Received: by 2002:a05:6358:d09b:b0:dc:cd0c:909e with SMTP id jc27csp5281992rwb; Sun, 11 Dec 2022 03:27:45 -0800 (PST) X-Google-Smtp-Source: AA0mqf6GFoZIy43arFrgNaohdMneF5CCzVQLJ2nuNW0S2XXfBOljipIwhvkDdVZ/YgSUuVBD8ZMp X-Received: by 2002:a17:906:9b96:b0:7c1:6bd3:d38c with SMTP id dd22-20020a1709069b9600b007c16bd3d38cmr1363308ejc.32.1670758065387; Sun, 11 Dec 2022 03:27:45 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1670758065; cv=none; d=google.com; s=arc-20160816; b=WIu7IvN8Llh7UZ71SeyRVJfwFz9v2yyCIe4eflilK4R6awxDgmsg78zM9mvmUfmaUG PZBwFSqgJops9L30z4oTLjpe4NugNC0Y3tROAmVW1bslwSzy6swNnjvi9G3oiwypmgQV u2Bvm6uogDiJCrcexgY7ZksjpXY7JrPq6pzRfowdkVGMMgmJJvtvCVVJnOu3I8UVOzpn CBQ8AausKnWpFLkTGjX/hO0CymUxsKtDLn09/CzTAqKlE+HoPzcY9o179Gx/Dm0Tf/86 37QJ2Z6vUVih4TKtE3tTZGm8O0SoVJ9pthG536wAApL91p/m5zwWaVDmEwfW+/29+g92 k4QQ== 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=mTLXLz0Yqnnl7blWQ8qwUjLEzmVCWr1GK3r/EpeDXQY=; b=AhLAyxKd+ONpmVtUniJsp1VRvjG4wMmEnupK+rWW76nnJFE7eYDqj9QxI70Gz795Ix 838rE9kwbxed6Fc0jwQnlx5tBfTUgW26eYVXrABXXtTOad/dv1vn3NLoOwY62t9EhDt1 ZUB/7y7aJV1EfIYoyWmIXsevQtPspFHuHWF6SzKXUCKetLRr00FHzafq4hqsIIUcHWBT gFqvikeStLS+YlL0fCVucNEz+cQqwUMf7YOpL8BVym24tkeVFk9YbRIclX2MNC/PQ5BN LeHuOZw6CbqeW8EYwSMzeScDpnNWxSvwhTgcjYuYUmNBxC7mn+2vgSSbUEm0sBVTztVi iwnw== ARC-Authentication-Results: i=1; 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 Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id du13-20020a17090772cd00b007c16344082dsi1834609ejc.799.2022.12.11.03.27.27; Sun, 11 Dec 2022 03:27:45 -0800 (PST) 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 S230098AbiLKKmn (ORCPT + 75 others); Sun, 11 Dec 2022 05:42:43 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47996 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230230AbiLKKmT (ORCPT ); Sun, 11 Dec 2022 05:42:19 -0500 Received: from mail-il1-f198.google.com (mail-il1-f198.google.com [209.85.166.198]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 94602E0E9 for ; Sun, 11 Dec 2022 02:42:17 -0800 (PST) Received: by mail-il1-f198.google.com with SMTP id a11-20020a92c54b000000b003034a80704fso3277812ilj.1 for ; Sun, 11 Dec 2022 02:42:17 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=mTLXLz0Yqnnl7blWQ8qwUjLEzmVCWr1GK3r/EpeDXQY=; b=K90j7RGnThJk10rELrtLgttL9ttddKp0OUR1jsPpTqdA8YbHiRiI89FZ2A2sFY827G pgODkX/qi6iZkuz3pm0apAZB0RZ6z1pEfSq1/s3wGuJIITbXskpuror1166V2T/gO3pC x2VGIrJmyircIW23Pj2x/g+/c3nx8cctPptxEeqEAW1ES1n+NrCAiAmcUeCqR6u2oXIM jTMEBlyyBIuBO2WIRUUQqLdk/rwQZZ70n7vAUc5pqKpyTBxNOGahIW4y/Eds8sm8zQq3 06dTXp9cZLgE+ZefbNQj+qy1W9mLzmz8+o85jLNxQvjxAu3gk2LB4VPiJF0x+CLe2ALm t4cw== X-Gm-Message-State: ANoB5pnjratTBrCQ+GMkWIiYKdPOgDHmCvY3hIefS6xdFu7HDvH6AioI R+EZna/zYkpSqHtM3lGzKce3a37zSJ4ms1Jk3nhY/w6UaA17 MIME-Version: 1.0 X-Received: by 2002:a05:6638:4183:b0:349:fa5a:a80b with SMTP id az3-20020a056638418300b00349fa5aa80bmr38339710jab.23.1670755336919; Sun, 11 Dec 2022 02:42:16 -0800 (PST) Date: Sun, 11 Dec 2022 02:42:16 -0800 In-Reply-To: <20221211014342.2302-1-hdanton@sina.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000005d216f05ef8b0a6e@google.com> Subject: Re: [syzbot] WARNING: refcount bug in nldev_newlink From: syzbot To: hdanton@sina.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 but the reproducer is still triggering an issue: INFO: rcu detected stall in corrupted rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P5545 } 2629 jiffies s: 2809 root: 0x0/T rcu: blocking rcu_node structures (internal RCU debug): Tested on: commit: 591cd615 Add linux-next specific files for 20221207 git tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git console output: https://syzkaller.appspot.com/x/log.txt?x=13b5948f880000 kernel config: https://syzkaller.appspot.com/x/.config?x=8b2d3e63e054c24f dashboard link: https://syzkaller.appspot.com/bug?extid=3fd8326d9a0812d19218 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 patch: https://syzkaller.appspot.com/x/patch.diff?x=1119320b880000