forked from OSchip/llvm-project
7afdc89c20
Several `#if SANITIZER_LINUX && !SANITIZER_ANDROID` guards are replaced with the more appropriate `#if SANITIZER_GLIBC` (the headers are glibc extensions, not specific to Linux (i.e. if we ever support GNU/kFreeBSD or Hurd, the guards may automatically work)). Several `#if SANITIZER_LINUX && !SANITIZER_ANDROID` guards are refined with `#if SANITIZER_GLIBC` (the definitions are available on Linux glibc, but may not be available on other libc (e.g. musl) implementations). This patch makes `ninja asan cfi lsan msan stats tsan ubsan xray` build on a musl based Linux distribution (apk install musl-libintl) Notes about disabled interceptors for musl: * `SANITIZER_INTERCEPT_GLOB`: musl does not implement `GLOB_ALTDIRFUNC` (GNU extension) * Some ioctl structs and functions operating on them. * `SANITIZER_INTERCEPT___PRINTF_CHK`: `_FORTIFY_SOURCE` functions are GNU extension * `SANITIZER_INTERCEPT___STRNDUP`: `dlsym(RTLD_NEXT, "__strndup")` errors so a diagnostic is formed. The diagnostic uses `write` which hasn't been intercepted => SIGSEGV * `SANITIZER_INTERCEPT_*64`: the `_LARGEFILE64_SOURCE` functions are glibc specific. musl does something like `#define pread64 pread` * Disabled `msg_iovlen msg_controllen cmsg_len` checks: musl is conforming while many implementations (Linux/FreeBSD/NetBSD/Solaris) are non-conforming. Since we pick the glibc definition, exclude the checks for musl (incompatible sizes but compatible offsets) Pass through LIBCXX_HAS_MUSL_LIBC to make check-msan/check-tsan able to build libc++ (https://bugs.llvm.org/show_bug.cgi?id=48618). Many sanitizer features are available now. ``` % ninja check-asan (known issues: * ASAN_OPTIONS=fast_unwind_on_malloc=0 odr-violations hangs ) ... Testing Time: 53.69s Unsupported : 185 Passed : 512 Expectedly Failed: 1 Failed : 12 % ninja check-ubsan check-ubsan-minimal check-memprof # all passed % ninja check-cfi ( all cross-dso/) ... Testing Time: 8.68s Unsupported : 264 Passed : 80 Expectedly Failed: 8 Failed : 32 % ninja check-lsan (With GetTls (D93972), 10 failures) Testing Time: 4.09s Unsupported: 7 Passed : 65 Failed : 22 % ninja check-msan (Many are due to functions not marked unsupported.) Testing Time: 23.09s Unsupported : 6 Passed : 764 Expectedly Failed: 2 Failed : 58 % ninja check-tsan Testing Time: 23.21s Unsupported : 86 Passed : 295 Expectedly Failed: 1 Failed : 25 ``` Used `ASAN_OPTIONS=verbosity=2` to verify there is no unneeded interceptor. Partly based on Jari Ronkainen's https://reviews.llvm.org/D63785#1921014 Note: we need to place `_FILE_OFFSET_BITS` above `#include "sanitizer_platform.h"` to avoid `#define __USE_FILE_OFFSET64 1` in 32-bit ARM `features.h` Reviewed By: vitalybuka Differential Revision: https://reviews.llvm.org/D93848 |
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|---|---|---|
| .. | ||
| scripts | ||
| tests | ||
| .clang-format | ||
| CMakeLists.txt | ||
| README.txt | ||
| asan.syms.extra | ||
| asan_activation.cpp | ||
| asan_activation.h | ||
| asan_activation_flags.inc | ||
| asan_allocator.cpp | ||
| asan_allocator.h | ||
| asan_blacklist.txt | ||
| asan_debugging.cpp | ||
| asan_descriptions.cpp | ||
| asan_descriptions.h | ||
| asan_errors.cpp | ||
| asan_errors.h | ||
| asan_fake_stack.cpp | ||
| asan_fake_stack.h | ||
| asan_flags.cpp | ||
| asan_flags.h | ||
| asan_flags.inc | ||
| asan_fuchsia.cpp | ||
| asan_globals.cpp | ||
| asan_globals_win.cpp | ||
| asan_init_version.h | ||
| asan_interceptors.cpp | ||
| asan_interceptors.h | ||
| asan_interceptors_memintrinsics.cpp | ||
| asan_interceptors_memintrinsics.h | ||
| asan_interceptors_vfork.S | ||
| asan_interface.inc | ||
| asan_interface_internal.h | ||
| asan_internal.h | ||
| asan_linux.cpp | ||
| asan_lock.h | ||
| asan_mac.cpp | ||
| asan_malloc_linux.cpp | ||
| asan_malloc_local.h | ||
| asan_malloc_mac.cpp | ||
| asan_malloc_win.cpp | ||
| asan_mapping.h | ||
| asan_mapping_myriad.h | ||
| asan_mapping_sparc64.h | ||
| asan_memory_profile.cpp | ||
| asan_new_delete.cpp | ||
| asan_poisoning.cpp | ||
| asan_poisoning.h | ||
| asan_posix.cpp | ||
| asan_preinit.cpp | ||
| asan_premap_shadow.cpp | ||
| asan_premap_shadow.h | ||
| asan_report.cpp | ||
| asan_report.h | ||
| asan_rtems.cpp | ||
| asan_rtl.cpp | ||
| asan_scariness_score.h | ||
| asan_shadow_setup.cpp | ||
| asan_stack.cpp | ||
| asan_stack.h | ||
| asan_stats.cpp | ||
| asan_stats.h | ||
| asan_suppressions.cpp | ||
| asan_suppressions.h | ||
| asan_thread.cpp | ||
| asan_thread.h | ||
| asan_win.cpp | ||
| asan_win_dll_thunk.cpp | ||
| asan_win_dynamic_runtime_thunk.cpp | ||
| asan_win_weak_interception.cpp | ||
| weak_symbols.txt | ||
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