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=-7.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 A161CC433DB for ; Thu, 25 Mar 2021 20:33:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 75BAF61A40 for ; Thu, 25 Mar 2021 20:33:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230042AbhCYUc4 (ORCPT ); Thu, 25 Mar 2021 16:32:56 -0400 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:47363 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230290AbhCYUcX (ORCPT ); Thu, 25 Mar 2021 16:32:23 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1616704342; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=GPeAC2SU3JAKEkwGdDypjlr3Iu8SDL5k3qtAn7Yo0i8=; b=Owqc452d+tF6dVwWmC4DKYCYCzbhAFTnKfiHspjHHfrm4UTxvKV2KHcD4MKd748MV+WKta I8qevfj1WSARyZkY+Qlt1K9BTasMVeqlLpUR45B6EyY//xznCm+pdLva5x7PCFZWza7tlM FE+lvRwBqEiF7VGFbdnnvpIbMJ6dl64= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-564--UhNXdL_PEmlrwUDqHWcxw-1; Thu, 25 Mar 2021 16:32:18 -0400 X-MC-Unique: -UhNXdL_PEmlrwUDqHWcxw-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id C56388018A1; Thu, 25 Mar 2021 20:32:17 +0000 (UTC) Received: from dhcp-27-174.brq.redhat.com (unknown [10.40.192.41]) by smtp.corp.redhat.com (Postfix) with SMTP id DF09A1000324; Thu, 25 Mar 2021 20:32:15 +0000 (UTC) Received: by dhcp-27-174.brq.redhat.com (nbSMTP-1.00) for uid 1000 oleg@redhat.com; Thu, 25 Mar 2021 21:32:17 +0100 (CET) Date: Thu, 25 Mar 2021 21:32:14 +0100 From: Oleg Nesterov To: Jens Axboe Cc: "Eric W. Biederman" , io-uring@vger.kernel.org, torvalds@linux-foundation.org, linux-kernel@vger.kernel.org, metze@samba.org Subject: Re: [PATCH 0/2] Don't show PF_IO_WORKER in /proc//task/ Message-ID: <20210325203214.GC28349@redhat.com> References: <20210325164343.807498-1-axboe@kernel.dk> <5ee8ad82-e145-3ed6-1421-eede1ada0d7e@kernel.dk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5ee8ad82-e145-3ed6-1421-eede1ada0d7e@kernel.dk> User-Agent: Mutt/1.5.24 (2015-08-30) X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org I didn't even try to read this series yet, will try tomorrow. But sorry, I can't resist... On 03/25, Jens Axboe wrote: > > On 3/25/21 1:33 PM, Eric W. Biederman wrote: > > Jens Axboe writes: > > > >> Hi, > >> > >> Stefan reports that attaching to a task with io_uring will leave gdb > >> very confused and just repeatedly attempting to attach to the IO threads, > >> even though it receives an -EPERM every time. Heh. As expected :/ > And arguably it _is_ a gdb bug, but... Why do you think so? Oleg.