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 8610BC433EF for ; Tue, 31 May 2022 00:17:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241238AbiEaARI (ORCPT ); Mon, 30 May 2022 20:17:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52740 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231827AbiEaARI (ORCPT ); Mon, 30 May 2022 20:17:08 -0400 Received: from outgoing.mit.edu (outgoing-auth-1.mit.edu [18.9.28.11]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7245050078 for ; Mon, 30 May 2022 17:17:05 -0700 (PDT) Received: from cwcc.thunk.org (pool-108-7-220-252.bstnma.fios.verizon.net [108.7.220.252]) (authenticated bits=0) (User authenticated as tytso@ATHENA.MIT.EDU) by outgoing.mit.edu (8.14.7/8.12.4) with ESMTP id 24V0GuMm001047 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 30 May 2022 20:16:57 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mit.edu; s=outgoing; t=1653956218; bh=P3mVIzOKUqwVADQU0cXbrviXhIQxBCuaPdBX62zOmx4=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=DBsH3vWN2sQKc/uOHskuE3blE7/mOg5IrnB53MVTLOUzyQIfpYYWjCk34yygaGdHl yFMXhjEKufueBYlp//joimHo0NJf7+/zScXx+dhCY//hxxuyRt2jrQee/kLnK/B/ok Z8YSGG87T4hLlUng5JCWpLm99Wdpi76xMf+TDcNKUBTiWihnkRkgkjjr+YB6nvVUNI x3UYzPyImlTpM4mu/X46LjItr8GQiueu53LMn9cNc970uH3b0JPx1H1/LtOo63hiOi h4AtY36CmhqKlvon23o8z32nFyUG+JdYSbhD8UepjEVD11Im6AmIc8YZHwMYYSr1Kg Ku+24ZiNGgA9g== Received: by cwcc.thunk.org (Postfix, from userid 15806) id 77A0B15C3A95; Mon, 30 May 2022 20:16:56 -0400 (EDT) Date: Mon, 30 May 2022 20:16:56 -0400 From: "Theodore Ts'o" To: "Stephen E. Baker" Cc: adilger.kernel@dilger.ca, hch@lst.de, linux-ext4@vger.kernel.org Subject: Re: simplify ext4_sb_read_encoding regression Message-ID: References: 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-ext4@vger.kernel.org On Mon, May 30, 2022 at 06:20:46PM -0400, Stephen E. Baker wrote: > The other thought I had was - this device has a strict size limit on kernels, > which is why I had to start building my own in the first place. Nothing over > 32MB can boot. However I verified my kernel was smaller than that. I > minimized my config even further and my Image is now 20MB uncompressed > which is smaller than it was before, so that's not it either. > > Here is my full config: I don't know what to tell you. I took your config, stripped out all of the modules, and enabled CONFIG_HYPERVISOR_GUEST, CONFIG_VIRTIO_MENU, and CONFIG_VIRTIO_BLK, and build a 5.16 kernel. This worked just fine using kvm-xfstests booting into a root file system that had case folding enabled. (See my previous e-mail for a description for how to test things.) So I can't replicate your problem. Without the boot logs, I'm not sure what else we can do here. Maybe you can figure out a way to replicate the problem using kvm-xfstests? We really need a solid reproducer on a system where we can debug things and see the kernel logs. - Ted