Summary: We setup these interceptors twice which hangs test on windows.
Reviewers: eugenis
Subscribers: llvm-commits, kubabrecka
Differential Revision: https://reviews.llvm.org/D28070
llvm-svn: 290393
Summary: Make thread local quarantine size an option so it can be turned off to save memory.
Reviewers: eugenis
Patch by Alex Shlyapnikov.
Subscribers: kubabrecka, llvm-commits
Differential Revision: https://reviews.llvm.org/D28027
llvm-svn: 290373
Summary:
Warm up ASAN caches in ThreadedQuarantineTest to get more predictable
incremental heap memory usage measurements.
Reviewers: eugenis
Patch by Alex Shlyapnikov.
Subscribers: aemerson, kubabrecka, llvm-commits
Differential Revision: https://reviews.llvm.org/D28061
llvm-svn: 290371
Summary: This patch attempts to fix test patching-unpatching.cc . The new code flushes the instruction cache after modifying the program at runtime.
Reviewers: dberris, rengolin
Subscribers: llvm-commits, iid_iunknown, aemerson
Differential Revision: https://reviews.llvm.org/D27996
llvm-svn: 290354
Summary:
Experiments show that on Android the current values result in too much
of the memory consumption for all quarantined chunks.
Reviewers: kcc, eugenis
Subscribers: mgorny, danalbert, srhines, llvm-commits, kubabrecka
Patch by Aleksey Shlyapnikov.
Differential Revision: https://reviews.llvm.org/D27873
llvm-svn: 290218
Summary:
After rL289878/rL289881, the build on FreeBSD is broken, because
sanitizer_platform_limits_posix.cc attempts to include <utmp.h> and use
`struct utmp`, neither of which are supported anymore on FreeBSD.
Fix this by adding `&& !SANITIZER_FREEBSD` in a few places, and stop
intercepting utmp functions altogether for FreeBSD.
Reviewers: kubabrecka, emaste, eugenis, ed
Subscribers: ed, llvm-commits
Differential Revision: https://reviews.llvm.org/D27902
llvm-svn: 290167
In ASan, we have __asan_locate_address and __asan_get_alloc_stack, which is used in LLDB/Xcode to show the allocation backtrace for a heap memory object. This patch implements the same for TSan.
Differential Revision: https://reviews.llvm.org/D27656
llvm-svn: 290119
Missed a couple of files:
- Using #pragma once
- Missing top-matter for headers
- Missing an include for <cstdint>
Follow-up on D25360.
llvm-svn: 290079
Summary:
Getting rid of the distance number altogether because:
- a person knowledgeable enough to know what the message means will also
know how to do hexadecimal math (with the help of a calculator)
- numbers outside INT_MIN - INT_MAX are hard to comprehend anyway
This unbreaks the case when you dynamically link a library with XRay and
it exits pre-main() with a not very informative static string.
Author: pelikan
Reviewers: dberris
Subscribers: llvm-commits, mehdi_amini
Differential Revision: https://reviews.llvm.org/D27894
llvm-svn: 290074
projects/compiler-rt/lib/xray/xray_trampoline_x86_64.S:33:7: error: unexpected token in '.endm' directive
.endm SAVE_REGISTERS
^
projects/compiler-rt/lib/xray/xray_trampoline_x86_64.S:52:7: error: unexpected token in '.endm' directive
.endm RESTORE_REGISTERS
^
Remove the trailing name on the `.endm` which does not take the name of the
macro. This should bring the compiler-rt build bot back into working state.
llvm-svn: 289852
Summary:
With the recent changes to the Secondary, we use less bits for UnusedBytes,
which allows us in return to increase the bits used for Offset. That means
that we can use a Primary SizeClassMap allowing for a larger maximum size.
Reviewers: kcc, alekseyshl
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D27816
llvm-svn: 289838
We already have an interceptor for __shared_weak_count::__release_shared, this patch handles __shared_count::__release_shared in the same way. This should get rid of TSan false positives when using std::future.
Differential Revision: https://reviews.llvm.org/D27797
llvm-svn: 289831
Summary:
The layout of all registers saved on stack shouldn't deviate and will be reused in future trampolines as well.
While there, fix whitespace and clarify comments.
Author: mpel
Reviewers: dberris
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D27799
llvm-svn: 289789
Objects may move during the garbage collection, and JVM needs
to notify ThreadAnalyzer about that. The new function
__tsan_java_find eliminates the need to maintain these
objects both in ThreadAnalyzer and JVM.
Author: Alexander Smundak (asmundak)
Reviewed in https://reviews.llvm.org/D27720
llvm-svn: 289682
Summary:
I atually had an integer overflow on 32-bit with D27428 that didn't reproduce
locally, as the test servers would manage allocate addresses in the 0xffffxxxx
range, which led to some issues when rounding addresses.
At this point, I feel that Scudo could benefit from having its own combined
allocator, as we don't get any benefit from the current one, but have to work
around some hurdles (alignment checks, rounding up that is no longer needed,
extraneous code).
Reviewers: kcc, alekseyshl
Subscribers: llvm-commits, kubabrecka
Differential Revision: https://reviews.llvm.org/D27681
llvm-svn: 289572
Summary:
This should improve the error messages generated providing a bit more
information when the failures are printed out. One example of a
contrived error looks like:
```
Expected: (Buffers.getBuffer(Buf)) != (std::error_code()), actual:
system:0 vs system:0
```
Because we're using error codes, the default printing gets us more
useful information in case of failure.
This is a follow-up on D26232.
Reviewers: rSerge
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D27495
llvm-svn: 289501
In certain OS versions, it was possible that libmalloc replaced the sanitizer zone from being the default zone (i.e. being in malloc_zones[0]). This patch introduces a failsafe that makes sure we always stay the default zone. No testcase for this, because this doesn't reproduce under normal circumstances.
Differential Revision: https://reviews.llvm.org/D27083
llvm-svn: 289376
We currently have a interceptor for malloc_create_zone, which returns a new zone that redirects all the zone requests to our sanitizer zone. However, calling malloc_destroy_zone on that zone will cause libmalloc to print out some warning messages, because the zone is not registered in the list of zones. This patch handles this and adds a testcase for that.
Differential Revision: https://reviews.llvm.org/D27083
llvm-svn: 289375
Summary: I see crashes on this check when some reports are being generated.
Reviewers: eugenis
Subscribers: kubabrecka, llvm-commits
Differential Revision: https://reviews.llvm.org/D27574
llvm-svn: 289145
Summary:
The combined allocator rounds up the requested size with regard to the
alignment, which makes sense when being serviced by the primary as it comes
with alignment guarantees, but not with the secondary. For the rare case of
large alignments, it wastes memory, and entices unnecessarily large fields for
the Scudo header. With this patch, we pass the non-alignement-rounded-up size
to the secondary, and adapt the Scudo code for this change.
Reviewers: alekseyshl, kcc
Subscribers: llvm-commits, kubabrecka
Differential Revision: https://reviews.llvm.org/D27428
llvm-svn: 289088
Summary: For platforms which support slow unwinder only, we restrict the store context size to 1, basically only storing the current pc. We do this because the slow unwinder which is based on libunwind is not async signal safe and causes random freezes in forking applications as well as in signal handlers.
Reviewed by eugenis.
Differential: D23107
llvm-svn: 289027
Summary:
For idivsi3, convert the Thumb2 only instruction to thumb1.
For aeabi_idivmod, using __divsi3.
Reviewers: rengolin, compnerd
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D27472
llvm-svn: 288960
Summary: Since CLZ is not available for Thumb1, we use __ARM_ARCH_ISA_THUMB != 1 as one of the conditions.
Reviewers: rnk, compnerd, rengolin
Subscribers: aemerson, rengolin, llvm-commits
Differential Revision: https://reviews.llvm.org/D27530
llvm-svn: 288954
As constructed before this patch, in case we run into case where we
don't actually build the XRay library, we really ought to not be adding
the unit test runs. This should fix the bootstrap build failures.
This is a follow-up further to D26232.
llvm-svn: 288788
Before this, the change committed in D26232 might have an uninitialised
std::atomic<bool> that may or may not have a valid state. On aarch64
this breaks consistently, while it doesn't manifest as a problem in
x86_64.
This is an attempt to un-break this in aarch64.
llvm-svn: 288776
This implements a simple buffer queue to manage a pre-allocated queue of
fixed-sized buffers to hold XRay records. We need this to support
Flight Data Recorder (FDR) mode. We also implement this as a sub-library
first to allow for development before actually using it in an
implementation.
Some important properties of the buffer queue:
- Thread-safe enqueueing/dequeueing of fixed-size buffers.
- Pre-allocation of buffers at construction.
This is a re-roll of the previous attempt to submit, because it caused
failures in arm and aarch64.
Reviewers: majnemer, echristo, rSerge
Subscribers: tberghammer, danalbert, srhines, modocache, mehdi_amini, mgorny, llvm-commits
Differential Revision: https://reviews.llvm.org/D26232
llvm-svn: 288775
