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103 lines
2.8 KiB
Bash
103 lines
2.8 KiB
Bash
#!/usr/bin/env bash
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# Copyright (C) 2018 Red Hat, Inc. All rights reserved.
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#
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# This copyrighted material is made available to anyone wishing to use,
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# modify, copy, or redistribute it subject to the terms and conditions
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# of the GNU General Public License v.2.
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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 to the Free Software Foundation,
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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# Test secure table is not leaking data in user land
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SKIP_WITH_LVMPOLLD=1
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SKIP_WITH_LVMLOCKD=1
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# AES key matching rot13 string from dmsecuretest.c */
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SECURE="434e0cbab02ca68ffba9268222c3789d703fe62427b78b308518b3228f6a2122"
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. lib/inittest
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DMTEST="${PREFIX}-test-secure"
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# Masking following glibc features fixes problems for AVX CPUs.
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#export GLIBC_TUNABLES=glibc.cpu.hwcaps=-AVX512F,-AVX2,-AVX512VL,-ERMS,-AVX_Fast_Unaligned_Load,-SSSE3
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# Test needs installed gdb package with gcore app
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which gcore || skip
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aux driver_at_least 4 6 || skip
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# ensure we can create devices (uses dmsetup, etc)
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aux prepare_devs 1
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# check both code versions - linked libdm and internal device_mapper version
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# there should not be any difference
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for i in securetest dmsecuretest ; do
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# 1st. try with empty table
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# 2nd. retry with already exiting DM node - exercise error path also wipes
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for j in empty existing ; do
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rm -f cmdout
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"$i" "$dev1" "$DMTEST" >cmdout 2>&1 &
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PID=$!
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for k in $(seq 1 20); do
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sleep .1
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lines=$(wc -l < cmdout 2>/dev/null || true)
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test "${lines:-0}" = "0" || break
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done
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# 0 8192 crypt aes-xts-plain64 434e0cbab02ca68ffba9268222c3789d703fe62427b78b308518b3228f6a2122 0 253:0 8192
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# crypt device should be loaded
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dmsetup status "$DMTEST"
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# Do not try to get debuginfo on newer gcore
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unset DEBUGINFOD_URLS
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# generate core file for running&sleeping binary
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gcore "$PID" | tee out || skip
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# check we capture core while dmsecuretest was already sleeping
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grep -e "nanosleep\|kernel_vsyscall" out
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kill "$PID" || true
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wait
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cat cmdout
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# $SECURE string must NOT be present in core file
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fail_test=0
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for k in 1 2 4 8; do
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a=0
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b=$(( 64 / k ))
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fail_str=
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while [ "$a" -lt 64 ] ; do
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str=${SECURE:a:b}
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not grep -c "$str" "core.$PID" || fail_str="$fail_str $str"
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a=$(( a + b ))
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done
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if [ -n "$fail_str" ]; then
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echo "!!! Found $fail_str present in core.$PID !!!"
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fail_test=$(( fail_test + 1 ))
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fi
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done
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if [ "$fail_test" -gt 0 ]; then
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## cp "core.$PID" /dev/shm/core
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should dmsetup remove "$DMTEST" # go around weird bugs
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die "!!! Secure string $SECURE or its parts found present in core.$PID !!!"
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fi
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rm -f "core.$PID"
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if test "$j" = empty ; then
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not grep "Device or resource busy" cmdout
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else
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# Device should be already present resulting into error message
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grep "Device or resource busy" cmdout
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dmsetup remove "$DMTEST"
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fi
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done
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done
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