From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=213.97.179.56 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793386147; b=ajzm7Z15qcYIJV3Y1aUb7z04DACBTcaBcehxDN3coAEObrh1L0j/d86nnbT5Ul9cdO3O 1JlBJVdz2DiGHSbgpVNslsEuYbBHiRZ0E4RrAMO0z3jCX4OU9xqgMaXLpAV4CV8neKyra BGgEo7DhSZcYYQA06/PkKX/7VBGoA3HOUqGWGOe0ejhMuEaMQlyrOmGkj8GA8klLL9qj9 +HygqPuirY7iF0kHfdNk6v47t+BhDTaBx/p81UnLVvJ6RYyLde9PJcoKDqbtDcYVQIGXQ pZqU4++XUxjwZ+q2bwBIt07MNf2Ysyl+lJiHivpWIGDKhMrTOT/TLbrVfQ9vqvYG1Kg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793386147; h=DMARC-Filter:DKIM-Signature:Received:Message-ID:Date:MIME-Version: User-Agent:Subject:To:Cc:References:Content-Language:From:In-Reply-To: Content-Type:Content-Transfer-Encoding; bh=jaAwLDiZi+eXYpWA8yr8jKN0Kz4vKoh1/crnmVZA9I0=; b=V2D4PWyMb1cCG6Sp/RUzB4n2UoI/oJFOYb3SF1rwpME7sKN6g41EZ2UFsGkNoJZlu9bo 9K0z/Po2ltWkQmMkL8E0Ohl6aWvFLitKoOT9PZMDa06yLZt13yqrRbzw5biwX6BdcFp8R x9q/XOjpWAevbG+0nFRp4AffGqVxrnLfStR5K6E36f/GKVphc8/JFTgnVkBxBIQ1Mb0d/ mqEp6+yrrjdS3eNfGPntFeRXrRQLPORpem14i+euOeX+QVNGRBWm6PbC63F7dQYT9c0mJ 2GhZ/bV+P7MNnsnGLuWoAtYaS5SX33mSKZzrHFwNvZK6CWlyFEZFpCcwdt3uswFY+SA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=igalia.com; spf=pass smtp.mailfrom=igalia.com; dkim=pass header.d=igalia.com header.i=@igalia.com header.a=rsa-sha256 header.s=20170329 header.b=JomhdLvU; arc=none smtp.remote-ip=213.97.179.56 Received: from fanzine2.igalia.com (fanzine2.igalia.com [213.97.179.56]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (prime256v1) server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5B782606A31D; Fri, 30 Oct 2026 18:49:05 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 5B782606A31D Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=igalia.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=igalia.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=igalia.com header.i=@igalia.com header.a=rsa-sha256 header.s=20170329 header.b=JomhdLvU DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=igalia.com; s=20170329; h=Content-Transfer-Encoding:Content-Type:From:Cc:To:Subject: MIME-Version:Date:Message-ID:From:Reply-To; bh=jaAwLDiZi+eXYpWA8yr8jKN0Kz4vKoh1/crnmVZA9I0=; b=JomhdLvUYFTv8zx2svwbqEhnYO 9Au6yJyTKPEAnB3+aiHS/XLk12Ly6XaBpLAbel9gyk+vkbrf2ogcqMK7WFzho/7jZtxiLPXumzfBt DeFL1GSX8/xPRV7wLm/MsA6yAEwBqExgCnUAOHP0EilsVxGKVTnZnvWCQfrUvMq+BwVqm0jh5Jm4I bbtLyMX3d1yg4qJGcDqASlEbMBGwyGOXkolMgZkp5DhSUX/efk2DzBEMv9hYInYPcpyseLPIGvns4 yom2h57OP/TbtfDhNDasJP4WpZ/jYW1ASA5xBZjy5IOJ1nIWuNNH5jb0DB3YVucgosylx2XPsStrw ryU/tn/A==; Received: from [177.172.124.63] (helo=[192.168.15.100]) by fanzine2.igalia.com with esmtpsa (Cipher TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_128_GCM:128) (Exim) id 1xMrew-00FGSZ-V6; Fri, 30 Oct 2026 19:49:03 +0100 Message-ID: <590a361e-d54c-45ca-a65d-6ecac8bc9669@igalia.com> Date: Fri, 30 Oct 2026 15:49:09 -0300 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] ovl: restrict casefold consistency checks to directories To: Hungyu Lin , amir73il@gmail.com Cc: linux-unionfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, miklos@szeredi.hu References: <20261028154008.67451-1-dennylin0707@gmail.com> Content-Language: en-US From: =?UTF-8?Q?Andr=C3=A9_Almeida?= In-Reply-To: <20261028154008.67451-1-dennylin0707@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Em 28/10/2026 12:40, Hungyu Lin escreveu: > ovl_lookup_single() compares every positive child's casefold flag with > that of the overlay. On casefolded ext4, regular files do not inherit > the casefold flag from their parent directory. Looking up an existing > regular file on a casefolded overlay therefore fails with EREMOTE. > Symlinks, FIFOs and whiteouts are rejected by the same check. > > Restrict the child consistency check to directories, along with the > corresponding assertion in ovl_get_inode(). This allows nondirectory > objects to be looked up without rejecting them or warning about their > flags, while directories with inconsistent casefold settings are still > rejected. > > Fixes: 16754d61dc69 ("ovl: Support mounting case-insensitive enabled layers") > Cc: stable@vger.kernel.org > Signed-off-by: Hungyu Lin Reviewed-by: André Almeida