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[2620:137:e000::1:20]) by mx.google.com with ESMTP id di13-20020a170906730d00b0072f0b024d39si5676693ejc.740.2022.07.23.21.04.02; Sat, 23 Jul 2022 21:04:35 -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 S229494AbiGXEBR (ORCPT + 99 others); Sun, 24 Jul 2022 00:01:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42656 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229445AbiGXEBP (ORCPT ); Sun, 24 Jul 2022 00:01:15 -0400 Received: from mail-io1-f72.google.com (mail-io1-f72.google.com [209.85.166.72]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EF54DCE22 for ; Sat, 23 Jul 2022 21:01:13 -0700 (PDT) Received: by mail-io1-f72.google.com with SMTP id a26-20020a6b661a000000b0067be5b57f45so3195822ioc.16 for ; Sat, 23 Jul 2022 21:01:13 -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=uiSef85sbzNzSxFDZMDAnpVD09PJlwSE8afzRsP7STM=; b=6CVQTbuAR3x2qNNQ3bR9agbPEXsfPr7wFJaB2GGHDQFYmlXUL3bJPNybCfMddCdYmB pg+dphqc84xK2ICUbxI3h4RWdAGYwaeW04VqQE+hGXB7gPk3i4yWKpOoe0vsoSDplgaD wsf7aWDQM2CB02kGXtesPwcwKkKRXsqZT+3dPJdsxCY6jFLwkqJf+GOT/o343z5ee6Ng 89Zjo/jc7S4DjJzTQnqDUEvrtylLQ1/qUwaWJG5tWlD+ZD9iEq8Ckj6PYohzRcoMzhmx GZwqjTkCvuGb9gAf2LCcSIWc7dCbNjw2hrY838f0qKpPzbbLyQkbslqUmbRBnThFITNQ k2bQ== X-Gm-Message-State: AJIora8KDMRmTbnsnKcw+2IoXJyyfydeqF1CsIe2MizDvrUr9baPxclA QOTtz+METnu2A+UMoWgcM3RTytIETd016tgaABmxbpRc0x9r MIME-Version: 1.0 X-Received: by 2002:a05:6638:d92:b0:341:4d9a:7d52 with SMTP id l18-20020a0566380d9200b003414d9a7d52mr2871505jaj.28.1658635273297; Sat, 23 Jul 2022 21:01:13 -0700 (PDT) Date: Sat, 23 Jul 2022 21:01:13 -0700 In-Reply-To: <1822e4b6e21.562f3a5d626157.1197655428248513205@siddh.me> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000046e89e05e4851ee1@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: fa4c07d9 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=17f5cf52080000 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.