[sanitizer] Add MemCpyAccessible (#112794)

A layer over `TryMemCpy` to copy only available pages.

[Sanitizer] Call Die() instead of Abort() when failed to reserve shadow memory range (#107833)

I grep the code and find that `Abort()` is only called in `Die()` when
the flag `abort_on_error` is se

[Sanitizer] Call Die() instead of Abort() when failed to reserve shadow memory range (#107833)

I grep the code and find that `Abort()` is only called in `Die()` when
the flag `abort_on_error` is set.
Thus, if reserving shadow memory range fails, `Die()` rather than
`Abort()` should be called. In this case, the flag `abort_on_error` will
be respected and the die callbacks will be called.

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[sanitizer] Suggest checking ulimit -d in addition to ulimit -v (#98625)

Since Linux 4.7, RLIMIT_DATA may result in mmap() returning ENOMEM.
Example:

$ clang -fsanitize=address -o hello hell

[sanitizer] Suggest checking ulimit -d in addition to ulimit -v (#98625)

Since Linux 4.7, RLIMIT_DATA may result in mmap() returning ENOMEM.
Example:

$ clang -fsanitize=address -o hello hello.c
$ ulimit -d 100000
$ ./hello
==3349007==ERROR: AddressSanitizer failed to allocate 0x10000000
(268435456) bytes at address 7fff7000 (errno: 12)
==3349007==ReserveShadowMemoryRange failed while trying to map
0x10000000 bytes. Perhaps you're using ulimit -v

Suggest checking ulimit -d in addition to ulimit -v.

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[sanitizer] Rename DEFINE_REAL_PTHREAD_FUNCTIONS (#96527)

We use REAL() calls in interceptors, but
DEFINE_REAL_PTHREAD_FUNCTIONS has nothing to do
with them and only used for internal maintenance

[sanitizer] Rename DEFINE_REAL_PTHREAD_FUNCTIONS (#96527)

We use REAL() calls in interceptors, but
DEFINE_REAL_PTHREAD_FUNCTIONS has nothing to do
with them and only used for internal maintenance
threads.

This is done to avoid confusion like in #96456.

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[NFC][sanitizer] Replace a few AppendF with Append

[NFC][sanitizer] Rename InternalScopedString::append to AppendF (#66558)

Prepare to introduce trivial InternalScopedString::Append(const char*).

[test][msan] Add test for dc4d9d6

sanitizer: use pragma clang conditionally

Use the pragma only when __clang__ is defined.

Fixes:
sanitizer_common_libcdep.cpp:101: warning: ignoring ‘#pragma clang diagnostic’ [-Wunknown-pragmas]

D

sanitizer: use pragma clang conditionally

Use the pragma only when __clang__ is defined.

Fixes:
sanitizer_common_libcdep.cpp:101: warning: ignoring ‘#pragma clang diagnostic’ [-Wunknown-pragmas]

Differential Revision: https://reviews.llvm.org/D124829

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sanitizer_common: make internal/external headers compatible

This is a follow up to 4f3f4d672254
("sanitizer_common: fix __sanitizer_get_module_and_offset_for_pc signature mismatch")
which fixes a si

sanitizer_common: make internal/external headers compatible

This is a follow up to 4f3f4d672254
("sanitizer_common: fix __sanitizer_get_module_and_offset_for_pc signature mismatch")
which fixes a similar problem for msan build.

I am getting the following error compiling a unit test for code that
uses sanitizer_common headers and googletest transitively includes
sanitizer interface headers:

In file included from third_party/gwp_sanitizers/singlestep_test.cpp:3:
In file included from sanitizer_common/sanitizer_common.h:19:
sanitizer_interface_internal.h:41:5: error: typedef redefinition with different types
('struct __sanitizer_sandbox_arguments' vs 'struct __sanitizer_sandbox_arguments')
} __sanitizer_sandbox_arguments;
common_interface_defs.h:39:3: note: previous definition is here
} __sanitizer_sandbox_arguments;

Reviewed By: melver

Differential Revision: https://reviews.llvm.org/D119546

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[sanitizer] Fix compress_stack_depot.cpp test on Darwin

All platforms which can start the thread should stop it as well.

[asan] Run background thread for asan only on THUMB

As in D114934, or lsan crashes on the same bot.

[sanitizer] Run Stack compression in background thread

Depends on D114495.

Reviewed By: dvyukov

Differential Revision: https://reviews.llvm.org/D114498

Revert "[sanitizer] Run Stack compression in background thread"

This reverts commit e5c2a46c5e8fc038b9f6c898df9628f9524dc10e as this
change introduced a linker error when building sanitizer runtimes

Revert "[sanitizer] Run Stack compression in background thread"

This reverts commit e5c2a46c5e8fc038b9f6c898df9628f9524dc10e as this
change introduced a linker error when building sanitizer runtimes:

ld.lld: error: undefined symbol: __sanitizer::internal_start_thread(void* (*)(void*), void*)
>>> referenced by sanitizer_stackdepot.cpp:133 (compiler-rt/lib/sanitizer_common/sanitizer_stackdepot.cpp:133)
>>> compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonSymbolizer.x86_64.dir/sanitizer_stackdepot.cpp.obj:(__sanitizer::(anonymous namespace)::CompressThread::NewWorkNotify())

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Revert "[asan] Run background thread for asan only on THUMB"

This reverts commit 5c27740238007d22f2d0cd0ebe2aaffa90a9c92b.

Reverting due to Windows build issue:

sanitizer_stackdepot.cpp.obj : erro

Revert "[asan] Run background thread for asan only on THUMB"

This reverts commit 5c27740238007d22f2d0cd0ebe2aaffa90a9c92b.

Reverting due to Windows build issue:

sanitizer_stackdepot.cpp.obj : error LNK2005: "void __cdecl __sanitizer::StackDepotStopBackgroundThread(void)" (?StackDepotStopBackgroundThread@__sanitizer@@YAXXZ) already defined in sanitizer_common_libcdep.cpp.obj
LINK : fatal error LNK1181: cannot open input file 'projects\compiler-rt\lib\asan\CMakeFiles\RTAsan_dynamic.x86_64.dir\asan_rtl_x86_64.S.obj'

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[sanitizer] Run Stack compression in background thread

Depends on D114495.

Reviewed By: dvyukov

Differential Revision: https://reviews.llvm.org/D114498

[asan] Run background thread for asan only on THUMB

As in D114934, or lsan crashes on the same bot.

[NFC][sanitizer] Move/rename macro into sanitizer_platform.h

Folloup for D114934

[sanitizer] Restore __thumb__ workaround

It was removed in D114934 and failed clang-thumbv7-full-2stage.

[sanitizer] Support IsRssLimitExceeded in all sanitizers

Reviewed By: kstoimenov

Differential Revision: https://reviews.llvm.org/D115000

[NFC][sanitizer] Remove SetSoftRssLimitExceededCallback

According comments on D44404, something like that was the goal.

Reviewed By: morehouse, kstoimenov

Differential Revision: https://reviews.ll

[NFC][sanitizer] Remove SetSoftRssLimitExceededCallback

According comments on D44404, something like that was the goal.

Reviewed By: morehouse, kstoimenov

Differential Revision: https://reviews.llvm.org/D114991

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[NFC][sanitizer] Reorder functions in cpp file

[sanitizer] Start background thread once

Reviewed By: morehouse

Differential Revision: https://reviews.llvm.org/D114933

[NFC][sanitizer] Return StackDepotStats by value

Differential Revision: https://reviews.llvm.org/D110644

[NFC][sanitizer] Clang-format some code

[asan] Remove Asan, Ubsan support of RTEMS and Myriad

Differential Revision: https://reviews.llvm.org/D104279