From patchwork Wed May 5 21:04:43 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Boris Burkov X-Patchwork-Id: 12241029 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,LOTS_OF_MONEY,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EE1DAC4360C for ; Wed, 5 May 2021 21:04:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BE873613E3 for ; Wed, 5 May 2021 21:04:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233129AbhEEVFr (ORCPT ); Wed, 5 May 2021 17:05:47 -0400 Received: from out2-smtp.messagingengine.com ([66.111.4.26]:44215 "EHLO out2-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232878AbhEEVFr (ORCPT ); Wed, 5 May 2021 17:05:47 -0400 Received: from compute2.internal (compute2.nyi.internal [10.202.2.42]) by mailout.nyi.internal (Postfix) with ESMTP id 9C0875C0156; Wed, 5 May 2021 17:04:49 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute2.internal (MEProxy); Wed, 05 May 2021 17:04:49 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bur.io; h=from :to:subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; s=fm3; bh=IgAeioOxlTyqRdXUnVATQBL5fk +20RoZlf5xSSHhEfo=; b=MeFh9KxjmNt+azfi9WLMnJ6Y5AM0LZCs8qmYV4sggO EUMN5IIo6zQg2uGWfecTgwPP1NIo8voRAbRu+bzCPQvaeanBcjmtY9rMrnJJ2tlz H/kbgSr8QwIwvP+CTOpsv6U/BEq8Ps28ClUl0rEfHev8lWHPYo4rd/oHDxqzd9kl XmThRULoygZqoeEmRC1zbPqjT5EG9AoKk4u7TXKztI5iD0R1X8tBbPjG4JSFAktM GMtwtBh3GE6zjQDJ/ornnweHSABr5dM1WuZhoa+a1y6Cv4L+rndQMXgPQT508rW/ hDzWf1eaKRUt05zJxJi+KbHj8V4rPHyii0b1BD8t+eNg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=content-transfer-encoding:date:from :in-reply-to:message-id:mime-version:references:subject:to :x-me-proxy:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s= fm2; bh=IgAeioOxlTyqRdXUnVATQBL5fk+20RoZlf5xSSHhEfo=; b=wulrc81S +Z1Zy6zUiFr9HkUAkFd1iHxR5Nrq69jsTPZVEc/ybtOq962rhCqeH134rn0P8nFP zr6QFeqxuWgZ8Nz21kUwoLmyjHp2g0rE1D8XX5BzdQMo5zJnMCjFhuTgHBB1yV1m QDrLhJk/gRC6jzpBsFMKMYVHlF5i9/k2AGJhqf1HYo7Kr7vak1OisgXqcOi75gkd ZxdSDvdkc612DlkNe0XM9Wgaf3hqpkxSvt6/bB6z1c0++419MWCtiec88uCS226s JNd1RfdN6Km3uxHxWFlHKvzz8px6fk08ioqVqZi7wub9bLwRy23ected1KFP5Fdc AP/QbQ3WKBIWqw== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduledrvdefkedgudehvdcutefuodetggdotefrod ftvfcurfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfgh necuuegrihhlohhuthemuceftddtnecunecujfgurhephffvufffkffojghfggfgsedtke ertdertddtnecuhfhrohhmpeeuohhrihhsuceuuhhrkhhovhcuoegsohhrihhssegsuhhr rdhioheqnecuggftrfgrthhtvghrnhepieeuffeuvdeiueejhfehiefgkeevudejjeejff evvdehtddufeeihfekgeeuheelnecukfhppedvtdejrdehfedrvdehfedrjeenucevlhhu shhtvghrufhiiigvpedtnecurfgrrhgrmhepmhgrihhlfhhrohhmpegsohhrihhssegsuh hrrdhioh X-ME-Proxy: Received: from localhost (unknown [207.53.253.7]) by mail.messagingengine.com (Postfix) with ESMTPA; Wed, 5 May 2021 17:04:49 -0400 (EDT) From: Boris Burkov To: fstests@vger.kernel.org, linux-fscrypt@vger.kernel.org, linux-btrfs@vger.kernel.org, kernel-team@fb.com Subject: [PATCH v4 1/4] btrfs: test btrfs specific fsverity corruption Date: Wed, 5 May 2021 14:04:43 -0700 Message-Id: <39a5e3f106db214a2d6416c7fda242c445cc6e53.1620248200.git.boris@bur.io> X-Mailer: git-send-email 2.30.2 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org There are some btrfs specific fsverity scenarios that don't map neatly onto the tests in generic/574 like holes, inline extents, and preallocated extents. Cover those in a btrfs specific test. This test relies on the btrfs implementation of fsverity in the patches titled: btrfs: initial fsverity support btrfs: check verity for reads of inline extents and holes and on btrfs-corrupt-block for corruption in the patches titled: btrfs-progs: corrupt generic item data with btrfs-corrupt-block btrfs-progs: expand corrupt_file_extent in btrfs-corrupt-block Signed-off-by: Boris Burkov --- common/btrfs | 5 ++ common/config | 1 + common/verity | 7 ++ tests/btrfs/290 | 180 ++++++++++++++++++++++++++++++++++++++++++++ tests/btrfs/290.out | 25 ++++++ tests/btrfs/group | 1 + 6 files changed, 219 insertions(+) create mode 100755 tests/btrfs/290 create mode 100644 tests/btrfs/290.out diff --git a/common/btrfs b/common/btrfs index ebe6ce26..bd6e87ce 100644 --- a/common/btrfs +++ b/common/btrfs @@ -419,3 +419,8 @@ _btrfs_rescan_devices() { $BTRFS_UTIL_PROG device scan &> /dev/null } + +_require_btrfs_corrupt_block() +{ + _require_command "$BTRFS_CORRUPT_BLOCK_PROG" btrfs_corrupt_block +} diff --git a/common/config b/common/config index a47e462c..003b2a88 100644 --- a/common/config +++ b/common/config @@ -256,6 +256,7 @@ export BTRFS_UTIL_PROG=$(type -P btrfs) export BTRFS_SHOW_SUPER_PROG=$(type -P btrfs-show-super) export BTRFS_CONVERT_PROG=$(type -P btrfs-convert) export BTRFS_TUNE_PROG=$(type -P btrfstune) +export BTRFS_CORRUPT_BLOCK_PROG=$(type -P btrfs-corrupt-block) export XFS_FSR_PROG=$(type -P xfs_fsr) export MKFS_NFS_PROG="false" export MKFS_CIFS_PROG="false" diff --git a/common/verity b/common/verity index 38eea157..d2c1ea24 100644 --- a/common/verity +++ b/common/verity @@ -8,6 +8,10 @@ _require_scratch_verity() _require_scratch _require_command "$FSVERITY_PROG" fsverity + if [ $FSTYP == "btrfs" ]; then + _require_command "$BTRFS_CORRUPT_BLOCK_PROG" btrfs_corrupt_block + fi + if ! _scratch_mkfs_verity &>>$seqres.full; then # ext4: need e2fsprogs v1.44.5 or later (but actually v1.45.2+ # is needed for some tests to pass, due to an e2fsck bug) @@ -147,6 +151,9 @@ _scratch_mkfs_verity() ext4|f2fs) _scratch_mkfs -O verity ;; + btrfs) + _scratch_mkfs + ;; *) _notrun "No verity support for $FSTYP" ;; diff --git a/tests/btrfs/290 b/tests/btrfs/290 new file mode 100755 index 00000000..26939833 --- /dev/null +++ b/tests/btrfs/290 @@ -0,0 +1,180 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Copyright (C) 2021 Facebook, Inc. All Rights Reserved. +# +# FS QA Test 290 +# +# Test btrfs support for fsverity. +# This test extends the generic fsverity testing by corrupting inline extents, +# preallocated extents, holes, and the Merkle descriptor in a btrfs-aware way. +# +seq=`basename $0` +seqres=$RESULT_DIR/$seq +echo "QA output created by $seq" + +here=`pwd` +tmp=/tmp/$$ +status=1 # failure is the default! +trap "_cleanup; exit \$status" 0 1 2 3 15 + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/verity + +# remove previous $seqres.full before test +rm -f $seqres.full + +_supported_fs btrfs +_require_scratch_verity +_require_scratch_nocheck +_require_odirect +_require_btrfs_corrupt_block + +_cleanup() +{ + cd / + rm -f $tmp.* +} + +get_ino() { + local file=$1 + stat -c "%i" $file +} + +validate() { + local f=$1 + local sz=$(_get_filesize $f) + # buffered io + echo $(basename $f) + $XFS_IO_PROG -rc "pread -q 0 $sz" $f 2>&1 | _filter_scratch + # direct io + $XFS_IO_PROG -rdc "pread -q 0 $sz" $f 2>&1 | _filter_scratch +} + +# corrupt the data portion of an inline extent +corrupt_inline() { + local f=$SCRATCH_MNT/inl + $XFS_IO_PROG -fc "pwrite -q -S 0x58 0 42" $f + local ino=$(get_ino $f) + _fsv_enable $f + _scratch_unmount + # inline data starts at disk_bytenr + # overwrite the first u64 with random bogus junk + $BTRFS_CORRUPT_BLOCK_PROG -i $ino -x 0 -f disk_bytenr $SCRATCH_DEV > /dev/null 2>&1 + _scratch_mount + validate $f +} + +# preallocate a file, then corrupt it by changing it to a regular file +corrupt_prealloc_to_reg() { + local f=$SCRATCH_MNT/prealloc + $XFS_IO_PROG -fc "falloc 0 12k" $f + local ino=$(get_ino $f) + _fsv_enable $f + _scratch_unmount + # set extent type from prealloc (2) to reg (1) + $BTRFS_CORRUPT_BLOCK_PROG -i $ino -x 0 -f type -v 1 $SCRATCH_DEV >/dev/null 2>&1 + _scratch_mount + validate $f +} + +# corrupt a regular file by changing the type to preallocated +corrupt_reg_to_prealloc() { + local f=$SCRATCH_MNT/reg + $XFS_IO_PROG -fc "pwrite -q -S 0x58 0 12288" $f + local ino=$(get_ino $f) + _fsv_enable $f + _scratch_unmount + # set type from reg (1) to prealloc (2) + $BTRFS_CORRUPT_BLOCK_PROG -i $ino -x 0 -f type -v 2 $SCRATCH_DEV >/dev/null 2>&1 + _scratch_mount + validate $f +} + +# corrupt a file by punching a hole +corrupt_punch_hole() { + local f=$SCRATCH_MNT/punch + $XFS_IO_PROG -fc "pwrite -q -S 0x58 0 12288" $f + local ino=$(get_ino $f) + # make a new extent in the middle, sync so the writes don't coalesce + $XFS_IO_PROG -c sync $SCRATCH_MNT + $XFS_IO_PROG -fc "pwrite -q -S 0x59 4096 4096" $f + _fsv_enable $f + _scratch_unmount + # change disk_bytenr to 0, representing a hole + $BTRFS_CORRUPT_BLOCK_PROG -i $ino -x 4096 -f disk_bytenr -v 0 $SCRATCH_DEV > /dev/null 2>&1 + _scratch_mount + validate $f +} + +# plug hole +corrupt_plug_hole() { + local f=$SCRATCH_MNT/plug + $XFS_IO_PROG -fc "pwrite -q -S 0x58 0 12288" $f + local ino=$(get_ino $f) + $XFS_IO_PROG -fc "falloc 4k 4k" $f + _fsv_enable $f + _scratch_unmount + # change disk_bytenr to some value, plugging the hole + $BTRFS_CORRUPT_BLOCK_PROG -i $ino -x 4096 -f disk_bytenr -v 13639680 $SCRATCH_DEV > /dev/null 2>&1 + _scratch_mount + validate $f +} + +# corrupt the fsverity descriptor item indiscriminately (causes EINVAL) +corrupt_verity_descriptor() { + local f=$SCRATCH_MNT/desc + $XFS_IO_PROG -fc "pwrite -q -S 0x58 0 12288" $f + local ino=$(get_ino $f) + _fsv_enable $f + _scratch_unmount + # key for the descriptor item is , + # 88 is X. So we write 5 Xs to the start of the descriptor + $BTRFS_CORRUPT_BLOCK_PROG -r 5 -I $ino,36,1 -v 88 -o 0 -b 5 $SCRATCH_DEV > /dev/null 2>&1 + _scratch_mount + validate $f +} + +# specifically target the root hash in the descriptor (causes EIO) +corrupt_root_hash() { + local f=$SCRATCH_MNT/roothash + $XFS_IO_PROG -fc "pwrite -q -S 0x58 0 12288" $f + local ino=$(get_ino $f) + _fsv_enable $f + _scratch_unmount + $BTRFS_CORRUPT_BLOCK_PROG -r 5 -I $ino,36,1 -v 88 -o 16 -b 1 $SCRATCH_DEV > /dev/null 2>&1 + _scratch_mount + validate $f +} + +# corrupt the Merkle tree data itself +corrupt_merkle_tree() { + local f=$SCRATCH_MNT/merkle + $XFS_IO_PROG -fc "pwrite -q -S 0x58 0 12288" $f + local ino=$(get_ino $f) + _fsv_enable $f + _scratch_unmount + # key for the descriptor item is , + # 88 is X. So we write 5 Xs to somewhere in the middle of the first + # merkle item + $BTRFS_CORRUPT_BLOCK_PROG -r 5 -I $ino,37,0 -v 88 -o 100 -b 5 $SCRATCH_DEV > /dev/null 2>&1 + _scratch_mount + validate $f +} + +# real QA test starts here +_scratch_mkfs >/dev/null +_scratch_mount + +corrupt_inline +corrupt_prealloc_to_reg +corrupt_reg_to_prealloc +corrupt_punch_hole +corrupt_plug_hole +corrupt_verity_descriptor +corrupt_root_hash +corrupt_merkle_tree + +status=0 +exit diff --git a/tests/btrfs/290.out b/tests/btrfs/290.out new file mode 100644 index 00000000..056b114b --- /dev/null +++ b/tests/btrfs/290.out @@ -0,0 +1,25 @@ +QA output created by 290 +inl +pread: Input/output error +pread: Input/output error +prealloc +pread: Input/output error +pread: Input/output error +reg +pread: Input/output error +pread: Input/output error +punch +pread: Input/output error +pread: Input/output error +plug +pread: Input/output error +pread: Input/output error +desc +SCRATCH_MNT/desc: Invalid argument +SCRATCH_MNT/desc: Invalid argument +roothash +pread: Input/output error +pread: Input/output error +merkle +pread: Input/output error +pread: Input/output error diff --git a/tests/btrfs/group b/tests/btrfs/group index 331dd432..13051562 100644 --- a/tests/btrfs/group +++ b/tests/btrfs/group @@ -238,3 +238,4 @@ 233 auto quick subvolume 234 auto quick compress rw 235 auto quick send +290 auto quick verity