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[2620:137:e000::1:20]) by mx.google.com with ESMTP id w11-20020a1709060a0b00b0072b872932d6si921788ejf.567.2022.07.28.08.57.56; Thu, 28 Jul 2022 08:58:21 -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 S229768AbiG1PuT (ORCPT + 99 others); Thu, 28 Jul 2022 11:50:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60198 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229613AbiG1PuK (ORCPT ); Thu, 28 Jul 2022 11:50:10 -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 D95A92642 for ; Thu, 28 Jul 2022 08:50:09 -0700 (PDT) Received: by mail-il1-f199.google.com with SMTP id k11-20020a92c24b000000b002dd46b47e01so1397037ilo.14 for ; Thu, 28 Jul 2022 08:50:09 -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=h9dKTPCnNry06qps4eymbd89NnvSJWefjx7WIqIa/x4=; b=PJW/bxUDy1a/6KIvj3dBM6UQ5m1UUz1Dp2q4Bab2aBJe+UhfGk+YhbgzOGd5j+S5OX K21qlIm0Iu2IMnwOdfR8lmvukmICOB/DfbbzOu5HmPI4Rs0NMKvvtyfrK9GSE/NrUi1g 6qy4BxKx6xXXFOZZP+iXxx+o5v9g6KgPxh/xFLt4phjaW8koS7rjluDZUoY9JBT5cL2g 8uGz+qnmhDBIVE2D+Opf1sCZ5BaXMn3/GxFsQ9OdgX6lXT6Fe7oAFuk45o7r7khFdRrq PhAmsJox3erFhmYF3cjs7QTwgwvdVAtEIyVZXODTCuKsHvnsTEEgybj7Az+3GZsRanEq ri0Q== X-Gm-Message-State: AJIora9l+quwDuWxTwxy6WIz608/MqNRcCRY5ANc91CRO8wmOAvWddZ6 GW+LJt5Zl7IE/dlqZBovl4CaCmy8AXgRFDBwxxC0WqU2Ofng MIME-Version: 1.0 X-Received: by 2002:a02:c9c4:0:b0:33f:4f44:11bd with SMTP id c4-20020a02c9c4000000b0033f4f4411bdmr10905577jap.240.1659023409218; Thu, 28 Jul 2022 08:50:09 -0700 (PDT) Date: Thu, 28 Jul 2022 08:50:09 -0700 In-Reply-To: <182456e25c7.cd7fb4c79569.3198675383666226894@siddh.me> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000fb0ea205e4df7c67@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: 16007670 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=11a6eade080000 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.