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llvm-project/compiler-rt/lib/asan
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Evgeniy Stepanov e109ef854a Release memory to OS only when the requested range covers the entire page 
Summary:
The current code was sometimes attempting to release huge chunks of
memory due to undesired RoundUp/RoundDown interaction when the requested
range is fully contained within one memory page.

Reviewers: eugenis

Subscribers: kubabrecka, llvm-commits

Patch by Aleksey Shlyapnikov.

Differential Revision: https://reviews.llvm.org/D27228

llvm-svn: 288271
2016-11-30 20:41:59 +00:00
..
scripts
[asan] Fix asan-rt bitness issues in asan_device_setup on Android.
2016-11-08 00:59:58 +00:00
tests
[asan] Allow re-exec in instrumented unit tests on Darwin (fix unit tests on macOS <=10.10)
2016-11-30 00:46:04 +00:00
.clang-format
Tell clang-format that (most) sanitizers are written using Google style guide.
2015-11-19 22:11:10 +00:00
asan_activation_flags.inc
Return memory to OS right after free (not in the async thread).
2016-11-29 00:22:50 +00:00
asan_activation.cc
Return memory to OS right after free (not in the async thread).
2016-11-29 00:22:50 +00:00
asan_activation.h
[ASan] Change activation strategy.
2014-12-19 20:35:53 +00:00
asan_allocator.cc
Return memory to OS right after free (not in the async thread).
2016-11-29 00:22:50 +00:00
asan_allocator.h
Return memory to OS right after free (not in the async thread).
2016-11-29 00:22:50 +00:00
asan_blacklist.txt
…
asan_debugging.cc
[asan] Add a new AddressDescription structure, which can describe any type of address.
2016-09-09 20:43:20 +00:00
asan_descriptions.cc
[asan] Fix GlobalAddressDescription::Print()
2016-09-20 20:33:18 +00:00
asan_descriptions.h
[asan] Reify ErrorGeneric
2016-09-21 20:18:18 +00:00
asan_errors.cc
[asan] Provide bug descriptions for all reports (not just ErrorGeneric)
2016-11-28 21:18:15 +00:00
asan_errors.h
[asan] Provide bug descriptions for all reports (not just ErrorGeneric)
2016-11-28 21:18:15 +00:00
asan_fake_stack.cc
fix random typos [NFC]
2016-08-05 18:49:08 +00:00
asan_fake_stack.h
fix random typos [NFC]
2016-08-05 18:49:08 +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
[asan] Add a "dump_registers" flag to print out CPU registers after a SIGSEGV
2016-11-26 00:50:08 +00:00
asan_globals_win.cc
[asan/win] Check assumptions about the incremental linker more
2016-11-23 18:02:16 +00:00
asan_globals_win.h
[asan] Create a .ASAN$G(A-Z) section for global registration
2016-11-17 19:02:53 +00:00
asan_globals.cc
[asan/win] Skip incremental linker padding during unregistration
2016-11-23 18:28:04 +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
[compiler-rt] Fix CHECK coding style [NFC]
2016-08-03 15:47:40 +00:00
asan_interceptors.h
[asan] Add __strdup interceptor.
2016-04-20 22:45:23 +00:00
asan_interface_internal.h
[compiler-rt] Add support for the dynamic shadow allocation
2016-09-30 17:47:34 +00:00
asan_internal.h
[asan] Reify ErrorDeadlySignal
2016-09-08 12:58:15 +00:00
asan_linux.cc
[asan] Add exception handler to map memory on demand on Win64.
2016-07-11 21:40:59 +00:00
asan_lock.h
…
asan_mac.cc
[asan] Add exception handler to map memory on demand on Win64.
2016-07-11 21:40:59 +00:00
asan_malloc_linux.cc
[asan, msan] Fix reallocation logic when IsInDlsymAllocPool(ptr) is true.
2016-09-26 08:11:21 +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
Fix _recalloc redefinition link error in ASan RTL
2016-10-11 23:13:13 +00:00
asan_mapping.h
[asan] Reapply: Switch to using dynamic shadow offset on iOS
2016-10-05 20:33:59 +00:00
asan_memory_profile.cc
[asan] minor fix in the asan memory profile
2016-08-23 18:13:51 +00:00
asan_new_delete.cc
[asan] Add C++17 aligned new/delete entrypoints. Patch by Jakub Jelinek, see https://reviews.llvm.org/D24771
2016-09-20 21:27:10 +00:00
asan_poisoning.cc
Release memory to OS only when the requested range covers the entire page
2016-11-30 20:41:59 +00:00
asan_poisoning.h
Release memory to OS only when the requested range covers the entire page
2016-11-30 20:41:59 +00:00
asan_posix.cc
[asan] Handle SIGBART signal description. (found by buildbot)
2016-09-08 13:28:26 +00:00
asan_preinit.cc
[asan] Revert r221882.
2014-11-14 13:02:28 +00:00
asan_report.cc
[asan] Provide bug descriptions for all reports (not just ErrorGeneric)
2016-11-28 21:18:15 +00:00
asan_report.h
[asan] Add a new AddressDescription structure, which can describe any type of address.
2016-09-09 20:43:20 +00:00
asan_rtl.cc
[asan] Refactor shadow memory initialization out of AsanInitInternal [NFC]
2016-11-28 21:40:41 +00:00
asan_scariness_score.h
Split ScarinessScore between its "storage" (POD), and an initializing object.
2016-08-30 17:08:47 +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
[LSAN] Fix test swapcontext.cc on MIPS
2016-05-18 06:09:26 +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
[scan-build] fix logic error warning emitted on compiler-rt code base
2016-05-02 19:07:20 +00:00
asan_suppressions.h
[asan] add suppressions for odr violations
2015-02-25 00:49:12 +00:00
asan_thread.cc
[ASAN] Pass previous stack information through __sanitizer_finish_switch_fiber
2016-09-28 12:28:16 +00:00
asan_thread.h
[ASAN] Pass previous stack information through __sanitizer_finish_switch_fiber
2016-09-28 12:28:16 +00:00
asan_win_dll_thunk.cc
[asan] Create a .ASAN$G(A-Z) section for global registration
2016-11-17 19:02:53 +00:00
asan_win_dynamic_runtime_thunk.cc
[asan] Create a .ASAN$G(A-Z) section for global registration
2016-11-17 19:02:53 +00:00
asan_win.cc
[asan] Create a .ASAN$G(A-Z) section for global registration
2016-11-17 19:02:53 +00:00
asan.syms.extra
…
CMakeLists.txt
[asan/win] Fix incremental linking vs. global registration
2016-11-23 17:37:00 +00:00
README.txt
[ASan] Fix the links to bugs and wikipages.
2015-12-04 17:37:40 +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