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 X-Spam-Level: X-Spam-Status: No, score=-23.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE, SPF_PASS,USER_IN_DEF_DKIM_WL autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CC42BC433F5 for ; Mon, 20 Sep 2021 08:15:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ADE1A610A8 for ; Mon, 20 Sep 2021 08:15:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235543AbhITIQ6 (ORCPT ); Mon, 20 Sep 2021 04:16:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50000 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235472AbhITIQu (ORCPT ); Mon, 20 Sep 2021 04:16:50 -0400 Received: from mail-ot1-x331.google.com (mail-ot1-x331.google.com [IPv6:2607:f8b0:4864:20::331]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2AE05C061762 for ; Mon, 20 Sep 2021 01:15:24 -0700 (PDT) Received: by mail-ot1-x331.google.com with SMTP id 5-20020a9d0685000000b0054706d7b8e5so3691684otx.3 for ; Mon, 20 Sep 2021 01:15:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=21r3SlBBRDN7c0GadObCkHwMNcefKesbIlR1sAlPsLQ=; b=SQWorY7ZsfFtuloE/lG1ja9FAvI18dl+3bl39aMZLpZxDz27fU31wFPgbMvWVtOdh/ jH5lPNVNUsKGROWbTpJVqcFsltAcTwYq6aD3Qr+5PAA7SeVT1zKKDMSLqv7v81XUiv42 tLQKsYubNAudAduG3VA2BvmY5PzrTUH32YWZwuT/we2r/LH7pP++EwPC4RvZPzD5CBWU zTEXxcBJcgaf4n199H6aPWL/uU67ZsIRMgZaPcf/PHYjRcVI5MVqZIKnhwPKag68NCqD koCbJjQKlGy7LSty428a/2+jF10JJS8pdJV/zHpNGg+z9pTFoUePAAxc/broobCeL+ga pNPA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=21r3SlBBRDN7c0GadObCkHwMNcefKesbIlR1sAlPsLQ=; b=6Su3zNujLRDCgFvsKMU2P8obB9GNWH4ElOop70fdUOTAuwVPIu6OY2jQEW+Z/aqmap ObowYfA1MfD7C0zfFJsRUc+6TjgznPHtdUeqv/KS5u7KZfzYpoBbonFSHbm4whcFZZsX A0AVSzYSidmyOS8sdK4/JIsI3hNH6XZqWcGMdMn+Tae3GExRct8oeGQFPOUj0MfFlA5/ 4mBQ1SR52p9wZ69kf81020IIlZ3jy/vYPRQE4jIKZGJkXhYFMyA/0p2qNtNJkgbGxEQs GAECLRKJUb3OCiUDcsDipgqPmDmEo+ZBZkK01Mb1Z80PiV+ucFXOAkjwXVeMSIhu2JbP jnBA== X-Gm-Message-State: AOAM532AJjunql5HGpsn5CggvS+JIloVMKYkJFF7S3FtlYMGccPsiH70 k/8CDHfmlJpJ20UlUIfw1sfsIvI0QBihYSAxAr94HA== X-Google-Smtp-Source: ABdhPJzEDVSSzCivHfiy0IzQdQlADqrjIknyU8CHTYUeZMc4g90+xJaP6rpoqArVDCE1Y9MpCoy2Dueb/K4l59izd04= X-Received: by 2002:a9d:2f28:: with SMTP id h37mr10592929otb.196.1632125723220; Mon, 20 Sep 2021 01:15:23 -0700 (PDT) MIME-Version: 1.0 References: <0ddad8d7-03c2-4432-64a4-b717bbc90fb4@gmail.com> <000000000000526fb105cc1d3f5b@google.com> In-Reply-To: <000000000000526fb105cc1d3f5b@google.com> From: Dmitry Vyukov Date: Mon, 20 Sep 2021 10:15:12 +0200 Message-ID: Subject: Re: [syzbot] WARNING in __percpu_ref_exit (2) To: syzbot Cc: asml.silence@gmail.com, axboe@kernel.dk, coreteam@netfilter.org, davem@davemloft.net, dsahern@kernel.org, fw@strlen.de, hdanton@sina.com, io-uring@vger.kernel.org, kadlec@netfilter.org, kuba@kernel.org, linux-kernel@vger.kernel.org, ming.lei@redhat.com, netdev@vger.kernel.org, netfilter-devel@vger.kernel.org, pablo@netfilter.org, syzkaller-bugs@googlegroups.com, yoshfuji@linux-ipv6.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 16 Sept 2021 at 16:01, syzbot wrote: > > Hello, > > syzbot has tested the proposed patch and the reproducer did not trigger any issue: > > Reported-and-tested-by: syzbot+d6218cb2fae0b2411e9d@syzkaller.appspotmail.com > > Tested on: > > commit: 5318e5b9 io_uring: quiesce files reg > git tree: https://github.com/isilence/linux.git syz_test_quiesce_files > kernel config: https://syzkaller.appspot.com/x/.config?x=f7d9f99709463d21 > dashboard link: https://syzkaller.appspot.com/bug?extid=d6218cb2fae0b2411e9d > compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 > > Note: testing is done by a robot and is best-effort only. OK, since it's not failing, I assume we can say: #syz fix: io_uring: fix link timeout refs (and it's better to close it with a wrong fix, then to keep it open forever anyway)