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globals for now)
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@281886 91177308-0d34-0410-b5e6-96231b3b80d8
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Depends on D21612 which implements the building blocks for the compiler-rt
implementation of the XRay runtime. We use a naive in-memory log of fixed-size
entries that get written out to a log file when the buffers are full, and when
the thread exits.
This implementation lays some foundations on to allowing for more complex XRay
records to be written to the log in subsequent changes. It also defines the format
that the function call accounting tool in D21987 will start building upon.
Once D21987 lands, we should be able to start defining more tests using that tool
once the function call accounting tool becomes part of the llvm distribution.
Reviewers: echristo, kcc, rnk, eugenis, majnemer, rSerge
Subscribers: sdardis, rSerge, dberris, tberghammer, danalbert, srhines, majnemer, llvm-commits, mehdi_amini
Differential Revision: https://reviews.llvm.org/D21982
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@279805 91177308-0d34-0410-b5e6-96231b3b80d8
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https://github.com/google/sanitizers/issues/322
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@279780 91177308-0d34-0410-b5e6-96231b3b80d8
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Subscribers: kubabrecka
Differential Revision: https://reviews.llvm.org/D23186
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@277858 91177308-0d34-0410-b5e6-96231b3b80d8
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initialisation code
This addresses some comments from D21612, which contains the following changes:
- Update __xray_patch() and __xray_unpatch() API documentation to not imply asynchrony.
- Introduce a scope cleanup mechanism to make sure we can roll-back changes to the XRayPatching global atomic.
- Introduce a few more comments for potential extension points for other platforms (for the implementation details of patching and un-patching).
Reviewers: eugenis, rnk, kcc, echristo, majnemer
Subscribers: llvm-commits, mehdi_amini
Differential Revision: https://reviews.llvm.org/D22911
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@277124 91177308-0d34-0410-b5e6-96231b3b80d8
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to extraneous and missing dependencies and attempts to build on unsupported OSes
Summary:
This is a fixed-up version of D21612, to address failure identified post-commit.
Original commit description:
This patch implements the initialisation and patching routines for the XRay runtime, along with the necessary trampolines for function entry/exit handling. For now we only define the basic hooks for allowing an implementation to define a handler that gets run on function entry/exit. We expose a minimal API for controlling the behaviour of the runtime (patching, cleanup, and setting the handler to invoke when instrumenting).
Fixes include:
- Gating XRay build to only Linux x86_64 and with the right dependencies in case it is the only library being built
- Including <cstddef> to fix std::size_t issue
Reviewers: kcc, rnk, echristo
Subscribers: mehdi_amini, llvm-commits
Differential Revision: https://reviews.llvm.org/D22611
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@276251 91177308-0d34-0410-b5e6-96231b3b80d8
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runtime"
and also the follow-up "[xray] Only build xray on Linux for now"
Two build errors were reported on the llvm-commits list:
[ 88%] Building CXX object lib/xray/CMakeFiles/clang_rt.xray-x86_64.dir/xray_flags.cc.o
/mnt/b/sanitizer-buildbot1/sanitizer-x86_64-linux/build/llvm/projects/compiler-rt/lib/xray/xray_init.cc:23:10: fatal error: 'llvm/Support/ELF.h' file not found
#include "llvm/Support/ELF.h"
^
and
In file included from /w/src/llvm.org/projects/compiler-rt/lib/xray/xray_interface.cc:16:
/w/src/llvm.org/projects/compiler-rt/lib/xray/xray_interface_internal.h:36:8: error:
no type named 'size_t' in namespace 'std'
std::size_t Entries;
~~~~~^
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@276186 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
This patch implements the initialisation and patching routines for the XRay runtime, along with the necessary trampolines for function entry/exit handling. For now we only define the basic hooks for allowing an implementation to define a handler that gets run on function entry/exit. We expose a minimal API for controlling the behaviour of the runtime (patching, cleanup, and setting the handler to invoke when instrumenting).
Depends on D19904
Reviewers: echristo, kcc, rnk
Subscribers: rnk, mehdi_amini, llvm-commits
Differential Revision: https://reviews.llvm.org/D21612
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@276117 91177308-0d34-0410-b5e6-96231b3b80d8
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Adds a new esan public interface routine __esan_get_sample_count() and uses
it to ensure that tests of sampling receive the minimum number of samples.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@275948 91177308-0d34-0410-b5e6-96231b3b80d8
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strcasecmp, strstr, strcasestr, memmem
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@275621 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
This patch is a refactoring of the way cmake 'targets' are grouped.
It won't affect non-UI cmake-generators.
Clang/LLVM are using a structured way to group targets which ease
navigation through Visual Studio UI. The Compiler-RT projects
differ from the way Clang/LLVM are grouping targets.
This patch doesn't contain behavior changes.
Reviewers: kubabrecka, rnk
Subscribers: wang0109, llvm-commits, kubabrecka, chrisha
Differential Revision: http://reviews.llvm.org/D21952
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@275111 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
Adds a new public interface routine __esan_report() which can be used to
request profiling results prior to abnormal termination (e.g., for a server
process killed by its parent where the normal exit does not allow for
normal result reporting).
Implements this for the working-set tool. The cache frag tool is left
unimplemented as it requires missing iteration capabilities.
Adds a new test.
Reviewers: aizatsky
Subscribers: vitalybuka, zhaoqin, kcc, eugenis, llvm-commits, kubabrecka
Differential Revision: http://reviews.llvm.org/D22098
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@274964 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@273746 91177308-0d34-0410-b5e6-96231b3b80d8
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This patch adds the __sanitizer_start_switch_fiber and
__sanitizer_finish_switch_fiber methods inspired from what can be found here
https://github.com/facebook/folly/commit/2ea64dd24946cbc9f3f4ac3f6c6b98a486c56e73 .
These methods are needed when the compiled software needs to implement
coroutines, fibers or the like. Without a way to annotate them, when the program
jumps to a stack that is not the thread stack, __asan_handle_no_return shows a
warning about that, and the fake stack mechanism may free fake frames that are
still in use.
Author: blastrock (Philippe Daouadi)
Reviewed in http://reviews.llvm.org/D20913
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@273260 91177308-0d34-0410-b5e6-96231b3b80d8
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__sanitizer_install_malloc_and_free_hooks
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@272943 91177308-0d34-0410-b5e6-96231b3b80d8
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memory profiler; asan/Linux-only for now)
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@271463 91177308-0d34-0410-b5e6-96231b3b80d8
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sanitizer logging to another fd from inside the process
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@271046 91177308-0d34-0410-b5e6-96231b3b80d8
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the result of the computations. With that, don't do any mutations if memcmp/etc returned 0
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@257423 91177308-0d34-0410-b5e6-96231b3b80d8
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Differential Revision: http://reviews.llvm.org/D15871
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@256804 91177308-0d34-0410-b5e6-96231b3b80d8
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container.
Differential Revision: http://reviews.llvm.org/D14341
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@252071 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@251071 91177308-0d34-0410-b5e6-96231b3b80d8
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This can be used to annotate copies of memory that are not observed by MSan.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@250124 91177308-0d34-0410-b5e6-96231b3b80d8
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__sanitizer_set_death_callback().
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@245754 91177308-0d34-0410-b5e6-96231b3b80d8
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all sanitizers.
Summary:
Merge "exitcode" flag from ASan, LSan, TSan and "exit_code" from MSan
into one entity. Additionally, make sure sanitizer_common now uses the
value of common_flags()->exitcode when dying on error, so that this
flag will automatically work for other sanitizers (UBSan and DFSan) as
well.
User-visible changes:
* "exit_code" MSan runtime flag is now deprecated. If explicitly
specified, this flag will take precedence over "exitcode".
The users are encouraged to migrate to the new version.
* __asan_set_error_exit_code() and __msan_set_exit_code() functions
are removed. With few exceptions, we don't support changing runtime
flags during program execution - we can't make them thread-safe.
The users should use __sanitizer_set_death_callback()
that would call _exit() with proper exit code instead.
* Plugin tools (LSan and UBSan) now inherit the exit code of the parent
tool. In particular, this means that ASan would now crash the program
with exit code "1" instead of "23" if it detects leaks.
Reviewers: kcc, eugenis
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D12120
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@245734 91177308-0d34-0410-b5e6-96231b3b80d8
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sanitizers. Hide the declaration and the calls in better macros
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@243610 91177308-0d34-0410-b5e6-96231b3b80d8
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fuzzing. More hooks will be added later. So far this is a Linux-only feature
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@243601 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@242589 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
Add a weak hook to be called from dfsan's custom memcmp.
The primary user will be lib/Fuzzer.
If this works well we'll add more hooks (strcmp, etc).
Test Plan: Will be covered by lib/Fuzzer tests.
Reviewers: pcc
Reviewed By: pcc
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D9541
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@236679 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
Add an interface function which can be used to periodically trigger
leak detection in a long-running process.
NB: The meaning of the kIgnored tag has been changed to allow easy clean-up
between subsequent leak checks. Previously, this tag was applied to explicitly
ignored (i.e. with __lsan_disable() or __lsan_ignore_object()) chunks *and* any
chunks only reachable from those. With this change, it's only applied to
explicitly ignored chunks.
Reviewers: samsonov
Reviewed By: samsonov
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D9159
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@235728 91177308-0d34-0410-b5e6-96231b3b80d8
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Accidentally committed from local branch. :(
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@235727 91177308-0d34-0410-b5e6-96231b3b80d8
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fuzzing).
Introduce -mllvm -sanitizer-coverage-8bit-counters=1
which adds imprecise thread-unfriendly 8-bit coverage counters.
The run-time library maps these 8-bit counters to 8-bit bitsets in the same way
AFL (http://lcamtuf.coredump.cx/afl/technical_details.txt) does:
counter values are divided into 8 ranges and based on the counter
value one of the bits in the bitset is set.
The AFL ranges are used here: 1, 2, 3, 4-7, 8-15, 16-31, 32-127, 128+.
These counters provide a search heuristic for single-threaded
coverage-guided fuzzers, we do not expect them to be useful for other purposes.
Depending on the value of -fsanitize-coverage=[123] flag,
these counters will be added to the function entry blocks (=1),
every basic block (=2), or every edge (=3).
Use these counters as an optional search heuristic in the Fuzzer library.
Add a test where this heuristic is critical.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@231166 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@230639 91177308-0d34-0410-b5e6-96231b3b80d8
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<sanitizer/coverage_interface.h>. NFC, except for the header name change. This may break existing users, but in this case it's better this way (not too many users so far)
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@228017 91177308-0d34-0410-b5e6-96231b3b80d8
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while it is running (single-threaded). Also expose the current coverage set to the process.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@227387 91177308-0d34-0410-b5e6-96231b3b80d8
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Move a bunch of functions to a new source file and rename some of them for
consistency. No functional changes.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@226673 91177308-0d34-0410-b5e6-96231b3b80d8
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__asan_set_death_callback
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@224286 91177308-0d34-0410-b5e6-96231b3b80d8
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Differential Revision: http://reviews.llvm.org/D6306
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@222425 91177308-0d34-0410-b5e6-96231b3b80d8
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for coverage-guided in-process fuzzers
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@222060 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@219632 91177308-0d34-0410-b5e6-96231b3b80d8
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extraction and locating addresses
Reviewed at http://reviews.llvm.org/D4527
Fixed a test case failure on 32-bit Linux, I did right shift on intptr_t, instead it should have been uintptr_t.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@218538 91177308-0d34-0410-b5e6-96231b3b80d8
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addresses
Reviewed at http://reviews.llvm.org/D4527
This patch is part of an effort to implement a more generic debugging API, as proposed in http://lists.cs.uiuc.edu/pipermail/llvmdev/2014-July/074656.html, with first part reviewed at http://reviews.llvm.org/D4466. Now adding several new APIs: __asan_report_present, __asan_get_report_{pc,bp,sp,address,type,size,description}, __asan_locate_address. These return whether an asan report happened yet, the PC, BP, SP, address, access type (read/write), access size and bug description (e.g. "heap-use-after-free"), __asan_locate_address takes a pointer and tries to locate it, i.e. say whether it is a heap pointer, a global or a stack, or whether it's a pointer into the shadow memory. If global or stack, tries to also return the variable name, address and size. If heap, tries to return the chunk address and size. Generally these should serve as an alternative to "asan_describe_address", which only returns all the data in text form. Having an API to get these data could allow having debugging scripts/extensions that could show additional information about a variable/expression/pointer. Test cases in test/asan/TestCases/debug_locate.cc and test/asan/TestCasea/debug_report.cc.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@218481 91177308-0d34-0410-b5e6-96231b3b80d8
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favor of
a unified interface in <sanitizer/allocator_interface.h>.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@215469 91177308-0d34-0410-b5e6-96231b3b80d8
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memory mapping info
Reviewed at http://reviews.llvm.org/D4466
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@213080 91177308-0d34-0410-b5e6-96231b3b80d8
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Introduce new public header <sanitizer/allocator_interface.h> and a set
of functions __sanitizer_get_ownership(), __sanitizer_malloc_hook() etc.
that will eventually replace their tool-specific equivalents
(__asan_get_ownership(), __msan_get_ownership() etc.). Tool-specific
functions are now deprecated and implemented as stubs redirecting
to __sanitizer_ versions (which are implemented differently in each tool).
Replace all uses of __xsan_ versions with __sanitizer_ versions in unit
and lit tests.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@212469 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary: Add a new interface function required for coverage sandboxing support.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@209298 91177308-0d34-0410-b5e6-96231b3b80d8
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Generalize StackDepot and create a new specialized instance of it to
efficiently (i.e. without duplicating stack trace data) store the
origin history tree.
This reduces memory usage for chained origins roughly by an order of
magnitude.
Most importantly, this new design allows us to put two limits on
stored history data (exposed in MSAN_OPTIONS) that help avoid
exponential growth in used memory on certain workloads.
See comments in lib/msan/msan_origin.h for more details.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@209284 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
Sandboxed code may now pass additional arguments to
__sanitizer_sandbox_on_notify() to force all coverage data to be dumped to a
single file (the default is one file per module). The user may supply a file or
socket to write to. The latter option can be used to broker out the file writing
functionality. If -1 is passed, we pre-open a file.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@209121 91177308-0d34-0410-b5e6-96231b3b80d8
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