On OS X, `memchr` is called on a newly created thread even before `__tsan_thread_start_func` is invoked, which means that the ThreadState object for that thread will not yet be initialized. Let's add `COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED` into the interceptor to simply call `internal_memchr` in these cases.
Differential Revision: http://reviews.llvm.org/D14283
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@251935 91177308-0d34-0410-b5e6-96231b3b80d8
This patch moves a few functions from `sanitizer_linux_libcdep.cc` to `sanitizer_posix_libcdep.cc` in order to use them on OS X as well. Plus a few more small build fixes.
This is part of an effort to port TSan to OS X, and it's one the very first steps. Don't expect TSan on OS X to actually work or pass tests at this point.
Differential Revision: http://reviews.llvm.org/D14235
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@251918 91177308-0d34-0410-b5e6-96231b3b80d8
This patch modifies `tsan_interceptors.cc` to be buildable on OS X. Several of the intercepted methods are not available on OS X, so we need to `#if !SANITIZER_MAC` them. Plus a few other fixes, e.g. `pthread_yield` doesn't exist, let's use `internal_sched_yield` instead.
This is part of an effort to port TSan to OS X, and it's one the very first steps. Don't expect TSan on OS X to actually work or pass tests at this point.
Differential Revision: http://reviews.llvm.org/D14237
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@251916 91177308-0d34-0410-b5e6-96231b3b80d8
Hi, this patch adds a CMake flag called `COMPILER_RT_ENABLE_TSAN_OSX`, which is off by default. If enabled, the build system will be building the OS X version of the TSan runtime library (called `libclang_rt.tsan_osx_dynamic.dylib`). I'll submit patches that fix OS X build errors shortly.
This is part of an effort to port TSan to OS X, and it's one the very first steps. Don't expect TSan on OS X to actually work or pass tests at this point.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@251915 91177308-0d34-0410-b5e6-96231b3b80d8
This reverts commit r250823.
Replacing at least some of empty
constructors with "= default" variants is a semantical change which we
don't want. E.g. __tsan::ClockBlock contains a union of large arrays,
and it's critical for correctness and performance that we don't memset()
these arrays in the constructor.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@251717 91177308-0d34-0410-b5e6-96231b3b80d8
Define WIN32_LEAN_AND_MEAN before including Windows.h. This is already being
done in some places. This does it more broadly. This permits building ASAN on
Linux for Winndows, as well as reduces the amount of included declarations.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@251649 91177308-0d34-0410-b5e6-96231b3b80d8
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.)
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@251577 91177308-0d34-0410-b5e6-96231b3b80d8
app_process32, when started via a shell script wrapper, needs a
different security context to satisty SELinux.
Patch by Abhishek Arya.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@251572 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
I have othen been stuck when I got an ASAN report, but no symbols
are resolved. The reasons might be different, and it always
requires a bit of detective work to track down.
These more verbose error messages will help the users like me.
Reviewers: samsonov
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D14135
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@251553 91177308-0d34-0410-b5e6-96231b3b80d8
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
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@251447 91177308-0d34-0410-b5e6-96231b3b80d8
This will tag all mmapped memory sanitizers use with "Performance tool data"
when viewed in vmmap. (Even though sanitizers are not performance tools, it's
the best available match and better than having the unidentified objects.)
http://reviews.llvm.org/D13609
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@251445 91177308-0d34-0410-b5e6-96231b3b80d8
This patch fixes the ptrace interceptor for aarch64. The PTRACE_GETREGSET
ptrace syscall with with invalid memory might zero the iovec::iov_base
field and then masking the subsequent check after the syscall (since it
will be 0 and it will not trigger an invalid access). The fix is to copy
the value on a local variable and use its value on the checks.
The patch also adds more coverage on the Linux/ptrace.cc testcase by addding
check for PTRACE_GETREGSET for both general and floating registers (aarch64
definitions added only).
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@251331 91177308-0d34-0410-b5e6-96231b3b80d8
This patch enables the ptrace syscall interceptors for arm and adds support
for both PTRACE_GETVFPREGS and PTRACE_SETVFPREGS used to get the VFP register
from ARM.
The ptrace tests is also updated with arm and PTRACE_GETVFPREGS tests.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@251321 91177308-0d34-0410-b5e6-96231b3b80d8
This patch add support for leak sanitizer for aarch64. Similar to
MIPS it uses a SizeClassAllocator32 due VMA constraints (aarch64
currently supports 39 and 42-bit VMA).
It also fixes the android build issue.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@250898 91177308-0d34-0410-b5e6-96231b3b80d8
This patch introduces a well defined header struct
to represent raw profile header instead of using raw array.
Previously the raw array is used in two different files and
is very error prone when header structure is re-organized.
This is a small cleanup with NFC.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@250561 91177308-0d34-0410-b5e6-96231b3b80d8
