From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5D2E53716D; Wed, 3 Apr 2024 04:22:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712118154; cv=none; b=U2IRQhsBqP1jcJq43mGACCujqDdYAxIGOw1Mb2OuLzHZjWkdfhuZD4AnwDa1PvIoK4e+FeR5zQDgy9IDg7sBhf8rixfJDesluHGuGE0JTiE1a7Fj2/530hW5zdcIvk/PcPKfRHoVgQtGNMmasR7C/pf6gFMv0zSjXnC1fe0P4vY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712118154; c=relaxed/simple; bh=RziLX4KmfrHv88fw3gSwzASvgPajd59CTngrkRmOSnA=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=oEbW3kCeI4uPwCaWEUsL/zK3oviYQJJL9mA+EA9yB30ndNH5fPOdzc/mxxzhO+Q//RICu/wTPiW16p90HTPXEWW1NoxTtwgPulk965CfP1bS4Idjx8lPuYs/mw4TkHA1Hqlu/a2GABIhpkDdiHvvn/7yL4O339nlQpg/6bn0tYI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=YhVw4H90; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="YhVw4H90" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 79F81C433F1; Wed, 3 Apr 2024 04:22:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1712118154; bh=RziLX4KmfrHv88fw3gSwzASvgPajd59CTngrkRmOSnA=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=YhVw4H90SPZTOe+o9L+rwRKHwnOQVJGOPnyIJJpX/jDX8aq8Uboa1HJcC9afYaeEB VvjUDFMW5C3llc/cxvg8AWKe37x/2sDj4tc8YFTpUv0QiuWXwD98OGdj+19O3fVp14 ZTL0OtusBj/ekHgjv3xDsMGaKjjK+vvbR4DXTB/Es5eyoIy3mKFDNiHQjtAjwrGHJM T/5oOF+Ve5RB7l9hR43HckD9ZBIFTYK5t/lbk1BKeItYqBWeGIlcXluTSQmVsOtfaA D3jaYXxBcuhm19Qnd7zaMliUfcNoGKGLV76OnKXHkqOPeK5sFH5434b2yM1CHBD46Q KosV6AKUOqE8A== Date: Tue, 2 Apr 2024 21:22:31 -0700 From: Eric Biggers To: Eugen Hristev Cc: tytso@mit.edu, adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, jaegeuk@kernel.org, chao@kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-fsdevel@vger.kernel.org, krisman@suse.de, brauner@kernel.org, jack@suse.cz, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk, kernel@collabora.com, Gabriel Krisman Bertazi Subject: Re: [f2fs-dev] [PATCH v15 6/9] ext4: Log error when lookup of encoded dentry fails Message-ID: <20240403042231.GH2576@sol.localdomain> References: <20240402154842.508032-1-eugen.hristev@collabora.com> <20240402154842.508032-7-eugen.hristev@collabora.com> Precedence: bulk X-Mailing-List: linux-ext4@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240402154842.508032-7-eugen.hristev@collabora.com> On Tue, Apr 02, 2024 at 06:48:39PM +0300, Eugen Hristev via Linux-f2fs-devel wrote: > From: Gabriel Krisman Bertazi > > If the volume is in strict mode, ext4_ci_compare can report a broken > encoding name. This will not trigger on a bad lookup, which is caught > earlier, only if the actual disk name is bad. > > Signed-off-by: Gabriel Krisman Bertazi > Signed-off-by: Eugen Hristev > --- > fs/ext4/namei.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c > index 2d0ee232fbe7..3268cf45d9db 100644 > --- a/fs/ext4/namei.c > +++ b/fs/ext4/namei.c > @@ -1477,6 +1477,9 @@ static bool ext4_match(struct inode *parent, > * only case where it happens is on a disk > * corruption or ENOMEM. > */ > + if (ret == -EINVAL) > + EXT4_ERROR_INODE(parent, > + "Directory contains filename that is invalid UTF-8"); > return false; I'm seeing this error when the volume is *not* in strict mode and a file has a name that is not valid UTF-8. That doesn't seem to be working as intended. mkfs.ext4 -F -O casefold /dev/vdb mount /dev/vdb /mnt mkdir /mnt/dir chattr +F /mnt/dir touch /mnt/dir/$'\xff' [ 1528.691319] EXT4-fs (vdb): Using encoding defined by superblock: utf8-12.1.0 with flags 0x0 [ 1528.707793] EXT4-fs (vdb): mounted filesystem 0be607cc-0dae-4e7f-a40f-4fe8075e8e50 r/w with ordered data mode. Quota mode: none. [ 1528.728583] EXT4-fs error (device vdb): ext4_match:1481: inode #13: comm touch: Directory contains filename that is invalid UTF-8 [ 1528.730700] EXT4-fs error (device vdb): ext4_match:1481: inode #13: comm touch: Directory contains filename that is invalid UTF-8 [ 1528.732976] EXT4-fs error (device vdb): ext4_match:1481: inode #13: comm touch: Directory contains filename that is invalid UTF-8 [ 1528.735536] EXT4-fs error (device vdb): ext4_match:1481: inode #13: comm touch: Directory contains filename that is invalid UTF-8