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=-2.7 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,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 6ACB3C433FE for ; Thu, 10 Dec 2020 19:00:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1090E23440 for ; Thu, 10 Dec 2020 19:00:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404147AbgLJS7p (ORCPT ); Thu, 10 Dec 2020 13:59:45 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46260 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2393298AbgLJS6v (ORCPT ); Thu, 10 Dec 2020 13:58:51 -0500 Received: from mail-vs1-xe29.google.com (mail-vs1-xe29.google.com [IPv6:2607:f8b0:4864:20::e29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 414EDC0613CF; Thu, 10 Dec 2020 10:58:11 -0800 (PST) Received: by mail-vs1-xe29.google.com with SMTP id z16so3433351vsp.5; Thu, 10 Dec 2020 10:58:11 -0800 (PST) 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=vVsf3l9Q/619RhJuwHHIDbvbBlqa351J5BuLCbbBows=; b=UWmRpJB2WzP666xt7GNev1C208gdqFpOeVwKeLf4MY4P7U2U0jMWCogpUvU1ATgbOh Y+dmGewRCmPrcP4lne+u0e11Z0laig1fl8oCg4O8+FjuEC33lD8SDIhiKwTUyLUtEg3G zsCU0890ObXkxTJPqxpS60/HrWa9rsXR5lDQwrzAsInXc3TapDWNEnv/eTWcot8s3C23 vUOWv2p2jCP3S3UqHBK47KvOASjtpu5inNKu+2lHDQo9l0Hca2nBc6qn7wuKYZPkI+6O 0z7cy2WDsfjzQM24EJFcvjJFqIjD5Yc5Ri73KX/Rd84B3sDom3Lo31StED1whm/b83tj /rBw== 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=vVsf3l9Q/619RhJuwHHIDbvbBlqa351J5BuLCbbBows=; b=BpVy9fedYwBgu2z9c8SeksqbcC5uvOj8mWe8zzXSsMLfNPFrTk6TGNrBw5ivcG9BFg ewSNl4rptXNnbzQViUxLZetAriENvG/STnsXihDvRF+Cb3zAS4zwKIxJibi5ySZErNUi ykxPeJhm6+KayrBOrUfoz7vUyaNtOcfo9Mpos0a3FvMe50JJ8BStVeupMniEf7+4640r CCYb98mT+m4eIlSSVqnEb/I/wdCvurGf+pKCRCmm/fLvNburstjfi1SKNqJjj7HkaGxu zP4jUIAUyGxdrAWkyicLO90cRP9k3FutfCFOlWh9vlgo2CDjPa74RUuO9PHeDLHsYsWl k5Mg== X-Gm-Message-State: AOAM532zEzVTZKAkRq+yX14vQ9hLsmppLgoZSOKN3yAi6a86Dj1ji73e T5KuAjmocYVWUg5zY7D1MrYt1f2Mqd8MSt1w/OU= X-Google-Smtp-Source: ABdhPJwD5AykQ9B1DeA6aNbrWbZQ+VykZW6wtYNLzMipzJoYIJ8rENCRy5uJEPyWPvrcaaBeV97IiMjh8Pr+WVVTDXo= X-Received: by 2002:a67:f519:: with SMTP id u25mr10712808vsn.39.1607626689452; Thu, 10 Dec 2020 10:58:09 -0800 (PST) MIME-Version: 1.0 References: <4eb99a1da6342999c4dca355533a0847d0e942a5.camel@intel.com> <20201209091315.2c55e1c6@kicinski-fedora-pc1c0hjn.DHCP.thefacebook.com> In-Reply-To: From: Emmanuel Grumbach Date: Thu, 10 Dec 2020 20:57:58 +0200 Message-ID: Subject: Re: [BUG] iwlwifi: card unusable after firmware crash To: Rui Salvaterra Cc: Jakub Kicinski , "Coelho, Luciano" , "Goodstein, Mordechay" , "Berg, Johannes" , "linux-wireless@vger.kernel.org" , "linux-kernel@vger.kernel.org" Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, > Hi, again, > > I haven't tested any patch or bisected, but I have another data point. > I built and tested Linux 5.8.18, with the same firmware, and it is > working correctly. I reduced the test case to just rfkilling the > connection, which showed the register dump immediately (before that I > was using the airplane toggle on the keyboard, which isn't working > correctly, it disables and immediately reenables the radio, for some > unfathomable reason). > So, now I'm inclined to believe this is some sort of race condition > between rfkill and pending transactions. Which also means it's not a regression. You can add a dump_stack() in the function that dumps the registers to get a clue.