1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
|
#!/usr/bin/env bash
# Copyright (C) 2018 Red Hat, Inc. All rights reserved.
#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions
# of the GNU General Public License v.2.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
# Test secure table is not leaking data in user land
SKIP_WITH_LVMPOLLD=1
SKIP_WITH_LVMLOCKD=1
# AES key matching rot13 string from dmsecuretest.c */
SECURE="434e0cbab02ca68ffba9268222c3789d703fe62427b78b308518b3228f6a2122"
. lib/inittest
DMTEST="${PREFIX}-test-secure"
# Masking following glibc features fixes problems for AVX CPUs.
#export GLIBC_TUNABLES=glibc.cpu.hwcaps=-AVX512F,-AVX2,-AVX512VL,-ERMS,-AVX_Fast_Unaligned_Load,-SSSE3
# Test needs installed gdb package with gcore app
which gcore || skip
aux driver_at_least 4 6 || skip
# ensure we can create devices (uses dmsetup, etc)
aux prepare_devs 1
# check both code versions - linked libdm and internal device_mapper version
# there should not be any difference
for i in securetest dmsecuretest ; do
# 1st. try with empty table
# 2nd. retry with already exiting DM node - exercise error path also wipes
for j in empty existing ; do
rm -f cmdout
"$i" "$dev1" "$DMTEST" >cmdout 2>&1 &
PID=$!
for k in $(seq 1 20); do
sleep .1
lines=$(wc -l < cmdout 2>/dev/null || true)
test "${lines:-0}" = "0" || break
done
# 0 8192 crypt aes-xts-plain64 434e0cbab02ca68ffba9268222c3789d703fe62427b78b308518b3228f6a2122 0 253:0 8192
# crypt device should be loaded
dmsetup status "$DMTEST"
# Do not try to get debuginfo on newer gcore
unset DEBUGINFOD_URLS
# generate core file for running&sleeping binary
gcore "$PID" | tee out || skip
# check we capture core while dmsecuretest was already sleeping
grep -e "nanosleep\|kernel_vsyscall" out
kill "$PID" || true
wait
cat cmdout
# $SECURE string must NOT be present in core file
fail_test=0
for k in 1 2 4 8; do
a=0
b=$(( 64 / k ))
fail_str=
while [ "$a" -lt 64 ] ; do
str=${SECURE:a:b}
not grep -c "$str" "core.$PID" || fail_str="$fail_str $str"
a=$(( a + b ))
done
if [ -n "$fail_str" ]; then
echo "!!! Found $fail_str present in core.$PID !!!"
fail_test=$(( fail_test + 1 ))
fi
done
if [ "$fail_test" -gt 0 ]; then
## cp "core.$PID" /dev/shm/core
should dmsetup remove "$DMTEST" # go around weird bugs
die "!!! Secure string $SECURE or its parts found present in core.$PID !!!"
fi
rm -f "core.$PID"
if test "$j" = empty ; then
not grep "Device or resource busy" cmdout
else
# Device should be already present resulting into error message
grep "Device or resource busy" cmdout
dmsetup remove "$DMTEST"
fi
done
done
|
