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=-0.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 51291C5DF60 for ; Thu, 7 Nov 2019 13:44:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 27E372077C for ; Thu, 7 Nov 2019 13:44:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389677AbfKGNoK (ORCPT ); Thu, 7 Nov 2019 08:44:10 -0500 Received: from mail-il1-f197.google.com ([209.85.166.197]:50168 "EHLO mail-il1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388454AbfKGNmG (ORCPT ); Thu, 7 Nov 2019 08:42:06 -0500 Received: by mail-il1-f197.google.com with SMTP id c2so2631435ilj.16 for ; Thu, 07 Nov 2019 05:42:05 -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=JSje/AH07oDcPbgdMNB1SmnapsrACftv+UWeFURGS+o=; b=PerDedrC227dCDYkW64IB6wDpF/QgG8CRFna7sZ/HnfIfvv7c7i+aKoAw1pSdhPMtG pkszI4JMMkwO3Ze8chOhX4sJVoW41E6tNao6E384HkFrgRk+roXy2U2ZwvUKdB1Sbn0y 3YgvS4HS5j6N0C7kQAEEmbb/9uBfnobxZ+Jy7RkKIRpt83Kx7p5w/Xh/OieoxZJ1KK69 UBs7S3z1loCPDVvJ+sB1GyPi2valzlnBzrNymJLtm+DN6yHLSKnmXtEzwdqP6mT1Wwb8 GLCJNyZ0KxlfsjRb49cjBPXqohZsmvV1iPuITsr1h5FrAlSO8SbnTDyvzAAaJBNtAmLV K6Lg== X-Gm-Message-State: APjAAAVDUCb4wwf7YE9PAZEZ2w+yHOZcmdseyZi0ujyu+v1HqdVASXtB 4RiuIfFcSdj/geWMblUuepkdKFFKQQdb77DUBhvLEt/KWORB X-Google-Smtp-Source: APXvYqxG4legBrqYPkWuqZIqpTsAoWCTwM+LFBpOJApTr736BPZhw6No/JLjYsmAogQRUvC2OoKv/gRcI5B3aQxGny7hDWkav0p7 MIME-Version: 1.0 X-Received: by 2002:a6b:6f09:: with SMTP id k9mr3513083ioc.91.1573134125408; Thu, 07 Nov 2019 05:42:05 -0800 (PST) Date: Thu, 07 Nov 2019 05:42:05 -0800 In-Reply-To: <000000000000afbebb0570be9bf3@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000baac070596c1d4ae@google.com> Subject: Re: KASAN: use-after-free Read in p9_fd_poll From: syzbot To: asmadeus@codewreck.org, davem@davemloft.net, dominique.martinet@cea.fr, ericvh@gmail.com, jiangyiwen@huwei.com, linux-kernel@vger.kernel.org, lucho@ionkov.net, netdev@vger.kernel.org, rminnich@sandia.gov, syzkaller-bugs@googlegroups.com, tomasbortoli@gmail.com, v9fs-developer@lists.sourceforge.net Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot suspects this bug was fixed by commit: commit 430ac66eb4c5b5c4eb846b78ebf65747510b30f1 Author: Tomas Bortoli Date: Fri Jul 20 09:27:30 2018 +0000 net/9p/trans_fd.c: fix race-condition by flushing workqueue before the kfree() bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1646690c600000 start commit: d72e90f3 Linux 4.18-rc6 git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=68af3495408deac5 dashboard link: https://syzkaller.appspot.com/bug?extid=0442e6e2f7e1e33b1037 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1569b51c400000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16e7a978400000 If the result looks correct, please mark the bug fixed by replying with: #syz fix: net/9p/trans_fd.c: fix race-condition by flushing workqueue before the kfree() For information about bisection process see: https://goo.gl/tpsmEJ#bisection