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=-2.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 CFEDFC433F5 for ; Wed, 8 Sep 2021 01:02:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A769561139 for ; Wed, 8 Sep 2021 01:02:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245379AbhIHBDS (ORCPT ); Tue, 7 Sep 2021 21:03:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46644 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239456AbhIHBDS (ORCPT ); Tue, 7 Sep 2021 21:03:18 -0400 Received: from mail-pf1-x42a.google.com (mail-pf1-x42a.google.com [IPv6:2607:f8b0:4864:20::42a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5268FC061575; Tue, 7 Sep 2021 18:02:11 -0700 (PDT) Received: by mail-pf1-x42a.google.com with SMTP id x19so595211pfu.4; Tue, 07 Sep 2021 18:02:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=pDeJ+ImvfyUW8iRlMB1BgxblOKPWqeMm95cLvzOnvLQ=; b=X/n2fvENXtyKuD++HXWb8VUFHFoAs5QEokF3VnxEYtdady9Xp6TQ8TKvDSPtyKP4pX nShX4IDjohovCGYJgJXX4G111NAtZePcHicljk6XZJ3Gw1ZAxEwopM3xuh09aj11yXUr eYeCWZuAGleDVa0JADpvKKpmQcTFX8+WiAG9Tr0uTgrsCVi5b6Wtr0mlbHXHZvc72vja j7tPwe9VguwDbIubzSy1e02RX8KgRXduUom1blOeufFgkrAfSf4ob3Wu4ag1y65HxFMd Kgpw4foJoFWsNVQrXCX84R8nCuR/zdcru5mhdL6oM/r90QnPFVTqU7P/zpcxidlraCQ2 36aw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=pDeJ+ImvfyUW8iRlMB1BgxblOKPWqeMm95cLvzOnvLQ=; b=E5vykfKL4eoU3Sh94gF2U7WwDNSqVAwGzuno87oIJy5r0SmmmDUAUt7FOt/+2XkHyp QpU5xTrUqvmhGDuASRkLQOrKyV77ksG/PFjRBkwu37rudhWem9BOtq77N4+iue0WfmlL OUxelY+plWBkDFYNSeZqhECbHGexTY2TD7tXR0qyAbjHsKHqwHwkT4XM0zzE08qcIWlW dYHPrakPR6uY6h/IK2iZlVMpr6tNZ+X9U2zmUxsdg4lLop48CyRLixKtd/+GXvWRmgkB 16xAE6NNuAHi9gLKQ/evKcO/EQ6wieKonFnbxLeHMRe9GG0nfJEshPgFzoKMViznIoy9 dp8Q== X-Gm-Message-State: AOAM530+CdI2hr9OI7F4bAHQSEdJ0zVXYLc2c89fTaHIuWnuI0f97qG+ 8hpLsHTVUOP4LXqrR0sPbIO6POfNFAEr9PxIF/lzwxVDGZY3 X-Google-Smtp-Source: ABdhPJwmw06Fb9TYgniH+bteM3MybbaR402maa6CcEWxUJBRAciFkOoef/R9o/rKKbY4Vhe2xe3bKf4wSPtLMj/vYX8= X-Received: by 2002:a62:920b:0:b0:3ec:7912:82be with SMTP id o11-20020a62920b000000b003ec791282bemr1146623pfd.34.1631062930707; Tue, 07 Sep 2021 18:02:10 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Hao Sun Date: Wed, 8 Sep 2021 09:01:59 +0800 Message-ID: Subject: Re: INFO: task hung in io_uring_cancel_generic To: Pavel Begunkov Cc: Jens Axboe , io-uring@vger.kernel.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org Pavel Begunkov =E4=BA=8E2021=E5=B9=B49=E6=9C=888= =E6=97=A5=E5=91=A8=E4=B8=89 =E4=B8=8A=E5=8D=885:31=E5=86=99=E9=81=93=EF=BC= =9A > > On 9/7/21 8:30 PM, Jens Axboe wrote: > > On 9/7/21 5:50 AM, Hao Sun wrote: > >> Hello, > >> > >> When using Healer to fuzz the latest Linux kernel, the following crash > >> was triggered. > >> > >> HEAD commit: 7d2a07b76933 Linux 5.14 > >> git tree: upstream > >> console output: > >> https://drive.google.com/file/d/1c8uRooM0TwJiTIwEviOCB4RC-hhOgGHR/view= ?usp=3Dsharing > >> kernel config: https://drive.google.com/file/d/1XD9WYDViQLSXN7RGwH8AGG= DvP9JvOghx/view?usp=3Dsharing > >> Similar report: > >> https://groups.google.com/u/1/g/syzkaller-bugs/c/FvdcTiJIGtY/m/PcXkoen= UAAAJ > >> > >> Sorry, I don't have a reproducer for this crash, hope the symbolized > >> report can help. > >> If you fix this issue, please add the following tag to the commit: > >> Reported-by: Hao Sun > > > > Would be great with a reproducer for this one, though... > > And syzbot usually sends an execution log with all syz programs > it run, which may be helpful. Any chance you have anything similar > left? > Yes, found it[1]. Here is an execution history with latest 1024 executed progs before crash saved. Hope it can help. I'll also follow this crash closely, see if Healer can find a reproducer and send it to you once it found. [1] https://drive.google.com/file/d/14k8qOFeyKPD4HsqOpIjud3b9jsxFSo-u/view?= usp=3Dsharing > -- > Pavel Begunkov