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Like r367463, but for asan/tests
llvm-svn: 367559
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to reflect the new license.
We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.
Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.
llvm-svn: 351636
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Summary: Refer to D32194 for the context.
Reviewers: eugenis
Subscribers: kubamracek, llvm-commits
Differential Revision: https://reviews.llvm.org/D32303
llvm-svn: 300886
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Summary:
On PowerPC and ARM (possibly, need to verify), couple tests involving
pthread_exit fail due to leaks detected by LSan. pthread_exit tries
to perform unwinding that leads to dlopen'ing libgcc_s.so. dlopen
mallocs "libgcc_s.so" string which confuses LSan, it fails to
realize that this allocation happens in dynamic linker and should
be ignored.
Symbolized leak report is required to define a suppression for this
known problem.
Reviewers: eugenis
Subscribers: aemerson, rengolin, kubamracek, llvm-commits
Differential Revision: https://reviews.llvm.org/D32194
Turn symbolization on for PPC and Thumb only to do not slow down other platforms.
llvm-svn: 300748
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macOS <=10.10)
This fixes https://llvm.org/bugs/show_bug.cgi?id=30285. On macOS 10.10 and lower, instrumented unit tests still need to be able to re-exec to make interceptors work.
Differential Revision: https://reviews.llvm.org/D24699
llvm-svn: 288224
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On OS X 10.11+, we have "automatic interceptors", so we don't need to use DYLD_INSERT_LIBRARIES when launching instrumented programs. However, non-instrumented programs that load TSan late (e.g. via dlopen) are currently broken, as TSan will still try to initialize, but the program will crash/hang at random places (because the interceptors don't work). This patch adds an explicit check that interceptors are working, and if not, it aborts and prints out an error message suggesting to explicitly use DYLD_INSERT_LIBRARIES.
TSan unit tests run with a statically linked runtime, where interceptors don't work. To avoid aborting the process in this case, the patch replaces `DisableReexec()` with a weak `ReexecDisabled()` function which is defined to return true in unit tests.
Differential Revision: http://reviews.llvm.org/D18212
llvm-svn: 263695
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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
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Looks like this commit is deadlocking the ASAN tests on the green dragon bot
(http://lab.llvm.org:8080/green/job/clang-stage1-cmake-RA/).
llvm-svn: 252076
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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: 251577
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This reverts commit 251447.
(Which caused failures on a Linux bot.)
llvm-svn: 251467
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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
llvm-svn: 251447
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This sets the default ASan flags to abort_on_error=1 on OS X. For unit tests and lit tests we set ASAN_OPTIONS back to abort_on_error=0 before running the tests (to avoid crashing). I added two tests that intentionally don't respect the default ASAN_OPTIONS to test the behavior of an empty ASAN_OPTIONS (on OS X we should crash, on Linux we should exit()).
Differential Revision: http://reviews.llvm.org/D7203
llvm-svn: 243418
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ASan unit tests don't depend on the symbolizer and they never test its output, but currently they still run it for every crash. This patch simply disables the symbolizer for unit tests, which provides some speed up. On my system (OS X) that's about 1.4x faster, but this could be potentially much more e.g. when using atos on OS X.
Differential Revision: http://reviews.llvm.org/D11353
llvm-svn: 242677
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llvm-svn: 166104
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