1 // RUN: %clang_dfsan -gmlt -DOFFSET=0 -mllvm -dfsan-track-origins=1 %s -o %t && \
2 // RUN: %run %t >%t.out 2>&1
3 // RUN: FileCheck %s --check-prefix=CHECK0 < %t.out
4 //
5 // RUN: %clang_dfsan -gmlt -DOFFSET=10 -mllvm -dfsan-track-origins=1 %s -o %t && \
6 // RUN: %run %t >%t.out 2>&1
7 // RUN: FileCheck %s --check-prefix=CHECK10 < %t.out
8 //
9 // REQUIRES: x86_64-target-arch
10
11 #include <sanitizer/dfsan_interface.h>
12
13 #include <string.h>
14
15 char xx[10000];
16 char yy[10000];
17 volatile int idx = 30;
18
fn_g(char a,char b)19 __attribute__((noinline)) void fn_g(char a, char b) {
20 xx[idx] = a; xx[idx + 10] = b;
21 }
22
fn_f(char a,char b)23 __attribute__((noinline)) void fn_f(char a, char b) {
24 fn_g(a, b);
25 }
26
fn_h()27 __attribute__((noinline)) void fn_h() {
28 memcpy(&yy[2], &xx[2], sizeof(xx) - 4);
29 }
30
fn_i()31 __attribute__((noinline)) void fn_i() {
32 memmove(&yy[25], &yy, 7500);
33 }
34
main(int argc,char * argv[])35 int main(int argc, char *argv[]) {
36 char volatile z1 = 0;
37 int volatile buffer = 0;
38 char volatile z2 = 0;
39 dfsan_set_label(8, (void *)&z1, sizeof(z1));
40 dfsan_set_label(16, (void *)&z2, sizeof(z2));
41 fn_f(z1, z2);
42 fn_h();
43 fn_i();
44 dfsan_print_origin_trace(&yy[25 + idx + OFFSET], NULL);
45 return 0;
46 }
47
48 // CHECK0: Taint value 0x8 {{.*}} origin tracking ()
49 // CHECK0: Origin value: {{.*}}, Taint value was stored to memory at
50 // CHECK0: #0 {{.*}} in fn_i.dfsan {{.*}}origin_unaligned_memtrans.c:[[@LINE-18]]
51 // CHECK0: #1 {{.*}} in main {{.*}}origin_unaligned_memtrans.c:[[@LINE-8]]
52
53 // CHECK0: Origin value: {{.*}}, Taint value was stored to memory at
54 // CHECK0: #0 {{.*}} in fn_h.dfsan {{.*}}origin_unaligned_memtrans.c:[[@LINE-26]]
55 // CHECK0: #1 {{.*}} in main {{.*}}origin_unaligned_memtrans.c:[[@LINE-13]]
56
57 // CHECK0: Origin value: {{.*}}, Taint value was stored to memory at
58 // CHECK0: #0 {{.*}} in fn_g.dfsan {{.*}}origin_unaligned_memtrans.c:[[@LINE-38]]
59 // CHECK0: #1 {{.*}} in fn_f.dfsan {{.*}}origin_unaligned_memtrans.c:[[@LINE-35]]
60 // CHECK0: #2 {{.*}} in main {{.*}}origin_unaligned_memtrans.c:[[@LINE-19]]
61
62 // CHECK0: Origin value: {{.*}}, Taint value was created at
63 // CHECK0: #0 {{.*}} in main {{.*}}origin_unaligned_memtrans.c:[[@LINE-24]]
64
65 // CHECK10: Taint value 0x10 {{.*}} origin tracking
66 // CHECK10: Origin value: {{.*}}, Taint value was stored to memory at
67 // CHECK10: #0 {{.*}} in fn_i.dfsan {{.*}}origin_unaligned_memtrans.c:[[@LINE-35]]
68 // CHECK10: #1 {{.*}} in main {{.*}}origin_unaligned_memtrans.c:[[@LINE-25]]
69
70 // CHECK10: Origin value: {{.*}}, Taint value was stored to memory at
71 // CHECK10: #0 {{.*}} in fn_h.dfsan {{.*}}origin_unaligned_memtrans.c:[[@LINE-43]]
72 // CHECK10: #1 {{.*}} in main {{.*}}origin_unaligned_memtrans.c:[[@LINE-30]]
73
74 // CHECK10: Origin value: {{.*}}, Taint value was stored to memory at
75 // CHECK10: #0 {{.*}} in fn_g.dfsan {{.*}}origin_unaligned_memtrans.c:[[@LINE-55]]
76 // CHECK10: #1 {{.*}} in fn_f.dfsan {{.*}}origin_unaligned_memtrans.c:[[@LINE-52]]
77 // CHECK10: #2 {{.*}} in main {{.*}}origin_unaligned_memtrans.c:[[@LINE-36]]
78
79 // CHECK10: Origin value: {{.*}}, Taint value was created at
80 // CHECK10: #0 {{.*}} in main {{.*}}origin_unaligned_memtrans.c:[[@LINE-40]]
81