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Message-ID: <20220727071140.3886185-1-sunke32@huawei.com> Date: Wed, 27 Jul 2022 15:11:40 +0800 From: Sun Ke <sunke32@...wei.com> To: <fstests@...r.kernel.org> CC: <zlang@...nel.org>, <linux-ext4@...r.kernel.org>, <sunke32@...wei.com> Subject: [PATCH v5] ext4: resize an ext4 which resize_inode feature is disabled but has reserved GDT blocks. A regression test for b55c3cd102a6 ("ext4: add reserved GDT blocks check"). Make sure there's not kernel crash, if resize an ext4 which resize_inode feature is disabled but has reserved GDT blocks. Signed-off-by: Sun Ke <sunke32@...wei.com> --- tests/ext4/057 | 41 +++++++++++++++++++++++++++++++++++++++++ tests/ext4/057.out | 2 ++ 2 files changed, 43 insertions(+) create mode 100755 tests/ext4/057 create mode 100644 tests/ext4/057.out diff --git a/tests/ext4/057 b/tests/ext4/057 new file mode 100755 index 00000000..969da377 --- /dev/null +++ b/tests/ext4/057 @@ -0,0 +1,41 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Copyright (c) 2022 HUAWEI. All Rights Reserved. +# +# FS QA Test 057 +# +# A regression test for b55c3cd102a6 ("ext4: add reserved GDT blocks check"). +# Make sure there's not kernel crash, if resize an ext4 which resize_inode +# feature is disabled but has reserved GDT blocks. +# +. ./common/preamble +_begin_fstest auto resize quick + +# real QA test starts here +_supported_fs ext4 +_fixed_by_kernel_commit b55c3cd102a6 \ + "ext4: add reserved GDT blocks check" + +_require_command "$RESIZE2FS_PROG" resize2fs +_require_command "$DEBUGFS_PROG" debugfs +_require_scratch_size_nocheck $((1024 * 1024)) + +# Initalize a 512M ext4 fs with resize_inode feature disabled +dev_size=$((512 * 1024 * 1024)) +MKFS_OPTIONS="-O ^resize_inode $MKFS_OPTIONS" _scratch_mkfs_sized $dev_size \ + >>$seqres.full 2>&1 || _fail "mkfs failed" + +# Force some reserved GDT blocks to trigger the bug +$DEBUGFS_PROG -w -R "set_super_value s_reserved_gdt_blocks 100" $SCRATCH_DEV \ + >>$seqres.full 2>&1 +$DEBUGFS_PROG -R "show_super_stats -h" $SCRATCH_DEV 2>/dev/null | \ + grep "Reserved GDT blocks" + +_scratch_mount + +# Expect no crash from this resize operation +$RESIZE2FS_PROG $SCRATCH_DEV 1G >> $seqres.full 2>&1 + +# success, all done +status=0 +exit diff --git a/tests/ext4/057.out b/tests/ext4/057.out new file mode 100644 index 00000000..99423e16 --- /dev/null +++ b/tests/ext4/057.out @@ -0,0 +1,2 @@ +QA output created by 057 +Reserved GDT blocks: 100 -- 2.13.6
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