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[2620:137:e000::1:20]) by mx.google.com with ESMTP id hd6-20020a170907968600b00711d9021212si9751823ejc.566.2022.07.23.06.45.26; Sat, 23 Jul 2022 06:45:52 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 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 S234216AbiGWNmO (ORCPT + 99 others); Sat, 23 Jul 2022 09:42:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56770 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229469AbiGWNmM (ORCPT ); Sat, 23 Jul 2022 09:42:12 -0400 Received: from mail-il1-f199.google.com (mail-il1-f199.google.com [209.85.166.199]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D5ABD65D9 for ; Sat, 23 Jul 2022 06:42:09 -0700 (PDT) Received: by mail-il1-f199.google.com with SMTP id i9-20020a056e021b0900b002dd12dfd5b6so4378186ilv.16 for ; Sat, 23 Jul 2022 06:42:09 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=f7HYHx9fnFqWx0fVQu8neY0gvnObCgN2cJwzVmyarl4=; b=hY7cjkUAvSypfs7GMs9dCePgN6kY70ZTE4nCFLqv6jv3T7WGmLtPjiL3aMwAPHa1Pm nz8YvE1eDU1yYkAO3OHGG/EY+nV/7b9K82vyPeCERzM5XNm2iKjJ7hKxJg5xLm2QEmJN ITx8ELSPZ6A+4k+13gahrLUzwSZyrw1e3NruBSf81Zl8MXJRPSF3N0I88lqoSyu2XCRj VRIblM99jE0R/DMfmzYgXDllY/A1U176dhZhC3eMDMOAaz9LvnO2GNDs6ZHeuWKlzaVT scuF4ihePnk+FeJ7gV8uhhaL3kGfFYo4xSFdhZdxQXQH8mk1Fl+mfSXDcG6ktf3aUw6+ Seow== X-Gm-Message-State: AJIora9tAhd1fZjKaOwQy9c84VasXi1coVGBG8dD9K6PUqFf8EZ7CfKZ JcI2U66BSA2eUQ8SYn4p5oPWNs5pHwybUn4cLlftWQnlE7U1 MIME-Version: 1.0 X-Received: by 2002:a05:6638:15ca:b0:33f:594a:52ba with SMTP id i10-20020a05663815ca00b0033f594a52bamr1764126jat.217.1658583728995; Sat, 23 Jul 2022 06:42:08 -0700 (PDT) Date: Sat, 23 Jul 2022 06:42:08 -0700 In-Reply-To: <1822b3971d7.6eb03239234291.5206322384521184060@siddh.me> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000ff41ec05e4791d37@google.com> Subject: Re: [syzbot] KASAN: use-after-free Read in post_one_notification From: syzbot To: christophe.jaillet@wanadoo.fr, code@siddh.me, dhowells@redhat.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=-1.6 required=5.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2, SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net 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+c70d87ac1d001f29a058@syzkaller.appspotmail.com Tested on: commit: 778e6ace kernel/watch_queue: Make pipe NULL while clea.. git tree: https://github.com/siddhpant/linux.git post_one_notification console output: https://syzkaller.appspot.com/x/log.txt?x=13049d52080000 kernel config: https://syzkaller.appspot.com/x/.config?x=95c061eee05f8e15 dashboard link: https://syzkaller.appspot.com/bug?extid=c70d87ac1d001f29a058 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Note: no patches were applied. Note: testing is done by a robot and is best-effort only.