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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E41D3C4332F for ; Fri, 23 Dec 2022 13:44:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236158AbiLWNo3 (ORCPT ); Fri, 23 Dec 2022 08:44:29 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47456 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230157AbiLWNoZ (ORCPT ); Fri, 23 Dec 2022 08:44:25 -0500 Received: from mail-io1-f70.google.com (mail-io1-f70.google.com [209.85.166.70]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CCDCB379FF for ; Fri, 23 Dec 2022 05:44:24 -0800 (PST) Received: by mail-io1-f70.google.com with SMTP id j5-20020a5d9d05000000b006e2f0c28177so1898526ioj.17 for ; Fri, 23 Dec 2022 05:44:24 -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=/+brZE1BuxQx4JJ7arfpIPSEPG2D5qK+YSbmXqrC2Fw=; b=to4U/uGMFMtv9dmuEbLz/7AEjWI3WYN6YOb+ZDmc35LHDBefqhbGLX2K8r2nZP5HCM 4xCw2lvN4YYwdyEC49zccPtTf4KqmpWZhAqUszpRCfo9Lu/r592MWLx9stu2Brp42Abz 6Tml1eVANxnjd55Tq9xY6Auke819IhNEJSuWwQdYcw/4t0jCxANJcyBofX10wgsO05P7 G7pInskQAwN9stxKD93oRJ6i162LhQlBV34xHzh8z11E9U4LdridBtwkOEr9lOlTFea0 X4290i23bXwfPovpnM145bZPAnr9tgwDfQFY/MraenVNnldUaq2n+ZqnbKW7mRwtmZ5U t/kg== X-Gm-Message-State: AFqh2krm5LlA/b/hou00e6rv1zk7kPg6W61+5iZJ6SmO5V0t52shvES/ pxtvm9lkGCcrT6lnQBgSx6s+PY61TyhKbvs3FTyeLD5jYHTJ X-Google-Smtp-Source: AMrXdXsbjmejxcAu5y04i/9VO2XqcPgHRXri3ilUuNNAnRUPtRp3qE+GkuTf2WssNCexpgOFvScBGJ/OthNs97njrrhPElJIcyzz MIME-Version: 1.0 X-Received: by 2002:a92:4a11:0:b0:304:c58f:2149 with SMTP id m17-20020a924a11000000b00304c58f2149mr769399ilf.154.1671803064236; Fri, 23 Dec 2022 05:44:24 -0800 (PST) Date: Fri, 23 Dec 2022 05:44:24 -0800 In-Reply-To: <20221223114849.2150-1-hdanton@sina.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000c7413e05f07efb02@google.com> Subject: Re: [syzbot] WARNING: refcount bug in gadgetfs_kill_sb From: syzbot To: hdanton@sina.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" 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: { P4880 } 2641 jiffies s: 2057 root: 0x0/T rcu: blocking rcu_node structures (internal RCU debug): Tested on: commit: 8395ae05 Merge tag 'scsi-misc' of git://git.kernel.org.. git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master console output: https://syzkaller.appspot.com/x/log.txt?x=15632254480000 kernel config: https://syzkaller.appspot.com/x/.config?x=17aadd57f57472c2 dashboard link: https://syzkaller.appspot.com/bug?extid=ac031e7435393ad05df6 compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: arm64 patch: https://syzkaller.appspot.com/x/patch.diff?x=172f58ff880000