The safestack overflow.c test is currently failing on an aarch64
buildbot with a segfault, but it is currently passing on other
configuration.
This patch silent the issue for now on aarch64 by setting to all
supported architectures the 'stable-runtime' configure and set
the test to requires it.
llvm-svn: 255491
This patch enables the safestack for aarch64. The frontend already have
it enabled on all supported architectures and no adjustment is required
in llvm.
The compiler-rt adjustments are basically add on the cmake configuration
to enable the tests and fix the pagesize debug check by getting its
value at runtime (since aarch64 has multiple pagesize depending of
kernel configuration).
llvm-svn: 255345
Add a test case to cover profile dumping of functions with no
value sites, functions with value sites but no dynamic VP data,
and functions with runtime VP data.
llvm-svn: 255327
Value profile runtime depends on libc which breaks
buffer API implemenation with current file organization.
Test case is also updated to check more symbols.
llvm-svn: 255294
check_memcpy test added in r254959 fails on some configurations due to
memcpy() calls inserted by Clang. Try harder to avoid them by using
internal_memcpy() where applicable.
llvm-svn: 255287
InstrProfiling.h file declares profile runtime public APIs.
It has become a dumping place for many different things, which
needs cleanups. In this change, core type declarations and
portability macros are moved to a new file InstrProfilingPort.h.
llvm-svn: 255270
Some targets (e.g. Mips) don't have 64-bit atomics, so using atomic_uint64_t
leads to build failures. Use atomic_uintptr_t to avoid such errors.
Patch by Max Ostapenko.
llvm-svn: 255242
This allows the profile runtime to pick the right impl
for cmp&swap for a given target.
Differential Revision: http://reviews.llvm.org/D15248
llvm-svn: 255173
Summary:
Rather than having to add new "experimental" options each time someone wants to work on bringing a sanitizer to a new platform, this patch makes options for all of them.
The default values for the options are set by the platform checks that would have enabled them, but they can be overridden on or off.
Reviewers: kubabrecka, samsonov
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D14846
llvm-svn: 255170
Summary:
Android doesn't have __libc_malloc and related allocation
functions. As its dynamic linker doesn't use malloc, so
we can use REAL(malloc) to replace __libc_malloc safely.
Reviewers: kcc, eugenis, dvyukov
Subscribers: llvm-commits, tberghammer, danalbert, srhines
Differential Revision: http://reviews.llvm.org/D15297
llvm-svn: 255167
msse3 is a target dependent flag and must be guarded as check_cxx_compiler_flag()
checks only for compiler error messages and ignores warnings. Earlier COMPILER_RT_HAS_MSSE3_FLAG
is set to "TRUE" for all targets as clang emits warnings and the compilation spits unnecessary
warnings for non-X86 targets. This issue is fixed by coupling the flag with "-Werror"
Differential Revision: http://reviews.llvm.org/D15362
llvm-svn: 255165
MSVC apparently makes atexit available even without including stdlib.h,
but clang-cl does not. This makes the file build also with clang-cl.
llvm-svn: 255160
check_memcpy test added in r254959 fails on some configurations due to
memset() calls inserted by Clang. Try harder to avoid them:
* Explicitly use internal_memset() instead of empty braced-initializer.
* Replace "new T()" with "new T", as the former generates zero-initialization
for structs in C++11.
llvm-svn: 255136
Let unrecoverable handlers be responsbile for killing the
program with Die(), and let functions which print the error
report know if it's going to happen. Re-write the comments to
describe the situation.
llvm-svn: 255081
Currently, this is an NFC. However, knowing out the kind of error
report before we bring up all the reporting machinery (implemented in
ScopedReport class) is important once we teach UBSan runtime
suppressions.
llvm-svn: 255074
This patch provides the assembly support for setjmp/longjmp for use
with the thread sanitizer. This is a big more complicated than for
aarch64, because sibcalls are only legal under our ABIs if the TOC
pointer is unchanged. Since the true setjmp function trashes the TOC
pointer, and we have to leave the stack in a correct state, we emulate
the setjmp function rather than branching to it.
We also need to materialize the TOC for cases where the _setjmp code
is called from libc. This is done differently under the ELFv1 and
ELFv2 ABIs.
llvm-svn: 255059
This patch is by Simone Atzeni with portions by Adhemerval Zanella.
This contains the LLVM patches to enable the thread sanitizer for
PPC64, both big- and little-endian. Two different virtual memory
sizes are supported: Old kernels use a 44-bit address space, while
newer kernels require a 46-bit address space.
There are two companion patches that will be added shortly. There is
a Clang patch to actually turn on the use of the thread sanitizer for
PPC64. There is also a patch that I wrote to provide interceptor
support for setjmp/longjmp on PPC64.
Patch discussion at reviews.llvm.org/D12841.
llvm-svn: 255057
Summary:
It was barely supported for a several years for now, somewhat
rotten and doesn't correspond to the way we build/test TSan runtime
in Clang anymore.
CMake build has proper compile flags, library layout, build
dependencies etc.
Shell scripts that depended on the output of Makefile.old are
either obsolete now (check_cmake.sh), or moved to lit tests
(check_memcpy.sh), or kept as a standalone scripts not suitable
for generic test suite, but invoked on bots (check_analyze.sh).
It is not used on bots anymore: all "interesting" configurations
(gcc/clang as a host compiler; debug/release build types) are now
tested via CMake.
Reviewers: dvyukov, kcc
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D15316
llvm-svn: 255032
Another attempt at fixing tsan_invisible_barrier.
Current implementation causes:
https://llvm.org/bugs/show_bug.cgi?id=25643
There were several unsuccessful iterations for this functionality:
Initially it was implemented in user code using REAL(pthread_barrier_wait). But pthread_barrier_wait is not supported on MacOS. Futexes are linux-specific for this matter.
Then we switched to atomics+usleep(10). But usleep produced parasitic "as-if synchronized via sleep" messages in reports which failed some output tests.
Then we switched to atomics+sched_yield. But this produced tons of tsan- visible events, which lead to "failed to restore stack trace" failures.
Move implementation into runtime and use internal_sched_yield in the wait loop.
This way tsan should see no events from the barrier, so not trace overflows and
no "as-if synchronized via sleep" messages.
llvm-svn: 255030
This patch adds release and acquire semantics for dispatch groups, plus a test case.
Differential Revision: http://reviews.llvm.org/D15048
llvm-svn: 255020
The memcmp interceptor checks COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED only after it calls COMMON_INTERCEPTOR_ENTER, which causes an early process launch crash when running TSan in iOS simulator. Let's fix this by checking COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED as the very first thing in the interceptor.
Differential Revision: http://reviews.llvm.org/D15287
llvm-svn: 255019
Check that TSan runtime doesn't contain compiler-inserted calls
to memset/memmove functions.
In future, we may consider moving this test to test/sanitizer_common,
as we don't want to have compiler-inserted memcpy/memmove calls in
any sanitizer runtime.
llvm-svn: 254955
De-hardcode path to TSan-ified executable: pass it as an input to
the scripts. Fix them so that they don't write to the current
directory. Remove their invocation from Makefile.old: they are
broken there anyway, as check_analyze.sh now matches trunk Clang.
llvm-svn: 254936
This script is superseded by lit test suite integrated into CMake
for quite a while now. It doesn't support many tests, and require
custom hacks for a few other.
llvm-svn: 254932
This option builds TSan runtime with extra debug printfs
and stats collection. This build configuration is developer-only
and should rarely be used, but we need to keep it to make sure
it doesn't bitrot.
llvm-svn: 254818
System properties are not accessible through NDK (we've been using
hacks to get to them) and they are unavailable during ASan
initialization in .preinit_array. Use environment variables and
files instead (ex. ASAN_OPTIONS=include_if_exists=/path).
No test changes. This feature was not tested because the properties
are system-wide and would conflict with the parallel test runner. Yet
another reason to get rid of it.
llvm-svn: 254783
mac_ignore_invalid_free was helpful when ASan runtime used to intercept
CFAllocator and sometimes corrupted its memory. This behavior had been long
gone, and the flag was unused.
This patch also deletes ReportMacCfReallocUnknown(), which was used by the
CFAllocator realloc() wrapper.
llvm-svn: 254722
and -no-integrated-as for source with static function.
The compiler generates assembly names containing \" in the
.s dump causing gnu assembler to complain. That issue will be
investigated separately.
llvm-svn: 254705
cmp&swap is not well supported -- the new test
case triggers some assembler error.
This is a partial fix to the general problem (lack
of atomics operation support for certain targets).
llvm-svn: 254701
With the latest refactoring and code sharing patches landed,
it is possible to unify the value profile implementation between
raw and indexed profile. This is part in prfofile runtime.
Differential Revision: http://reviews.llvm.org/D15057
llvm-svn: 254678
* Adds COMPILER_RT_EXTERNALIZE_DEBUGINFO option
* On Darwin this results in calling dsymutil and strip after linking
* This generates an error on non-darwin platforms, matching the LLVM behavior
llvm-svn: 254643
`MaybeReexec` contains a 1024-byte long local array, which produces a warning about frame size:
.../lib/sanitizer_common/sanitizer_mac.cc:548:6: warning: stack frame size of 1132 bytes in function '__sanitizer::MaybeReexec' [-Wframe-larger-than=]
Let's replace it with InternalScopedString.
Differential Revision: http://reviews.llvm.org/D15181
llvm-svn: 254619
For OS X builds of compiler-rt, we run `darwin_test_archs` to determine which architectures can the toolchain target. This detection takes quite a long time, and the result is always the same (as long as you don't upgrade your OS, system headers or toolchain). Let's cache the result.
Differential Revision: http://reviews.llvm.org/D15179
llvm-svn: 254618
On OS X, there are other-than-pthread locking APIs that are used quite extensively - OSSpinLock and os_lock_lock. Let's add interceptors for those.
Differential Revision: http://reviews.llvm.org/D14987
llvm-svn: 254611
Second attempt to enable building ThreadSanitizer (and running tests) on OS X by default.
Differential Revision: http://reviews.llvm.org/D15109
llvm-svn: 254603
In mmap_large.cc, let's use MAP_ANON instead of MAP_ANONYMOUS, because MAP_ANONYMOUS is only available on OS X 10.11 and later.
Differential Revision: http://reviews.llvm.org/D15180
llvm-svn: 254601
In AddressSanitizer, we have the MaybeReexec method to detect when we're running without DYLD_INSERT_LIBRARIES (in which case interceptors don't work) and re-execute with the environment variable set. On OS X 10.11+, this is no longer necessary, but to have ThreadSanitizer supported on older versions of OS X, let's use the same method as well. This patch moves the implementation from `asan/` into `sanitizer_common/`.
Differential Revision: http://reviews.llvm.org/D15123
llvm-svn: 254600
If the top-level cmake has a custom make specified through -DCMAKE_MAKE_PROGRAM
then this must be passed along to the sub-build processes in compiler-rt or the
build process will fail.
llvm-svn: 254509
si_int is already defined in sysroot's siginfo.h
emutls.c includes pthread.h which includes asm/siginfo.h which
in turn includes asm-generic/siginfo.h and that defines si_int.
si_int is also defined in builtin's int_types.h and this leads to
errors. This patch fixes the issue by undefining the si_int in int_types.h
Differential Revision: http://reviews.llvm.org/D15086
llvm-svn: 254472
For the build set up which runs the unit tests using an emulator like QEMU,
the unit tests must be run using %run.
Differential Revision: http://reviews.llvm.org/D15081
llvm-svn: 254467
This patch adds release and acquire semantics for libdispatch semaphores and a test case.
Differential Revision: http://reviews.llvm.org/D14992
llvm-svn: 254412
Calloc interceptor initially allocates memory from temp buffer (to serve dlsyms called during asan_init). There is a chance that some non-instrumented library (or executable) has allocated memory with calloc before asan_init and got pointer from the same temporary buffer which later caused problems with free.
Inspired by https://github.com/google/sanitizers/issues/626
Differential Revision: http://reviews.llvm.org/D14979
llvm-svn: 254395
This patch complete removed SANITIZER_AARCH64_VMA definition and usage.
AArch64 ports now supports runtime VMA detection and instrumentation
for 39 and 42-bit VMA.
It also Rewrite print_address to take a variadic argument list
(the addresses to print) and adjust the tests which uses it to the new
signature.
llvm-svn: 254319
On OS X, in AtosSymbolizer, if the answer from atos doesn't contain module name, let's bail and return false. There are some cases where this is beneficial, because we'll try DlAddrSymbolizer next (it's next in the symbolizer chain), which might be able to symbolize something that atos couldn't.
Differential Revision: http://reviews.llvm.org/D15071
llvm-svn: 254301
Changing comments that have references to code.google.com to point to GitHub instead, because the current links are not redirected properly (they instead redirect to different issues, mostly ASan). NFC.
Differential Revision: http://reviews.llvm.org/D15053
llvm-svn: 254300
1) There's a few wrongly defined things in tsan_interceptors.cc,
2) a typo in tsan_rtl_amd64.S which calls setjmp instead of sigsetjmp in the interceptor, and
3) on OS X, accessing an mprotected page results in a SIGBUS (and not SIGSEGV).
Differential Revision: http://reviews.llvm.org/D15052
llvm-svn: 254299
On OS X, for weak function (that user can override by providing their own implementation in the main binary), we need extern `"C" SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE NOINLINE`.
Fixes a broken test case on OS X, java_symbolization.cc, which uses a weak function __tsan_symbolize_external.
Differential Revision: http://reviews.llvm.org/D14907
llvm-svn: 254298
build errors on ARM. Define it internally to avoid such errors.
Patch by Max Ostapenko.
Differential Revision: http://reviews.llvm.org/D14921
llvm-svn: 254292
Serial queues need extra happens-before between individual tasks executed in the same queue. This patch adds `Acquire(queue)` before the executed task and `Release(queue)` just after it (for serial queues only). Added a test case.
Differential Revision: http://reviews.llvm.org/D15011
llvm-svn: 254229
This patch ports the assembly file tsan_rtl_amd64.S to OS X, where we need several changes:
* Some assembler directives are not available on OS X (.hidden, .type, .size)
* Symbol names need to start with an underscore (added a ASM_TSAN_SYMBOL macro for that).
* To make the interceptors work, we ween to name the function "_wrap_setjmp" (added ASM_TSAN_SYMBOL_INTERCEPTOR for that).
* Calling the original setjmp is done with a simple "jmp _setjmp".
* __sigsetjmp doesn't exist on OS X.
Differential Revision: http://reviews.llvm.org/D14947
llvm-svn: 254228
There's a few more lit tests that require features not available on OS X (MAP_32BIT, pthread_setname_np), let's mark them with "UNSUPPORTED: darwin".
Differential Revision: http://reviews.llvm.org/D14923
llvm-svn: 254225
Pthread spinlocks are not available on OS X and this test doesn't really require a spinlock.
Differential Revision: http://reviews.llvm.org/D14949
llvm-svn: 254224
When a race on file descriptors is detected, `FindThreadByUidLocked()` is called to retrieve ThreadContext with a specific unique_id. However, this ThreadContext might not exist in the thread registry anymore (it may have been recycled), in which case `FindThreadByUidLocked` will cause an assertion failure in `GetThreadLocked`. Adding a test case that reproduces this, producing:
FATAL: ThreadSanitizer CHECK failed: sanitizer_common/sanitizer_thread_registry.h:92 "((tid)) < ((n_contexts_))" (0x34, 0x34)
This patch fixes this by replacing the loop with `FindThreadContextLocked`.
Differential Revision: http://reviews.llvm.org/D14984
llvm-svn: 254223
This patch reorganize the platform specific mapping information to
export the application mask on a external variable. This exported
variable will be used by intrumentation phase to create code to be
used on architecture with multiple VMA range.
The patch creates a new header, dfsan_platform.h, and move all the
mapping information and also create function accessors to the
mapping value.
Also for aarch64 it initialize application exported mask to the
value based on runtime VMA detection.
llvm-svn: 254197
This patch unify the 39 and 42-bit support for AArch64 by using an external
memory read to check the runtime detected VMA and select the better mapping
and transformation. Although slower, this leads to same instrumented binary
to be independent of the kernel.
Along with this change this patch also fix some 42-bit failures with
ALSR disable by increasing the upper high app memory threshold and also
the 42-bit madvise value for non large page set.
llvm-svn: 254151
Summary:
In r251553, I added a warning that proved to be super noisy,
especially in case of MSan. Removing it for now, and I will
probably add some additional diagnostics for symbolizer, when
I better understand how to make it properly.
Reviewers: eugenis
Differential Revision: http://reviews.llvm.org/D14998
llvm-svn: 254102
Due to a typo, atos-symbolizer-dyld-root-path.cc is currently being skipped all the time. There's a few more typos/copy-paste-errors. Let's fix them and enable this test.
Differential Revision: http://reviews.llvm.org/D14951
llvm-svn: 254058
This patch adds some fixes for MSAN with libc++ for aarch64:
1. Adds the libmsan_loadable name for aarch64.
2. Fixes some pthread_attr_setstacksize for aarch64, since glibc sets
the mininum stack size to be higher than the x86_64 default (16KB
vs 128KB).
3. Fixes a swprintf null char constant definition.
llvm-svn: 254015
We need to intercept libdispatch APIs (dispatch_sync, dispatch_async, etc.) to add synchronization between the code that submits the task and the code that gets executed (possibly on a different thread). This patch adds release+acquire semantics for dispatch_sync, and dispatch_async (plus their "_f" and barrier variants). The synchronization is done on malloc'd contexts (separate for each submitted block/callback). Added tests to show usage of dispatch_sync and dispatch_async, for cases where we expect no warnings and for cases where TSan finds races.
Differential Revision: http://reviews.llvm.org/D14745
llvm-svn: 253982
The test relies on two variables in different frames to end up being on the same address. For some reason, this isn't true on OS X. This patch adds `__attribute__((aligned(64)))` to the variables, which actually makes the variables occupy the same address. This is still not a guarantee, but it's more likely to work (the test looks very fragile already).
Differential Revision: http://reviews.llvm.org/D14925
llvm-svn: 253981
Pthread semaphores are not available on OS X. Let's replace sem_wait/sem_post with barrier_wait, which makes the test pass on OS X. I know that sem_wait/sem_post is intercepted by TSan, whereas barrier_wait is TSan-invisible, but the purpose of the test is not affected by this.
Also, let's properly initialize the mutex and cond variables.
Differential Revision: http://reviews.llvm.org/D14924
llvm-svn: 253980
On OS X, interceptors don't work in unit tests, so calloc() calls the system allocator. We need to use user_calloc() instead.
Differential Revision: http://reviews.llvm.org/D14918
llvm-svn: 253979
On OS X, __thread variables are lazily heap-allocated (with malloc). Therefore, they're recognized as heap blocks (which is what they are) and not as TLS variables in TSan reports. Figuring out if a heap block is a TLS or not is difficult (in malloc interceptor we could analyze the caller and then mark the object), so let's instead modify the tests so that we expect the report to say "Location is heap block" instead of "Location is TLS".
Differential Revision: http://reviews.llvm.org/D14873
llvm-svn: 253858
This patch fixes the __cxa_guard_acquire, __cxa_guard_release and __cxa_guard_abort interceptors on OS X. They apparently work on Linux just by having the same name, but on OS X, we actually need to use TSAN_INTERCEPTOR.
Differential Revision: http://reviews.llvm.org/D14868
llvm-svn: 253776
We need to call the intercepted version of pthread_detach. Secondly, PTHREAD_CREATE_JOINABLE and PTHREAD_CREATE_DETACHED are not 0 and 1 on OS X, so we need to properly pass these constants and not just a bool.
Differential Revision: http://reviews.llvm.org/D14837
llvm-svn: 253775
The tsan_test_util_posix.cc implementation of mutexes call pthread APIs directly, which on OS X don't end up calling the intercepted versions and we miss the synchronization. This patch changes the unit tests to directly call the intercepted versions. This fixes several test failures on OS X.
Differential Revision: http://reviews.llvm.org/D14835
llvm-svn: 253774
(patch suggested by silvas)
With this patch, the IO information is wrapped in struct
ProfDataIOVec, and interface of writerCallback takes a vector
of IOVec and a pointer to writer context pointer.
Differential Revision: http://reviews.llvm.org/D14859
llvm-svn: 253764
This test checks if we can print a backtrace from the death callback. On old
OS X versions, backtrace is not able to symbolicate the trace past the ASan
runtime because we build with -fomit-frame-pointer.
llvm-svn: 253729
There seems to be a problem in system header (stdint.h) of FreeBSD
where uint8_t nor uint16_t are defined. Explicitly define the key
types as done for FreeBSD i386.
llvm-svn: 253703
Value profile enumerator change to match LLVM code
ProfData new member field name change to match LLVM code
ProfData member type change to match LLVM code
Do not use lower case for types that are internal to implementation (not exposed to APIs)
There is no functional change. This is a preparation patch to enable more code sharing
in follow up patches
Differential Revision: http://reviews.llvm.org/D14841
llvm-svn: 253700
The Crash Report is going to add app specific info if it is stored in the magical buffer.
Differential Revision: http://reviews.llvm.org/D14791
llvm-svn: 253691
The compiler-rt should make use of strlcpy() rather than strncpy(). Using internal_strncpy() may be fine with appropriate bounds checking or enforcement of nul-termination elsewhere, but it's just good practice these days to avoid using strncpy() in new code.
A patch by Jeremy Sequoia!
Differential Revision: http://reviews.llvm.org/D14714
llvm-svn: 253690
[asan] On OS X, log reports to syslog and os_trace, has been reverted in r252076 due to deadlocks on earlier versions of OS X. Alexey has also noticed deadlocks in some corner cases on Linux. This patch, if applied on top of the logging patch (http://reviews.llvm.org/D13452), addresses the known deadlock issues.
(This also proactively removes the color escape sequences from the error report buffer since we have to copy the buffer anyway.)
Differential Revision: http://reviews.llvm.org/D14470
llvm-svn: 253689
When ASan currently detects a bug, by default it will only print out the text
of the report to stderr. This patch changes this behavior and writes the full
text of the report to syslog before we terminate the process. It also calls
os_trace (Activity Tracing available on OS X and iOS) with a message saying
that the report is available in syslog. This is useful, because this message
will be shown in the crash log.
For this to work, the patch makes sure we store the full report into
error_message_buffer unconditionally, and it also strips out ANSI escape
sequences from the report (they are used when producing colored reports).
I've initially tried to log to syslog during printing, which is done on Android
right now. The advantage is that if we crash during error reporting or the
produced error does not go through ScopedInErrorReport, we would still get a
(partial) message in the syslog. However, that solution is very problematic on
OS X. One issue is that the logging routine uses GCD, which may spawn a new
thread on its behalf. In many cases, the reporting logic locks threadRegistry,
which leads to deadlocks.
Reviewed at http://reviews.llvm.org/D13452
(In addition, add sanitizer_common_libcdep.cc to buildgo.sh to avoid
build failures on Linux.)
llvm-svn: 253688
MIPS build bots failed due to lack of 64bit atomic operations.
The fix is to disable VP for MIPS target until a better solution
is found.
llvm-svn: 253687
On Linux, we have internal_fork that forks without invoking user's pthread_atfork handlers, which is important for spawning external symbolizers. Let's implement this for OS X as well (using __fork). This patch also adds internal_forkpty which re-implements forkpty and uses __fork in it as well.
Differential Revision: http://reviews.llvm.org/D14869
llvm-svn: 253666
OS X doesn't support POSIX semaphores (but it does have the API for it, which returns ENOSYS - "Function not implemented").
Differential Revision: http://reviews.llvm.org/D14865
llvm-svn: 253665
On OS X, we don't have pthread spinlocks, let's just use a regular mutex instead. Secondly, pthread_rwlock_t is much larger (200 bytes), so `char padding_[64 - sizeof(pthread_rwlock_t)]` actually underflows.
Differential Revision: http://reviews.llvm.org/D14862
llvm-svn: 253659
Several tests rely on CLOCK_MONOTONIC, which doesn't exist on OS X. This patch fixes these tests by either disabling them (in case of cond_version.c which doesn't make sense on OS X), or by porting the test to also work on OS X.
Differential Revision: http://reviews.llvm.org/D14861
llvm-svn: 253658
Apparently check_c_compiler_flag isn't a thing everywhere. Not being
incredibly well-versed in cmake, I'm hoping that check_cxx_compiler_flag
serves a similar purpose. :)
llvm-svn: 253648
On OS X, this unit test (ThreadSpecificDtors) fails, because the new and delete operators actually call the overridden operators, which end up using TLVs and crash. Since C++'s new and delete is not important in this test, let's just replace them with a local variable. This fixes the test on OS X.
Differential Revision: http://reviews.llvm.org/D14826
llvm-svn: 253583
Summary:
Newer libstdc++ has global pool, which is filled with objects
allocated during libstdc++ initialization, and never released.
Using use_globals=0 in the lit tests results in these objects
being treated as leaks.
Fix this by porting several tests to plain C, and introducing
a simple sanity test case for __lsan::ScopedDisabler.
Reviewers: kcc, ygribov
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D14798
llvm-svn: 253576
On OS X, the thread finalization is fragile due to thread-local variables destruction order. I've seen cases where the we destroy the ThreadState too early and subsequent thread-local values' destructors call interceptors again. Let's replace the TLV-based thread finalization method with libpthread hooks. The notification PTHREAD_INTROSPECTION_THREAD_TERMINATE is called *after* all TLVs have been destroyed.
Differential Revision: http://reviews.llvm.org/D14777
llvm-svn: 253560
On OS X, we build a dylib of the TSan runtime, which doesn't necessarily need to contain debugging symbols (and file and line information), so llvm-symbolizer might not be able to find file names for TSan internal frames. FrameIsInternal currently only considers filenames, but we should simply treat all frames within `libclang_rt.tsan_osx_dynamic.dylib` as internal. This patch treats all modules starting with `libclang_rt.tsan_` as internal, because there may be more runtimes for other platforms in the future.
Differential Revision: http://reviews.llvm.org/D14813
llvm-svn: 253559
Several testcases need pthread barriers (e.g. all bench_*.cc which use test/tsan/bench.h) which are not available on OS X. Let's mark them with "UNSUPPORTED: darwin".
Differential Revision: http://reviews.llvm.org/D14636
llvm-svn: 253558
Reimplement dispatch_once in an interceptor to solve these issues that may produce false positives with TSan on OS X:
1) there is a racy load inside an inlined part of dispatch_once,
2) the fast path in dispatch_once doesn't perform an acquire load, so we don't properly synchronize the initialization and subsequent uses of whatever is initialized,
3) dispatch_once is already used in a lot of already-compiled code, so TSan doesn't see the inlined fast-path.
This patch uses a trick to avoid ever taking the fast path (by never storing ~0 into the predicate), which means the interceptor will always be called even from already-compiled code. Within the interceptor, our own atomic reads and writes are not written into shadow cells, so the race in the inlined part is not reported (because the accesses are only loads).
Differential Revision: http://reviews.llvm.org/D14811
llvm-svn: 253552
Summary:
dlopen(NULL, ...) is intended to give you back a handle to the
executable for use with dlsym. Casting it to link_map and using it with
ForEachMappedRegion results in a crash.
We also shouldn't unpoison the globals of a DSO that is already in
memory. This ensures that we don't do it for the executable, but in
general, MSan may have false negatives if the DSO is already loaded.
Reviewers: eugenis
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D14795
llvm-svn: 253530
1. Added missing public API decl in InstrProfiling.h
2. Clang formatting fix
3. Added more comments for new VP code
4. refactor the VP allocation code to make it more readable.
llvm-svn: 253508
This change adds extends the data structures and adds in the routines
for handling runtime calls for value profiling. The profile data format
is modified and the version number is incremented.
llvm-svn: 253483
Symbolizers can call malloc/realloc/free/..., which we don't want to intercept. This is already implemented on Linux, let's do it for OS X as well.
Differential Revision: http://reviews.llvm.org/D14710
llvm-svn: 253460
This patch adds assembly routines to enable setjmp/longjmp for aarch64
on linux. It fixes:
* test/tsan/longjmp2.cc
* test/tsan/longjmp3.cc
* test/tsan/longjmp4.cc
* test/tsan/signal_longjmp.cc
I also checked with perlbench from specpu2006 (it fails to run
with missing setjmp/longjmp intrumentation).
llvm-svn: 253205
- This is to handle a corner case where profile lib is linked
in but non of the modules are instrumented (On linux, since
we avoided the overhead to emit runtime hook use functions so
this is the side effect of that size optimization).
- Added a profile runtime test case to cover all scenarios of
shared library builds.
Differential Revision: http://reviews.llvm.org/D14468
llvm-svn: 253098
I noticed that when a symbol is named just "x", it gets demangled to "long long". On POSIX, AFAIK, mangled names always start with "_Z", so lets just require that.
Differential Revision: http://reviews.llvm.org/D14637
llvm-svn: 253080
Currently, we crash on finalization of detached threads, because we'll try to clear the ThreadState twice.
Differential Revision: http://reviews.llvm.org/D14644
llvm-svn: 253079
On OS X, memcpy and memmove are actually aliases of the same function, so the memmove interceptor can be invoked on a call to memcpy. This patch updates the tests to expect either memmove or memcpy on a stack trace.
Differential Revision: http://reviews.llvm.org/D14638
llvm-svn: 253077
The OS X symbolizers (namely AtosSymbolizer) don't return full file paths, only file names. This patch modifies `mutexset*.cc` tests not to require a path to be present in the symbol on the stack trace.
Differential Revision: http://reviews.llvm.org/D14642
llvm-svn: 253075
Adhemerval Zanella