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=-7.7 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,MENTIONS_GIT_HOSTING, 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 A3158C433B4 for ; Fri, 30 Apr 2021 15:02:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 74DA76142A for ; Fri, 30 Apr 2021 15:02:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230092AbhD3PDZ (ORCPT ); Fri, 30 Apr 2021 11:03:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54726 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229750AbhD3PDX (ORCPT ); Fri, 30 Apr 2021 11:03:23 -0400 Received: from mail-lj1-x22d.google.com (mail-lj1-x22d.google.com [IPv6:2a00:1450:4864:20::22d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5FFE2C06174A; Fri, 30 Apr 2021 08:02:35 -0700 (PDT) Received: by mail-lj1-x22d.google.com with SMTP id u20so81173981lja.13; Fri, 30 Apr 2021 08:02:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=G0037Jf1ObgVnWJX3giHmaVlY4h3vdc7P44Jc0d03qY=; b=l+7pA/sTRV5Tya+cXRjZYJbBVBrn7NPzPJZRWLrdPSjuak9PKrv3GGp7pBkcyBU+0H NncCDbb13A3P1IpPztCi29rWDOtqDSVSGRJUi3gZZVBxSmRwlBjPrkivz/GvxOolZfm2 uvcBV7ekYUqgKnriu1IWenBux+nbLZa8yqN+dF3hm79o8cWFrVbnXAvKrkGTC6GEDawH 9+ZkS/EJreYgbXYu9E6GdHAyvdkm2M0zPH/CTSxGMdlT+ThMWNdU1gbOf31V3YRZmq16 QWRY5QOhq44IG7eUh+SDVrMbfch7eNuOTdQJvihSWaYeyQ8STzGRSKnyzyzrXvcYSCTR GuOA== 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; bh=G0037Jf1ObgVnWJX3giHmaVlY4h3vdc7P44Jc0d03qY=; b=VS6tgXT4uLg6C7t7jnCN68VyFYrC0enD262M2hCgn+pmAzHDGdxoQSXbFFbTTJtn7l 9y9+zT6n5LJ70DBENlaNVZDjz0g6DstaBI7oZmGCi9hjPsaWAfGqQNHx0o0hRdy5AyyH 75hLlv3Wpu2y/T4bbH6+29LhxDLs6RzhDZ89cRaxPwYScIt6m54InlPmw1Fk4ukOfmDo mgrxd0+Skhos/PrQ381uiKvmbZ0TwPgTw1uDXLAvc35o8Clte3OyE8uHEdnWFeip92YF 10unTrxM4t9K6ykYeZFoOQGGg9QcledzvIumPt9OI4JHx8FZQAE31KWF00DaOD0yJ2Gq 8eYw== X-Gm-Message-State: AOAM532XT0IW2u1OJzcEYYMbmnALxo7XI1aeJ6j4AzpJL4rOI4/phIqw oBvHOn6cSyuQXutHsVknYwrPMoct61lujRLmTXA= X-Google-Smtp-Source: ABdhPJzzRoiphDcV4Xb+RnsfSFP2UaDKR4I7TM3sTpQ4SJXRK/Adr0+lnKDKVxJhT/yhizd9ezEVGZgTS4wboajtAfE= X-Received: by 2002:a2e:a7cc:: with SMTP id x12mr4098497ljp.473.1619794953707; Fri, 30 Apr 2021 08:02:33 -0700 (PDT) MIME-Version: 1.0 References: <0000000000000c97e505bdd1d60e@google.com> <53a22ab4-7a2d-4ebd-802d-9d1b4ce4e087n@googlegroups.com> In-Reply-To: From: Palash Oswal Date: Fri, 30 Apr 2021 20:32:22 +0530 Message-ID: Subject: Re: INFO: task hung in io_uring_cancel_sqpoll To: Pavel Begunkov Cc: Jens Axboe , io-uring@vger.kernel.org, LKML , syzbot+11bf59db879676f59e52@syzkaller.appspotmail.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Apr 30, 2021 at 8:03 PM Pavel Begunkov wrote: > > On 4/30/21 3:21 PM, Palash Oswal wrote: > > On Thursday, March 18, 2021 at 9:40:21 PM UTC+5:30 syzbot wrote: > >> > >> Hello, > >> > >> syzbot found the following issue on: > >> > >> HEAD commit: 0d7588ab riscv: process: Fix no prototype for arch_dup_tas.. > >> git tree: git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes > >> console output: https://syzkaller.appspot.com/x/log.txt?x=12dde5aed00000 > >> kernel config: https://syzkaller.appspot.com/x/.config?x=81c0b708b31626cc > >> dashboard link: https://syzkaller.appspot.com/bug?extid=11bf59db879676f59e52 > >> userspace arch: riscv64 > >> CC: [asml.s...@gmail.com ax...@kernel.dk io-u...@vger.kernel.org linux-...@vger.kernel.org] > >> > >> Unfortunately, I don't have any reproducer for this issue yet. > > There was so many fixes in 5.12 after this revision, including sqpoll > cancellation related... Can you try something more up-to-date? Like > released 5.12 or for-next > The reproducer works for 5.12. I tested against the HEAD b1ef997bec4d5cf251bfb5e47f7b04afa49bcdfe commit on for-next tree https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/?h=for-next and the reproducer fails. Palash