, josef@toxicpanda.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, nbd@other.debian.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" 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+429d3f82d757c211bff3@syzkaller.appspotmail.com Tested on: commit: 2b31ee47 nbd: handle device refs for DESTROY_ON_DISCONNECT.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/josef/btrfs-next.git nbd-kasan-fix kernel config: https://syzkaller.appspot.com/x/.config?x=8ff2a923e3615ffe dashboard link: https://syzkaller.appspot.com/bug?extid=429d3f82d757c211bff3 compiler: Note: testing is done by a robot and is best-effort only.