From: Lukas Czerner Subject: [PATCH] generic: test bug when zero range is crossing isize within single block Date: Fri, 24 Apr 2015 16:38:29 +0200 Message-ID: <1429886309-30383-1-git-send-email-lczerner@redhat.com> Cc: linux-ext4@vger.kernel.org, Lukas Czerner To: fstests@vger.kernel.org Return-path: Sender: fstests-owner@vger.kernel.org List-Id: linux-ext4.vger.kernel.org Exercise the situation that cause ext4 to BUG_ON() when we use zero range to zero a range which starts within the isize but ends past the isize but still in the same block. This particular problem has only been seen on systems with page_size > block_size. This tests exercises the problem fixed in kernel with commit a94b84e9ea3922220ae8bd654f6cb202904bbcac ext4: Allocate entire range in zero range Signed-off-by: Lukas Czerner --- tests/generic/084 | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++ tests/generic/084.out | 1 + tests/generic/group | 1 + 3 files changed, 62 insertions(+) create mode 100644 tests/generic/084 create mode 100644 tests/generic/084.out diff --git a/tests/generic/084 b/tests/generic/084 new file mode 100644 index 0000000..5066b14 --- /dev/null +++ b/tests/generic/084 @@ -0,0 +1,60 @@ +#! /bin/bash +# FS QA Test 084 +# +# Exercise the situation that cause ext4 to BUG_ON() when we use +# zero range to zero a range which starts within the isize but ends +# past the isize but still in the same block. This particular problem +# has only been seen on systems with page_size > block_size. +# +#----------------------------------------------------------------------- +# Copyright (c) 2015 Red Hat, Inc., Lukas Czerner +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation. +# +# This program is distributed in the hope that it would be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write the Free Software Foundation, +# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +#----------------------------------------------------------------------- +# + +seq=`basename $0` +seqres=$RESULT_DIR/$seq +echo "QA output created by $seq" + +here=`pwd` +tmp=/tmp/$$ +status=1 # failure is the default! +trap "_cleanup; exit \$status" 0 1 2 3 15 + +_cleanup() +{ + cd / + rm -f $tmp.* +} + +# get standard environment, filters and checks +. ./common/rc +. ./common/filter + +# real QA test starts here + +# Modify as appropriate. +_supported_fs generic +_supported_os IRIX Linux +_require_test +_require_xfs_io_command "fzero" + +testfile=$TEST_DIR/$seq.$$ + +$XFS_IO_PROG -f -c "pwrite 4096 512" -c "fzero 4351 512" $testfile > $seqres.full 2>&1 + +# success, all done +status=0 +exit diff --git a/tests/generic/084.out b/tests/generic/084.out new file mode 100644 index 0000000..d0aa380 --- /dev/null +++ b/tests/generic/084.out @@ -0,0 +1 @@ +QA output created by 084 diff --git a/tests/generic/group b/tests/generic/group index c6ea3d8..6cb7dc3 100644 --- a/tests/generic/group +++ b/tests/generic/group @@ -86,6 +86,7 @@ 081 auto quick 082 auto prealloc preallocrw quick 083 rw auto enospc stress +084 auto prealloc quick 088 perms auto quick 089 metadata auto 091 rw auto quick -- 1.8.3.1