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* [compiler-rt] Add ubsan interface header.Pierre Gousseau2019-09-132-0/+33
| | | | | | | | | | This is to document __ubsan_default_options(). Reviewed By: vitalybuka Differential Revision: https://reviews.llvm.org/D67503 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@371822 91177308-0d34-0410-b5e6-96231b3b80d8
* [compiler-rt] Remove some cpplint filtersVitaly Buka2019-09-121-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@371704 91177308-0d34-0410-b5e6-96231b3b80d8
* [dfsan] Revert dfsan_set_label removalVitaly Buka2019-09-111-0/+5
| | | | | | It's part of interface, maybe it is used in external code. git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@371691 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove NOLINTs from compiler-rtVitaly Buka2019-09-112-9/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@371687 91177308-0d34-0410-b5e6-96231b3b80d8
* Update compiler-rt cpplint.pyVitaly Buka2019-09-111-1/+1
| | | | | | https://github.com/cpplint/cpplint/commit/adb3500107f409ac5491188ae652ac3f4d03d9d3 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@371675 91177308-0d34-0410-b5e6-96231b3b80d8
* [compiler-rt] FuzzedDataProvider: use C++ headers only instead of a C/C++ mix.Max Moroz2019-08-091-4/+3
| | | | | | | | | | | | | | Reviewers: Dor1s Reviewed By: Dor1s Subscribers: dberris, delcypher, #sanitizers, llvm-commits Tags: #llvm, #sanitizers Differential Revision: https://reviews.llvm.org/D66017 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@368448 91177308-0d34-0410-b5e6-96231b3b80d8
* [compiler-rt] Add ConsumeProbability and ConsumeFloatingPoint methods to FDP.Max Moroz2019-08-082-6/+61
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: Also slightly cleaned up the comments and changed the header's extension back to `.h` as per comments on https://reviews.llvm.org/D65812. New methods added: * `ConsumeProbability` returns [0.0, 1.0] by consuming an unsigned integer value from the input data and dividing that value by the integer's max value. * `ConsumeFloatingPointInRange` returns a floating point value in the given range. Relies on `ConsumeProbability` method. This method does not have the limitation of `std::uniform_real_distribution` that requires the given range to be <= the floating point type's max. If the range is too large, this implementation will additionally call `ConsumeBool` to decide whether the result will be in the first or the second half of the range. * `ConsumeFloatingPoint` returns a floating point value in the range `[std::numeric_limits<T>::lowest(), std::numeric_limits<T>::min()]`. Tested on Linux, Mac, Windows. Reviewers: morehouse Reviewed By: morehouse Subscribers: kubamracek, mgorny, dberris, delcypher, #sanitizers, llvm-commits Tags: #llvm, #sanitizers Differential Revision: https://reviews.llvm.org/D65905 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@368331 91177308-0d34-0410-b5e6-96231b3b80d8
* [compiler-rt] Rename FuzzedDataProvider.h to .hpp and other minor changes.Max Moroz2019-08-062-2/+2
| | | | | | | | | | | | | | | | | | Summary: .hpp makes more sense for this header as it's C++ only, plus it contains the actual implementation. Reviewers: Dor1s Reviewed By: Dor1s Subscribers: kubamracek, dberris, mgorny, delcypher, #sanitizers, llvm-commits Tags: #llvm, #sanitizers Differential Revision: https://reviews.llvm.org/D65812 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@368054 91177308-0d34-0410-b5e6-96231b3b80d8
* [compiler-rt] Move FDP to include/fuzzer/FuzzedDataProvider.h for easier use.Max Moroz2019-08-052-0/+254
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: FuzzedDataProvider is a helper class for writing fuzz targets that fuzz multple inputs simultaneously. The header is supposed to be used for fuzzing engine agnostic fuzz targets (i.e. the same target can be used with libFuzzer, AFL, honggfuzz, and other engines). The common thing though is that fuzz targets are typically compiled with clang, as it provides all sanitizers as well as different coverage instrumentation modes. Therefore, making this FDP class a part of the compiler-rt installation package would make it easier to develop and distribute fuzz targets across different projects, build systems, etc. Some context also available in https://github.com/google/oss-fuzz/pull/2547. This CL does not delete the header from `lib/fuzzer/utils` directory in order to provide the downstream users some time for a smooth migration to the new header location. Reviewers: kcc, morehouse Reviewed By: morehouse Subscribers: lebedev.ri, kubamracek, dberris, mgorny, delcypher, #sanitizers, llvm-commits Tags: #llvm, #sanitizers Differential Revision: https://reviews.llvm.org/D65661 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@367917 91177308-0d34-0410-b5e6-96231b3b80d8
* [dfsan] Introduce dfsan_flush().Kostya Serebryany2019-06-131-0/+6
| | | | | | | | | | | | | | | | | | | Summary: dfsan_flush() allows to restart tain tracking from scratch in the same process. The primary purpose right now is to allow more efficient data flow tracing for DFT fuzzing: https://github.com/google/oss-fuzz/issues/1632 Reviewers: pcc Reviewed By: pcc Subscribers: delcypher, #sanitizers, llvm-commits Tags: #llvm, #sanitizers Differential Revision: https://reviews.llvm.org/D63037 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@363321 91177308-0d34-0410-b5e6-96231b3b80d8
* [compiler-rt] Update comments in asan header to doxygen format; NFC.Pierre Gousseau2019-06-112-295/+609
| | | | | | | | | | | | | | Add description to undocumented functions. Improve spelling, grammar and formatting. Patch by: Craig Flores, Filipe Cabecinhas, Pierre Gousseau Reviewed By: Johannes Doerfert Differential Revision: https://reviews.llvm.org/D62245 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@363038 91177308-0d34-0410-b5e6-96231b3b80d8
* [MSan] Introduce __msan_unpoison_param().Matt Morehouse2019-05-091-0/+3
| | | | | | | | | | | | | | | | | | | Summary: This allows libFuzzer to unpoison parameter shadow before calling LLVMFuzzerTestOneInput to eliminate the false positives described in https://github.com/google/oss-fuzz/issues/2369. Reviewers: eugenis Reviewed By: eugenis Subscribers: llvm-commits, metzman, kcc Tags: #llvm Differential Revision: https://reviews.llvm.org/D61751 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@360379 91177308-0d34-0410-b5e6-96231b3b80d8
* [sanitizer] Implement reallocarray.Evgeniy Stepanov2019-05-011-0/+1
| | | | | | | | | | | | | | | | Summary: It's a cross of calloc and realloc. Sanitizers implement calloc-like check for size overflow. Reviewers: vitalybuka, kcc Subscribers: kubamracek, #sanitizers, llvm-commits Tags: #sanitizers, #llvm Differential Revision: https://reviews.llvm.org/D61108 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@359708 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove esan.Nico Weber2019-03-112-50/+0
| | | | | | | | | | | It hasn't seen active development in years, and it hasn't reached a state where it was useful. Remove the code until someone is interested in working on it again. Differential Revision: https://reviews.llvm.org/D59133 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@355862 91177308-0d34-0410-b5e6-96231b3b80d8
* [hwasan, asan] Intercept vfork.Evgeniy Stepanov2019-02-271-0/+8
| | | | | | | | | | | | | | | Summary: Intercept vfork on arm, aarch64, i386 and x86_64. Reviewers: pcc, vitalybuka Subscribers: kubamracek, mgorny, javed.absar, krytarowski, kristof.beyls, #sanitizers, llvm-commits Tags: #sanitizers, #llvm Differential Revision: https://reviews.llvm.org/D58533 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@355030 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert "[asan] Fix vfork handling.", +1Evgeniy Stepanov2019-02-211-8/+0
| | | | | | Revert r354625, r354627 - multiple build failures. git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@354629 91177308-0d34-0410-b5e6-96231b3b80d8
* [hwasan,asan] Intercept vfork.Evgeniy Stepanov2019-02-211-0/+8
| | | | | | | | | | | | | | Summary: AArch64 only for now. Reviewers: vitalybuka, pcc Subscribers: srhines, kubamracek, mgorny, javed.absar, krytarowski, kristof.beyls, jdoerfert, #sanitizers, llvm-commits, kcc Tags: #sanitizers, #llvm Differential Revision: https://reviews.llvm.org/D58313 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@354625 91177308-0d34-0410-b5e6-96231b3b80d8
* Dmitry Vyukov2019-02-131-0/+18
| | | | | | | | | | | | | | | | | | | | | | | | | tsan: add fiber support This patch adds functions for managing fibers: __tsan_get_current_fiber() __tsan_create_fiber() __tsan_destroy_fiber() __tsan_switch_to_fiber() __tsan_set_fiber_name() See the added tests for use examples. Author: yuri (Yuri Per) Reviewed in: https://reviews.llvm.org/D54889 [The previous commit of this change was reverted, this is a resubmit with a squashed fix for check_analyze.sh and COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED] git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@353947 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert "tsan: add fiber support"Diana Picus2019-02-131-18/+0
| | | | | | | This reverts commit r353817 because we think it broke AARch64 and PowerPC buildbots. git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@353939 91177308-0d34-0410-b5e6-96231b3b80d8
* tsan: add fiber supportDmitry Vyukov2019-02-121-0/+18
| | | | | | | | | | | | | | | | | | | This patch adds functions for managing fibers: __tsan_get_current_fiber() __tsan_create_fiber() __tsan_destroy_fiber() __tsan_switch_to_fiber() __tsan_set_fiber_name() See the added tests for use examples. Author: yuri (Yuri Per) Reviewed in: https://reviews.llvm.org/D54889 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@353817 91177308-0d34-0410-b5e6-96231b3b80d8
* hwasan: Add __hwasan_init_static() function.Peter Collingbourne2019-01-311-4/+8
| | | | | | | | | | | This function initializes enough of the runtime to be able to run instrumented code in a statically linked executable. It replaces __hwasan_shadow_init() which wasn't doing enough initialization for instrumented code that uses either TLS or IFUNC to work. Differential Revision: https://reviews.llvm.org/D57490 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@352816 91177308-0d34-0410-b5e6-96231b3b80d8
* Adjust documentation for git migration.James Y Knight2019-01-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes most references to the paths: llvm.org/svn/ llvm.org/git/ llvm.org/viewvc/ github.com/llvm-mirror/ github.com/llvm-project/ reviews.llvm.org/diffusion/ to instead point to https://github.com/llvm/llvm-project. This is *not* a trivial substitution, because additionally, all the checkout instructions had to be migrated to instruct users on how to use the monorepo layout, setting LLVM_ENABLE_PROJECTS instead of checking out various projects into various subdirectories. I've attempted to not change any scripts here, only documentation. The scripts will have to be addressed separately. Additionally, I've deleted one document which appeared to be outdated and unneeded: lldb/docs/building-with-debug-llvm.txt Differential Revision: https://reviews.llvm.org/D57330 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@352514 91177308-0d34-0410-b5e6-96231b3b80d8
* Update the file headers across all of the LLVM projects in the monorepoChandler Carruth2019-01-1917-68/+51
| | | | | | | | | | | | | | | | | 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. git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@351636 91177308-0d34-0410-b5e6-96231b3b80d8
* xray: Add missing header to list of installed headers.Peter Collingbourne2019-01-171-0/+1
| | | | | | | | Spotted by gn's llvm/utils/gn/build/sync_source_lists_from_cmake.py script. Differential Revision: https://reviews.llvm.org/D56797 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@351479 91177308-0d34-0410-b5e6-96231b3b80d8
* Make compiler-rt CMakeLists.txt formatting a bit more like LLVM's usual ↵Nico Weber2019-01-161-2/+4
| | | | | | formatting git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@351363 91177308-0d34-0410-b5e6-96231b3b80d8
* Regenerate syscall hooks for NetBSD 8.99.25Kamil Rytarowski2018-10-301-24/+22
| | | | | | | | | | | Register new syscall getsockopt2. Drop removed syscalls pmc_get_info and pmc_control. While there address compiler warnings about potentially unused variables. git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@345582 91177308-0d34-0410-b5e6-96231b3b80d8
* [sanitizer] Include inlined frames into __sanitizer_symbolize_pc outputVitaly Buka2018-10-021-0/+6
| | | | | | | | | | | | | | | | Summary: Behavior for existing used is not changing as the first line is going to be the same, and it was invalid to try to read more lines. New clients can read until they get empty string. Reviewers: eugenis, morehouse Subscribers: kubamracek, eraman, llvm-commits Differential Revision: https://reviews.llvm.org/D52743 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@343605 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert "[sanitizer] Include inlined frames into __sanitizer_symbolize_pc output"Jessica Paquette2018-10-021-6/+0
| | | | | | | | | This reverts r343554. It was breaking some bots: http://lab.llvm.org:8080/green/job/clang-stage1-configure-RA/49997/ git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@343600 91177308-0d34-0410-b5e6-96231b3b80d8
* [sanitizer] Include inlined frames into __sanitizer_symbolize_pc outputVitaly Buka2018-10-021-0/+6
| | | | | | | | | | | | | | | | Summary: Behavior for existing used is not changing as the first line is going to be the same, and it was invalid to try to read more lines. New clients can read until they get empty string. Reviewers: eugenis, morehouse Subscribers: kubamracek, eraman, llvm-commits Differential Revision: https://reviews.llvm.org/D52743 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@343554 91177308-0d34-0410-b5e6-96231b3b80d8
* [XRay] Remove the deprecated __xray_log_init APIPetr Hosek2018-09-151-23/+2
| | | | | | | | | This API has been deprecated three months ago and shouldn't be used anymore, all clients should migrate to the new string based API. Differential Revision: https://reviews.llvm.org/D51606 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@342318 91177308-0d34-0410-b5e6-96231b3b80d8
* [hwasan] introduce __hwasan_print_memory_usageKostya Serebryany2018-09-061-0/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@341592 91177308-0d34-0410-b5e6-96231b3b80d8
* [hwasan] Add a (almost) no-interceptor mode.Evgeniy Stepanov2018-08-201-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | Summary: The idea behind this change is to allow sanitization of libc. We are prototyping on Bionic, but the tool interface will be general enough (or at least generalizable) to support any other libc. When libc depends on libclang_rt.hwasan, the latter can not interpose libc functions. In fact, majority of interceptors become unnecessary when libc code is instrumented. This change gets rid of most hwasan interceptors and provides interface for libc to notify hwasan about thread creation and destruction events. Some interceptors (pthread_create) are kept under #ifdef to enable testing with uninstrumented libc. They are expressed in terms of the new libc interface. The new cmake switch, COMPILER_RT_HWASAN_WITH_INTERCEPTORS, ON by default, builds testing version of the library with the aforementioned pthread_create interceptor. With the OFF setting, the library becomes more of a libc plugin. Reviewers: vitalybuka, kcc, jfb Subscribers: srhines, kubamracek, mgorny, jfb, llvm-commits Differential Revision: https://reviews.llvm.org/D50922 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@340216 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert "Revert "[hwasan] Add __hwasan_handle_longjmp.""Evgeniy Stepanov2018-08-161-0/+7
| | | | | | | | | | | This reapplies commit r339935 with the following changes: * make longjmp test C, not C++, to avoid dependency on libc++/libstdc++ * untag pointer in memset interceptor x86_64 does not have TBI, so hwasan barely works there. Tests must be carefully written in a way that does not leak tagged pointer to system libraries. git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@339963 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert "[hwasan] Add __hwasan_handle_longjmp."Evgeniy Stepanov2018-08-161-7/+0
| | | | | | This reverts commit 339935 which breaks hwasan tests on x86_64. git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@339957 91177308-0d34-0410-b5e6-96231b3b80d8
* [hwasan] Add __hwasan_handle_longjmp.Evgeniy Stepanov2018-08-161-0/+7
| | | | | | | | | | | | | | | | | Summary: A callback to annotate longjmp-like code. Unlike __asan_handle_no_return, in hwasan we can not conservatively "unpoison" the entire thread stack, because there is no such thing as unpoisoned memory. Pointer and memory tags must always match. Reviewers: vitalybuka, kcc Subscribers: kubamracek, llvm-commits Differential Revision: https://reviews.llvm.org/D50752 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@339935 91177308-0d34-0410-b5e6-96231b3b80d8
* [hwasan] Add a basic API.Evgeniy Stepanov2018-08-151-0/+12
| | | | | | | | | | | | | | | | Summary: Add user tag manipulation functions: __hwasan_tag_memory __hwasan_tag_pointer __hwasan_print_shadow (very simple and ugly, for now) Reviewers: vitalybuka, kcc Subscribers: kubamracek, hiraditya, llvm-commits Differential Revision: https://reviews.llvm.org/D50746 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@339746 91177308-0d34-0410-b5e6-96231b3b80d8
* [hwasan] Provide __sanitizer_* aliases to allocator functions.Evgeniy Stepanov2018-08-132-1/+15
| | | | | | | | | | | | | | | | Summary: Export __sanitizer_malloc, etc as aliases to malloc, etc. This way users can wrap sanitizer malloc, even in fully static binaries. Both jemalloc and tcmalloc provide similar aliases (je_* and tc_*). Reviewers: vitalybuka, kcc Subscribers: llvm-commits, kubamracek Differential Revision: https://reviews.llvm.org/D50570 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@339614 91177308-0d34-0410-b5e6-96231b3b80d8
* [hwasan] Allow optional early shadow setup.Evgeniy Stepanov2018-08-131-0/+6
| | | | | | | | | | | | | | | | Summary: Provide __hwasan_shadow_init that can be used to initialize shadow w/o touching libc. It can be used to bootstrap an unusual case of fully-static executable with hwasan-instrumented libc, which needs to run hwasan code before it is ready to serve user calls like madvise(). Reviewers: vitalybuka, kcc Subscribers: kubamracek, llvm-commits Differential Revision: https://reviews.llvm.org/D50581 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@339606 91177308-0d34-0410-b5e6-96231b3b80d8
* [XRay] basic mode PID and TID always fetchDean Michael Berris2018-07-111-3/+6
| | | | | | | | | | | | | | Summary: XRayRecords now includes a PID field. Basic handlers fetch pid and tid each time they are called instead of caching the value. Added a testcase that calls fork and checks if the child TID is different from the parent TID to verify that the processes' TID are different in the trace. Reviewers: dberris, Maknee Reviewed By: dberris, Maknee Subscribers: kpw, llvm-commits, #sanitizers Differential Revision: https://reviews.llvm.org/D49025 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@336769 91177308-0d34-0410-b5e6-96231b3b80d8
* [MSan] Add functions to enable/disable interceptor checks.Matt Morehouse2018-07-061-0/+8
| | | | | | | | | | | | | | | | | | Summary: The motivation for this change is to make libFuzzer+MSan possible without instrumenting libFuzzer. See https://github.com/google/sanitizers/issues/958. Reviewers: eugenis Reviewed By: eugenis Subscribers: llvm-commits, kcc Differential Revision: https://reviews.llvm.org/D48890 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@336447 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a typo; NFCGeorge Burgess IV2018-05-261-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@333331 91177308-0d34-0410-b5e6-96231b3b80d8
* [XRay][compiler-rt+docs] Introduce __xray_log_init_mode(...).Dean Michael Berris2018-05-041-23/+59
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: This addresses http://llvm.org/PR36790. The change Deprecates a number of functions and types in `include/xray/xray_log_interface.h` to recommend using string-based configuration of XRay through the __xray_log_init_mode(...) function. In particular, this deprecates the following: - `__xray_set_log_impl(...)` -- users should instead use the `__xray_log_register_mode(...)` and `__xray_log_select_mode(...)` APIs. - `__xray_log_init(...)` -- users should instead use the `__xray_log_init_mode(...)` function, which also requires using the `__xray_log_register_mode(...)` and `__xray_log_select_mode(...)` functionality. - `__xray::FDRLoggingOptions` -- in following patches, we'll be migrating the FDR logging implementations (and tests) to use the string-based configuration. In later stages we'll remove the `__xray::FDRLoggingOptions` type, and ask users to migrate to using the string-based configuration mechanism instead. - `__xray::BasicLoggingOptions` -- same as `__xray::FDRLoggingOptions`, we'll be removing this type later and instead rely exclusively on the string-based configuration API. We also update the documentation to reflect the new advice and remove some of the deprecated notes. Reviewers: eizan, kpw, echristo, pelikan Reviewed By: kpw Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D46173 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@331503 91177308-0d34-0410-b5e6-96231b3b80d8
* [libFuzzer] Report at most one crash per input.Matt Morehouse2018-05-011-0/+5
| | | | | | | | | | | | | | | | | | Summary: Fixes https://github.com/google/sanitizers/issues/788/, a deadlock caused by multiple crashes happening at the same time. Before printing a crash report, we now test and set an atomic flag. If the flag was already set, the crash handler returns immediately. Reviewers: kcc Reviewed By: kcc Subscribers: llvm-commits, kubamracek Differential Revision: https://reviews.llvm.org/D46277 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@331310 91177308-0d34-0410-b5e6-96231b3b80d8
* [scudo] Adding an interface function to print allocator statsKostya Kortchinsky2018-04-251-0/+5
| | | | | | | | | | | | | | | | Summary: This adds `__scudo_print_stats` as an interface function to display the Primary and Secondary allocator statistics for Scudo. Reviewers: alekseyshl, flowerhack Reviewed By: alekseyshl Subscribers: delcypher, llvm-commits, #sanitizers Differential Revision: https://reviews.llvm.org/D46016 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@330857 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement trampoline and handler for typed xray event tracing.Keith Wyss2018-04-171-1/+13
| | | | | | | | | | | | | | Summary: Compiler-rt support first before defining the __xray_typedevent() lowering in llvm. I'm looking for some early feedback before I touch much more code. Reviewers: dberris Subscribers: delcypher, llvm-commits, #sanitizers Differential Revision: https://reviews.llvm.org/D43668 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@330218 91177308-0d34-0410-b5e6-96231b3b80d8
* [XRay][compiler-rt] Add APIs for processing logs in memoryDean Michael Berris2018-03-071-0/+64
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: This change adds APIs to allow logging implementations to provide a function for iterating through in-memory buffers (if they hold in-memory buffers) and a way for users to generically deal with these buffers in-process. These APIs are: - __xray_log_set_buffer_iterator(...) and __xray_log_remove_buffer_iterator(): installs and removes an iterator function that takes an XRayBuffer and yields the next one. - __xray_log_process_buffers(...): takes a function pointer that can take a mode identifier (string) and an XRayBuffer to process this data as they see fit. The intent is to have the FDR mode implementation's buffers be available through this `__xray_log_process_buffers(...)` API, so that they can be streamed from memory instead of flushed to disk (useful for getting the data to a network, or doing in-process analysis). Basic mode logging will not support this mechanism as it's designed to write the data mostly to disk. Future implementations will may depend on this API as well, to allow for programmatically working through the XRay buffers exposed to the users in some fashion. Reviewers: eizan, kpw, pelikan Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D43495 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@326866 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove obsolete ptrace(2) operations from NetBSDKamil Rytarowski2018-03-031-1/+1
| | | | | | | | | | PT_SET_SIGMASK and PT_GET_SIGMASK will be removed from NetBSD without backward compat (it shortlived in a development branch). Sponsored by <The NetBSD Foundation> git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@326657 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement a large part of NetBSD syscalls of netbsd_syscall_hooks.hKamil Rytarowski2018-02-151-0/+4689
| | | | | | | | | | | This is a follow up of: r325206 - Add NetBSD syscall hooks skeleton in sanitizers Sponsored by <The NetBSD Foundation> git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@325248 91177308-0d34-0410-b5e6-96231b3b80d8
* Add NetBSD syscall hooks skeleton in sanitizersKamil Rytarowski2018-02-152-0/+46
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: Implement the skeleton of NetBSD syscall hooks for use with sanitizers. Add a script that generates the rules to handle syscalls on NetBSD: generate_netbsd_syscalls.awk. It has been written in NetBSD awk(1) (patched nawk) and is compatible with gawk. Generate lib/sanitizer_common/sanitizer_platform_limits_netbsd.h that is a public header for applications, and included as: <sanitizer_common/sanitizer_platform_limits_netbsd.h>. Generate sanitizer_syscalls_netbsd.inc that defines all the syscall rules for NetBSD. This file is modeled after the Linux specific file: sanitizer_common_syscalls.inc. Start recognizing NetBSD syscalls with existing sanitizers: ASan, ESan, HWASan, TSan, MSan. Sponsored by <The NetBSD Foundation> Reviewers: joerg, vitalybuka, kcc, dvyukov, eugenis Reviewed By: vitalybuka Subscribers: hintonda, kubamracek, mgorny, llvm-commits, #sanitizers Tags: #sanitizers Differential Revision: https://reviews.llvm.org/D42048 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@325206 91177308-0d34-0410-b5e6-96231b3b80d8
* [XRay] [compiler-rt] stop writing garbage in naive log recordsMartin Pelikan2018-01-301-1/+1
| | | | | | | | | | | | | | Summary: Turns out sizeof(packed) isn't as strong as we'd hoped. This makes sure that when we initialize the padding, all 12 bytes will be zero. Reviewers: dberris, kpw, eizan Subscribers: delcypher, llvm-commits, #sanitizers Differential Revision: https://reviews.llvm.org/D42494 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@323755 91177308-0d34-0410-b5e6-96231b3b80d8
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