From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 312103D385 for ; Tue, 13 Jun 2023 21:41:52 +0000 (UTC) Received: from mail-oa1-x2c.google.com (mail-oa1-x2c.google.com [IPv6:2001:4860:4864:20::2c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B0A2911B for ; Tue, 13 Jun 2023 14:41:51 -0700 (PDT) Received: by mail-oa1-x2c.google.com with SMTP id 586e51a60fabf-1a693718ffbso2376534fac.0 for ; Tue, 13 Jun 2023 14:41:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1686692511; x=1689284511; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:subject:cc:to:from:date:from:to:cc:subject:date :message-id:reply-to; bh=LlKEMybERhd9wYHREEdkadIOD8IIANcJ3v2Hrx+wix4=; b=FoTwUkXSLWYHGUL9iue8lYi9jm/BWQlr7GtedKL4IQZeonJiROaV9E4wSjimkjQQ23 uWDWPUX7FCi3z+v1EeASf0FIzGwWfNLZ4wS/DmaVXaCRtzLNOPP1H15QlMWFpzVLj9iP /Ir7qLHnb4YiMrWdiGR1XC5b7AtxztOJutgprTnIp25gkGCINjVvlimBfaiPBUMxqlmb pdASuh3tn2WuyqzkqGvewhrlP8JrCOa9ejUXizoFknhkoa7s41/er7D20DcznF1H9URo FhWUALuXlGkNDungI0kzmEQeHwU9cWP7JYxnQXJAJKyjl+pbpPGak3RKv6sr/fyf4buY jiPQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686692511; x=1689284511; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:subject:cc:to:from:date:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=LlKEMybERhd9wYHREEdkadIOD8IIANcJ3v2Hrx+wix4=; b=B4khut0Orqh8bjSf0ZubAcN4/Xb9SAaCi6DaVa38/SoIT6Ca9vyQY/oi+vBzNwwNda lSOrzfhnnlbcMl2C8MwHT2TuHm07VMUmDPlg38ux7numbty9I11UUAiCiNfdjdtXEig8 q3ab+ChodLAwX0yI+suzyBNSE3FQZTyqixiKwF5hsnmJgZBXTrFx+kuh+W7tSWiQjZpx 864qtEplc5uGQoG8KuaWAo4NJfyUee5Kd1uXbOL8hHfIw8MHXtMw6vpbxTdqXo0D5feI j6OmODVxGKnKV9pxQgHrodzS6HV5U41Lulz6d23ZIeWksmm55WZ9hfGZQMtuTeSLEQe3 w+hw== X-Gm-Message-State: AC+VfDxVAeSygLHwPzm14VWkmb96A9ewvR+2LzAML7iKgI/wgEX7ey/J FnJy3hJnC9bnZqVz27KljGhfUhLwLIU= X-Google-Smtp-Source: ACHHUZ4deFyN37keqSzh5i5RBrzomH3idI7MtUYBB8En+kn4U07gZmhU1AuNgLETbx+WhANoQJIo1w== X-Received: by 2002:a05:6870:341:b0:1a3:1962:9123 with SMTP id n1-20020a056870034100b001a319629123mr10244130oaf.31.1686692510945; Tue, 13 Jun 2023 14:41:50 -0700 (PDT) Received: from espresso.lan.box ([179.219.237.97]) by smtp.gmail.com with ESMTPSA id s13-20020a056870610d00b001a2f7ca6183sm7879742oae.38.2023.06.13.14.41.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 13 Jun 2023 14:41:49 -0700 (PDT) Date: Tue, 13 Jun 2023 18:41:46 -0300 From: Ricardo Nabinger Sanchez To: Eric Dumazet Cc: "David S. Miller" , Willem de Bruijn , netdev@vger.kernel.org Subject: Re: panic in udp_init() when using FORCE_NR_CPUS Message-ID: <20230613184146.66d89282@espresso.lan.box> In-Reply-To: References: <20230613165654.3e75eda8@espresso.lan.box> X-Mailer: Claws Mail 3.18.0 (GTK+ 2.24.33; x86_64-slackware-linux-gnu) Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net On Tue, 13 Jun 2023 23:05:34 +0200 Eric Dumazet wrote: > I suspect you run with LOCKDEP enabled (CONFIG_PROVE_LOCKING=3Dy) > and a very big NR_CPUS ? >=20 > LOCKDEP makes spinlock_t 16 times bigger :/ >=20 > If so, please try the following fix. CONFIG_LOCKDEP_SUPPORT=3Dy Now I'm using only 12 CPUs, per my other message where I disabled MAXSMP and really set NR_CPUS, resulting in a successful boot. It may be true that earlier it was architectures's max (8192). Maybe that was the real issue, then? Best regards, --=20 Ricardo Nabinger Sanchez Dedique-se a melhorar seus esfor=E7os. Todas as suas conquistas evolutivas n=E3o foram resultado dos deuses, das outras consci=EAncias, ou do acaso, mas unicamente da sua transpira=E7=E3o. ---Waldo Vieira, L=E9xico de Ortopensatas