2012-06-04 21:50:10 +08:00
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//===-- asan_rtl.cc -------------------------------------------------------===//
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2011-11-30 09:07:02 +08:00
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is a part of AddressSanitizer, an address sanity checker.
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//
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// Main file of the ASan run-time library.
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//===----------------------------------------------------------------------===//
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2015-10-01 08:22:21 +08:00
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2014-01-16 20:31:50 +08:00
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#include "asan_activation.h"
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2011-11-30 09:07:02 +08:00
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#include "asan_allocator.h"
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#include "asan_interceptors.h"
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2013-09-18 18:35:12 +08:00
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#include "asan_interface_internal.h"
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2011-11-30 09:07:02 +08:00
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#include "asan_internal.h"
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#include "asan_mapping.h"
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2013-03-28 23:42:43 +08:00
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#include "asan_poisoning.h"
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2012-08-09 17:06:52 +08:00
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#include "asan_report.h"
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2011-11-30 09:07:02 +08:00
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#include "asan_stack.h"
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#include "asan_stats.h"
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2014-12-06 04:26:09 +08:00
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#include "asan_suppressions.h"
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2011-11-30 09:07:02 +08:00
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#include "asan_thread.h"
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2012-06-30 00:58:33 +08:00
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#include "sanitizer_common/sanitizer_atomic.h"
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2012-07-09 22:36:04 +08:00
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#include "sanitizer_common/sanitizer_flags.h"
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2012-06-05 15:25:47 +08:00
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#include "sanitizer_common/sanitizer_libc.h"
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2012-08-23 15:32:06 +08:00
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#include "sanitizer_common/sanitizer_symbolizer.h"
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2013-05-21 22:15:35 +08:00
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#include "lsan/lsan_common.h"
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2015-04-02 06:42:36 +08:00
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#include "ubsan/ubsan_init.h"
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#include "ubsan/ubsan_platform.h"
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2011-11-30 09:07:02 +08:00
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2013-09-18 18:35:12 +08:00
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int __asan_option_detect_stack_use_after_return; // Global interface symbol.
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2014-04-16 21:52:28 +08:00
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uptr *__asan_test_only_reported_buggy_pointer; // Used only for testing asan.
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2013-09-18 18:35:12 +08:00
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2012-09-11 17:44:48 +08:00
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namespace __asan {
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2012-06-06 15:02:44 +08:00
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[asan] make asan work with 7fff8000 offset and prelink
When prelink is installed in the system, prelink-ed
libraries map between 0x003000000000 and 0x004000000000 thus occupying the shadow Gap,
so we need so split the address space even further, like this:
|| [0x10007fff8000, 0x7fffffffffff] || HighMem ||
|| [0x02008fff7000, 0x10007fff7fff] || HighShadow ||
|| [0x004000000000, 0x02008fff6fff] || ShadowGap3 ||
|| [0x003000000000, 0x003fffffffff] || MidMem ||
|| [0x00087fff8000, 0x002fffffffff] || ShadowGap2 ||
|| [0x00067fff8000, 0x00087fff7fff] || MidShadow ||
|| [0x00008fff7000, 0x00067fff7fff] || ShadowGap ||
|| [0x00007fff8000, 0x00008fff6fff] || LowShadow ||
|| [0x000000000000, 0x00007fff7fff] || LowMem ||
Do it only if necessary.
Also added a bit of profiling code to make sure that the
mapping code is efficient.
Added a lit test to simulate prelink-ed libraries.
Unfortunately, this test does not work with binutils-gold linker.
If gold is the default linker the test silently passes.
Also replaced
__has_feature(address_sanitizer)
with
__has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
in two places.
Patch partially by Jakub Jelinek.
llvm-svn: 175263
2013-02-15 20:00:24 +08:00
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uptr AsanMappingProfile[kAsanMappingProfileSize];
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2012-09-11 17:44:48 +08:00
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static void AsanDie() {
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2012-06-30 00:58:33 +08:00
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static atomic_uint32_t num_calls;
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if (atomic_fetch_add(&num_calls, 1, memory_order_relaxed) != 0) {
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2012-06-06 15:02:44 +08:00
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// Don't die twice - run a busy loop.
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while (1) { }
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}
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2012-07-09 22:36:04 +08:00
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if (flags()->sleep_before_dying) {
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2012-08-06 21:00:21 +08:00
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Report("Sleeping for %d second(s)\n", flags()->sleep_before_dying);
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2012-07-09 22:36:04 +08:00
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SleepForSeconds(flags()->sleep_before_dying);
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2012-06-06 15:02:44 +08:00
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}
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[asan] make asan work with 7fff8000 offset and prelink
When prelink is installed in the system, prelink-ed
libraries map between 0x003000000000 and 0x004000000000 thus occupying the shadow Gap,
so we need so split the address space even further, like this:
|| [0x10007fff8000, 0x7fffffffffff] || HighMem ||
|| [0x02008fff7000, 0x10007fff7fff] || HighShadow ||
|| [0x004000000000, 0x02008fff6fff] || ShadowGap3 ||
|| [0x003000000000, 0x003fffffffff] || MidMem ||
|| [0x00087fff8000, 0x002fffffffff] || ShadowGap2 ||
|| [0x00067fff8000, 0x00087fff7fff] || MidShadow ||
|| [0x00008fff7000, 0x00067fff7fff] || ShadowGap ||
|| [0x00007fff8000, 0x00008fff6fff] || LowShadow ||
|| [0x000000000000, 0x00007fff7fff] || LowMem ||
Do it only if necessary.
Also added a bit of profiling code to make sure that the
mapping code is efficient.
Added a lit test to simulate prelink-ed libraries.
Unfortunately, this test does not work with binutils-gold linker.
If gold is the default linker the test silently passes.
Also replaced
__has_feature(address_sanitizer)
with
__has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
in two places.
Patch partially by Jakub Jelinek.
llvm-svn: 175263
2013-02-15 20:00:24 +08:00
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if (flags()->unmap_shadow_on_exit) {
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if (kMidMemBeg) {
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UnmapOrDie((void*)kLowShadowBeg, kMidMemBeg - kLowShadowBeg);
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UnmapOrDie((void*)kMidMemEnd, kHighShadowEnd - kMidMemEnd);
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} else {
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UnmapOrDie((void*)kLowShadowBeg, kHighShadowEnd - kLowShadowBeg);
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}
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}
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2012-06-06 15:02:44 +08:00
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}
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2012-09-11 17:44:48 +08:00
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static void AsanCheckFailed(const char *file, int line, const char *cond,
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u64 v1, u64 v2) {
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2013-12-05 20:04:51 +08:00
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Report("AddressSanitizer CHECK failed: %s:%d \"%s\" (0x%zx, 0x%zx)\n", file,
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line, cond, (uptr)v1, (uptr)v2);
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2012-09-07 23:50:19 +08:00
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// FIXME: check for infinite recursion without a thread-local counter here.
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2014-10-14 17:36:24 +08:00
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PRINT_CURRENT_STACK_CHECK();
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2012-12-13 19:09:26 +08:00
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Die();
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2012-06-06 23:22:20 +08:00
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}
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2011-11-30 09:07:02 +08:00
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// -------------------------- Globals --------------------- {{{1
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int asan_inited;
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bool asan_init_is_running;
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[asan] make asan work with 7fff8000 offset and prelink
When prelink is installed in the system, prelink-ed
libraries map between 0x003000000000 and 0x004000000000 thus occupying the shadow Gap,
so we need so split the address space even further, like this:
|| [0x10007fff8000, 0x7fffffffffff] || HighMem ||
|| [0x02008fff7000, 0x10007fff7fff] || HighShadow ||
|| [0x004000000000, 0x02008fff6fff] || ShadowGap3 ||
|| [0x003000000000, 0x003fffffffff] || MidMem ||
|| [0x00087fff8000, 0x002fffffffff] || ShadowGap2 ||
|| [0x00067fff8000, 0x00087fff7fff] || MidShadow ||
|| [0x00008fff7000, 0x00067fff7fff] || ShadowGap ||
|| [0x00007fff8000, 0x00008fff6fff] || LowShadow ||
|| [0x000000000000, 0x00007fff7fff] || LowMem ||
Do it only if necessary.
Also added a bit of profiling code to make sure that the
mapping code is efficient.
Added a lit test to simulate prelink-ed libraries.
Unfortunately, this test does not work with binutils-gold linker.
If gold is the default linker the test silently passes.
Also replaced
__has_feature(address_sanitizer)
with
__has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
in two places.
Patch partially by Jakub Jelinek.
llvm-svn: 175263
2013-02-15 20:00:24 +08:00
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#if !ASAN_FIXED_MAPPING
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uptr kHighMemEnd, kMidMemBeg, kMidMemEnd;
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#endif
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2011-11-30 09:07:02 +08:00
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// -------------------------- Misc ---------------- {{{1
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void ShowStatsAndAbort() {
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__asan_print_accumulated_stats();
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2012-06-06 15:02:44 +08:00
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Die();
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2011-11-30 09:07:02 +08:00
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}
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// ---------------------- mmap -------------------- {{{1
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2011-12-29 07:28:54 +08:00
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// Reserve memory range [beg, end].
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2015-01-21 10:05:31 +08:00
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// We need to use inclusive range because end+1 may not be representable.
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2015-05-30 06:31:28 +08:00
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void ReserveShadowMemoryRange(uptr beg, uptr end, const char *name) {
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2016-02-19 01:58:22 +08:00
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CHECK_EQ((beg % GetMmapGranularity()), 0);
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CHECK_EQ(((end + 1) % GetMmapGranularity()), 0);
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2012-05-31 22:35:53 +08:00
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uptr size = end - beg + 1;
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2014-04-14 22:51:01 +08:00
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DecreaseTotalMmap(size); // Don't count the shadow against mmap_limit_mb.
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2015-05-30 06:31:28 +08:00
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void *res = MmapFixedNoReserve(beg, size, name);
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2012-09-07 23:34:40 +08:00
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if (res != (void*)beg) {
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Report("ReserveShadowMemoryRange failed while trying to map 0x%zx bytes. "
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"Perhaps you're using ulimit -v\n", size);
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Abort();
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}
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2015-01-21 10:05:31 +08:00
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if (common_flags()->no_huge_pages_for_shadow)
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NoHugePagesInRegion(beg, size);
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2015-02-03 18:15:15 +08:00
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if (common_flags()->use_madv_dontdump)
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DontDumpShadowMemory(beg, size);
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2011-11-30 09:07:02 +08:00
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}
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2012-08-27 17:30:58 +08:00
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// --------------- LowLevelAllocateCallbac ---------- {{{1
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static void OnLowLevelAllocate(uptr ptr, uptr size) {
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PoisonShadow(ptr, size, kAsanInternalHeapMagic);
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2011-12-03 05:02:20 +08:00
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}
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2011-11-30 09:07:02 +08:00
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// -------------------------- Run-time entry ------------------- {{{1
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// exported functions
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2011-12-28 08:59:39 +08:00
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#define ASAN_REPORT_ERROR(type, is_write, size) \
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2015-03-18 00:59:11 +08:00
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extern "C" NOINLINE INTERFACE_ATTRIBUTE \
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void __asan_report_ ## type ## size(uptr addr) { \
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GET_CALLER_PC_BP_SP; \
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2015-11-11 19:59:38 +08:00
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ReportGenericError(pc, bp, sp, addr, is_write, size, 0, true); \
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2015-03-18 00:59:11 +08:00
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} \
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extern "C" NOINLINE INTERFACE_ATTRIBUTE \
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void __asan_report_exp_ ## type ## size(uptr addr, u32 exp) { \
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2012-03-15 09:36:00 +08:00
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GET_CALLER_PC_BP_SP; \
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2015-11-11 19:59:38 +08:00
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ReportGenericError(pc, bp, sp, addr, is_write, size, exp, true); \
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} \
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extern "C" NOINLINE INTERFACE_ATTRIBUTE \
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void __asan_report_ ## type ## size ## _noabort(uptr addr) { \
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GET_CALLER_PC_BP_SP; \
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ReportGenericError(pc, bp, sp, addr, is_write, size, 0, false); \
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} \
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2011-11-30 09:07:02 +08:00
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ASAN_REPORT_ERROR(load, false, 1)
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ASAN_REPORT_ERROR(load, false, 2)
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ASAN_REPORT_ERROR(load, false, 4)
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ASAN_REPORT_ERROR(load, false, 8)
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ASAN_REPORT_ERROR(load, false, 16)
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ASAN_REPORT_ERROR(store, true, 1)
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ASAN_REPORT_ERROR(store, true, 2)
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ASAN_REPORT_ERROR(store, true, 4)
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ASAN_REPORT_ERROR(store, true, 8)
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ASAN_REPORT_ERROR(store, true, 16)
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2015-11-11 19:59:38 +08:00
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#define ASAN_REPORT_ERROR_N(type, is_write) \
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extern "C" NOINLINE INTERFACE_ATTRIBUTE \
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void __asan_report_ ## type ## _n(uptr addr, uptr size) { \
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GET_CALLER_PC_BP_SP; \
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ReportGenericError(pc, bp, sp, addr, is_write, size, 0, true); \
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} \
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extern "C" NOINLINE INTERFACE_ATTRIBUTE \
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2015-03-18 00:59:11 +08:00
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void __asan_report_exp_ ## type ## _n(uptr addr, uptr size, u32 exp) { \
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GET_CALLER_PC_BP_SP; \
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2015-11-11 19:59:38 +08:00
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ReportGenericError(pc, bp, sp, addr, is_write, size, exp, true); \
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} \
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extern "C" NOINLINE INTERFACE_ATTRIBUTE \
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void __asan_report_ ## type ## _n_noabort(uptr addr, uptr size) { \
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GET_CALLER_PC_BP_SP; \
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ReportGenericError(pc, bp, sp, addr, is_write, size, 0, false); \
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} \
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2013-02-19 19:30:25 +08:00
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ASAN_REPORT_ERROR_N(load, false)
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ASAN_REPORT_ERROR_N(store, true)
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2015-11-11 19:59:38 +08:00
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#define ASAN_MEMORY_ACCESS_CALLBACK_BODY(type, is_write, size, exp_arg, fatal) \
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2014-04-16 21:52:28 +08:00
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uptr sp = MEM_TO_SHADOW(addr); \
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uptr s = size <= SHADOW_GRANULARITY ? *reinterpret_cast<u8 *>(sp) \
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: *reinterpret_cast<u16 *>(sp); \
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2014-04-21 15:09:01 +08:00
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if (UNLIKELY(s)) { \
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if (UNLIKELY(size >= SHADOW_GRANULARITY || \
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((s8)((addr & (SHADOW_GRANULARITY - 1)) + size - 1)) >= \
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(s8)s)) { \
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2014-04-16 21:52:28 +08:00
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if (__asan_test_only_reported_buggy_pointer) { \
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*__asan_test_only_reported_buggy_pointer = addr; \
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} else { \
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GET_CALLER_PC_BP_SP; \
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2015-11-11 19:59:38 +08:00
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ReportGenericError(pc, bp, sp, addr, is_write, size, exp_arg, \
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fatal); \
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2014-04-16 21:52:28 +08:00
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} \
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} \
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2015-03-18 00:59:11 +08:00
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}
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#define ASAN_MEMORY_ACCESS_CALLBACK(type, is_write, size) \
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extern "C" NOINLINE INTERFACE_ATTRIBUTE \
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void __asan_##type##size(uptr addr) { \
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2015-11-11 19:59:38 +08:00
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ASAN_MEMORY_ACCESS_CALLBACK_BODY(type, is_write, size, 0, true) \
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2015-03-18 00:59:11 +08:00
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} \
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extern "C" NOINLINE INTERFACE_ATTRIBUTE \
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void __asan_exp_##type##size(uptr addr, u32 exp) { \
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2015-11-11 19:59:38 +08:00
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ASAN_MEMORY_ACCESS_CALLBACK_BODY(type, is_write, size, exp, true) \
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} \
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extern "C" NOINLINE INTERFACE_ATTRIBUTE \
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void __asan_##type##size ## _noabort(uptr addr) { \
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ASAN_MEMORY_ACCESS_CALLBACK_BODY(type, is_write, size, 0, false) \
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} \
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2014-04-16 21:52:28 +08:00
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ASAN_MEMORY_ACCESS_CALLBACK(load, false, 1)
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ASAN_MEMORY_ACCESS_CALLBACK(load, false, 2)
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ASAN_MEMORY_ACCESS_CALLBACK(load, false, 4)
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ASAN_MEMORY_ACCESS_CALLBACK(load, false, 8)
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ASAN_MEMORY_ACCESS_CALLBACK(load, false, 16)
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ASAN_MEMORY_ACCESS_CALLBACK(store, true, 1)
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ASAN_MEMORY_ACCESS_CALLBACK(store, true, 2)
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ASAN_MEMORY_ACCESS_CALLBACK(store, true, 4)
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ASAN_MEMORY_ACCESS_CALLBACK(store, true, 8)
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ASAN_MEMORY_ACCESS_CALLBACK(store, true, 16)
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2014-04-21 15:09:01 +08:00
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extern "C"
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2015-03-18 00:59:11 +08:00
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NOINLINE INTERFACE_ATTRIBUTE
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void __asan_loadN(uptr addr, uptr size) {
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if (__asan_region_is_poisoned(addr, size)) {
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GET_CALLER_PC_BP_SP;
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2015-11-11 19:59:38 +08:00
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ReportGenericError(pc, bp, sp, addr, false, size, 0, true);
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2015-03-18 00:59:11 +08:00
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}
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}
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extern "C"
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NOINLINE INTERFACE_ATTRIBUTE
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void __asan_exp_loadN(uptr addr, uptr size, u32 exp) {
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if (__asan_region_is_poisoned(addr, size)) {
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GET_CALLER_PC_BP_SP;
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2015-11-11 19:59:38 +08:00
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ReportGenericError(pc, bp, sp, addr, false, size, exp, true);
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}
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}
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extern "C"
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|
|
NOINLINE INTERFACE_ATTRIBUTE
|
|
|
|
void __asan_loadN_noabort(uptr addr, uptr size) {
|
|
|
|
if (__asan_region_is_poisoned(addr, size)) {
|
|
|
|
GET_CALLER_PC_BP_SP;
|
|
|
|
ReportGenericError(pc, bp, sp, addr, false, size, 0, false);
|
2015-03-18 00:59:11 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
extern "C"
|
|
|
|
NOINLINE INTERFACE_ATTRIBUTE
|
|
|
|
void __asan_storeN(uptr addr, uptr size) {
|
2014-04-21 15:09:01 +08:00
|
|
|
if (__asan_region_is_poisoned(addr, size)) {
|
|
|
|
GET_CALLER_PC_BP_SP;
|
2015-11-11 19:59:38 +08:00
|
|
|
ReportGenericError(pc, bp, sp, addr, true, size, 0, true);
|
2014-04-21 15:09:01 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
extern "C"
|
2015-03-18 00:59:11 +08:00
|
|
|
NOINLINE INTERFACE_ATTRIBUTE
|
|
|
|
void __asan_exp_storeN(uptr addr, uptr size, u32 exp) {
|
2014-04-21 15:09:01 +08:00
|
|
|
if (__asan_region_is_poisoned(addr, size)) {
|
|
|
|
GET_CALLER_PC_BP_SP;
|
2015-11-11 19:59:38 +08:00
|
|
|
ReportGenericError(pc, bp, sp, addr, true, size, exp, true);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
extern "C"
|
|
|
|
NOINLINE INTERFACE_ATTRIBUTE
|
|
|
|
void __asan_storeN_noabort(uptr addr, uptr size) {
|
|
|
|
if (__asan_region_is_poisoned(addr, size)) {
|
|
|
|
GET_CALLER_PC_BP_SP;
|
|
|
|
ReportGenericError(pc, bp, sp, addr, true, size, 0, false);
|
2014-04-21 15:09:01 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2011-11-30 09:07:02 +08:00
|
|
|
// Force the linker to keep the symbols for various ASan interface functions.
|
|
|
|
// We want to keep those in the executable in order to let the instrumented
|
|
|
|
// dynamic libraries access the symbol even if it is not used by the executable
|
|
|
|
// itself. This should help if the build system is removing dead code at link
|
|
|
|
// time.
|
2012-02-27 22:06:48 +08:00
|
|
|
static NOINLINE void force_interface_symbols() {
|
2011-11-30 09:07:02 +08:00
|
|
|
volatile int fake_condition = 0; // prevent dead condition elimination.
|
2012-08-09 17:46:12 +08:00
|
|
|
// __asan_report_* functions are noreturn, so we need a switch to prevent
|
|
|
|
// the compiler from removing any of them.
|
|
|
|
switch (fake_condition) {
|
|
|
|
case 1: __asan_report_load1(0); break;
|
|
|
|
case 2: __asan_report_load2(0); break;
|
|
|
|
case 3: __asan_report_load4(0); break;
|
|
|
|
case 4: __asan_report_load8(0); break;
|
|
|
|
case 5: __asan_report_load16(0); break;
|
2015-03-18 00:59:11 +08:00
|
|
|
case 6: __asan_report_load_n(0, 0); break;
|
|
|
|
case 7: __asan_report_store1(0); break;
|
|
|
|
case 8: __asan_report_store2(0); break;
|
|
|
|
case 9: __asan_report_store4(0); break;
|
|
|
|
case 10: __asan_report_store8(0); break;
|
|
|
|
case 11: __asan_report_store16(0); break;
|
|
|
|
case 12: __asan_report_store_n(0, 0); break;
|
|
|
|
case 13: __asan_report_exp_load1(0, 0); break;
|
|
|
|
case 14: __asan_report_exp_load2(0, 0); break;
|
|
|
|
case 15: __asan_report_exp_load4(0, 0); break;
|
|
|
|
case 16: __asan_report_exp_load8(0, 0); break;
|
|
|
|
case 17: __asan_report_exp_load16(0, 0); break;
|
|
|
|
case 18: __asan_report_exp_load_n(0, 0, 0); break;
|
|
|
|
case 19: __asan_report_exp_store1(0, 0); break;
|
|
|
|
case 20: __asan_report_exp_store2(0, 0); break;
|
|
|
|
case 21: __asan_report_exp_store4(0, 0); break;
|
|
|
|
case 22: __asan_report_exp_store8(0, 0); break;
|
|
|
|
case 23: __asan_report_exp_store16(0, 0); break;
|
|
|
|
case 24: __asan_report_exp_store_n(0, 0, 0); break;
|
2015-10-01 08:22:21 +08:00
|
|
|
case 25: __asan_register_globals(nullptr, 0); break;
|
|
|
|
case 26: __asan_unregister_globals(nullptr, 0); break;
|
|
|
|
case 27: __asan_set_death_callback(nullptr); break;
|
|
|
|
case 28: __asan_set_error_report_callback(nullptr); break;
|
2015-03-18 00:59:11 +08:00
|
|
|
case 29: __asan_handle_no_return(); break;
|
2015-10-01 08:22:21 +08:00
|
|
|
case 30: __asan_address_is_poisoned(nullptr); break;
|
|
|
|
case 31: __asan_poison_memory_region(nullptr, 0); break;
|
|
|
|
case 32: __asan_unpoison_memory_region(nullptr, 0); break;
|
|
|
|
case 34: __asan_before_dynamic_init(nullptr); break;
|
2015-03-18 00:59:11 +08:00
|
|
|
case 35: __asan_after_dynamic_init(); break;
|
|
|
|
case 36: __asan_poison_stack_memory(0, 0); break;
|
|
|
|
case 37: __asan_unpoison_stack_memory(0, 0); break;
|
|
|
|
case 38: __asan_region_is_poisoned(0, 0); break;
|
|
|
|
case 39: __asan_describe_address(0); break;
|
2011-11-30 09:07:02 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void asan_atexit() {
|
2012-08-28 19:34:40 +08:00
|
|
|
Printf("AddressSanitizer exit stats:\n");
|
2011-11-30 09:07:02 +08:00
|
|
|
__asan_print_accumulated_stats();
|
[asan] make asan work with 7fff8000 offset and prelink
When prelink is installed in the system, prelink-ed
libraries map between 0x003000000000 and 0x004000000000 thus occupying the shadow Gap,
so we need so split the address space even further, like this:
|| [0x10007fff8000, 0x7fffffffffff] || HighMem ||
|| [0x02008fff7000, 0x10007fff7fff] || HighShadow ||
|| [0x004000000000, 0x02008fff6fff] || ShadowGap3 ||
|| [0x003000000000, 0x003fffffffff] || MidMem ||
|| [0x00087fff8000, 0x002fffffffff] || ShadowGap2 ||
|| [0x00067fff8000, 0x00087fff7fff] || MidShadow ||
|| [0x00008fff7000, 0x00067fff7fff] || ShadowGap ||
|| [0x00007fff8000, 0x00008fff6fff] || LowShadow ||
|| [0x000000000000, 0x00007fff7fff] || LowMem ||
Do it only if necessary.
Also added a bit of profiling code to make sure that the
mapping code is efficient.
Added a lit test to simulate prelink-ed libraries.
Unfortunately, this test does not work with binutils-gold linker.
If gold is the default linker the test silently passes.
Also replaced
__has_feature(address_sanitizer)
with
__has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
in two places.
Patch partially by Jakub Jelinek.
llvm-svn: 175263
2013-02-15 20:00:24 +08:00
|
|
|
// Print AsanMappingProfile.
|
|
|
|
for (uptr i = 0; i < kAsanMappingProfileSize; i++) {
|
|
|
|
if (AsanMappingProfile[i] == 0) continue;
|
|
|
|
Printf("asan_mapping.h:%zd -- %zd\n", i, AsanMappingProfile[i]);
|
|
|
|
}
|
2011-11-30 09:07:02 +08:00
|
|
|
}
|
|
|
|
|
2013-01-23 21:27:43 +08:00
|
|
|
static void InitializeHighMemEnd() {
|
[asan] make asan work with 7fff8000 offset and prelink
When prelink is installed in the system, prelink-ed
libraries map between 0x003000000000 and 0x004000000000 thus occupying the shadow Gap,
so we need so split the address space even further, like this:
|| [0x10007fff8000, 0x7fffffffffff] || HighMem ||
|| [0x02008fff7000, 0x10007fff7fff] || HighShadow ||
|| [0x004000000000, 0x02008fff6fff] || ShadowGap3 ||
|| [0x003000000000, 0x003fffffffff] || MidMem ||
|| [0x00087fff8000, 0x002fffffffff] || ShadowGap2 ||
|| [0x00067fff8000, 0x00087fff7fff] || MidShadow ||
|| [0x00008fff7000, 0x00067fff7fff] || ShadowGap ||
|| [0x00007fff8000, 0x00008fff6fff] || LowShadow ||
|| [0x000000000000, 0x00007fff7fff] || LowMem ||
Do it only if necessary.
Also added a bit of profiling code to make sure that the
mapping code is efficient.
Added a lit test to simulate prelink-ed libraries.
Unfortunately, this test does not work with binutils-gold linker.
If gold is the default linker the test silently passes.
Also replaced
__has_feature(address_sanitizer)
with
__has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
in two places.
Patch partially by Jakub Jelinek.
llvm-svn: 175263
2013-02-15 20:00:24 +08:00
|
|
|
#if !ASAN_FIXED_MAPPING
|
2013-07-16 17:47:39 +08:00
|
|
|
kHighMemEnd = GetMaxVirtualAddress();
|
|
|
|
// Increase kHighMemEnd to make sure it's properly
|
|
|
|
// aligned together with kHighMemBeg:
|
2016-02-19 01:58:22 +08:00
|
|
|
kHighMemEnd |= SHADOW_GRANULARITY * GetMmapGranularity() - 1;
|
[asan] make asan work with 7fff8000 offset and prelink
When prelink is installed in the system, prelink-ed
libraries map between 0x003000000000 and 0x004000000000 thus occupying the shadow Gap,
so we need so split the address space even further, like this:
|| [0x10007fff8000, 0x7fffffffffff] || HighMem ||
|| [0x02008fff7000, 0x10007fff7fff] || HighShadow ||
|| [0x004000000000, 0x02008fff6fff] || ShadowGap3 ||
|| [0x003000000000, 0x003fffffffff] || MidMem ||
|| [0x00087fff8000, 0x002fffffffff] || ShadowGap2 ||
|| [0x00067fff8000, 0x00087fff7fff] || MidShadow ||
|| [0x00008fff7000, 0x00067fff7fff] || ShadowGap ||
|| [0x00007fff8000, 0x00008fff6fff] || LowShadow ||
|| [0x000000000000, 0x00007fff7fff] || LowMem ||
Do it only if necessary.
Also added a bit of profiling code to make sure that the
mapping code is efficient.
Added a lit test to simulate prelink-ed libraries.
Unfortunately, this test does not work with binutils-gold linker.
If gold is the default linker the test silently passes.
Also replaced
__has_feature(address_sanitizer)
with
__has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
in two places.
Patch partially by Jakub Jelinek.
llvm-svn: 175263
2013-02-15 20:00:24 +08:00
|
|
|
#endif // !ASAN_FIXED_MAPPING
|
2016-02-19 01:58:22 +08:00
|
|
|
CHECK_EQ((kHighMemBeg % GetMmapGranularity()), 0);
|
[asan] make asan work with 7fff8000 offset and prelink
When prelink is installed in the system, prelink-ed
libraries map between 0x003000000000 and 0x004000000000 thus occupying the shadow Gap,
so we need so split the address space even further, like this:
|| [0x10007fff8000, 0x7fffffffffff] || HighMem ||
|| [0x02008fff7000, 0x10007fff7fff] || HighShadow ||
|| [0x004000000000, 0x02008fff6fff] || ShadowGap3 ||
|| [0x003000000000, 0x003fffffffff] || MidMem ||
|| [0x00087fff8000, 0x002fffffffff] || ShadowGap2 ||
|| [0x00067fff8000, 0x00087fff7fff] || MidShadow ||
|| [0x00008fff7000, 0x00067fff7fff] || ShadowGap ||
|| [0x00007fff8000, 0x00008fff6fff] || LowShadow ||
|| [0x000000000000, 0x00007fff7fff] || LowMem ||
Do it only if necessary.
Also added a bit of profiling code to make sure that the
mapping code is efficient.
Added a lit test to simulate prelink-ed libraries.
Unfortunately, this test does not work with binutils-gold linker.
If gold is the default linker the test silently passes.
Also replaced
__has_feature(address_sanitizer)
with
__has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
in two places.
Patch partially by Jakub Jelinek.
llvm-svn: 175263
2013-02-15 20:00:24 +08:00
|
|
|
}
|
|
|
|
|
2015-04-10 23:31:16 +08:00
|
|
|
static void ProtectGap(uptr addr, uptr size) {
|
2015-11-14 08:50:23 +08:00
|
|
|
if (!flags()->protect_shadow_gap)
|
|
|
|
return;
|
2016-04-23 07:46:53 +08:00
|
|
|
void *res = MmapFixedNoAccess(addr, size, "shadow gap");
|
2015-04-10 23:31:16 +08:00
|
|
|
if (addr == (uptr)res)
|
2015-02-02 23:04:23 +08:00
|
|
|
return;
|
2015-08-08 06:38:44 +08:00
|
|
|
// A few pages at the start of the address space can not be protected.
|
|
|
|
// But we really want to protect as much as possible, to prevent this memory
|
|
|
|
// being returned as a result of a non-FIXED mmap().
|
|
|
|
if (addr == kZeroBaseShadowStart) {
|
2016-02-19 01:58:22 +08:00
|
|
|
uptr step = GetMmapGranularity();
|
2015-08-08 06:38:44 +08:00
|
|
|
while (size > step && addr < kZeroBaseMaxShadowStart) {
|
|
|
|
addr += step;
|
|
|
|
size -= step;
|
2016-04-23 07:46:53 +08:00
|
|
|
void *res = MmapFixedNoAccess(addr, size, "shadow gap");
|
2015-08-08 06:38:44 +08:00
|
|
|
if (addr == (uptr)res)
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-02-02 23:04:23 +08:00
|
|
|
Report("ERROR: Failed to protect the shadow gap. "
|
|
|
|
"ASan cannot proceed correctly. ABORTING.\n");
|
|
|
|
DumpProcessMap();
|
|
|
|
Die();
|
[asan] make asan work with 7fff8000 offset and prelink
When prelink is installed in the system, prelink-ed
libraries map between 0x003000000000 and 0x004000000000 thus occupying the shadow Gap,
so we need so split the address space even further, like this:
|| [0x10007fff8000, 0x7fffffffffff] || HighMem ||
|| [0x02008fff7000, 0x10007fff7fff] || HighShadow ||
|| [0x004000000000, 0x02008fff6fff] || ShadowGap3 ||
|| [0x003000000000, 0x003fffffffff] || MidMem ||
|| [0x00087fff8000, 0x002fffffffff] || ShadowGap2 ||
|| [0x00067fff8000, 0x00087fff7fff] || MidShadow ||
|| [0x00008fff7000, 0x00067fff7fff] || ShadowGap ||
|| [0x00007fff8000, 0x00008fff6fff] || LowShadow ||
|| [0x000000000000, 0x00007fff7fff] || LowMem ||
Do it only if necessary.
Also added a bit of profiling code to make sure that the
mapping code is efficient.
Added a lit test to simulate prelink-ed libraries.
Unfortunately, this test does not work with binutils-gold linker.
If gold is the default linker the test silently passes.
Also replaced
__has_feature(address_sanitizer)
with
__has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
in two places.
Patch partially by Jakub Jelinek.
llvm-svn: 175263
2013-02-15 20:00:24 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
static void PrintAddressSpaceLayout() {
|
|
|
|
Printf("|| `[%p, %p]` || HighMem ||\n",
|
|
|
|
(void*)kHighMemBeg, (void*)kHighMemEnd);
|
|
|
|
Printf("|| `[%p, %p]` || HighShadow ||\n",
|
|
|
|
(void*)kHighShadowBeg, (void*)kHighShadowEnd);
|
|
|
|
if (kMidMemBeg) {
|
|
|
|
Printf("|| `[%p, %p]` || ShadowGap3 ||\n",
|
|
|
|
(void*)kShadowGap3Beg, (void*)kShadowGap3End);
|
|
|
|
Printf("|| `[%p, %p]` || MidMem ||\n",
|
|
|
|
(void*)kMidMemBeg, (void*)kMidMemEnd);
|
|
|
|
Printf("|| `[%p, %p]` || ShadowGap2 ||\n",
|
|
|
|
(void*)kShadowGap2Beg, (void*)kShadowGap2End);
|
|
|
|
Printf("|| `[%p, %p]` || MidShadow ||\n",
|
|
|
|
(void*)kMidShadowBeg, (void*)kMidShadowEnd);
|
|
|
|
}
|
|
|
|
Printf("|| `[%p, %p]` || ShadowGap ||\n",
|
|
|
|
(void*)kShadowGapBeg, (void*)kShadowGapEnd);
|
|
|
|
if (kLowShadowBeg) {
|
|
|
|
Printf("|| `[%p, %p]` || LowShadow ||\n",
|
|
|
|
(void*)kLowShadowBeg, (void*)kLowShadowEnd);
|
|
|
|
Printf("|| `[%p, %p]` || LowMem ||\n",
|
|
|
|
(void*)kLowMemBeg, (void*)kLowMemEnd);
|
|
|
|
}
|
|
|
|
Printf("MemToShadow(shadow): %p %p %p %p",
|
|
|
|
(void*)MEM_TO_SHADOW(kLowShadowBeg),
|
|
|
|
(void*)MEM_TO_SHADOW(kLowShadowEnd),
|
|
|
|
(void*)MEM_TO_SHADOW(kHighShadowBeg),
|
|
|
|
(void*)MEM_TO_SHADOW(kHighShadowEnd));
|
|
|
|
if (kMidMemBeg) {
|
|
|
|
Printf(" %p %p",
|
|
|
|
(void*)MEM_TO_SHADOW(kMidShadowBeg),
|
|
|
|
(void*)MEM_TO_SHADOW(kMidShadowEnd));
|
|
|
|
}
|
|
|
|
Printf("\n");
|
2014-01-09 22:41:03 +08:00
|
|
|
Printf("redzone=%zu\n", (uptr)flags()->redzone);
|
|
|
|
Printf("max_redzone=%zu\n", (uptr)flags()->max_redzone);
|
2015-01-07 10:37:52 +08:00
|
|
|
Printf("quarantine_size_mb=%zuM\n", (uptr)flags()->quarantine_size_mb);
|
2013-05-06 19:27:58 +08:00
|
|
|
Printf("malloc_context_size=%zu\n",
|
|
|
|
(uptr)common_flags()->malloc_context_size);
|
[asan] make asan work with 7fff8000 offset and prelink
When prelink is installed in the system, prelink-ed
libraries map between 0x003000000000 and 0x004000000000 thus occupying the shadow Gap,
so we need so split the address space even further, like this:
|| [0x10007fff8000, 0x7fffffffffff] || HighMem ||
|| [0x02008fff7000, 0x10007fff7fff] || HighShadow ||
|| [0x004000000000, 0x02008fff6fff] || ShadowGap3 ||
|| [0x003000000000, 0x003fffffffff] || MidMem ||
|| [0x00087fff8000, 0x002fffffffff] || ShadowGap2 ||
|| [0x00067fff8000, 0x00087fff7fff] || MidShadow ||
|| [0x00008fff7000, 0x00067fff7fff] || ShadowGap ||
|| [0x00007fff8000, 0x00008fff6fff] || LowShadow ||
|| [0x000000000000, 0x00007fff7fff] || LowMem ||
Do it only if necessary.
Also added a bit of profiling code to make sure that the
mapping code is efficient.
Added a lit test to simulate prelink-ed libraries.
Unfortunately, this test does not work with binutils-gold linker.
If gold is the default linker the test silently passes.
Also replaced
__has_feature(address_sanitizer)
with
__has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
in two places.
Patch partially by Jakub Jelinek.
llvm-svn: 175263
2013-02-15 20:00:24 +08:00
|
|
|
|
2015-04-25 18:57:35 +08:00
|
|
|
Printf("SHADOW_SCALE: %d\n", (int)SHADOW_SCALE);
|
|
|
|
Printf("SHADOW_GRANULARITY: %d\n", (int)SHADOW_GRANULARITY);
|
|
|
|
Printf("SHADOW_OFFSET: 0x%zx\n", (uptr)SHADOW_OFFSET);
|
[asan] make asan work with 7fff8000 offset and prelink
When prelink is installed in the system, prelink-ed
libraries map between 0x003000000000 and 0x004000000000 thus occupying the shadow Gap,
so we need so split the address space even further, like this:
|| [0x10007fff8000, 0x7fffffffffff] || HighMem ||
|| [0x02008fff7000, 0x10007fff7fff] || HighShadow ||
|| [0x004000000000, 0x02008fff6fff] || ShadowGap3 ||
|| [0x003000000000, 0x003fffffffff] || MidMem ||
|| [0x00087fff8000, 0x002fffffffff] || ShadowGap2 ||
|| [0x00067fff8000, 0x00087fff7fff] || MidShadow ||
|| [0x00008fff7000, 0x00067fff7fff] || ShadowGap ||
|| [0x00007fff8000, 0x00008fff6fff] || LowShadow ||
|| [0x000000000000, 0x00007fff7fff] || LowMem ||
Do it only if necessary.
Also added a bit of profiling code to make sure that the
mapping code is efficient.
Added a lit test to simulate prelink-ed libraries.
Unfortunately, this test does not work with binutils-gold linker.
If gold is the default linker the test silently passes.
Also replaced
__has_feature(address_sanitizer)
with
__has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
in two places.
Patch partially by Jakub Jelinek.
llvm-svn: 175263
2013-02-15 20:00:24 +08:00
|
|
|
CHECK(SHADOW_SCALE >= 3 && SHADOW_SCALE <= 7);
|
|
|
|
if (kMidMemBeg)
|
|
|
|
CHECK(kMidShadowBeg > kLowShadowEnd &&
|
|
|
|
kMidMemBeg > kMidShadowEnd &&
|
|
|
|
kHighShadowBeg > kMidMemEnd);
|
2013-01-23 21:27:43 +08:00
|
|
|
}
|
|
|
|
|
2014-01-16 20:31:50 +08:00
|
|
|
static void AsanInitInternal() {
|
2014-05-14 22:03:31 +08:00
|
|
|
if (LIKELY(asan_inited)) return;
|
2013-01-31 22:11:21 +08:00
|
|
|
SanitizerToolName = "AddressSanitizer";
|
2012-08-27 17:30:58 +08:00
|
|
|
CHECK(!asan_init_is_running && "ASan init calls itself!");
|
2012-05-25 23:37:16 +08:00
|
|
|
asan_init_is_running = true;
|
2014-05-14 16:13:11 +08:00
|
|
|
|
2015-07-22 07:03:13 +08:00
|
|
|
CacheBinaryName();
|
|
|
|
|
2014-05-14 16:13:11 +08:00
|
|
|
// Initialize flags. This must be done early, because most of the
|
|
|
|
// initialization steps look at flags().
|
2015-02-12 08:36:42 +08:00
|
|
|
InitializeFlags();
|
2014-05-14 16:13:11 +08:00
|
|
|
|
2015-06-04 15:23:09 +08:00
|
|
|
AsanCheckIncompatibleRT();
|
|
|
|
AsanCheckDynamicRTPrereqs();
|
[sanitizer] [SystemZ] Abort if the kernel might be vulnerable to CVE-2016-2143.
In short, CVE-2016-2143 will crash the machine if a process uses both >4TB
virtual addresses and fork(). ASan, TSan, and MSan will, by necessity, map
a sizable chunk of virtual address space, which is much larger than 4TB.
Even worse, sanitizers will always use fork() for llvm-symbolizer when a bug
is detected. Disable all three by aborting on process initialization if
the running kernel version is not known to contain a fix.
Unfortunately, there's no reliable way to detect the fix without crashing
the kernel. So, we rely on whitelisting - I've included a list of upstream
kernel versions that will work. In case someone uses a distribution kernel
or applied the fix themselves, an override switch is also included.
Differential Revision: http://reviews.llvm.org/D19576
llvm-svn: 267747
2016-04-28 01:42:00 +08:00
|
|
|
AvoidCVE_2016_2143();
|
2015-06-04 15:23:09 +08:00
|
|
|
|
2014-12-17 08:01:02 +08:00
|
|
|
SetCanPoisonMemory(flags()->poison_heap);
|
2014-12-16 09:23:03 +08:00
|
|
|
SetMallocContextSize(common_flags()->malloc_context_size);
|
|
|
|
|
2013-01-23 21:27:43 +08:00
|
|
|
InitializeHighMemEnd();
|
2012-05-25 23:37:16 +08:00
|
|
|
|
|
|
|
// Make sure we are not statically linked.
|
|
|
|
AsanDoesNotSupportStaticLinkage();
|
|
|
|
|
2012-09-11 17:44:48 +08:00
|
|
|
// Install tool-specific callbacks in sanitizer_common.
|
2015-08-25 06:21:44 +08:00
|
|
|
AddDieCallback(AsanDie);
|
2012-09-11 17:44:48 +08:00
|
|
|
SetCheckFailedCallback(AsanCheckFailed);
|
2012-08-28 19:34:40 +08:00
|
|
|
SetPrintfAndReportCallback(AppendToErrorMessageBuffer);
|
|
|
|
|
2013-06-25 21:50:44 +08:00
|
|
|
__sanitizer_set_report_path(common_flags()->log_path);
|
2014-12-12 09:08:24 +08:00
|
|
|
|
|
|
|
// Enable UAR detection, if required.
|
2013-09-18 18:35:12 +08:00
|
|
|
__asan_option_detect_stack_use_after_return =
|
|
|
|
flags()->detect_stack_use_after_return;
|
2014-01-16 20:31:50 +08:00
|
|
|
|
2012-08-24 17:22:05 +08:00
|
|
|
// Re-exec ourselves if we need to set additional env or command line args.
|
|
|
|
MaybeReexec();
|
|
|
|
|
2012-08-27 22:04:54 +08:00
|
|
|
// Setup internal allocator callback.
|
|
|
|
SetLowLevelAllocateCallback(OnLowLevelAllocate);
|
|
|
|
|
2011-11-30 09:07:02 +08:00
|
|
|
InitializeAsanInterceptors();
|
|
|
|
|
2014-09-15 19:37:40 +08:00
|
|
|
// Enable system log ("adb logcat") on Android.
|
|
|
|
// Doing this before interceptors are initialized crashes in:
|
|
|
|
// AsanInitInternal -> android_log_write -> __interceptor_strcmp
|
|
|
|
AndroidLogInit();
|
|
|
|
|
2011-11-30 09:07:02 +08:00
|
|
|
ReplaceSystemMalloc();
|
|
|
|
|
[asan] make asan work with 7fff8000 offset and prelink
When prelink is installed in the system, prelink-ed
libraries map between 0x003000000000 and 0x004000000000 thus occupying the shadow Gap,
so we need so split the address space even further, like this:
|| [0x10007fff8000, 0x7fffffffffff] || HighMem ||
|| [0x02008fff7000, 0x10007fff7fff] || HighShadow ||
|| [0x004000000000, 0x02008fff6fff] || ShadowGap3 ||
|| [0x003000000000, 0x003fffffffff] || MidMem ||
|| [0x00087fff8000, 0x002fffffffff] || ShadowGap2 ||
|| [0x00067fff8000, 0x00087fff7fff] || MidShadow ||
|| [0x00008fff7000, 0x00067fff7fff] || ShadowGap ||
|| [0x00007fff8000, 0x00008fff6fff] || LowShadow ||
|| [0x000000000000, 0x00007fff7fff] || LowMem ||
Do it only if necessary.
Also added a bit of profiling code to make sure that the
mapping code is efficient.
Added a lit test to simulate prelink-ed libraries.
Unfortunately, this test does not work with binutils-gold linker.
If gold is the default linker the test silently passes.
Also replaced
__has_feature(address_sanitizer)
with
__has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
in two places.
Patch partially by Jakub Jelinek.
llvm-svn: 175263
2013-02-15 20:00:24 +08:00
|
|
|
uptr shadow_start = kLowShadowBeg;
|
2013-07-16 17:47:39 +08:00
|
|
|
if (kLowShadowBeg)
|
|
|
|
shadow_start -= GetMmapGranularity();
|
[asan] make asan work with 7fff8000 offset and prelink
When prelink is installed in the system, prelink-ed
libraries map between 0x003000000000 and 0x004000000000 thus occupying the shadow Gap,
so we need so split the address space even further, like this:
|| [0x10007fff8000, 0x7fffffffffff] || HighMem ||
|| [0x02008fff7000, 0x10007fff7fff] || HighShadow ||
|| [0x004000000000, 0x02008fff6fff] || ShadowGap3 ||
|| [0x003000000000, 0x003fffffffff] || MidMem ||
|| [0x00087fff8000, 0x002fffffffff] || ShadowGap2 ||
|| [0x00067fff8000, 0x00087fff7fff] || MidShadow ||
|| [0x00008fff7000, 0x00067fff7fff] || ShadowGap ||
|| [0x00007fff8000, 0x00008fff6fff] || LowShadow ||
|| [0x000000000000, 0x00007fff7fff] || LowMem ||
Do it only if necessary.
Also added a bit of profiling code to make sure that the
mapping code is efficient.
Added a lit test to simulate prelink-ed libraries.
Unfortunately, this test does not work with binutils-gold linker.
If gold is the default linker the test silently passes.
Also replaced
__has_feature(address_sanitizer)
with
__has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
in two places.
Patch partially by Jakub Jelinek.
llvm-svn: 175263
2013-02-15 20:00:24 +08:00
|
|
|
bool full_shadow_is_available =
|
2013-07-16 17:47:39 +08:00
|
|
|
MemoryRangeIsAvailable(shadow_start, kHighShadowEnd);
|
[asan] make asan work with 7fff8000 offset and prelink
When prelink is installed in the system, prelink-ed
libraries map between 0x003000000000 and 0x004000000000 thus occupying the shadow Gap,
so we need so split the address space even further, like this:
|| [0x10007fff8000, 0x7fffffffffff] || HighMem ||
|| [0x02008fff7000, 0x10007fff7fff] || HighShadow ||
|| [0x004000000000, 0x02008fff6fff] || ShadowGap3 ||
|| [0x003000000000, 0x003fffffffff] || MidMem ||
|| [0x00087fff8000, 0x002fffffffff] || ShadowGap2 ||
|| [0x00067fff8000, 0x00087fff7fff] || MidShadow ||
|| [0x00008fff7000, 0x00067fff7fff] || ShadowGap ||
|| [0x00007fff8000, 0x00008fff6fff] || LowShadow ||
|| [0x000000000000, 0x00007fff7fff] || LowMem ||
Do it only if necessary.
Also added a bit of profiling code to make sure that the
mapping code is efficient.
Added a lit test to simulate prelink-ed libraries.
Unfortunately, this test does not work with binutils-gold linker.
If gold is the default linker the test silently passes.
Also replaced
__has_feature(address_sanitizer)
with
__has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
in two places.
Patch partially by Jakub Jelinek.
llvm-svn: 175263
2013-02-15 20:00:24 +08:00
|
|
|
|
2014-07-11 23:22:45 +08:00
|
|
|
#if SANITIZER_LINUX && defined(__x86_64__) && defined(_LP64) && \
|
|
|
|
!ASAN_FIXED_MAPPING
|
[asan] make asan work with 7fff8000 offset and prelink
When prelink is installed in the system, prelink-ed
libraries map between 0x003000000000 and 0x004000000000 thus occupying the shadow Gap,
so we need so split the address space even further, like this:
|| [0x10007fff8000, 0x7fffffffffff] || HighMem ||
|| [0x02008fff7000, 0x10007fff7fff] || HighShadow ||
|| [0x004000000000, 0x02008fff6fff] || ShadowGap3 ||
|| [0x003000000000, 0x003fffffffff] || MidMem ||
|| [0x00087fff8000, 0x002fffffffff] || ShadowGap2 ||
|| [0x00067fff8000, 0x00087fff7fff] || MidShadow ||
|| [0x00008fff7000, 0x00067fff7fff] || ShadowGap ||
|| [0x00007fff8000, 0x00008fff6fff] || LowShadow ||
|| [0x000000000000, 0x00007fff7fff] || LowMem ||
Do it only if necessary.
Also added a bit of profiling code to make sure that the
mapping code is efficient.
Added a lit test to simulate prelink-ed libraries.
Unfortunately, this test does not work with binutils-gold linker.
If gold is the default linker the test silently passes.
Also replaced
__has_feature(address_sanitizer)
with
__has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
in two places.
Patch partially by Jakub Jelinek.
llvm-svn: 175263
2013-02-15 20:00:24 +08:00
|
|
|
if (!full_shadow_is_available) {
|
|
|
|
kMidMemBeg = kLowMemEnd < 0x3000000000ULL ? 0x3000000000ULL : 0;
|
2013-02-28 20:28:37 +08:00
|
|
|
kMidMemEnd = kLowMemEnd < 0x3000000000ULL ? 0x4fffffffffULL : 0;
|
2011-11-30 09:07:02 +08:00
|
|
|
}
|
2016-06-07 02:09:54 +08:00
|
|
|
#elif SANITIZER_WINDOWS64
|
|
|
|
// Disable the "mid mem" shadow layout.
|
|
|
|
if (!full_shadow_is_available) {
|
|
|
|
kMidMemBeg = 0;
|
|
|
|
kMidMemEnd = 0;
|
|
|
|
}
|
[asan] make asan work with 7fff8000 offset and prelink
When prelink is installed in the system, prelink-ed
libraries map between 0x003000000000 and 0x004000000000 thus occupying the shadow Gap,
so we need so split the address space even further, like this:
|| [0x10007fff8000, 0x7fffffffffff] || HighMem ||
|| [0x02008fff7000, 0x10007fff7fff] || HighShadow ||
|| [0x004000000000, 0x02008fff6fff] || ShadowGap3 ||
|| [0x003000000000, 0x003fffffffff] || MidMem ||
|| [0x00087fff8000, 0x002fffffffff] || ShadowGap2 ||
|| [0x00067fff8000, 0x00087fff7fff] || MidShadow ||
|| [0x00008fff7000, 0x00067fff7fff] || ShadowGap ||
|| [0x00007fff8000, 0x00008fff6fff] || LowShadow ||
|| [0x000000000000, 0x00007fff7fff] || LowMem ||
Do it only if necessary.
Also added a bit of profiling code to make sure that the
mapping code is efficient.
Added a lit test to simulate prelink-ed libraries.
Unfortunately, this test does not work with binutils-gold linker.
If gold is the default linker the test silently passes.
Also replaced
__has_feature(address_sanitizer)
with
__has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
in two places.
Patch partially by Jakub Jelinek.
llvm-svn: 175263
2013-02-15 20:00:24 +08:00
|
|
|
#endif
|
|
|
|
|
2015-01-20 21:21:20 +08:00
|
|
|
if (Verbosity()) PrintAddressSpaceLayout();
|
2011-11-30 09:07:02 +08:00
|
|
|
|
2014-08-13 06:31:19 +08:00
|
|
|
DisableCoreDumperIfNecessary();
|
2011-11-30 09:07:02 +08:00
|
|
|
|
[asan] make asan work with 7fff8000 offset and prelink
When prelink is installed in the system, prelink-ed
libraries map between 0x003000000000 and 0x004000000000 thus occupying the shadow Gap,
so we need so split the address space even further, like this:
|| [0x10007fff8000, 0x7fffffffffff] || HighMem ||
|| [0x02008fff7000, 0x10007fff7fff] || HighShadow ||
|| [0x004000000000, 0x02008fff6fff] || ShadowGap3 ||
|| [0x003000000000, 0x003fffffffff] || MidMem ||
|| [0x00087fff8000, 0x002fffffffff] || ShadowGap2 ||
|| [0x00067fff8000, 0x00087fff7fff] || MidShadow ||
|| [0x00008fff7000, 0x00067fff7fff] || ShadowGap ||
|| [0x00007fff8000, 0x00008fff6fff] || LowShadow ||
|| [0x000000000000, 0x00007fff7fff] || LowMem ||
Do it only if necessary.
Also added a bit of profiling code to make sure that the
mapping code is efficient.
Added a lit test to simulate prelink-ed libraries.
Unfortunately, this test does not work with binutils-gold linker.
If gold is the default linker the test silently passes.
Also replaced
__has_feature(address_sanitizer)
with
__has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
in two places.
Patch partially by Jakub Jelinek.
llvm-svn: 175263
2013-02-15 20:00:24 +08:00
|
|
|
if (full_shadow_is_available) {
|
|
|
|
// mmap the low shadow plus at least one page at the left.
|
|
|
|
if (kLowShadowBeg)
|
2015-05-30 06:31:28 +08:00
|
|
|
ReserveShadowMemoryRange(shadow_start, kLowShadowEnd, "low shadow");
|
[asan] make asan work with 7fff8000 offset and prelink
When prelink is installed in the system, prelink-ed
libraries map between 0x003000000000 and 0x004000000000 thus occupying the shadow Gap,
so we need so split the address space even further, like this:
|| [0x10007fff8000, 0x7fffffffffff] || HighMem ||
|| [0x02008fff7000, 0x10007fff7fff] || HighShadow ||
|| [0x004000000000, 0x02008fff6fff] || ShadowGap3 ||
|| [0x003000000000, 0x003fffffffff] || MidMem ||
|| [0x00087fff8000, 0x002fffffffff] || ShadowGap2 ||
|| [0x00067fff8000, 0x00087fff7fff] || MidShadow ||
|| [0x00008fff7000, 0x00067fff7fff] || ShadowGap ||
|| [0x00007fff8000, 0x00008fff6fff] || LowShadow ||
|| [0x000000000000, 0x00007fff7fff] || LowMem ||
Do it only if necessary.
Also added a bit of profiling code to make sure that the
mapping code is efficient.
Added a lit test to simulate prelink-ed libraries.
Unfortunately, this test does not work with binutils-gold linker.
If gold is the default linker the test silently passes.
Also replaced
__has_feature(address_sanitizer)
with
__has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
in two places.
Patch partially by Jakub Jelinek.
llvm-svn: 175263
2013-02-15 20:00:24 +08:00
|
|
|
// mmap the high shadow.
|
2015-05-30 06:31:28 +08:00
|
|
|
ReserveShadowMemoryRange(kHighShadowBeg, kHighShadowEnd, "high shadow");
|
[asan] make asan work with 7fff8000 offset and prelink
When prelink is installed in the system, prelink-ed
libraries map between 0x003000000000 and 0x004000000000 thus occupying the shadow Gap,
so we need so split the address space even further, like this:
|| [0x10007fff8000, 0x7fffffffffff] || HighMem ||
|| [0x02008fff7000, 0x10007fff7fff] || HighShadow ||
|| [0x004000000000, 0x02008fff6fff] || ShadowGap3 ||
|| [0x003000000000, 0x003fffffffff] || MidMem ||
|| [0x00087fff8000, 0x002fffffffff] || ShadowGap2 ||
|| [0x00067fff8000, 0x00087fff7fff] || MidShadow ||
|| [0x00008fff7000, 0x00067fff7fff] || ShadowGap ||
|| [0x00007fff8000, 0x00008fff6fff] || LowShadow ||
|| [0x000000000000, 0x00007fff7fff] || LowMem ||
Do it only if necessary.
Also added a bit of profiling code to make sure that the
mapping code is efficient.
Added a lit test to simulate prelink-ed libraries.
Unfortunately, this test does not work with binutils-gold linker.
If gold is the default linker the test silently passes.
Also replaced
__has_feature(address_sanitizer)
with
__has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
in two places.
Patch partially by Jakub Jelinek.
llvm-svn: 175263
2013-02-15 20:00:24 +08:00
|
|
|
// protect the gap.
|
|
|
|
ProtectGap(kShadowGapBeg, kShadowGapEnd - kShadowGapBeg + 1);
|
2014-03-27 15:36:26 +08:00
|
|
|
CHECK_EQ(kShadowGapEnd, kHighShadowBeg - 1);
|
[asan] make asan work with 7fff8000 offset and prelink
When prelink is installed in the system, prelink-ed
libraries map between 0x003000000000 and 0x004000000000 thus occupying the shadow Gap,
so we need so split the address space even further, like this:
|| [0x10007fff8000, 0x7fffffffffff] || HighMem ||
|| [0x02008fff7000, 0x10007fff7fff] || HighShadow ||
|| [0x004000000000, 0x02008fff6fff] || ShadowGap3 ||
|| [0x003000000000, 0x003fffffffff] || MidMem ||
|| [0x00087fff8000, 0x002fffffffff] || ShadowGap2 ||
|| [0x00067fff8000, 0x00087fff7fff] || MidShadow ||
|| [0x00008fff7000, 0x00067fff7fff] || ShadowGap ||
|| [0x00007fff8000, 0x00008fff6fff] || LowShadow ||
|| [0x000000000000, 0x00007fff7fff] || LowMem ||
Do it only if necessary.
Also added a bit of profiling code to make sure that the
mapping code is efficient.
Added a lit test to simulate prelink-ed libraries.
Unfortunately, this test does not work with binutils-gold linker.
If gold is the default linker the test silently passes.
Also replaced
__has_feature(address_sanitizer)
with
__has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
in two places.
Patch partially by Jakub Jelinek.
llvm-svn: 175263
2013-02-15 20:00:24 +08:00
|
|
|
} else if (kMidMemBeg &&
|
|
|
|
MemoryRangeIsAvailable(shadow_start, kMidMemBeg - 1) &&
|
2013-07-16 17:47:39 +08:00
|
|
|
MemoryRangeIsAvailable(kMidMemEnd + 1, kHighShadowEnd)) {
|
[asan] make asan work with 7fff8000 offset and prelink
When prelink is installed in the system, prelink-ed
libraries map between 0x003000000000 and 0x004000000000 thus occupying the shadow Gap,
so we need so split the address space even further, like this:
|| [0x10007fff8000, 0x7fffffffffff] || HighMem ||
|| [0x02008fff7000, 0x10007fff7fff] || HighShadow ||
|| [0x004000000000, 0x02008fff6fff] || ShadowGap3 ||
|| [0x003000000000, 0x003fffffffff] || MidMem ||
|| [0x00087fff8000, 0x002fffffffff] || ShadowGap2 ||
|| [0x00067fff8000, 0x00087fff7fff] || MidShadow ||
|| [0x00008fff7000, 0x00067fff7fff] || ShadowGap ||
|| [0x00007fff8000, 0x00008fff6fff] || LowShadow ||
|| [0x000000000000, 0x00007fff7fff] || LowMem ||
Do it only if necessary.
Also added a bit of profiling code to make sure that the
mapping code is efficient.
Added a lit test to simulate prelink-ed libraries.
Unfortunately, this test does not work with binutils-gold linker.
If gold is the default linker the test silently passes.
Also replaced
__has_feature(address_sanitizer)
with
__has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
in two places.
Patch partially by Jakub Jelinek.
llvm-svn: 175263
2013-02-15 20:00:24 +08:00
|
|
|
CHECK(kLowShadowBeg != kLowShadowEnd);
|
|
|
|
// mmap the low shadow plus at least one page at the left.
|
2015-05-30 06:31:28 +08:00
|
|
|
ReserveShadowMemoryRange(shadow_start, kLowShadowEnd, "low shadow");
|
[asan] make asan work with 7fff8000 offset and prelink
When prelink is installed in the system, prelink-ed
libraries map between 0x003000000000 and 0x004000000000 thus occupying the shadow Gap,
so we need so split the address space even further, like this:
|| [0x10007fff8000, 0x7fffffffffff] || HighMem ||
|| [0x02008fff7000, 0x10007fff7fff] || HighShadow ||
|| [0x004000000000, 0x02008fff6fff] || ShadowGap3 ||
|| [0x003000000000, 0x003fffffffff] || MidMem ||
|| [0x00087fff8000, 0x002fffffffff] || ShadowGap2 ||
|| [0x00067fff8000, 0x00087fff7fff] || MidShadow ||
|| [0x00008fff7000, 0x00067fff7fff] || ShadowGap ||
|| [0x00007fff8000, 0x00008fff6fff] || LowShadow ||
|| [0x000000000000, 0x00007fff7fff] || LowMem ||
Do it only if necessary.
Also added a bit of profiling code to make sure that the
mapping code is efficient.
Added a lit test to simulate prelink-ed libraries.
Unfortunately, this test does not work with binutils-gold linker.
If gold is the default linker the test silently passes.
Also replaced
__has_feature(address_sanitizer)
with
__has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
in two places.
Patch partially by Jakub Jelinek.
llvm-svn: 175263
2013-02-15 20:00:24 +08:00
|
|
|
// mmap the mid shadow.
|
2015-05-30 06:31:28 +08:00
|
|
|
ReserveShadowMemoryRange(kMidShadowBeg, kMidShadowEnd, "mid shadow");
|
2012-01-10 03:18:27 +08:00
|
|
|
// mmap the high shadow.
|
2015-05-30 06:31:28 +08:00
|
|
|
ReserveShadowMemoryRange(kHighShadowBeg, kHighShadowEnd, "high shadow");
|
[asan] make asan work with 7fff8000 offset and prelink
When prelink is installed in the system, prelink-ed
libraries map between 0x003000000000 and 0x004000000000 thus occupying the shadow Gap,
so we need so split the address space even further, like this:
|| [0x10007fff8000, 0x7fffffffffff] || HighMem ||
|| [0x02008fff7000, 0x10007fff7fff] || HighShadow ||
|| [0x004000000000, 0x02008fff6fff] || ShadowGap3 ||
|| [0x003000000000, 0x003fffffffff] || MidMem ||
|| [0x00087fff8000, 0x002fffffffff] || ShadowGap2 ||
|| [0x00067fff8000, 0x00087fff7fff] || MidShadow ||
|| [0x00008fff7000, 0x00067fff7fff] || ShadowGap ||
|| [0x00007fff8000, 0x00008fff6fff] || LowShadow ||
|| [0x000000000000, 0x00007fff7fff] || LowMem ||
Do it only if necessary.
Also added a bit of profiling code to make sure that the
mapping code is efficient.
Added a lit test to simulate prelink-ed libraries.
Unfortunately, this test does not work with binutils-gold linker.
If gold is the default linker the test silently passes.
Also replaced
__has_feature(address_sanitizer)
with
__has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
in two places.
Patch partially by Jakub Jelinek.
llvm-svn: 175263
2013-02-15 20:00:24 +08:00
|
|
|
// protect the gaps.
|
|
|
|
ProtectGap(kShadowGapBeg, kShadowGapEnd - kShadowGapBeg + 1);
|
|
|
|
ProtectGap(kShadowGap2Beg, kShadowGap2End - kShadowGap2Beg + 1);
|
|
|
|
ProtectGap(kShadowGap3Beg, kShadowGap3End - kShadowGap3Beg + 1);
|
2012-02-13 23:11:23 +08:00
|
|
|
} else {
|
|
|
|
Report("Shadow memory range interleaves with an existing memory mapping. "
|
|
|
|
"ASan cannot proceed correctly. ABORTING.\n");
|
2015-01-22 20:05:27 +08:00
|
|
|
Report("ASan shadow was supposed to be located in the [%p-%p] range.\n",
|
|
|
|
shadow_start, kHighShadowEnd);
|
2012-06-15 14:08:19 +08:00
|
|
|
DumpProcessMap();
|
2012-06-06 15:02:44 +08:00
|
|
|
Die();
|
2011-11-30 09:07:02 +08:00
|
|
|
}
|
|
|
|
|
2013-10-17 21:18:21 +08:00
|
|
|
AsanTSDInit(PlatformTSDDtor);
|
2015-08-07 01:52:54 +08:00
|
|
|
InstallDeadlySignalHandlers(AsanOnDeadlySignal);
|
2013-06-11 16:13:36 +08:00
|
|
|
|
2014-12-20 03:35:11 +08:00
|
|
|
AllocatorOptions allocator_options;
|
|
|
|
allocator_options.SetFrom(flags(), common_flags());
|
|
|
|
InitializeAllocator(allocator_options);
|
2013-06-11 16:13:36 +08:00
|
|
|
|
2014-12-17 03:13:01 +08:00
|
|
|
MaybeStartBackgroudThread();
|
2015-01-07 07:53:32 +08:00
|
|
|
SetSoftRssLimitExceededCallback(AsanSoftRssLimitExceededCallback);
|
2014-12-17 03:13:01 +08:00
|
|
|
|
2011-11-30 09:07:02 +08:00
|
|
|
// On Linux AsanThread::ThreadStart() calls malloc() that's why asan_inited
|
|
|
|
// should be set to 1 prior to initializing the threads.
|
|
|
|
asan_inited = 1;
|
|
|
|
asan_init_is_running = false;
|
|
|
|
|
2013-10-18 15:57:59 +08:00
|
|
|
if (flags()->atexit)
|
|
|
|
Atexit(asan_atexit);
|
|
|
|
|
2014-12-26 20:32:32 +08:00
|
|
|
InitializeCoverage(common_flags()->coverage, common_flags()->coverage_dir);
|
|
|
|
|
|
|
|
// Now that ASan runtime is (mostly) initialized, deactivate it if
|
|
|
|
// necessary, so that it can be re-activated when requested.
|
|
|
|
if (flags()->start_deactivated)
|
|
|
|
AsanDeactivate();
|
2013-11-15 15:18:15 +08:00
|
|
|
|
2013-10-18 15:57:59 +08:00
|
|
|
// interceptors
|
2013-05-29 21:09:44 +08:00
|
|
|
InitTlsSize();
|
|
|
|
|
2013-03-21 19:23:41 +08:00
|
|
|
// Create main thread.
|
2014-12-06 01:31:13 +08:00
|
|
|
AsanThread *main_thread = AsanThread::Create(
|
|
|
|
/* start_routine */ nullptr, /* arg */ nullptr, /* parent_tid */ 0,
|
|
|
|
/* stack */ nullptr, /* detached */ true);
|
|
|
|
CHECK_EQ(0, main_thread->tid());
|
2013-03-21 19:23:41 +08:00
|
|
|
SetCurrentThread(main_thread);
|
2014-12-05 08:10:15 +08:00
|
|
|
main_thread->ThreadStart(internal_getpid(),
|
|
|
|
/* signal_thread_is_registered */ nullptr);
|
2011-12-28 08:59:39 +08:00
|
|
|
force_interface_symbols(); // no-op.
|
2014-02-11 21:38:57 +08:00
|
|
|
SanitizerInitializeUnwinder();
|
2011-11-30 09:07:02 +08:00
|
|
|
|
2016-05-19 19:21:34 +08:00
|
|
|
#if CAN_SANITIZE_LEAKS
|
|
|
|
__lsan::InitCommonLsan();
|
|
|
|
if (common_flags()->detect_leaks && common_flags()->leak_check_at_exit) {
|
|
|
|
Atexit(__lsan::DoLeakCheck);
|
2013-05-22 01:56:45 +08:00
|
|
|
}
|
2016-05-19 19:21:34 +08:00
|
|
|
#endif // CAN_SANITIZE_LEAKS
|
2013-05-21 22:15:35 +08:00
|
|
|
|
2015-04-02 06:42:36 +08:00
|
|
|
#if CAN_SANITIZE_UB
|
|
|
|
__ubsan::InitAsPlugin();
|
|
|
|
#endif
|
|
|
|
|
2014-12-06 04:26:09 +08:00
|
|
|
InitializeSuppressions();
|
|
|
|
|
2016-05-19 19:21:34 +08:00
|
|
|
{
|
|
|
|
#if CAN_SANITIZE_LEAKS
|
2016-05-18 21:00:20 +08:00
|
|
|
// LateInitialize() calls dlsym, which can allocate an error string buffer
|
|
|
|
// in the TLS. Let's ignore the allocation to avoid reporting a leak.
|
|
|
|
__lsan::ScopedInterceptorDisabler disabler;
|
2016-05-19 19:21:34 +08:00
|
|
|
#endif
|
2016-05-18 21:00:20 +08:00
|
|
|
Symbolizer::LateInitialize();
|
|
|
|
}
|
2016-05-12 21:11:03 +08:00
|
|
|
|
2013-12-05 20:04:51 +08:00
|
|
|
VReport(1, "AddressSanitizer Init done\n");
|
2011-11-30 09:07:02 +08:00
|
|
|
}
|
2014-01-16 20:31:50 +08:00
|
|
|
|
|
|
|
// Initialize as requested from some part of ASan runtime library (interceptors,
|
|
|
|
// allocator, etc).
|
|
|
|
void AsanInitFromRtl() {
|
|
|
|
AsanInitInternal();
|
|
|
|
}
|
|
|
|
|
2014-04-01 21:16:30 +08:00
|
|
|
#if ASAN_DYNAMIC
|
|
|
|
// Initialize runtime in case it's LD_PRELOAD-ed into unsanitized executable
|
2015-06-04 15:23:09 +08:00
|
|
|
// (and thus normal initializers from .preinit_array or modules haven't run).
|
2014-04-01 21:16:30 +08:00
|
|
|
|
|
|
|
class AsanInitializer {
|
|
|
|
public: // NOLINT
|
|
|
|
AsanInitializer() {
|
2014-11-25 15:10:30 +08:00
|
|
|
AsanInitFromRtl();
|
2014-04-01 21:16:30 +08:00
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
static AsanInitializer asan_initializer;
|
|
|
|
#endif // ASAN_DYNAMIC
|
|
|
|
|
2015-10-01 08:22:21 +08:00
|
|
|
} // namespace __asan
|
2014-01-16 20:31:50 +08:00
|
|
|
|
|
|
|
// ---------------------- Interface ---------------- {{{1
|
|
|
|
using namespace __asan; // NOLINT
|
|
|
|
|
|
|
|
void NOINLINE __asan_handle_no_return() {
|
|
|
|
int local_stack;
|
|
|
|
AsanThread *curr_thread = GetCurrentThread();
|
|
|
|
uptr PageSize = GetPageSizeCached();
|
2015-07-23 05:58:31 +08:00
|
|
|
uptr top, bottom;
|
|
|
|
if (curr_thread) {
|
|
|
|
top = curr_thread->stack_top();
|
|
|
|
bottom = ((uptr)&local_stack - PageSize) & ~(PageSize - 1);
|
|
|
|
} else {
|
|
|
|
// If we haven't seen this thread, try asking the OS for stack bounds.
|
|
|
|
uptr tls_addr, tls_size, stack_size;
|
|
|
|
GetThreadStackAndTls(/*main=*/false, &bottom, &stack_size, &tls_addr,
|
|
|
|
&tls_size);
|
|
|
|
top = bottom + stack_size;
|
|
|
|
}
|
2014-01-16 20:31:50 +08:00
|
|
|
static const uptr kMaxExpectedCleanupSize = 64 << 20; // 64M
|
|
|
|
if (top - bottom > kMaxExpectedCleanupSize) {
|
|
|
|
static bool reported_warning = false;
|
|
|
|
if (reported_warning)
|
|
|
|
return;
|
|
|
|
reported_warning = true;
|
|
|
|
Report("WARNING: ASan is ignoring requested __asan_handle_no_return: "
|
|
|
|
"stack top: %p; bottom %p; size: %p (%zd)\n"
|
|
|
|
"False positive error reports may follow\n"
|
|
|
|
"For details see "
|
2015-12-05 01:37:40 +08:00
|
|
|
"https://github.com/google/sanitizers/issues/189\n",
|
2014-01-16 20:31:50 +08:00
|
|
|
top, bottom, top - bottom, top - bottom);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
PoisonShadow(bottom, top - bottom, 0);
|
2015-07-23 05:58:31 +08:00
|
|
|
if (curr_thread && curr_thread->has_fake_stack())
|
2014-01-16 20:31:50 +08:00
|
|
|
curr_thread->fake_stack()->HandleNoReturn();
|
|
|
|
}
|
|
|
|
|
|
|
|
void NOINLINE __asan_set_death_callback(void (*callback)(void)) {
|
2014-12-16 07:02:57 +08:00
|
|
|
SetUserDieCallback(callback);
|
2014-01-16 20:31:50 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
// Initialize as requested from instrumented application code.
|
|
|
|
// We use this call as a trigger to wake up ASan from deactivated state.
|
|
|
|
void __asan_init() {
|
|
|
|
AsanActivate();
|
|
|
|
AsanInitInternal();
|
|
|
|
}
|
2015-07-23 18:55:13 +08:00
|
|
|
|
|
|
|
void __asan_version_mismatch_check() {
|
|
|
|
// Do nothing.
|
|
|
|
}
|