From patchwork Sat Nov 21 08:23:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chandan Babu R X-Patchwork-Id: 11923265 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id AF69B138B for ; Sat, 21 Nov 2020 08:24:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8D3C622254 for ; Sat, 21 Nov 2020 08:24:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="irSwRXW2" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727149AbgKUIX5 (ORCPT ); Sat, 21 Nov 2020 03:23:57 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57182 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726629AbgKUIX5 (ORCPT ); Sat, 21 Nov 2020 03:23:57 -0500 Received: from mail-pg1-x530.google.com (mail-pg1-x530.google.com [IPv6:2607:f8b0:4864:20::530]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8BEECC0613CF; Sat, 21 Nov 2020 00:23:57 -0800 (PST) Received: by mail-pg1-x530.google.com with SMTP id q34so9450630pgb.11; Sat, 21 Nov 2020 00:23:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=8p24vg1QYRAdft/ri+YAlOtLiS09tRhRxSLUxtPEzS8=; b=irSwRXW2NN46Msd37wDLyJNWLcVRf81JZ11HON4D8orqVKHbKujnunGXjgthTsGNnp DZpysf1wtQhAufGDRjQ/ATwjUDboupMG6d0+TC42SEOup2aUaESxljYGbXcH0xr32UzX +/HZVstDMbmnt8QT3e5a5FhVFIiHTRWXeyxJGcCuU8H/U1DG+MqJVg67QeCYUDqoaMyW 1b74h/swRRuyqG8Q/xLPXAA7dgY5qP6EVAhs5/gMKouUY4GA3kw9vyA2hXYqhbTHWqor bpwv82KzB6ByM1/rtXIkAXSt/R7QbgGNIMHw99vr+zPZ9hzS1RL8fsbwTUx5yK3nZWn7 aJBA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=8p24vg1QYRAdft/ri+YAlOtLiS09tRhRxSLUxtPEzS8=; b=BNsh3UhRhHLhaa3UZCAZ2BWd7avTfKVn9lciZWItKp3ezD5lafu0ecd9kK9TOQ2b/x 3wwRz1iBk2wJH3UumtXaWeeX2MFP/WQPkdZyMj+VvjzLyjRrI4Ad2i0Z4yjO1u7w+xaY Djx+QSXlW8KOhSvppm8A/Hha1qmn4wO/Rhs7TLmi/4f30FhrHoa3efSO43Wx+ZlAox7i xQDEeLvsrfk9aZyPweQWbno2BRuFUBn/i761ebTZuGUiSt9fKxhCj1HXrGbREkIanQZf LJJmBnD5JyCOi3v4D5mZksIRPVfntEmCyjbHV7pQ/H7ljqxJTJ2D/BoSECo/Fzsyy0UX laEg== X-Gm-Message-State: AOAM531EX0iJtjhPArFkEv5omRduDFlh/AEz694CQKCBAjSioA3jR559 D6cwvps3IQPRzLzARlcwwmBFlBV/m/4= X-Google-Smtp-Source: ABdhPJzyaLC9hmHtYXB5wQWHyMXI6y8sSULG2UoDCcLRG8oMqVz2PwX1NiF1dleo5BgIf2JKQMt6wg== X-Received: by 2002:a17:90b:1115:: with SMTP id gi21mr14762423pjb.58.1605947036792; Sat, 21 Nov 2020 00:23:56 -0800 (PST) Received: from localhost.localdomain ([122.167.41.102]) by smtp.gmail.com with ESMTPSA id e22sm6167148pfd.153.2020.11.21.00.23.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 21 Nov 2020 00:23:56 -0800 (PST) From: Chandan Babu R To: fstests@vger.kernel.org Cc: Chandan Babu R , linux-xfs@vger.kernel.org, darrick.wong@oracle.com Subject: [PATCH V2 05/11] xfs: Check for extent overflow when adding/removing xattrs Date: Sat, 21 Nov 2020 13:53:26 +0530 Message-Id: <20201121082332.89739-6-chandanrlinux@gmail.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201121082332.89739-1-chandanrlinux@gmail.com> References: <20201121082332.89739-1-chandanrlinux@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: fstests@vger.kernel.org This test verifies that XFS does not cause inode fork's extent count to overflow when adding/removing xattrs. Signed-off-by: Chandan Babu R --- tests/xfs/525 | 176 ++++++++++++++++++++++++++++++++++++++++++++++ tests/xfs/525.out | 19 +++++ tests/xfs/group | 1 + 3 files changed, 196 insertions(+) create mode 100755 tests/xfs/525 create mode 100644 tests/xfs/525.out diff --git a/tests/xfs/525 b/tests/xfs/525 new file mode 100755 index 00000000..07061bbe --- /dev/null +++ b/tests/xfs/525 @@ -0,0 +1,176 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Copyright (c) 2020 Chandan Babu R. All Rights Reserved. +# +# FS QA Test 525 +# +# Verify that XFS does not cause inode fork's extent count to overflow when +# Adding/removing xattrs. +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 + +_cleanup() +{ + cd / + rm -f $tmp.* +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter +. ./common/attr +. ./common/inject +. ./common/populate + +# remove previous $seqres.full before test +rm -f $seqres.full + +# real QA test starts here + +_supported_fs xfs +_require_scratch +_require_attrs +_require_xfs_debug +_require_test_program "punch-alternating" +_require_xfs_io_error_injection "reduce_max_iextents" +_require_xfs_io_error_injection "bmap_alloc_minlen_extent" + +echo "Format and mount fs" +_scratch_mkfs_sized $((1024 * 1024 * 1024)) >> $seqres.full +_scratch_mount >> $seqres.full + +bsize=$(_get_block_size $SCRATCH_MNT) + +# To be able to remove xattr entries in a situation where inserting new xattrs +# is prevented due to possible extent count overflow , each xattr insert +# operation should reserve an extent count for deletion of maximum sized xattr +# apart from the extent count required for the xattr insert operation being +# performed. +# +# The following table gives an estimation of the total extent count that needs +# to be reserved for maximum sized "local" xattr insert operation for various +# block sizes, +# +# |-------+----------------------------------------+----------------------------------| +# | Block | Worst case remove extent count | Total extent | +# | size | (XFS_DA_NODE_MAXDEPTH + (64k / bsize)) | count | +# | | | (Xattr insert extent count (6) + | +# | | | Worst case remove extent count) | +# |-------+----------------------------------------+----------------------------------| +# | 1024 | 69 | 75 | +# | 2048 | 37 | 43 | +# | 4096 | 22 | 28 | +# | 32768 | 7 | 13 | +# | 65536 | 6 | 12 | +# |-------+----------------------------------------+----------------------------------| +# Note: Xattr insert extent count = XFS_DA_NODE_MAXDEPTH + 1 = 6. +# +# 35 (which is > 28) has been chosen as the pseudo maximum extent count in the +# XFS kernel module. Hence xattr tests are limited to block sizes >= 4k. + +if (( $bsize < 4096 )); then + _notrun "FSB size ($bsize) is less than 4k" +fi + +attr_len=255 + +testfile=$SCRATCH_MNT/testfile + +echo "Consume free space" +fillerdir=$SCRATCH_MNT/fillerdir +nr_free_blks=$(stat -f -c '%f' $SCRATCH_MNT) +nr_free_blks=$((nr_free_blks * 90 / 100)) + +_fill_fs $((bsize * nr_free_blks)) $fillerdir $bsize 0 >> $seqres.full 2>&1 + +echo "Create fragmented filesystem" +for dentry in $(ls -1 $fillerdir/); do + $here/src/punch-alternating $fillerdir/$dentry >> $seqres.full +done + +echo "Inject reduce_max_iextents error tag" +_scratch_inject_error reduce_max_iextents 1 + +echo "Inject bmap_alloc_minlen_extent error tag" +_scratch_inject_error bmap_alloc_minlen_extent 1 + +echo "* Set xattrs" + +echo "Create \$testfile" +touch $testfile + +echo "Create xattrs" +nr_attrs=$((bsize * 45 / attr_len)) +for i in $(seq 1 $nr_attrs); do + attr="$(printf "trusted.%0247d" $i)" + $SETFATTR_PROG -n "$attr" $testfile >> $seqres.full 2>&1 + [[ $? != 0 ]] && break +done + +echo "Verify \$testfile's naextent count" + +naextents=$($XFS_IO_PROG -f -c 'stat' $testfile | grep naextents) +naextents=${naextents##fsxattr.naextents = } +if (( $naextents > 35 )); then + echo "Extent count overflow check failed: naextents = $naextents" + exit 1 +fi + +echo "Remove one xattr" +attr="$(printf "trusted.%0247d" 1)" +$SETFATTR_PROG -x "$attr" $testfile + +echo "Remove \$testfile" +rm $testfile + +echo "* Remove xattrs" + +echo "Create \$testfile" +touch $testfile + +echo "Disable reduce_max_iextents error tag" +_scratch_inject_error reduce_max_iextents 0 + +echo "Create initial xattr extents" + +naextents=0 +last="" +start=1 +nr_attrs=$((bsize / attr_len)) + +while (( $naextents < 30 )); do + end=$((start + nr_attrs - 1)) + + for i in $(seq $start $end); do + attr="$(printf "trusted.%0247d" $i)" + $SETFATTR_PROG -n $attr $testfile + done + + start=$((end + 1)) + + naextents=$($XFS_IO_PROG -f -c 'stat' $testfile | grep naextents) + naextents=${naextents##fsxattr.naextents = } +done + +echo "Inject reduce_max_iextents error tag" +_scratch_inject_error reduce_max_iextents 1 + +echo "Remove xattr to trigger -EFBIG" +attr="$(printf "trusted.%0247d" 1)" +$SETFATTR_PROG -x "$attr" $testfile >> $seqres.full 2>&1 +if [[ $? == 0 ]]; then + echo "Xattr removal succeeded; Should have failed " + exit 1 +fi + +rm $testfile && echo "Successfully removed \$testfile" + +# success, all done +status=0 +exit diff --git a/tests/xfs/525.out b/tests/xfs/525.out new file mode 100644 index 00000000..c90dc873 --- /dev/null +++ b/tests/xfs/525.out @@ -0,0 +1,19 @@ +QA output created by 525 +Format and mount fs +Consume free space +Create fragmented filesystem +Inject reduce_max_iextents error tag +Inject bmap_alloc_minlen_extent error tag +* Set xattrs +Create $testfile +Create xattrs +Verify $testfile's naextent count +Remove one xattr +Remove $testfile +* Remove xattrs +Create $testfile +Disable reduce_max_iextents error tag +Create initial xattr extents +Inject reduce_max_iextents error tag +Remove xattr to trigger -EFBIG +Successfully removed $testfile diff --git a/tests/xfs/group b/tests/xfs/group index 7031cabf..bfaac6aa 100644 --- a/tests/xfs/group +++ b/tests/xfs/group @@ -522,6 +522,7 @@ 522 auto quick quota 523 auto quick realtime growfs 524 auto quick punch zero insert collapse +525 auto quick attr 758 auto quick rw attr realtime 759 auto quick rw realtime 760 auto quick rw collapse punch insert zero prealloc