mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Eric Biggers
7400c10e50
Add an ext4-specific regression test for a bug which caused ext4 to crash when mounting a filesystem which had an encrypted inode on its orphan list. This bug was present in kernels v4.1 and later. It has been fixed in v4.11-rc1, v4.10.4, v4.9.16, and v4.4.55. Cc: Theodore Ts'o <tytso@mit.edu> Cc: Michael Halcrow <mhalcrow@google.com> Signed-off-by: Eric Biggers <ebiggers@google.com> Reviewed-by: Eryu Guan <eguan@redhat.com> Signed-off-by: Eryu Guan <eguan@redhat.com>
88 lines
2.6 KiB
Bash
Executable File
88 lines
2.6 KiB
Bash
Executable File
#! /bin/bash
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# FS QA Test ext4/024
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#
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# Regression test for 0d06863f903a ("ext4: don't BUG when truncating encrypted
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# inodes on the orphan list").
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2017 Google, Inc. All Rights Reserved.
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#
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# Author: Eric Biggers <ebiggers@google.com>
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it would be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#-----------------------------------------------------------------------
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seq=`basename $0`
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seqres=$RESULT_DIR/$seq
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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cd /
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rm -f $tmp.*
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}
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# get standard environment and checks
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. ./common/rc
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. ./common/encrypt
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# remove previous $seqres.full before test
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rm -f $seqres.full
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# real QA test starts here
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_supported_fs ext4
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_supported_os Linux
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_require_scratch_encryption
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_require_xfs_io_command "set_encpolicy"
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_require_command "$KEYCTL_PROG" keyctl
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_new_session_keyring
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#
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# Create an encrypted file whose size is not a multiple of the filesystem block
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# size, then add it to the orphan list.
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#
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# We create the encrypted file normally, rather than use debugfs to force the
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# inode flags to ENCRYPT|EXTENTS as done in the example listed in the commit
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# message of the kernel fix, because forcing the inode flags is incompatible
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# with some MKFS_OPTIONS such as inline_data or ^extents.
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#
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# This choice does, however, have the disadvantage that this test won't detect
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# the bug in as many situations, such as in kernels configured without
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# encryption support.
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#
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_scratch_mkfs_encrypted &>>$seqres.full
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_scratch_mount
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mkdir $SCRATCH_MNT/edir
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keydesc=$(_generate_encryption_key)
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$XFS_IO_PROG -c "set_encpolicy $keydesc" $SCRATCH_MNT/edir
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echo foo > $SCRATCH_MNT/edir/file
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inum=$(stat -c '%i' $SCRATCH_MNT/edir/file)
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_scratch_unmount
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debugfs -w -R "set_super_value s_last_orphan $inum" $SCRATCH_DEV &>>$seqres.full
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# Try to mount the filesystem. This would hit a BUG() in fs/ext4/inode.c.
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_scratch_mount
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# success, all done
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echo "Didn't crash!"
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status=0
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exit
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