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 52B981C2324; Thu, 6 Jun 2024 14:20:47 +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=1717683647; cv=none; b=iL8adOPzUVTFFLnWk1MCnWfdReq+iTcK6tgdmUtVYs+t89JP0TIoJpbDvdiO6rHahgM4eS6fp8VGHn6iIWAWgzFUSN0fiiC4VQ6f7mXazoBTUW4Vva56bMpI2+wdRRgjE7MXZRrwjTVns7uFGIaZJHZXq7nuFmEOmgayI1UXjyI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717683647; c=relaxed/simple; bh=3SymHkJBg4LjPDXY2J0RVqoYJBM/xw5iPS4ddcS4QQQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=f0tn0T2joSMco0bO38ACYT44CToxdhwwuqFnS+H5IsIxfCw/9zCsaeIGSvEE0JKQ+AtFaJDuaPrdxzry0RcLtRnWhIZt5Dn536Xeu5M8Q5sd6Z6vuXVusdGa9xldDDlETjh/IxafpW4bq94FWYua2jnU57tAF1LmTuQSWedXnYQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=muaM2AOD; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="muaM2AOD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2EE01C32781; Thu, 6 Jun 2024 14:20:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1717683647; bh=3SymHkJBg4LjPDXY2J0RVqoYJBM/xw5iPS4ddcS4QQQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=muaM2AODm8JrFz9ok5wszH0i2+g7XUpV7UkZofqsNZ9nmGUHfQIBVl5EX1FpS4xt2 8Byt7hCj3tVHyR58W44Qn7JJkQbzeA6qPTBj+sZRBMsb5p/7slWhYUaP13KlPy+8Nb QNAsNghBngbPiOMi9GliRZE8M0c1rm+R/7QlrsN4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Chao Yu , Jaegeuk Kim , Sasha Levin Subject: [PATCH 6.6 518/744] f2fs: compress: dont allow unaligned truncation on released compress inode Date: Thu, 6 Jun 2024 16:03:10 +0200 Message-ID: <20240606131749.056135759@linuxfoundation.org> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240606131732.440653204@linuxfoundation.org> References: <20240606131732.440653204@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Chao Yu [ Upstream commit 29ed2b5dd521ce7c5d8466cd70bf0cc9d07afeee ] f2fs image may be corrupted after below testcase: - mkfs.f2fs -O extra_attr,compression -f /dev/vdb - mount /dev/vdb /mnt/f2fs - touch /mnt/f2fs/file - f2fs_io setflags compression /mnt/f2fs/file - dd if=/dev/zero of=/mnt/f2fs/file bs=4k count=4 - f2fs_io release_cblocks /mnt/f2fs/file - truncate -s 8192 /mnt/f2fs/file - umount /mnt/f2fs - fsck.f2fs /dev/vdb [ASSERT] (fsck_chk_inode_blk:1256) --> ino: 0x5 has i_blocks: 0x00000002, but has 0x3 blocks [FSCK] valid_block_count matching with CP [Fail] [0x4, 0x5] [FSCK] other corrupted bugs [Fail] The reason is: partial truncation assume compressed inode has reserved blocks, after partial truncation, valid block count may change w/o .i_blocks and .total_valid_block_count update, result in corruption. This patch only allow cluster size aligned truncation on released compress inode for fixing. Fixes: c61404153eb6 ("f2fs: introduce FI_COMPRESS_RELEASED instead of using IMMUTABLE bit") Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim Signed-off-by: Sasha Levin --- fs/f2fs/file.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index ac592059c68be..154c55c1a0f47 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -929,9 +929,14 @@ int f2fs_setattr(struct mnt_idmap *idmap, struct dentry *dentry, ATTR_GID | ATTR_TIMES_SET)))) return -EPERM; - if ((attr->ia_valid & ATTR_SIZE) && - !f2fs_is_compress_backend_ready(inode)) - return -EOPNOTSUPP; + if ((attr->ia_valid & ATTR_SIZE)) { + if (!f2fs_is_compress_backend_ready(inode)) + return -EOPNOTSUPP; + if (is_inode_flag_set(inode, FI_COMPRESS_RELEASED) && + !IS_ALIGNED(attr->ia_size, + F2FS_BLK_TO_BYTES(F2FS_I(inode)->i_cluster_size))) + return -EINVAL; + } err = setattr_prepare(idmap, dentry, attr); if (err) -- 2.43.0