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 8DC25C433EF for ; Mon, 13 Sep 2021 03:22:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6D45C60E94 for ; Mon, 13 Sep 2021 03:22:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238437AbhIMDXY (ORCPT ); Sun, 12 Sep 2021 23:23:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34770 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238439AbhIMDXX (ORCPT ); Sun, 12 Sep 2021 23:23:23 -0400 Received: from mail-pj1-x102f.google.com (mail-pj1-x102f.google.com [IPv6:2607:f8b0:4864:20::102f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B2D38C061760; Sun, 12 Sep 2021 20:22:08 -0700 (PDT) Received: by mail-pj1-x102f.google.com with SMTP id gp20-20020a17090adf1400b00196b761920aso5452146pjb.3; Sun, 12 Sep 2021 20:22:08 -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=9Tt81VnxLpAm/FYmLBBYEcWxdp6PQAJapzbAtKFP83Q=; b=U2cM+uBnIL+ZzCX0wv8EJOuEtF4RGrmnmZHdALaw4MAD7eS5RBc5STm6peLFa6kFGn 82PICzQ4unfMz06LklP/3xP3ZdCJybvcXXnKld3Q7avVdru/vtLyN3j/hRQmBWuw+2b8 Yo31s6Wws8kZ+tyYYkZMveyGQpqUqcGidRHJs36L2YCnjQuDzwdbc0MkBftXK0YneeQa l3Z2XOTd2SKdjwZOkt6lkqstPTGtM0MEPLCisn0+/5tLCinx5L1aRaMjM0pHR47rMaHu +RT+DhvIjuWkJni17Nynz+lqr1GOFyWVtjnFasap6flvVof+gAq3G+/LqWUjLw+ERz/a L8Og== 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:content-transfer-encoding; bh=9Tt81VnxLpAm/FYmLBBYEcWxdp6PQAJapzbAtKFP83Q=; b=CNVJgC9vZkx8irtH02Ryp8Idyn+gq32GIEzMPaVuUUjFhUcrCtbErlxqCV3uH2orOa YWsHutPzsZRDyk4th3RaW+/REoXwnQJWS8ZBJeqWiKRDaOBkyrpfw6CI2/Jt7FEt7WAz CIxFRMTDuWrvBvuyzITMH0QrOM/2LI3GKMJuKSQvfN3GvK9BFlXA+j9xfokwMBcw3OwZ ozBbzCWzOIiKB0IBIvOKE/aEBZ+ROag848dYP2h4t/7EkCjFhAOT4qY4LMI+x3pwT0sP /zw8fUwRpjFLBPIgHt+/LOdSigUc7/3ithzTmO9J9WzZyakXaCO1ik8yMdRpN28ksohx dzTA== X-Gm-Message-State: AOAM533yEDdcer3/6CRzZEsPm8Qqe/1Iy3EftynPX+4ThQzvIpQuPxR7 sa8A48dmY3KZamOa8JEq1cFbcaaa5WJ2ce/NQg== X-Google-Smtp-Source: ABdhPJwxSMPVZUnjLNxAIY0G6MWPtgHEnPCLvtssaFuWq7w8AOw3yMlo5pe3E3LGxIXLPewbjrPgbcnPMOcC69hiQT4= X-Received: by 2002:a17:902:7b84:b0:13b:90a7:e270 with SMTP id w4-20020a1709027b8400b0013b90a7e270mr3992866pll.21.1631503328145; Sun, 12 Sep 2021 20:22:08 -0700 (PDT) MIME-Version: 1.0 References: <9b5d8c00-0191-895b-0556-2f8167ab52bd@kernel.dk> In-Reply-To: <9b5d8c00-0191-895b-0556-2f8167ab52bd@kernel.dk> From: Hao Sun Date: Mon, 13 Sep 2021 11:21:57 +0800 Message-ID: Subject: Re: INFO: task hung in io_uring_cancel_generic To: Jens Axboe Cc: Pavel Begunkov , 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 > Jens Axboe =E4=BA=8E2021=E5=B9=B49=E6=9C=8813=E6=97=A5= =E5=91=A8=E4=B8=80 =E4=B8=8A=E5=8D=8810:50=E5=86=99=E9=81=93=EF=BC=9A > > On 9/12/21 8:26 PM, Hao Sun wrote: > > Hi > > > > Healer found a C reproducer for this crash ("INFO: task hung in > > io_ring_exit_work"). > > > > HEAD commit: 4b93c544e90e-thunderbolt: test: split up test cases > > Does this reproduce on 5.15-rc1? We had a few hang cases fixed for io-wq > since that commit 6 days ago. Just tried it. No, it did not crash the kernel on 5.15-rc1. Following log was printed repeatedly: [ 647.478557][ T6807] loop0: p1 p2 < > p3 p4 [ 647.478922][ T6807] loop0: p1 size 11290111 extends beyond EOD, truncate= d [ 647.481111][ T6807] loop0: p3 size 1914664839 extends beyond EOD, trunca= ted [ 647.482512][ T6807] loop0: p4 size 3389030400 extends beyond EOD, trunca= ted It seems that this crash was fixed. Sorry for the dup report. > > -- > Jens Axboe >