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=-4.1 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 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 8836EC433E0 for ; Tue, 21 Jul 2020 10:21:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 698EE20792 for ; Tue, 21 Jul 2020 10:21:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=cloudflare.com header.i=@cloudflare.com header.b="uCFqHNtN" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729259AbgGUKVh (ORCPT ); Tue, 21 Jul 2020 06:21:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44058 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727942AbgGUKVg (ORCPT ); Tue, 21 Jul 2020 06:21:36 -0400 Received: from mail-wr1-x444.google.com (mail-wr1-x444.google.com [IPv6:2a00:1450:4864:20::444]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4A4D2C0619D8 for ; Tue, 21 Jul 2020 03:21:36 -0700 (PDT) Received: by mail-wr1-x444.google.com with SMTP id z2so20689239wrp.2 for ; Tue, 21 Jul 2020 03:21:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cloudflare.com; s=google; h=references:user-agent:from:to:cc:subject:in-reply-to:date :message-id:mime-version; bh=oJ7MRpiw+iTSL8WvnHtt7TFDU0lu71kFFSR8GrqMDDg=; b=uCFqHNtN85MUxvO4A1kcjM1McIXmvOrnRTH/YFkEekQmOIvOED9d/sDWx8UjlybZqY pb/srWm2LbgoRNYwHyejMYgPgt+2Z8DT3az9Z5JdgnKkGpXkOJzSc6m9ZwG57vsosfW5 PN/+I1JVtbFm2kPXlj/tNpQw5epLiOLrMBV4c= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:references:user-agent:from:to:cc:subject :in-reply-to:date:message-id:mime-version; bh=oJ7MRpiw+iTSL8WvnHtt7TFDU0lu71kFFSR8GrqMDDg=; b=bGLRLD8w/0qqOGl/JA+mXFGjGsZ5nsD5aDPXsLUD9s01C89cOVWukYuy99bL1R3r/z e7hrT5bmwYpHwEO2P9Sl+APcJCpkGKYQMID6rZZfk0htxLhdPR/akoKufmoU5n3JDCbu By1tU+knmKSE7+G2o/q1UtFzZ3+qqTUPVy1ivW8Bb0R0a0JIyp4SEsHdUJnKo7H3QtZY SPvfmpvnJxQJW8iZzHsVf9i9SEZa8nKKUcFSiEFktxcViTW2Nl44vzizqy0byDm6gpLQ TyMAAKM4qBAK1bB3lrKLQjgJsvqliBW5EvVs2N/L9vXIiWCLTIIiBlFD64WoHCrP4lMH c79g== X-Gm-Message-State: AOAM531a25admZJGriYyT+HUKF57dEWIQCdvJVBaxcNQvmuYvpPiRYss tws1/RH5kQMQxSdrnlzEvndIpQ== X-Google-Smtp-Source: ABdhPJw3FKL17gc4iiyZ5KSdU0Ut/TTW6seduJPa0Kl86zVqYX2pOvCQpeORoz9Q5TU2gwEu1T1BWw== X-Received: by 2002:adf:e6c1:: with SMTP id y1mr27943211wrm.116.1595326894988; Tue, 21 Jul 2020 03:21:34 -0700 (PDT) Received: from cloudflare.com ([2a02:a310:c262:aa00:b35e:8938:2c2a:ba8b]) by smtp.gmail.com with ESMTPSA id w14sm36317465wrt.55.2020.07.21.03.21.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 21 Jul 2020 03:21:34 -0700 (PDT) References: <874kq2y2cy.fsf@cloudflare.com> User-agent: mu4e 1.1.0; emacs 26.3 From: Jakub Sitnicki To: David Ahern Cc: Lorenzo Bianconi , netdev@vger.kernel.org, bpf@vger.kernel.org, davem@davemloft.net, ast@kernel.org, brouer@redhat.com, daniel@iogearbox.net, lorenzo.bianconi@redhat.com, kuba@kernel.org Subject: Re: [PATCH bpf-next] bpf: cpumap: fix possible rcpu kthread hung In-reply-to: Date: Tue, 21 Jul 2020 12:21:33 +0200 Message-ID: <871rl5xj6a.fsf@cloudflare.com> MIME-Version: 1.0 Content-Type: text/plain Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org On Mon, Jul 20, 2020 at 05:45 PM CEST, David Ahern wrote: > On 7/20/20 3:14 AM, Jakub Sitnicki wrote: >> I realize it's a code move, but fd == 0 is a valid descriptor number. > > this follows the decision made for devmap entries in that fd == 0 is NOT > a valid program fd. Surprising. Thanks for clarifying.