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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0CE77C4332F for ; Wed, 28 Dec 2022 18:42:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232287AbiL1Smj (ORCPT ); Wed, 28 Dec 2022 13:42:39 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34436 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229964AbiL1Smi (ORCPT ); Wed, 28 Dec 2022 13:42:38 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4DB121277B; Wed, 28 Dec 2022 10:42:37 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id D576E615B5; Wed, 28 Dec 2022 18:42:36 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 072CAC433EF; Wed, 28 Dec 2022 18:42:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1672252956; bh=TKiX1PVB5u9G4qARr/t9Qb4uVt5o5+ndHDIWsWb5Vy0=; h=Date:From:To:Cc:Subject:In-Reply-To:From; b=jqnP+LETaHGdxc9M0X1qj8ONaWeWiejJVMeYeJa0xZkM6np/LOBNDh0OpbhkKfcGv NXCTymA/F7e4zENICfBw5+F02x/UznOdgUfshXVnmHk7mzOcaFLRfNPg+kYzIo93Av ga0t7MyKCvuxnV62ZaAUmYU8MG9LE3k4/mxPU17XiTmFadLHdRai+MXmeM3DweqMrL BTokrSUVE9u9WfOLmPb+szym/0wbpdYx9FwfEDQmioIN9z46ft8Vr5gV1StUa0B4B1 0mxTJVQqvOtQ5/cVvJHUEybXeg1wdFQjgFBakwW99ghQkzCF9CZ5GxNP8R2kTzuz0f xLcPBecnlyfRw== Date: Wed, 28 Dec 2022 12:42:34 -0600 From: Bjorn Helgaas To: Zeno Davatz Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [Bug 216859] New: PCI bridge to bus boot hang at enumeration Message-ID: <20221228184234.GA530399@bhelgaas> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On Wed, Dec 28, 2022 at 06:42:38PM +0100, Zeno Davatz wrote: > Dear Bjorn > > On Wed, Dec 28, 2022 at 1:02 PM Bjorn Helgaas wrote: > > > > [+cc linux-pci, linux-kernel] > > > > On Wed, Dec 28, 2022 at 08:37:52AM +0000, bugzilla-daemon@kernel.org wrote: > > > https://bugzilla.kernel.org/show_bug.cgi?id=216859 > > > > > Summary: PCI bridge to bus boot hang at enumeration > > > Kernel Version: 6.1-rc1 > > > ... > > > > > With Kernel 6.1-rc1 the enumeration process stopped working for me, > > > see attachments. > > > > > > The enumeration works fine with Kernel 6.0 and below. > > > > > > Same problem still exists with v6.1. and v6.2.-rc1 > > > > Thank you very much for your report, Zeno! > > > > v6.0 works, v6.1-rc1 fails. Would you mind booting v6.1-rc1 with the > > "ignore_loglevel initcall_debug" kernel parameters and taking a photo > > when it hangs? > > I will try this after Januar 7th 2023. Sounds good, thanks! > > How did you conclude that the hang is related to a PCI bridge? I see > > recent PCI messages in the photo, but it looks like the last message > > is from NFS, so I'm wondering if I'm missing some context. The v6.0 > > dmesg shows several other ntfs, fuse, JFS, etc messages before more > > PCI-related things. Anyway, the "initcall_debug" might help us narrow > > it down a bit. > > I did not really conclude that. I just saw "PCI" as one of the last > messages being outputted before the boot process stopped. OK. We'll figure it out! Bjorn