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llvm-project/compiler-rt/lib/asan
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Marcin Koscielnicki b7b5ac60c4 [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
 		2016-04-27 17:42:00 +00:00
..
scripts For the asan_symbolize.py script, use addr2line as the default system 2015-12-29 21:36:34 +00:00
tests Move -fms-compatibility-version=19 into target cflags 2016-03-22 01:14:36 +00:00
.clang-format Tell clang-format that (most) sanitizers are written using Google style guide. 2015-11-19 22:11:10 +00:00
CMakeLists.txt [cmake] Address Samsonov's post-commit review of r262723 2016-03-05 10:01:04 +00:00
README.txt [ASan] Fix the links to bugs and wikipages. 2015-12-04 17:37:40 +00:00
asan.syms.extra [ASan] ASan can be combined with LSan and UBSan, so export symbol from them as well. 2013-10-23 15:36:22 +00:00
asan_activation.cc [sanitizier] initializing common flags. 2016-03-21 20:53:20 +00:00
asan_activation.h [ASan] Change activation strategy. 2014-12-19 20:35:53 +00:00
asan_activation_flags.inc [asan] Allow changing verbosity in activation flags. 2015-01-20 13:21:20 +00:00
asan_allocator.cc [asan] Prefer alloc-dealloc-mismatch to new-delete-type-mismatch. 2016-04-13 21:04:27 +00:00
asan_allocator.h [asan] Intercept all Heap* related imports from ucrtbase.dll 2016-03-24 20:19:48 +00:00
asan_blacklist.txt Ignore stack-buffer-overflow in std::_Find_elem<*> / std::num_get<...>::_Getifld 2014-05-07 14:40:23 +00:00
asan_debugging.cc [compiler-rt] Apply modernize-use-nullptr fixes in sanitizers 2015-10-01 00:22:21 +00:00
asan_fake_stack.cc [compiler-rt] Fix build (again) by wrapping lines to 80 chars (NFC) 2015-10-01 02:15:40 +00:00
asan_fake_stack.h Revert "Apply modernize-use-default to compiler-rt." 2015-10-30 18:52:31 +00:00
asan_flags.cc [sanitizer] Add strchr* to the common interceptors 2016-03-21 21:36:17 +00:00
asan_flags.h [Sanitizer] Change InitializeFlags() signatures. NFC. 2015-02-12 00:36:42 +00:00
asan_flags.inc [sanitizer] Add memset, memmove, and memcpy to the common interceptors 2016-03-25 19:33:45 +00:00
asan_globals.cc [asan] Add runtime support for __asan_(un)register_image_globals 2016-03-28 20:28:17 +00:00
asan_init_version.h [asan] Add runtime support for __asan_(un)register_image_globals 2016-03-28 20:28:17 +00:00
asan_interceptors.cc [asan] Add __strdup interceptor. 2016-04-20 22:45:23 +00:00
asan_interceptors.h [asan] Add __strdup interceptor. 2016-04-20 22:45:23 +00:00
asan_interface_internal.h [asan] Add runtime support for __asan_(un)register_image_globals 2016-03-28 20:28:17 +00:00
asan_internal.h [asan] Add runtime support for __asan_(un)register_image_globals 2016-03-28 20:28:17 +00:00
asan_linux.cc [asan] Add runtime support for __asan_(un)register_image_globals 2016-03-28 20:28:17 +00:00
asan_lock.h asan/tsan: move blocking mutex from asan to sanitizer_common 2013-01-14 07:51:39 +00:00
asan_mac.cc [asan] Add runtime support for __asan_(un)register_image_globals 2016-03-28 20:28:17 +00:00
asan_malloc_linux.cc [Sanitizer] Pass proper values to DTLS_on_libc_memalign. 2016-01-14 00:04:37 +00:00
asan_malloc_mac.cc [ASan] Retire mac_ignore_invalid_free, remove some dead code. 2015-12-04 16:17:55 +00:00
asan_malloc_win.cc [asan] Intercept all Heap* related imports from ucrtbase.dll 2016-03-24 20:19:48 +00:00
asan_mapping.h [asan] Remove redundant elif 2016-02-02 22:05:47 +00:00
asan_new_delete.cc [asan] Export new and delete operators on Windows 2016-03-23 20:45:52 +00:00
asan_poisoning.cc [ASan] Fix the links to bugs and wikipages. 2015-12-04 17:37:40 +00:00
asan_poisoning.h Add descriptive names to sanitizer entries in /proc/self/maps. Helps debugging. 2015-05-29 22:31:28 +00:00
asan_posix.cc [asan] [SystemZ] Add slop for stack address detection. 2016-04-18 09:01:19 +00:00
asan_preinit.cc [asan] Revert r221882. 2014-11-14 13:02:28 +00:00
asan_report.cc [sanitizers] [NFC] Add defines for the various PowerPC ABIs. 2016-04-26 18:44:13 +00:00
asan_report.h [asan] Prefer alloc-dealloc-mismatch to new-delete-type-mismatch. 2016-04-13 21:04:27 +00:00
asan_rtl.cc [sanitizer] [SystemZ] Abort if the kernel might be vulnerable to CVE-2016-2143. 2016-04-27 17:42:00 +00:00
asan_scariness_score.h [asan] fix the Windows build (MSVC says: cannot specify explicit initializer for arrays) 2016-02-08 19:33:36 +00:00
asan_stack.cc [ASan] Allow to atomically modify malloc_context_size at runtime. 2014-12-16 01:23:03 +00:00
asan_stack.h Revert "[LSAN] Fix test swapcontext.cc on MIPS" 2016-04-22 14:56:30 +00:00
asan_stats.cc [ASan] Clean up obsolete stats. 2015-06-26 19:18:02 +00:00
asan_stats.h [ASan] Clean up obsolete stats. 2015-06-26 19:18:02 +00:00
asan_suppressions.cc [sanitizer] use simpler symbolizer interface (GetModuleNameForPc) where applicable 2015-03-05 01:30:36 +00:00
asan_suppressions.h [asan] add suppressions for odr violations 2015-02-25 00:49:12 +00:00
asan_thread.cc [LSan] Use __tls_get_addr interceptor to keep track of dynamic TLS. 2016-01-14 18:50:09 +00:00
asan_thread.h [LSan] Use __tls_get_addr interceptor to keep track of dynamic TLS. 2016-01-14 18:50:09 +00:00
asan_win.cc [asan] Add runtime support for __asan_(un)register_image_globals 2016-03-28 20:28:17 +00:00
asan_win_dll_thunk.cc [asan] Intercept strdup on Windows 2016-03-22 00:52:47 +00:00
asan_win_dynamic_runtime_thunk.cc Wrap 81 character line to satisfy linter 2016-03-22 00:53:04 +00:00

README.txt 

AddressSanitizer RT
================================
This directory contains sources of the AddressSanitizer (ASan) runtime library.

Directory structure:
README.txt       : This file.
Makefile.mk      : File for make-based build.
CMakeLists.txt   : File for cmake-based build.
asan_*.{cc,h}    : Sources of the asan runtime library.
scripts/*        : Helper scripts.
tests/*          : ASan unit tests.

Also ASan runtime needs the following libraries:
lib/interception/      : Machinery used to intercept function calls.
lib/sanitizer_common/  : Code shared between various sanitizers.

ASan runtime currently also embeds part of LeakSanitizer runtime for
leak detection (lib/lsan/lsan_common.{cc,h}).

ASan runtime can only be built by CMake. You can run ASan tests
from the root of your CMake build tree:

make check-asan

For more instructions see:
https://github.com/google/sanitizers/wiki/AddressSanitizerHowToBuild