[compiler-rt] [ASan] Prevent ASan/LSan deadlock by preloading modules before error reporting (PR #131756)

Wed Apr 16 13:49:48 PDT 2025

mysterymath wrote:

This is causing a build failure on the Fuchsia CI bots: 

https://luci-milo.appspot.com/ui/p/fuchsia/builders/toolchain.ci/clang-linux-x64/b8717476228399426513/overview

There could be something wrong with the CMake plumbing; unsure why this symbol is undefined. Do you have an intuition for what's going wrong?

```
[2435/2474](3) Linking CXX shared library /b/s/w/ir/x/w/llvm_build/lib/clang/21/lib/x86_64-unknown-fuchsia/libclang_rt.asan.so
FAILED: /b/s/w/ir/x/w/llvm_build/lib/clang/21/lib/x86_64-unknown-fuchsia/libclang_rt.asan.so 
: && /b/s/w/ir/x/w/llvm_build/./bin/clang++ --target=x86_64-unknown-fuchsia --sysroot=/b/s/w/ir/x/w/sdk/arch/x64/sysroot -fPIC --target=x86_64-unknown-fuchsia -I/b/s/w/ir/x/w/sdk/pkg/sync/include -I/b/s/w/ir/x/w/sdk/pkg/fdio/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported -ffunction-sections -fdata-sections -ffile-prefix-map=/b/s/w/ir/x/w/llvm_build/runtimes/runtimes-x86_64-unknown-fuchsia-bins=../../../llvm-llvm-project -ffile-prefix-map=/b/s/w/ir/x/w/llvm-llvm-project/= -no-canonical-prefixes -Wall -Wno-unused-parameter -O2 -g -DNDEBUG  -L/b/s/w/ir/x/w/sdk/arch/x64/lib  -fuse-ld=lld   -nodefaultlibs -Wl,-z,text -Wl,-z,defs -nostdlib++ -Wl,--version-script,/b/s/w/ir/x/w/llvm_build/runtimes/runtimes-x86_64-unknown-fuchsia-bins/compiler-rt/lib/asan/clang_rt.asan-dynamic-x86_64.vers -shared -Wl,-soname,libclang_rt.asan.so -o /b/s/w/ir/x/w/llvm_build/lib/clang/21/lib/x86_64-unknown-fuchsia/libclang_rt.asan.so compiler-rt/lib/interception/CMakeFiles/RTInterception.x86_64.dir/interception_linux.cpp.obj compiler-rt/lib/interception/CMakeFiles/RTInterception.x86_64.dir/interception_mac.cpp.obj compiler-rt/lib/interception/CMakeFiles/RTInterception.x86_64.dir/interception_win.cpp.obj compiler-rt/lib/interception/CMakeFiles/RTInterception.x86_64.dir/interception_type_test.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_allocator.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_common.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_deadlock_detector1.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_deadlock_detector2.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_errno.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_file.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_flags.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_flag_parser.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_fuchsia.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_haiku.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_libc.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_libignore.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_linux.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_linux_s390.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_mac.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_mutex.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_netbsd.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_platform_limits_freebsd.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_platform_limits_linux.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_platform_limits_netbsd.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_platform_limits_posix.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_platform_limits_solaris.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_posix.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_printf.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_procmaps_common.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_procmaps_bsd.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_procmaps_fuchsia.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_procmaps_haiku.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_procmaps_linux.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_procmaps_mac.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_procmaps_solaris.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_range.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_solaris.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_stoptheworld_fuchsia.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_stoptheworld_mac.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_stoptheworld_win.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_suppressions.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_tls_get_addr.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_thread_arg_retval.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_thread_registry.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_type_traits.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_win.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_win_interception.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.x86_64.dir/sanitizer_termination.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonLibc.x86_64.dir/sanitizer_common_libcdep.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonLibc.x86_64.dir/sanitizer_allocator_checks.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonLibc.x86_64.dir/sanitizer_dl.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonLibc.x86_64.dir/sanitizer_linux_libcdep.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonLibc.x86_64.dir/sanitizer_mac_libcdep.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonLibc.x86_64.dir/sanitizer_posix_libcdep.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonLibc.x86_64.dir/sanitizer_stoptheworld_linux_libcdep.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonLibc.x86_64.dir/sanitizer_stoptheworld_netbsd_libcdep.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonCoverage.x86_64.dir/sancov_flags.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonCoverage.x86_64.dir/sanitizer_coverage_fuchsia.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonCoverage.x86_64.dir/sanitizer_coverage_libcdep_new.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonCoverage.x86_64.dir/sanitizer_coverage_win_sections.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonSymbolizer.x86_64.dir/sanitizer_allocator_report.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonSymbolizer.x86_64.dir/sanitizer_chained_origin_depot.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonSymbolizer.x86_64.dir/sanitizer_stack_store.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonSymbolizer.x86_64.dir/sanitizer_stackdepot.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonSymbolizer.x86_64.dir/sanitizer_stacktrace.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonSymbolizer.x86_64.dir/sanitizer_stacktrace_libcdep.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonSymbolizer.x86_64.dir/sanitizer_stacktrace_printer.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonSymbolizer.x86_64.dir/sanitizer_stacktrace_sparc.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonSymbolizer.x86_64.dir/sanitizer_symbolizer.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonSymbolizer.x86_64.dir/sanitizer_symbolizer_libbacktrace.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonSymbolizer.x86_64.dir/sanitizer_symbolizer_libcdep.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonSymbolizer.x86_64.dir/sanitizer_symbolizer_mac.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonSymbolizer.x86_64.dir/sanitizer_symbolizer_markup.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonSymbolizer.x86_64.dir/sanitizer_symbolizer_markup_fuchsia.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonSymbolizer.x86_64.dir/sanitizer_symbolizer_posix_libcdep.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonSymbolizer.x86_64.dir/sanitizer_symbolizer_report.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonSymbolizer.x86_64.dir/sanitizer_symbolizer_report_fuchsia.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonSymbolizer.x86_64.dir/sanitizer_symbolizer_win.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonSymbolizer.x86_64.dir/sanitizer_thread_history.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonSymbolizer.x86_64.dir/sanitizer_unwind_linux_libcdep.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonSymbolizer.x86_64.dir/sanitizer_unwind_fuchsia.cpp.obj compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonSymbolizer.x86_64.dir/sanitizer_unwind_win.cpp.obj compiler-rt/lib/lsan/CMakeFiles/RTLSanCommon.x86_64.dir/lsan_common.cpp.obj compiler-rt/lib/lsan/CMakeFiles/RTLSanCommon.x86_64.dir/lsan_common_fuchsia.cpp.obj compiler-rt/lib/lsan/CMakeFiles/RTLSanCommon.x86_64.dir/lsan_common_linux.cpp.obj compiler-rt/lib/lsan/CMakeFiles/RTLSanCommon.x86_64.dir/lsan_common_mac.cpp.obj compiler-rt/lib/ubsan/CMakeFiles/RTUbsan.x86_64.dir/ubsan_diag.cpp.obj compiler-rt/lib/ubsan/CMakeFiles/RTUbsan.x86_64.dir/ubsan_init.cpp.obj compiler-rt/lib/ubsan/CMakeFiles/RTUbsan.x86_64.dir/ubsan_flags.cpp.obj compiler-rt/lib/ubsan/CMakeFiles/RTUbsan.x86_64.dir/ubsan_handlers.cpp.obj compiler-rt/lib/ubsan/CMakeFiles/RTUbsan.x86_64.dir/ubsan_monitor.cpp.obj compiler-rt/lib/ubsan/CMakeFiles/RTUbsan.x86_64.dir/ubsan_value.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_allocator.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_activation.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_debugging.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_descriptions.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_errors.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_fake_stack.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_flags.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_fuchsia.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_globals.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_globals_win.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_interceptors.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_interceptors_memintrinsics.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_linux.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_mac.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_malloc_linux.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_malloc_mac.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_malloc_win.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_memory_profile.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_poisoning.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_posix.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_premap_shadow.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_report.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_rtl.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_shadow_setup.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_stack.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_stats.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_suppressions.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_thread.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_win.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_interceptors_vfork.S.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_new_delete.cpp.obj compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic_version_script_dummy.x86_64.dir/dummy.cpp.obj compiler-rt/lib/ubsan/CMakeFiles/RTUbsan_cxx.x86_64.dir/ubsan_handlers_cxx.cpp.obj compiler-rt/lib/ubsan/CMakeFiles/RTUbsan_cxx.x86_64.dir/ubsan_type_hash.cpp.obj compiler-rt/lib/ubsan/CMakeFiles/RTUbsan_cxx.x86_64.dir/ubsan_type_hash_itanium.cpp.obj compiler-rt/lib/ubsan/CMakeFiles/RTUbsan_cxx.x86_64.dir/ubsan_type_hash_win.cpp.obj -L/b/s/w/ir/x/w/llvm_build/lib/x86_64-unknown-fuchsia -lunwind  -lc  -lzircon  -ldl  -lrt  -lm  -lpthread  /b/s/w/ir/x/w/llvm_build/lib/clang/21/lib/x86_64-unknown-fuchsia/libclang_rt.builtins.a  /b/s/w/ir/x/w/llvm_build/lib/x86_64-unknown-fuchsia/libc++abi.so.1.0  -lc  /b/s/w/ir/x/w/llvm_build/lib/x86_64-unknown-fuchsia/libunwind.so.1.0 && :
ld.lld: error: undefined symbol: __sanitizer::Symbolizer::GetRefreshedListOfModules()
>>> referenced by asan_report.cpp:152 (../../../llvm-llvm-project/compiler-rt/lib/asan/asan_report.cpp:152)
>>>               compiler-rt/lib/asan/CMakeFiles/RTAsan_dynamic.x86_64.dir/asan_report.cpp.obj:(__asan::ScopedInErrorReport::ScopedInErrorReport(bool))
clang++: error: ld.lld command failed with exit code 1 (use -v to see invocation)
```

https://github.com/llvm/llvm-project/pull/131756