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
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
|
; RUN: opt -passes=hwasan -hwasan-instrument-with-calls -hwasan-use-stack-safety=1 -hwasan-generate-tags-with-calls -S < %s | FileCheck %s --check-prefixes=SAFETY,CHECK
; RUN: opt -passes=hwasan -hwasan-instrument-with-calls -hwasan-use-stack-safety=0 -hwasan-generate-tags-with-calls -S < %s | FileCheck %s --check-prefixes=NOSAFETY,CHECK
; RUN: opt -passes=hwasan -hwasan-instrument-with-calls -hwasan-generate-tags-with-calls -S < %s | FileCheck %s --check-prefixes=SAFETY,CHECK
; RUN: opt -passes=hwasan -hwasan-instrument-stack=0 -hwasan-instrument-with-calls -hwasan-generate-tags-with-calls -S < %s | FileCheck %s --check-prefixes=NOSTACK,CHECK
target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
target triple = "aarch64-unknown-linux-gnu"
; Check a safe alloca to ensure it does not get a tag.
define i32 @test_simple(ptr %a) sanitize_hwaddress {
entry:
; CHECK-LABEL: @test_simple
; NOSAFETY: call {{.*}}__hwasan_generate_tag
; NOSAFETY: call {{.*}}__hwasan_store
; SAFETY-NOT: call {{.*}}__hwasan_generate_tag
; SAFETY-NOT: call {{.*}}__hwasan_store
; NOSTACK-NOT: call {{.*}}__hwasan_generate_tag
; NOSTACK-NOT: call {{.*}}__hwasan_store
%buf.sroa.0 = alloca i8, align 4
call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %buf.sroa.0)
store volatile i8 0, ptr %buf.sroa.0, align 4, !tbaa !8
call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %buf.sroa.0)
ret i32 0
}
; Check a non-safe alloca to ensure it gets a tag.
define i32 @test_use(ptr %a) sanitize_hwaddress {
entry:
; CHECK-LABEL: @test_use
; NOSAFETY: call {{.*}}__hwasan_generate_tag
; NOSAFETY: call {{.*}}__hwasan_store
; SAFETY: call {{.*}}__hwasan_generate_tag
; SAFETY-NOT: call {{.*}}__hwasan_store
; NOSTACK-NOT: call {{.*}}__hwasan_generate_tag
; NOSTACK-NOT: call {{.*}}__hwasan_store
%buf.sroa.0 = alloca i8, align 4
call void @use(ptr nonnull %buf.sroa.0)
call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %buf.sroa.0)
store volatile i8 0, ptr %buf.sroa.0, align 4, !tbaa !8
call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %buf.sroa.0)
ret i32 0
}
; Check an alloca with in range GEP to ensure it does not get a tag or check.
define i32 @test_in_range(ptr %a) sanitize_hwaddress {
entry:
; CHECK-LABEL: @test_in_range
; NOSAFETY: call {{.*}}__hwasan_generate_tag
; NOSAFETY: call {{.*}}__hwasan_store
; SAFETY-NOT: call {{.*}}__hwasan_generate_tag
; SAFETY-NOT: call {{.*}}__hwasan_store
; NOSTACK-NOT: call {{.*}}__hwasan_generate_tag
; NOSTACK-NOT: call {{.*}}__hwasan_store
%buf.sroa.0 = alloca [10 x i8], align 4
call void @llvm.lifetime.start.p0(i64 10, ptr nonnull %buf.sroa.0)
store volatile i8 0, ptr %buf.sroa.0, align 4, !tbaa !8
call void @llvm.lifetime.end.p0(i64 10, ptr nonnull %buf.sroa.0)
ret i32 0
}
; Check an alloca with in range GEP to ensure it does not get a tag or check.
define i32 @test_in_range2(ptr %a) sanitize_hwaddress {
entry:
; CHECK-LABEL: @test_in_range2
; NOSAFETY: call {{.*}}__hwasan_generate_tag
; NOSAFETY: call {{.*}}__hwasan_store
; SAFETY-NOT: call {{.*}}__hwasan_generate_tag
; SAFETY-NOT: call {{.*}}__hwasan_store
; NOSTACK-NOT: call {{.*}}__hwasan_generate_tag
; NOSTACK-NOT: call {{.*}}__hwasan_store
%buf.sroa.0 = alloca [10 x i8], align 4
%ptr = getelementptr [10 x i8], ptr %buf.sroa.0, i32 0, i32 9
call void @llvm.lifetime.start.p0(i64 10, ptr nonnull %buf.sroa.0)
store volatile i8 0, ptr %ptr, align 4, !tbaa !8
call void @llvm.lifetime.end.p0(i64 10, ptr nonnull %buf.sroa.0)
ret i32 0
}
define i32 @test_in_range3(ptr %a) sanitize_hwaddress {
entry:
; CHECK-LABEL: @test_in_range3
; NOSAFETY: call {{.*}}__hwasan_generate_tag
; NOSAFETY: call {{.*}}__hwasan_memset
; SAFETY-NOT: call {{.*}}__hwasan_generate_tag
; SAFETY-NOT: call {{.*}}__hwasan_memset
; NOSTACK-NOT: call {{.*}}__hwasan_generate_tag
; NOSTACK-NOT: call {{.*}}__hwasan_memset
%buf.sroa.0 = alloca [10 x i8], align 4
%ptr = getelementptr [10 x i8], ptr %buf.sroa.0, i32 0, i32 9
call void @llvm.memset.p0.i32(ptr %ptr, i8 0, i32 1, i1 true)
ret i32 0
}
define i32 @test_in_range4(ptr %a) sanitize_hwaddress {
entry:
; CHECK-LABEL: @test_in_range4
; NOSAFETY: call {{.*}}__hwasan_generate_tag
; NOSAFETY: call {{.*}}__hwasan_memmove
; SAFETY-NOT: call {{.*}}__hwasan_generate_tag
; SAFETY-NOT: call {{.*}}__hwasan_memmove
; NOSTACK-NOT: call {{.*}}__hwasan_generate_tag
; NOSTACK-NOT: call {{.*}}__hwasan_memmove
%buf.sroa.0 = alloca [10 x i8], align 4
%ptr = getelementptr [10 x i8], ptr %buf.sroa.0, i32 0, i32 9
call void @llvm.memmove.p0.p0.i32(ptr %ptr, ptr %ptr, i32 1, i1 true)
ret i32 0
}
define i32 @test_in_range5(ptr %a) sanitize_hwaddress {
entry:
; CHECK-LABEL: @test_in_range5
; NOSAFETY: call {{.*}}__hwasan_generate_tag
; NOSAFETY: call {{.*}}__hwasan_memmove
; SAFETY-NOT: call {{.*}}__hwasan_generate_tag
; SAFETY-NOT: call {{.*}}__hwasan_memmove
; NOSTACK-NOT: call {{.*}}__hwasan_generate_tag
; NOSTACK-NOT: call {{.*}}__hwasan_memmove
%buf.sroa.0 = alloca [10 x i8], align 4
%ptr = getelementptr [10 x i8], ptr %buf.sroa.0, i32 0, i32 9
%buf.sroa.1 = alloca [10 x i8], align 4
%ptr1 = getelementptr [10 x i8], ptr %buf.sroa.0, i32 0, i32 9
call void @llvm.memmove.p0.p0.i32(ptr %ptr, ptr %ptr1, i32 1, i1 true)
ret i32 0
}
; Check an alloca with out of range GEP to ensure it gets a tag and check.
define i32 @test_out_of_range(ptr %a) sanitize_hwaddress {
entry:
; CHECK-LABEL: @test_out_of_range
; NOSAFETY: call {{.*}}__hwasan_generate_tag
; NOSAFETY: call {{.*}}__hwasan_store
; SAFETY: call {{.*}}__hwasan_generate_tag
; SAFETY: call {{.*}}__hwasan_store
; NOSTACK-NOT: call {{.*}}__hwasan_generate_tag
; NOSTACK-NOT: call {{.*}}__hwasan_store
%buf.sroa.0 = alloca [10 x i8], align 4
%ptr = getelementptr [10 x i8], ptr %buf.sroa.0, i32 0, i32 10
call void @llvm.lifetime.start.p0(i64 10, ptr nonnull %buf.sroa.0)
store volatile i8 0, ptr %ptr, align 4, !tbaa !8
call void @llvm.lifetime.end.p0(i64 10, ptr nonnull %buf.sroa.0)
ret i32 0
}
define i32 @test_out_of_range3(ptr %a) sanitize_hwaddress {
entry:
; CHECK-LABEL: @test_out_of_range3
; NOSAFETY: call {{.*}}__hwasan_generate_tag
; NOSAFETY: call {{.*}}__hwasan_memset
; SAFETY: call {{.*}}__hwasan_generate_tag
; SAFETY: call {{.*}}__hwasan_memset
; NOSTACK-NOT: call {{.*}}__hwasan_generate_tag
; NOSTACK-NOT: call {{.*}}__hwasan_memset
%buf.sroa.0 = alloca [10 x i8], align 4
%ptr = getelementptr [10 x i8], ptr %buf.sroa.0, i32 0, i32 9
call void @llvm.memset.p0.i32(ptr %ptr, i8 0, i32 2, i1 true)
ret i32 0
}
define i32 @test_out_of_range4(ptr %a) sanitize_hwaddress {
entry:
; CHECK-LABEL: @test_out_of_range4
; NOSAFETY: call {{.*}}__hwasan_generate_tag
; NOSAFETY: call {{.*}}__hwasan_memmove
; SAFETY: call {{.*}}__hwasan_generate_tag
; SAFETY: call {{.*}}__hwasan_memmove
; NOSTACK-NOT: call {{.*}}__hwasan_generate_tag
; NOSTACK-NOT: call {{.*}}__hwasan_memmove
%buf.sroa.0 = alloca [10 x i8], align 4
%ptr = getelementptr [10 x i8], ptr %buf.sroa.0, i32 0, i32 9
call void @llvm.memmove.p0.p0.i32(ptr %ptr, ptr %ptr, i32 2, i1 true)
ret i32 0
}
define i32 @test_out_of_range5(ptr %a) sanitize_hwaddress {
entry:
; CHECK-LABEL: @test_out_of_range5
; NOSAFETY: call {{.*}}__hwasan_generate_tag
; NOSAFETY: call {{.*}}__hwasan_memmove
; SAFETY: call {{.*}}__hwasan_generate_tag
; SAFETY: call {{.*}}__hwasan_memmove
; NOSTACK-NOT: call {{.*}}__hwasan_generate_tag
; NOSTACK-NOT: call {{.*}}__hwasan_memmove
%buf.sroa.0 = alloca [10 x i8], align 4
%ptr = getelementptr [10 x i8], ptr %buf.sroa.0, i32 0, i32 9
%buf.sroa.1 = alloca [10 x i8], align 4
%ptr1 = getelementptr [10 x i8], ptr %buf.sroa.0, i32 0, i32 9
call void @llvm.lifetime.start.p0(i64 10, ptr nonnull %buf.sroa.0)
call void @llvm.lifetime.end.p0(i64 10, ptr nonnull %buf.sroa.0)
call void @llvm.lifetime.start.p0(i64 10, ptr nonnull %buf.sroa.1)
call void @llvm.memmove.p0.p0.i32(ptr %ptr, ptr %ptr1, i32 1, i1 true)
call void @llvm.lifetime.end.p0(i64 10, ptr nonnull %buf.sroa.1)
ret i32 0
}
; Check an alloca with potentially out of range GEP to ensure it gets a tag and
; check.
define i32 @test_potentially_out_of_range(ptr %a) sanitize_hwaddress {
entry:
; CHECK-LABEL: @test_potentially_out_of_range
; NOSAFETY: call {{.*}}__hwasan_generate_tag
; NOSAFETY: call {{.*}}__hwasan_store
; SAFETY: call {{.*}}__hwasan_generate_tag
; SAFETY: call {{.*}}__hwasan_store
; NOSTACK-NOT: call {{.*}}__hwasan_generate_tag
; NOSTACK-NOT: call {{.*}}__hwasan_store
%buf.sroa.0 = alloca [10 x i8], align 4
%off = call i32 @getoffset()
%ptr = getelementptr [10 x i8], ptr %buf.sroa.0, i32 0, i32 %off
call void @llvm.lifetime.start.p0(i64 10, ptr nonnull %ptr)
store volatile i8 0, ptr %ptr, align 4, !tbaa !8
call void @llvm.lifetime.end.p0(i64 10, ptr nonnull %ptr)
ret i32 0
}
define i32 @test_potentially_out_of_range2(ptr %a) sanitize_hwaddress {
entry:
; CHECK-LABEL: @test_potentially_out_of_range2
; NOSAFETY: call {{.*}}__hwasan_generate_tag
; NOSAFETY: call {{.*}}__hwasan_memmove
; SAFETY-NOT: call {{.*}}__hwasan_generate_tag
; SAFETY: call {{.*}}__hwasan_memmove
; NOSTACK-NOT: call {{.*}}__hwasan_generate_tag
; NOSTACK: call {{.*}}__hwasan_memmove
%buf.sroa.0 = alloca [10 x i8], align 4
%ptr = getelementptr [10 x i8], ptr %buf.sroa.0, i32 0, i32 9
call void @llvm.memmove.p0.p0.i32(ptr %ptr, ptr %a, i32 1, i1 true)
ret i32 0
}
; Check an alloca with potentially out of range GEP to ensure it gets a tag and
; check.
define i32 @test_unclear(ptr %a) sanitize_hwaddress {
entry:
; CHECK-LABEL: @test_unclear
; NOSAFETY: call {{.*}}__hwasan_generate_tag
; NOSAFETY: call {{.*}}__hwasan_store
; SAFETY: call {{.*}}__hwasan_generate_tag
; SAFETY: call {{.*}}__hwasan_store
; NOSTACK-NOT: call {{.*}}__hwasan_generate_tag
; NOSTACK: call {{.*}}__hwasan_store
%buf.sroa.0 = alloca i8, align 4
%ptr = call ptr @getptr(ptr %buf.sroa.0)
call void @llvm.lifetime.start.p0(i64 10, ptr nonnull %ptr)
store volatile i8 0, ptr %ptr, align 4, !tbaa !8
call void @llvm.lifetime.end.p0(i64 10, ptr nonnull %ptr)
ret i32 0
}
define i32 @test_select(ptr %a) sanitize_hwaddress {
entry:
; CHECK-LABEL: @test_select
; NOSAFETY: call {{.*}}__hwasan_generate_tag
; NOSAFETY: call {{.*}}__hwasan_store
; SAFETY: call {{.*}}__hwasan_generate_tag
; SAFETY: call {{.*}}__hwasan_store
; NOSTACK-NOT: call {{.*}}__hwasan_generate_tag
; NOSTACK: call {{.*}}__hwasan_store
%x = call ptr @getptr(ptr %a)
%buf.sroa.0 = alloca i8, align 4
call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %buf.sroa.0)
%c = call i1 @cond()
%ptr = select i1 %c, ptr %x, ptr %buf.sroa.0
store volatile i8 0, ptr %ptr, align 4, !tbaa !8
call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %buf.sroa.0)
ret i32 0
}
; Check whether we see through the returns attribute of functions.
define i32 @test_retptr(ptr %a) sanitize_hwaddress {
entry:
; CHECK-LABEL: @test_retptr
; NOSAFETY: call {{.*}}__hwasan_generate_tag
; NOSAFETY: call {{.*}}__hwasan_store
; SAFETY: call {{.*}}__hwasan_generate_tag
; SAFETY-NOT: call {{.*}}__hwasan_store
; NOSTACK-NOT: call {{.*}}__hwasan_generate_tag
; NOSTACK-NOT: call {{.*}}__hwasan_store
%buf.sroa.0 = alloca i8, align 4
call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %buf.sroa.0)
%ptr = call ptr @retptr(ptr %buf.sroa.0)
store volatile i8 0, ptr %ptr, align 4, !tbaa !8
call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %buf.sroa.0)
ret i32 0
}
; Function Attrs: argmemonly mustprogress nofree nosync nounwind willreturn
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture)
; Function Attrs: argmemonly mustprogress nofree nosync nounwind willreturn
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture)
declare void @llvm.memset.p0.i32(ptr, i8, i32, i1)
declare void @llvm.memcpy.p0.p0.i32(ptr, ptr, i32, i1)
declare void @llvm.memmove.p0.p0.i32(ptr, ptr, i32, i1)
declare i1 @cond()
declare void @use(ptr nocapture)
declare i32 @getoffset()
declare ptr @getptr(ptr nocapture)
declare ptr @retptr(ptr returned)
!8 = !{!9, !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C/C++ TBAA"}
|
