5d3805fca3
* ubsan.c (ubsan_expand_null_ifn): Use _v1 suffixed type mismatch
builtins, store max (log2 (align), 0) into uchar field instead of
align into uptr field.
(ubsan_expand_objsize_ifn): Use _v1 suffixed type mismatch builtins,
store uchar 0 field instead of uptr 0 field.
(instrument_nonnull_return): Use _v1 suffixed nonnull return builtin,
instead of passing one address of struct with 2 locations pass
two addresses of structs with 1 location each.
* sanitizer.def (BUILT_IN_UBSAN_HANDLE_TYPE_MISMATCH,
BUILT_IN_UBSAN_HANDLE_TYPE_MISMATCH_ABORT,
BUILT_IN_UBSAN_HANDLE_NONNULL_RETURN,
BUILT_IN_UBSAN_HANDLE_NONNULL_RETURN_ABORT): Removed.
(BUILT_IN_UBSAN_HANDLE_TYPE_MISMATCH_V1,
BUILT_IN_UBSAN_HANDLE_TYPE_MISMATCH_V1_ABORT,
BUILT_IN_UBSAN_HANDLE_NONNULL_RETURN_V1,
BUILT_IN_UBSAN_HANDLE_NONNULL_RETURN_V1_ABORT): New builtins.
* c-c++-common/ubsan/float-cast-overflow-1.c: Drop value keyword
from expected output regexps.
* c-c++-common/ubsan/float-cast-overflow-2.c: Likewise.
* c-c++-common/ubsan/float-cast-overflow-3.c: Likewise.
* c-c++-common/ubsan/float-cast-overflow-4.c: Likewise.
* c-c++-common/ubsan/float-cast-overflow-5.c: Likewise.
* c-c++-common/ubsan/float-cast-overflow-6.c: Likewise.
* c-c++-common/ubsan/float-cast-overflow-8.c: Likewise.
* c-c++-common/ubsan/float-cast-overflow-9.c: Likewise.
* c-c++-common/ubsan/float-cast-overflow-10.c: Likewise.
* g++.dg/ubsan/float-cast-overflow-bf.C: Likewise.
* gcc.dg/ubsan/float-cast-overflow-bf.c: Likewise.
* g++.dg/asan/default-options-1.C (__asan_default_options): Add
used attribute.
* g++.dg/asan/asan_test.C: Run with ASAN_OPTIONS=handle_segv=2
in the environment.
* All source files: Merge from upstream 315899.
* asan/Makefile.am (nodist_saninclude_HEADERS): Add
include/sanitizer/tsan_interface.h.
* asan/libtool-version: Bump the libasan SONAME.
* lsan/Makefile.am (sanitizer_lsan_files): Add lsan_common_mac.cc.
(lsan_files): Add lsan_linux.cc, lsan_mac.cc and lsan_malloc_mac.cc.
* sanitizer_common/Makefile.am (sanitizer_common_files): Add
sancov_flags.cc, sanitizer_allocator_checks.cc,
sanitizer_coverage_libcdep_new.cc, sanitizer_errno.cc,
sanitizer_file.cc, sanitizer_mac_libcdep.cc and
sanitizer_stoptheworld_mac.cc. Remove sanitizer_coverage_libcdep.cc
and sanitizer_coverage_mapping_libcdep.cc.
* tsan/Makefile.am (tsan_files): Add tsan_external.cc.
* ubsan/Makefile.am (DEFS): Add -DUBSAN_CAN_USE_CXXABI=1.
(ubsan_files): Add ubsan_init_standalone.cc and
ubsan_signals_standalone.cc.
* ubsan/libtool-version: Bump the libubsan SONAME.
* asan/Makefile.in: Regenerate.
* lsan/Makefile.in: Regenerate.
* sanitizer_common/Makefile.in: Regenerate.
* tsan/Makefile.in: Regenerate.
* ubsan/Makefile.in: Regenerate.
From-SVN: r253887
346 lines
13 KiB
C++
346 lines
13 KiB
C++
//===-- asan_mapping.h ------------------------------------------*- C++ -*-===//
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file is a part of AddressSanitizer, an address sanity checker.
|
|
//
|
|
// Defines ASan memory mapping.
|
|
//===----------------------------------------------------------------------===//
|
|
#ifndef ASAN_MAPPING_H
|
|
#define ASAN_MAPPING_H
|
|
|
|
#include "asan_internal.h"
|
|
|
|
// The full explanation of the memory mapping could be found here:
|
|
// https://github.com/google/sanitizers/wiki/AddressSanitizerAlgorithm
|
|
//
|
|
// Typical shadow mapping on Linux/x86_64 with SHADOW_OFFSET == 0x00007fff8000:
|
|
// || `[0x10007fff8000, 0x7fffffffffff]` || HighMem ||
|
|
// || `[0x02008fff7000, 0x10007fff7fff]` || HighShadow ||
|
|
// || `[0x00008fff7000, 0x02008fff6fff]` || ShadowGap ||
|
|
// || `[0x00007fff8000, 0x00008fff6fff]` || LowShadow ||
|
|
// || `[0x000000000000, 0x00007fff7fff]` || LowMem ||
|
|
//
|
|
// When SHADOW_OFFSET is zero (-pie):
|
|
// || `[0x100000000000, 0x7fffffffffff]` || HighMem ||
|
|
// || `[0x020000000000, 0x0fffffffffff]` || HighShadow ||
|
|
// || `[0x000000040000, 0x01ffffffffff]` || ShadowGap ||
|
|
//
|
|
// Special case when something is already mapped between
|
|
// 0x003000000000 and 0x005000000000 (e.g. when prelink is installed):
|
|
// || `[0x10007fff8000, 0x7fffffffffff]` || HighMem ||
|
|
// || `[0x02008fff7000, 0x10007fff7fff]` || HighShadow ||
|
|
// || `[0x005000000000, 0x02008fff6fff]` || ShadowGap3 ||
|
|
// || `[0x003000000000, 0x004fffffffff]` || MidMem ||
|
|
// || `[0x000a7fff8000, 0x002fffffffff]` || ShadowGap2 ||
|
|
// || `[0x00067fff8000, 0x000a7fff7fff]` || MidShadow ||
|
|
// || `[0x00008fff7000, 0x00067fff7fff]` || ShadowGap ||
|
|
// || `[0x00007fff8000, 0x00008fff6fff]` || LowShadow ||
|
|
// || `[0x000000000000, 0x00007fff7fff]` || LowMem ||
|
|
//
|
|
// Default Linux/i386 mapping on x86_64 machine:
|
|
// || `[0x40000000, 0xffffffff]` || HighMem ||
|
|
// || `[0x28000000, 0x3fffffff]` || HighShadow ||
|
|
// || `[0x24000000, 0x27ffffff]` || ShadowGap ||
|
|
// || `[0x20000000, 0x23ffffff]` || LowShadow ||
|
|
// || `[0x00000000, 0x1fffffff]` || LowMem ||
|
|
//
|
|
// Default Linux/i386 mapping on i386 machine
|
|
// (addresses starting with 0xc0000000 are reserved
|
|
// for kernel and thus not sanitized):
|
|
// || `[0x38000000, 0xbfffffff]` || HighMem ||
|
|
// || `[0x27000000, 0x37ffffff]` || HighShadow ||
|
|
// || `[0x24000000, 0x26ffffff]` || ShadowGap ||
|
|
// || `[0x20000000, 0x23ffffff]` || LowShadow ||
|
|
// || `[0x00000000, 0x1fffffff]` || LowMem ||
|
|
//
|
|
// Default Linux/MIPS32 mapping:
|
|
// || `[0x2aaa0000, 0xffffffff]` || HighMem ||
|
|
// || `[0x0fff4000, 0x2aa9ffff]` || HighShadow ||
|
|
// || `[0x0bff4000, 0x0fff3fff]` || ShadowGap ||
|
|
// || `[0x0aaa0000, 0x0bff3fff]` || LowShadow ||
|
|
// || `[0x00000000, 0x0aa9ffff]` || LowMem ||
|
|
//
|
|
// Default Linux/MIPS64 mapping:
|
|
// || `[0x4000000000, 0xffffffffff]` || HighMem ||
|
|
// || `[0x2800000000, 0x3fffffffff]` || HighShadow ||
|
|
// || `[0x2400000000, 0x27ffffffff]` || ShadowGap ||
|
|
// || `[0x2000000000, 0x23ffffffff]` || LowShadow ||
|
|
// || `[0x0000000000, 0x1fffffffff]` || LowMem ||
|
|
//
|
|
// Default Linux/AArch64 (39-bit VMA) mapping:
|
|
// || `[0x2000000000, 0x7fffffffff]` || highmem ||
|
|
// || `[0x1400000000, 0x1fffffffff]` || highshadow ||
|
|
// || `[0x1200000000, 0x13ffffffff]` || shadowgap ||
|
|
// || `[0x1000000000, 0x11ffffffff]` || lowshadow ||
|
|
// || `[0x0000000000, 0x0fffffffff]` || lowmem ||
|
|
//
|
|
// Default Linux/AArch64 (42-bit VMA) mapping:
|
|
// || `[0x10000000000, 0x3ffffffffff]` || highmem ||
|
|
// || `[0x0a000000000, 0x0ffffffffff]` || highshadow ||
|
|
// || `[0x09000000000, 0x09fffffffff]` || shadowgap ||
|
|
// || `[0x08000000000, 0x08fffffffff]` || lowshadow ||
|
|
// || `[0x00000000000, 0x07fffffffff]` || lowmem ||
|
|
//
|
|
// Default Linux/S390 mapping:
|
|
// || `[0x30000000, 0x7fffffff]` || HighMem ||
|
|
// || `[0x26000000, 0x2fffffff]` || HighShadow ||
|
|
// || `[0x24000000, 0x25ffffff]` || ShadowGap ||
|
|
// || `[0x20000000, 0x23ffffff]` || LowShadow ||
|
|
// || `[0x00000000, 0x1fffffff]` || LowMem ||
|
|
//
|
|
// Default Linux/SystemZ mapping:
|
|
// || `[0x14000000000000, 0x1fffffffffffff]` || HighMem ||
|
|
// || `[0x12800000000000, 0x13ffffffffffff]` || HighShadow ||
|
|
// || `[0x12000000000000, 0x127fffffffffff]` || ShadowGap ||
|
|
// || `[0x10000000000000, 0x11ffffffffffff]` || LowShadow ||
|
|
// || `[0x00000000000000, 0x0fffffffffffff]` || LowMem ||
|
|
//
|
|
// Shadow mapping on FreeBSD/x86-64 with SHADOW_OFFSET == 0x400000000000:
|
|
// || `[0x500000000000, 0x7fffffffffff]` || HighMem ||
|
|
// || `[0x4a0000000000, 0x4fffffffffff]` || HighShadow ||
|
|
// || `[0x480000000000, 0x49ffffffffff]` || ShadowGap ||
|
|
// || `[0x400000000000, 0x47ffffffffff]` || LowShadow ||
|
|
// || `[0x000000000000, 0x3fffffffffff]` || LowMem ||
|
|
//
|
|
// Shadow mapping on FreeBSD/i386 with SHADOW_OFFSET == 0x40000000:
|
|
// || `[0x60000000, 0xffffffff]` || HighMem ||
|
|
// || `[0x4c000000, 0x5fffffff]` || HighShadow ||
|
|
// || `[0x48000000, 0x4bffffff]` || ShadowGap ||
|
|
// || `[0x40000000, 0x47ffffff]` || LowShadow ||
|
|
// || `[0x00000000, 0x3fffffff]` || LowMem ||
|
|
//
|
|
// Shadow mapping on NetBSD/x86-64 with SHADOW_OFFSET == 0x400000000000:
|
|
// || `[0x4feffffffe01, 0x7f7ffffff000]` || HighMem ||
|
|
// || `[0x49fdffffffc0, 0x4feffffffe00]` || HighShadow ||
|
|
// || `[0x480000000000, 0x49fdffffffbf]` || ShadowGap ||
|
|
// || `[0x400000000000, 0x47ffffffffff]` || LowShadow ||
|
|
// || `[0x000000000000, 0x3fffffffffff]` || LowMem ||
|
|
//
|
|
// Default Windows/i386 mapping:
|
|
// (the exact location of HighShadow/HighMem may vary depending
|
|
// on WoW64, /LARGEADDRESSAWARE, etc).
|
|
// || `[0x50000000, 0xffffffff]` || HighMem ||
|
|
// || `[0x3a000000, 0x4fffffff]` || HighShadow ||
|
|
// || `[0x36000000, 0x39ffffff]` || ShadowGap ||
|
|
// || `[0x30000000, 0x35ffffff]` || LowShadow ||
|
|
// || `[0x00000000, 0x2fffffff]` || LowMem ||
|
|
|
|
static const u64 kDefaultShadowScale = 3;
|
|
static const u64 kDefaultShadowSentinel = ~(uptr)0;
|
|
static const u64 kDefaultShadowOffset32 = 1ULL << 29; // 0x20000000
|
|
static const u64 kDefaultShadowOffset64 = 1ULL << 44;
|
|
static const u64 kDefaultShort64bitShadowOffset = 0x7FFF8000; // < 2G.
|
|
static const u64 kIosShadowOffset32 = 1ULL << 30; // 0x40000000
|
|
static const u64 kIosShadowOffset64 = 0x120200000;
|
|
static const u64 kIosSimShadowOffset32 = 1ULL << 30;
|
|
static const u64 kIosSimShadowOffset64 = kDefaultShadowOffset64;
|
|
static const u64 kAArch64_ShadowOffset64 = 1ULL << 36;
|
|
static const u64 kMIPS32_ShadowOffset32 = 0x0aaa0000;
|
|
static const u64 kMIPS64_ShadowOffset64 = 1ULL << 37;
|
|
static const u64 kPPC64_ShadowOffset64 = 1ULL << 41;
|
|
static const u64 kSystemZ_ShadowOffset64 = 1ULL << 52;
|
|
static const u64 kFreeBSD_ShadowOffset32 = 1ULL << 30; // 0x40000000
|
|
static const u64 kFreeBSD_ShadowOffset64 = 1ULL << 46; // 0x400000000000
|
|
static const u64 kNetBSD_ShadowOffset64 = 1ULL << 46; // 0x400000000000
|
|
static const u64 kWindowsShadowOffset32 = 3ULL << 28; // 0x30000000
|
|
|
|
#define SHADOW_SCALE kDefaultShadowScale
|
|
|
|
#if SANITIZER_FUCHSIA
|
|
# define SHADOW_OFFSET (0)
|
|
#elif SANITIZER_WORDSIZE == 32
|
|
# if SANITIZER_ANDROID
|
|
# define SHADOW_OFFSET (0)
|
|
# elif defined(__mips__)
|
|
# define SHADOW_OFFSET kMIPS32_ShadowOffset32
|
|
# elif SANITIZER_FREEBSD
|
|
# define SHADOW_OFFSET kFreeBSD_ShadowOffset32
|
|
# elif SANITIZER_WINDOWS
|
|
# define SHADOW_OFFSET kWindowsShadowOffset32
|
|
# elif SANITIZER_IOS
|
|
# if SANITIZER_IOSSIM
|
|
# define SHADOW_OFFSET kIosSimShadowOffset32
|
|
# else
|
|
# define SHADOW_OFFSET kIosShadowOffset32
|
|
# endif
|
|
# else
|
|
# define SHADOW_OFFSET kDefaultShadowOffset32
|
|
# endif
|
|
#else
|
|
# if SANITIZER_IOS
|
|
# if SANITIZER_IOSSIM
|
|
# define SHADOW_OFFSET kIosSimShadowOffset64
|
|
# else
|
|
# define SHADOW_OFFSET __asan_shadow_memory_dynamic_address
|
|
# endif
|
|
# elif defined(__aarch64__)
|
|
# define SHADOW_OFFSET kAArch64_ShadowOffset64
|
|
# elif defined(__powerpc64__)
|
|
# define SHADOW_OFFSET kPPC64_ShadowOffset64
|
|
# elif defined(__s390x__)
|
|
# define SHADOW_OFFSET kSystemZ_ShadowOffset64
|
|
# elif SANITIZER_FREEBSD
|
|
# define SHADOW_OFFSET kFreeBSD_ShadowOffset64
|
|
# elif SANITIZER_NETBSD
|
|
# define SHADOW_OFFSET kNetBSD_ShadowOffset64
|
|
# elif SANITIZER_MAC
|
|
# define SHADOW_OFFSET kDefaultShadowOffset64
|
|
# elif defined(__mips64)
|
|
# define SHADOW_OFFSET kMIPS64_ShadowOffset64
|
|
# elif SANITIZER_WINDOWS64
|
|
# define SHADOW_OFFSET __asan_shadow_memory_dynamic_address
|
|
# else
|
|
# define SHADOW_OFFSET kDefaultShort64bitShadowOffset
|
|
# endif
|
|
#endif
|
|
|
|
#define SHADOW_GRANULARITY (1ULL << SHADOW_SCALE)
|
|
#define MEM_TO_SHADOW(mem) (((mem) >> SHADOW_SCALE) + (SHADOW_OFFSET))
|
|
|
|
#define kLowMemBeg 0
|
|
#define kLowMemEnd (SHADOW_OFFSET ? SHADOW_OFFSET - 1 : 0)
|
|
|
|
#define kLowShadowBeg SHADOW_OFFSET
|
|
#define kLowShadowEnd MEM_TO_SHADOW(kLowMemEnd)
|
|
|
|
#define kHighMemBeg (MEM_TO_SHADOW(kHighMemEnd) + 1)
|
|
|
|
#define kHighShadowBeg MEM_TO_SHADOW(kHighMemBeg)
|
|
#define kHighShadowEnd MEM_TO_SHADOW(kHighMemEnd)
|
|
|
|
# define kMidShadowBeg MEM_TO_SHADOW(kMidMemBeg)
|
|
# define kMidShadowEnd MEM_TO_SHADOW(kMidMemEnd)
|
|
|
|
// With the zero shadow base we can not actually map pages starting from 0.
|
|
// This constant is somewhat arbitrary.
|
|
#define kZeroBaseShadowStart 0
|
|
#define kZeroBaseMaxShadowStart (1 << 18)
|
|
|
|
#define kShadowGapBeg (kLowShadowEnd ? kLowShadowEnd + 1 \
|
|
: kZeroBaseShadowStart)
|
|
#define kShadowGapEnd ((kMidMemBeg ? kMidShadowBeg : kHighShadowBeg) - 1)
|
|
|
|
#define kShadowGap2Beg (kMidMemBeg ? kMidShadowEnd + 1 : 0)
|
|
#define kShadowGap2End (kMidMemBeg ? kMidMemBeg - 1 : 0)
|
|
|
|
#define kShadowGap3Beg (kMidMemBeg ? kMidMemEnd + 1 : 0)
|
|
#define kShadowGap3End (kMidMemBeg ? kHighShadowBeg - 1 : 0)
|
|
|
|
#define DO_ASAN_MAPPING_PROFILE 0 // Set to 1 to profile the functions below.
|
|
|
|
#if DO_ASAN_MAPPING_PROFILE
|
|
# define PROFILE_ASAN_MAPPING() AsanMappingProfile[__LINE__]++;
|
|
#else
|
|
# define PROFILE_ASAN_MAPPING()
|
|
#endif
|
|
|
|
// If 1, all shadow boundaries are constants.
|
|
// Don't set to 1 other than for testing.
|
|
#define ASAN_FIXED_MAPPING 0
|
|
|
|
namespace __asan {
|
|
|
|
extern uptr AsanMappingProfile[];
|
|
|
|
#if ASAN_FIXED_MAPPING
|
|
// Fixed mapping for 64-bit Linux. Mostly used for performance comparison
|
|
// with non-fixed mapping. As of r175253 (Feb 2013) the performance
|
|
// difference between fixed and non-fixed mapping is below the noise level.
|
|
static uptr kHighMemEnd = 0x7fffffffffffULL;
|
|
static uptr kMidMemBeg = 0x3000000000ULL;
|
|
static uptr kMidMemEnd = 0x4fffffffffULL;
|
|
#else
|
|
extern uptr kHighMemEnd, kMidMemBeg, kMidMemEnd; // Initialized in __asan_init.
|
|
#endif
|
|
|
|
static inline bool AddrIsInLowMem(uptr a) {
|
|
PROFILE_ASAN_MAPPING();
|
|
return a < kLowMemEnd;
|
|
}
|
|
|
|
static inline bool AddrIsInLowShadow(uptr a) {
|
|
PROFILE_ASAN_MAPPING();
|
|
return a >= kLowShadowBeg && a <= kLowShadowEnd;
|
|
}
|
|
|
|
static inline bool AddrIsInHighMem(uptr a) {
|
|
PROFILE_ASAN_MAPPING();
|
|
return a >= kHighMemBeg && a <= kHighMemEnd;
|
|
}
|
|
|
|
static inline bool AddrIsInMidMem(uptr a) {
|
|
PROFILE_ASAN_MAPPING();
|
|
return kMidMemBeg && a >= kMidMemBeg && a <= kMidMemEnd;
|
|
}
|
|
|
|
static inline bool AddrIsInShadowGap(uptr a) {
|
|
PROFILE_ASAN_MAPPING();
|
|
if (kMidMemBeg) {
|
|
if (a <= kShadowGapEnd)
|
|
return SHADOW_OFFSET == 0 || a >= kShadowGapBeg;
|
|
return (a >= kShadowGap2Beg && a <= kShadowGap2End) ||
|
|
(a >= kShadowGap3Beg && a <= kShadowGap3End);
|
|
}
|
|
// In zero-based shadow mode we treat addresses near zero as addresses
|
|
// in shadow gap as well.
|
|
if (SHADOW_OFFSET == 0)
|
|
return a <= kShadowGapEnd;
|
|
return a >= kShadowGapBeg && a <= kShadowGapEnd;
|
|
}
|
|
|
|
static inline bool AddrIsInMem(uptr a) {
|
|
PROFILE_ASAN_MAPPING();
|
|
return AddrIsInLowMem(a) || AddrIsInMidMem(a) || AddrIsInHighMem(a) ||
|
|
(flags()->protect_shadow_gap == 0 && AddrIsInShadowGap(a));
|
|
}
|
|
|
|
static inline uptr MemToShadow(uptr p) {
|
|
PROFILE_ASAN_MAPPING();
|
|
CHECK(AddrIsInMem(p));
|
|
return MEM_TO_SHADOW(p);
|
|
}
|
|
|
|
static inline bool AddrIsInHighShadow(uptr a) {
|
|
PROFILE_ASAN_MAPPING();
|
|
return a >= kHighShadowBeg && a <= kHighMemEnd;
|
|
}
|
|
|
|
static inline bool AddrIsInMidShadow(uptr a) {
|
|
PROFILE_ASAN_MAPPING();
|
|
return kMidMemBeg && a >= kMidShadowBeg && a <= kMidMemEnd;
|
|
}
|
|
|
|
static inline bool AddrIsInShadow(uptr a) {
|
|
PROFILE_ASAN_MAPPING();
|
|
return AddrIsInLowShadow(a) || AddrIsInMidShadow(a) || AddrIsInHighShadow(a);
|
|
}
|
|
|
|
static inline bool AddrIsAlignedByGranularity(uptr a) {
|
|
PROFILE_ASAN_MAPPING();
|
|
return (a & (SHADOW_GRANULARITY - 1)) == 0;
|
|
}
|
|
|
|
static inline bool AddressIsPoisoned(uptr a) {
|
|
PROFILE_ASAN_MAPPING();
|
|
const uptr kAccessSize = 1;
|
|
u8 *shadow_address = (u8*)MEM_TO_SHADOW(a);
|
|
s8 shadow_value = *shadow_address;
|
|
if (shadow_value) {
|
|
u8 last_accessed_byte = (a & (SHADOW_GRANULARITY - 1))
|
|
+ kAccessSize - 1;
|
|
return (last_accessed_byte >= shadow_value);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// Must be after all calls to PROFILE_ASAN_MAPPING().
|
|
static const uptr kAsanMappingProfileSize = __LINE__;
|
|
|
|
} // namespace __asan
|
|
|
|
#endif // ASAN_MAPPING_H
|