Source-Changes-HG archive
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]
[src/trunk]: src/external/gpl3/gcc/dist/libsanitizer final GCC 8.3 sanitizer ...
details: https://anonhg.NetBSD.org/src/rev/9245dd815c05
branches: trunk
changeset: 1003818:9245dd815c05
user: mrg <mrg%NetBSD.org@localhost>
date: Tue Oct 01 21:13:43 2019 +0000
description:
final GCC 8.3 sanitizer merge, untested.
diffstat:
external/gpl3/gcc/dist/libsanitizer/asan/asan_allocator.h | 5 +
external/gpl3/gcc/dist/libsanitizer/lsan/lsan_allocator.cc | 119 +++++----
external/gpl3/gcc/dist/libsanitizer/sanitizer_common/sanitizer_internal_defs.h | 105 ++++++--
3 files changed, 156 insertions(+), 73 deletions(-)
diffs (truncated from 385 to 300 lines):
diff -r f3bccc7618b2 -r 9245dd815c05 external/gpl3/gcc/dist/libsanitizer/asan/asan_allocator.h
--- a/external/gpl3/gcc/dist/libsanitizer/asan/asan_allocator.h Tue Oct 01 21:13:30 2019 +0000
+++ b/external/gpl3/gcc/dist/libsanitizer/asan/asan_allocator.h Tue Oct 01 21:13:43 2019 +0000
@@ -140,8 +140,13 @@
const uptr kAllocatorSize = 0x8000000000ULL; // 500G
typedef DefaultSizeClassMap SizeClassMap;
# else
+#if _LP64
const uptr kAllocatorSpace = 0x600000000000ULL;
const uptr kAllocatorSize = 0x40000000000ULL; // 4T.
+#else
+const uptr kAllocatorSpace = 0x60000000UL;
+const uptr kAllocatorSize = 0x40000000ULL; // 2G.
+#endif
typedef DefaultSizeClassMap SizeClassMap;
# endif
struct AP64 { // Allocator64 parameters. Deliberately using a short name.
diff -r f3bccc7618b2 -r 9245dd815c05 external/gpl3/gcc/dist/libsanitizer/lsan/lsan_allocator.cc
--- a/external/gpl3/gcc/dist/libsanitizer/lsan/lsan_allocator.cc Tue Oct 01 21:13:30 2019 +0000
+++ b/external/gpl3/gcc/dist/libsanitizer/lsan/lsan_allocator.cc Tue Oct 01 21:13:43 2019 +0000
@@ -13,7 +13,9 @@
#include "lsan_allocator.h"
#include "sanitizer_common/sanitizer_allocator.h"
+#include "sanitizer_common/sanitizer_allocator_checks.h"
#include "sanitizer_common/sanitizer_allocator_interface.h"
+#include "sanitizer_common/sanitizer_errno.h"
#include "sanitizer_common/sanitizer_internal_defs.h"
#include "sanitizer_common/sanitizer_stackdepot.h"
#include "sanitizer_common/sanitizer_stacktrace.h"
@@ -22,64 +24,30 @@
extern "C" void *memset(void *ptr, int value, uptr num);
namespace __lsan {
-
-struct ChunkMetadata {
- u8 allocated : 8; // Must be first.
- ChunkTag tag : 2;
-#ifdef _LP64
- uptr requested_size : 54;
-#else
- uptr requested_size : 30;
-#endif
- u32 stack_trace_id;
-};
-
-#if defined(__mips64) || defined(__aarch64__)
+#if defined(__i386__) || defined(__arm__)
+static const uptr kMaxAllowedMallocSize = 1UL << 30;
+#elif defined(__mips64) || defined(__aarch64__)
static const uptr kMaxAllowedMallocSize = 4UL << 30;
-static const uptr kRegionSizeLog = 20;
-static const uptr kNumRegions = SANITIZER_MMAP_RANGE_SIZE >> kRegionSizeLog;
-typedef TwoLevelByteMap<(kNumRegions >> 12), 1 << 12> ByteMap;
-typedef CompactSizeClassMap SizeClassMap;
-typedef SizeClassAllocator32<0, SANITIZER_MMAP_RANGE_SIZE,
- sizeof(ChunkMetadata), SizeClassMap, kRegionSizeLog, ByteMap>
- PrimaryAllocator;
#else
#if _LP64
static const uptr kMaxAllowedMallocSize = 8UL << 30;
#else
static const uptr kMaxAllowedMallocSize = 8UL << 20;
#endif
-
-struct AP64 { // Allocator64 parameters. Deliberately using a short name.
-#if _LP64
- static const uptr kSpaceBeg = 0x600000000000ULL;
- static const uptr kSpaceSize = 0x40000000000ULL; // 4T.
-#else
- static const uptr kSpaceBeg = 0x60000000UL;
- static const uptr kSpaceSize = 0x40000000ULL; // 2G.
-#endif
- static const uptr kMetadataSize = sizeof(ChunkMetadata);
- typedef DefaultSizeClassMap SizeClassMap;
- typedef NoOpMapUnmapCallback MapUnmapCallback;
- static const uptr kFlags = 0;
-};
-
-typedef SizeClassAllocator64<AP64> PrimaryAllocator;
-#endif
-typedef SizeClassAllocatorLocalCache<PrimaryAllocator> AllocatorCache;
typedef LargeMmapAllocator<> SecondaryAllocator;
typedef CombinedAllocator<PrimaryAllocator, AllocatorCache,
SecondaryAllocator> Allocator;
static Allocator allocator;
-static THREADLOCAL AllocatorCache cache;
void InitializeAllocator() {
- allocator.InitLinkerInitialized(common_flags()->allocator_may_return_null);
+ SetAllocatorMayReturnNull(common_flags()->allocator_may_return_null);
+ allocator.InitLinkerInitialized(
+ common_flags()->allocator_release_to_os_interval_ms);
}
void AllocatorThreadFinish() {
- allocator.SwallowCache(&cache);
+ allocator.SwallowCache(GetAllocatorCache());
}
static ChunkMetadata *Metadata(const void *p) {
@@ -109,9 +77,9 @@
size = 1;
if (size > kMaxAllowedMallocSize) {
Report("WARNING: LeakSanitizer failed to allocate %zu bytes\n", size);
- return nullptr;
+ return Allocator::FailureHandler::OnBadRequest();
}
- void *p = allocator.Allocate(&cache, size, alignment, false);
+ void *p = allocator.Allocate(GetAllocatorCache(), size, alignment);
// Do not rely on the allocator to clear the memory (it's slow).
if (cleared && allocator.FromPrimary(p))
memset(p, 0, size);
@@ -121,11 +89,18 @@
return p;
}
+static void *Calloc(uptr nmemb, uptr size, const StackTrace &stack) {
+ if (UNLIKELY(CheckForCallocOverflow(size, nmemb)))
+ return Allocator::FailureHandler::OnBadRequest();
+ size *= nmemb;
+ return Allocate(stack, size, 1, true);
+}
+
void Deallocate(void *p) {
if (&__sanitizer_free_hook) __sanitizer_free_hook(p);
RunFreeHooks(p);
RegisterDeallocation(p);
- allocator.Deallocate(&cache, p);
+ allocator.Deallocate(GetAllocatorCache(), p);
}
void *Reallocate(const StackTrace &stack, void *p, uptr new_size,
@@ -133,17 +108,17 @@
RegisterDeallocation(p);
if (new_size > kMaxAllowedMallocSize) {
Report("WARNING: LeakSanitizer failed to allocate %zu bytes\n", new_size);
- allocator.Deallocate(&cache, p);
- return nullptr;
+ allocator.Deallocate(GetAllocatorCache(), p);
+ return Allocator::FailureHandler::OnBadRequest();
}
- p = allocator.Reallocate(&cache, p, new_size, alignment);
+ p = allocator.Reallocate(GetAllocatorCache(), p, new_size, alignment);
RegisterAllocation(stack, p, new_size);
return p;
}
void GetAllocatorCacheRange(uptr *begin, uptr *end) {
- *begin = (uptr)&cache;
- *end = *begin + sizeof(cache);
+ *begin = (uptr)GetAllocatorCache();
+ *end = *begin + sizeof(AllocatorCache);
}
uptr GetMallocUsableSize(const void *p) {
@@ -152,6 +127,39 @@
return m->requested_size;
}
+void *lsan_memalign(uptr alignment, uptr size, const StackTrace &stack) {
+ if (UNLIKELY(!IsPowerOfTwo(alignment))) {
+ errno = errno_EINVAL;
+ return Allocator::FailureHandler::OnBadRequest();
+ }
+ return SetErrnoOnNull(Allocate(stack, size, alignment, kAlwaysClearMemory));
+}
+
+void *lsan_malloc(uptr size, const StackTrace &stack) {
+ return SetErrnoOnNull(Allocate(stack, size, 1, kAlwaysClearMemory));
+}
+
+void lsan_free(void *p) {
+ Deallocate(p);
+}
+
+void *lsan_realloc(void *p, uptr size, const StackTrace &stack) {
+ return SetErrnoOnNull(Reallocate(stack, p, size, 1));
+}
+
+void *lsan_calloc(uptr nmemb, uptr size, const StackTrace &stack) {
+ return SetErrnoOnNull(Calloc(nmemb, size, stack));
+}
+
+void *lsan_valloc(uptr size, const StackTrace &stack) {
+ return SetErrnoOnNull(
+ Allocate(stack, size, GetPageSizeCached(), kAlwaysClearMemory));
+}
+
+uptr lsan_mz_size(const void *p) {
+ return GetMallocUsableSize(p);
+}
+
///// Interface to the common LSan module. /////
void LockAllocator() {
@@ -267,4 +275,17 @@
uptr __sanitizer_get_allocated_size(const void *p) {
return GetMallocUsableSize(p);
}
+
+#if !SANITIZER_SUPPORTS_WEAK_HOOKS
+// Provide default (no-op) implementation of malloc hooks.
+SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE
+void __sanitizer_malloc_hook(void *ptr, uptr size) {
+ (void)ptr;
+ (void)size;
+}
+SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE
+void __sanitizer_free_hook(void *ptr) {
+ (void)ptr;
+}
+#endif
} // extern "C"
diff -r f3bccc7618b2 -r 9245dd815c05 external/gpl3/gcc/dist/libsanitizer/sanitizer_common/sanitizer_internal_defs.h
--- a/external/gpl3/gcc/dist/libsanitizer/sanitizer_common/sanitizer_internal_defs.h Tue Oct 01 21:13:30 2019 +0000
+++ b/external/gpl3/gcc/dist/libsanitizer/sanitizer_common/sanitizer_internal_defs.h Tue Oct 01 21:13:43 2019 +0000
@@ -19,8 +19,11 @@
// Only use SANITIZER_*ATTRIBUTE* before the function return type!
#if SANITIZER_WINDOWS
+#if SANITIZER_IMPORT_INTERFACE
+# define SANITIZER_INTERFACE_ATTRIBUTE __declspec(dllimport)
+#else
# define SANITIZER_INTERFACE_ATTRIBUTE __declspec(dllexport)
-// FIXME find out what we need on Windows, if anything.
+#endif
# define SANITIZER_WEAK_ATTRIBUTE
#elif SANITIZER_GO
# define SANITIZER_INTERFACE_ATTRIBUTE
@@ -30,11 +33,62 @@
# define SANITIZER_WEAK_ATTRIBUTE __attribute__((weak))
#endif
-#if (SANITIZER_LINUX || SANITIZER_WINDOWS || SANITIZER_NETBSD) && !SANITIZER_GO
+// TLS is handled differently on different platforms
+#if SANITIZER_LINUX
+# define SANITIZER_TLS_INITIAL_EXEC_ATTRIBUTE \
+ __attribute__((tls_model("initial-exec"))) thread_local
+#else
+# define SANITIZER_TLS_INITIAL_EXEC_ATTRIBUTE
+#endif
+
+//--------------------------- WEAK FUNCTIONS ---------------------------------//
+// When working with weak functions, to simplify the code and make it more
+// portable, when possible define a default implementation using this macro:
+//
+// SANITIZER_INTERFACE_WEAK_DEF(<return_type>, <name>, <parameter list>)
+//
+// For example:
+// SANITIZER_INTERFACE_WEAK_DEF(bool, compare, int a, int b) { return a > b; }
+//
+#if SANITIZER_WINDOWS
+#include "sanitizer_win_defs.h"
+# define SANITIZER_INTERFACE_WEAK_DEF(ReturnType, Name, ...) \
+ WIN_WEAK_EXPORT_DEF(ReturnType, Name, __VA_ARGS__)
+#else
+# define SANITIZER_INTERFACE_WEAK_DEF(ReturnType, Name, ...) \
+ extern "C" SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE \
+ ReturnType Name(__VA_ARGS__)
+#endif
+
+// SANITIZER_SUPPORTS_WEAK_HOOKS means that we support real weak functions that
+// will evaluate to a null pointer when not defined.
+#ifndef SANITIZER_SUPPORTS_WEAK_HOOKS
+#if (SANITIZER_LINUX || SANITIZER_NETBSD) && !SANITIZER_GO
+# define SANITIZER_SUPPORTS_WEAK_HOOKS 1
+// Before Xcode 4.5, the Darwin linker doesn't reliably support undefined
+// weak symbols. Mac OS X 10.9/Darwin 13 is the first release only supported
+// by Xcode >= 4.5.
+#elif SANITIZER_MAC && \
+ __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1090 && !SANITIZER_GO
# define SANITIZER_SUPPORTS_WEAK_HOOKS 1
#else
# define SANITIZER_SUPPORTS_WEAK_HOOKS 0
#endif
+#endif // SANITIZER_SUPPORTS_WEAK_HOOKS
+// For some weak hooks that will be called very often and we want to avoid the
+// overhead of executing the default implementation when it is not necessary,
+// we can use the flag SANITIZER_SUPPORTS_WEAK_HOOKS to only define the default
+// implementation for platforms that doesn't support weak symbols. For example:
+//
+// #if !SANITIZER_SUPPORT_WEAK_HOOKS
+// SANITIZER_INTERFACE_WEAK_DEF(bool, compare_hook, int a, int b) {
+// return a > b;
+// }
+// #endif
+//
+// And then use it as: if (compare_hook) compare_hook(a, b);
+//----------------------------------------------------------------------------//
+
// We can use .preinit_array section on Linux to call sanitizer initialization
// functions very early in the process startup (unless PIC macro is defined).
@@ -94,12 +148,8 @@
#endif
typedef int pid_t;
-// WARNING: OFF_T may be different from OS type off_t, depending on the value of
Home |
Main Index |
Thread Index |
Old Index