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 8C61BC4167B for ; Fri, 30 Dec 2022 18:50:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235316AbiL3SuT (ORCPT ); Fri, 30 Dec 2022 13:50:19 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60902 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235450AbiL3SuK (ORCPT ); Fri, 30 Dec 2022 13:50:10 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 38B261AD82; Fri, 30 Dec 2022 10:50:09 -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 C80DD61B76; Fri, 30 Dec 2022 18:50:08 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 02AC7C433EF; Fri, 30 Dec 2022 18:50:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1672426208; bh=6U1QtAg/fnbIKQ7BjeKrptun4t3AzEhRj/fvZlEBeLI=; h=Date:From:To:Cc:Subject:In-Reply-To:From; b=ruzzPgB/hftcNihTSwd6QXLW3eZ4j2qvaXJ6TT/58/btkPBGLMAf4RvsKNAPkUydQ 1ux+MCf0l1qJOduK5fib2ajmotTx0dgj+YWoYVJW/ZAsvFwAM37geSwptqdKP6Q0Cj GJuIgP1LnWCPusb80b85g6dlxneTqy8oeSaLyUiXEV18YKv+G5bAt+IdEzkadxoBhp 5T/xTM/UJVLd2GrEsuAAlcKbqgSiSGfO1/wyMegRrbuJHLV87l2nNtAPf/bn0tyARj 9sNNb+2VrX6WcATjN9rbQGkLmB3XfWImPVTm1smlRm6baHT5kZNF0A2DT22wFITeJ/ eC5aEI0x7XJgg== Date: Fri, 30 Dec 2022 12:50:06 -0600 From: Bjorn Helgaas To: Zeno Davatz Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Bruno Moreira-Guedes Subject: Re: [Bug 216859] New: PCI bridge to bus boot hang at enumeration Message-ID: <20221230185006.GA695815@bhelgaas> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20221228184234.GA530399@bhelgaas> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org [+cc Bruno, to include you here as well as the bugzilla] On Wed, Dec 28, 2022 at 12:42:34PM -0600, Bjorn Helgaas wrote: > On Wed, Dec 28, 2022 at 06:42:38PM +0100, Zeno Davatz wrote: > > On Wed, Dec 28, 2022 at 1:02 PM Bjorn Helgaas wrote: > > > 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