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
|
//===-- msan_report.cc -----------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file is a part of MemorySanitizer.
//
// Error reporting.
//===----------------------------------------------------------------------===//
#include "msan.h"
#include "sanitizer_common/sanitizer_common.h"
#include "sanitizer_common/sanitizer_mutex.h"
#include "sanitizer_common/sanitizer_stackdepot.h"
using namespace __sanitizer;
static StaticSpinMutex report_mu;
namespace __msan {
static void DescribeOrigin(u32 origin) {
if (flags()->verbosity)
Printf(" raw origin id: %d\n", origin);
if (const char *so = __msan_get_origin_descr_if_stack(origin)) {
char* s = internal_strdup(so);
char* sep = internal_strchr(s, '@');
CHECK(sep);
*sep = '\0';
Printf(" Uninitialised value was created by an allocation of '%s'"
" in the stack frame of function '%s'\n", s, sep + 1);
InternalFree(s);
} else {
uptr size = 0;
const uptr *trace = StackDepotGet(origin, &size);
Printf(" Uninitialised value was created by a heap allocation\n");
StackTrace::PrintStack(trace, size, true, "", 0);
}
}
void ReportUMR(StackTrace *stack, u32 origin) {
if (!__msan::flags()->report_umrs) return;
GenericScopedLock<StaticSpinMutex> lock(&report_mu);
Report(" WARNING: Use of uninitialized value\n");
StackTrace::PrintStack(stack->trace, stack->size, true, "", 0);
if (origin) {
DescribeOrigin(origin);
}
}
void ReportExpectedUMRNotFound(StackTrace *stack) {
GenericScopedLock<StaticSpinMutex> lock(&report_mu);
Printf(" WARNING: Expected use of uninitialized value not found\n");
StackTrace::PrintStack(stack->trace, stack->size, true, "", 0);
}
} // namespace msan
|
