t_msan_unpoison.sh revision 1.1
1 # Copyright (c) 2018 The NetBSD Foundation, Inc. 2 # All rights reserved. 3 # 4 # This code is derived from software contributed to The NetBSD Foundation 5 # by Yang Zheng. 6 # 7 # Redistribution and use in source and binary forms, with or without 8 # modification, are permitted provided that the following conditions 9 # are met: 10 # 1. Redistributions of source code must retain the above copyright 11 # notice, this list of conditions and the following disclaimer. 12 # 2. Redistributions in binary form must reproduce the above copyright 13 # notice, this list of conditions and the following disclaimer in the 14 # documentation and/or other materials provided with the distribution. 15 # 16 # THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 # ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 # POSSIBILITY OF SUCH DAMAGE. 27 # 28 29 test_target() 30 { 31 SUPPORT='n' 32 if uname -m | grep -q "amd64" && command -v cc >/dev/null 2>&1 && \ 33 ! echo __clang__ | cc -E - | grep -q __clang__; then 34 # only clang with major version newer than 7 is supported 35 CLANG_MAJOR=`echo __clang_major__ | cc -E - | grep -o '^[[:digit:]]'` 36 if [ "$CLANG_MAJOR" -ge "7" ]; then 37 SUPPORT='y' 38 fi 39 fi 40 } 41 42 atf_test_case unpoison 43 unpoison_head() { 44 atf_set "descr" "Test memory sanitizer for __msan_unpoison interface" 45 atf_set "require.progs" "cc paxctl" 46 } 47 48 atf_test_case unpoison_profile 49 unpoison_profile_head() { 50 atf_set "descr" "Test memory sanitizer for __msan_unpoison with profiling option" 51 atf_set "require.progs" "cc paxctl" 52 } 53 atf_test_case unpoison_pic 54 unpoison_pic_head() { 55 atf_set "descr" "Test memory sanitizer for __msan_unpoison with position independent code (PIC) flag" 56 atf_set "require.progs" "cc paxctl" 57 } 58 atf_test_case unpoison_pie 59 unpoison_pie_head() { 60 atf_set "descr" "Test memory sanitizer for __msan_unpoison with position independent execution (PIE) flag" 61 atf_set "require.progs" "cc paxctl" 62 } 63 64 unpoison_body(){ 65 cat > test.c << EOF 66 #include <sanitizer/msan_interface.h> 67 68 int main(void) { 69 char p[32] = {}; 70 char q[32] = {}; 71 __msan_poison(p + 10, 2); 72 __msan_poison(q, 32); 73 __msan_unpoison(p + 10, 2); 74 __msan_unpoison_string(q); 75 __msan_check_mem_is_initialized(p, 32); 76 __msan_check_mem_is_initialized(p, 32); 77 return 0; 78 } 79 EOF 80 81 cc -fsanitize=memory -o test test.c 82 paxctl +a test 83 atf_check -s ignore -o ignore -e not-match:"WARNING: MemorySanitizer: use-of-uninitialized-value" ./test 84 } 85 86 unpoison_profile_body(){ 87 cat > test.c << EOF 88 #include <sanitizer/msan_interface.h> 89 90 int main(void) { 91 char p[32] = {}; 92 char q[32] = {}; 93 __msan_poison(p + 10, 2); 94 __msan_poison(q, 32); 95 __msan_unpoison(p + 10, 2); 96 __msan_unpoison_string(q); 97 __msan_check_mem_is_initialized(p, 32); 98 __msan_check_mem_is_initialized(p, 32); 99 return 0; 100 } 101 EOF 102 103 cc -fsanitize=memory -o test -pg test.c 104 paxctl +a test 105 atf_check -s ignore -o ignore -e not-match:"WARNING: MemorySanitizer: use-of-uninitialized-value" ./test 106 } 107 108 unpoison_pic_body(){ 109 cat > test.c << EOF 110 #include <stdio.h> 111 #include <stdlib.h> 112 int help(int); 113 int main(int argc, char **argv) {return help(argc);} 114 EOF 115 116 cat > pic.c << EOF 117 #include <sanitizer/msan_interface.h> 118 119 int help(int argc) { 120 char p[32] = {}; 121 char q[32] = {}; 122 __msan_poison(p + 10, 2); 123 __msan_poison(q, 32); 124 __msan_unpoison(p + 10, 2); 125 __msan_unpoison_string(q); 126 __msan_check_mem_is_initialized(p, 32); 127 __msan_check_mem_is_initialized(p, 32); 128 return 0; 129 } 130 EOF 131 132 cc -fsanitize=memory -fPIC -shared -o libtest.so pic.c 133 cc -o test test.c -fsanitize=memory -L. -ltest 134 paxctl +a test 135 136 export LD_LIBRARY_PATH=. 137 atf_check -s ignore -o ignore -e not-match:"WARNING: MemorySanitizer: use-of-uninitialized-value" ./test 138 } 139 unpoison_pie_body(){ 140 141 #check whether -pie flag is supported on this architecture 142 if ! cc -pie -dM -E - < /dev/null 2>/dev/null >/dev/null; then 143 atf_set_skip "cc -pie not supported on this architecture" 144 fi 145 cat > test.c << EOF 146 #include <sanitizer/msan_interface.h> 147 148 int main(void) { 149 char p[32] = {}; 150 char q[32] = {}; 151 __msan_poison(p + 10, 2); 152 __msan_poison(q, 32); 153 __msan_unpoison(p + 10, 2); 154 __msan_unpoison_string(q); 155 __msan_check_mem_is_initialized(p, 32); 156 __msan_check_mem_is_initialized(p, 32); 157 return 0; 158 } 159 EOF 160 161 cc -fsanitize=memory -o test -fpie -pie test.c 162 paxctl +a test 163 atf_check -s ignore -o ignore -e not-match:"WARNING: MemorySanitizer: use-of-uninitialized-value" ./test 164 } 165 166 atf_test_case target_not_supported 167 target_not_supported_head() 168 { 169 atf_set "descr" "Test forced skip" 170 } 171 172 atf_init_test_cases() 173 { 174 test_target 175 test $SUPPORT = 'n' && { 176 atf_add_test_case target_not_supported 177 return 0 178 } 179 atf_add_test_case unpoison 180 atf_add_test_case unpoison_profile 181 atf_add_test_case unpoison_pie 182 atf_add_test_case unpoison_pic 183 } 184
Indexes created Wed Oct 01 15:09:59 GMT 2025