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22 Commits

Author SHA1 Message Date
Kostya Serebryany 93679be037 [libFuzzer] factor out some code into GetSizedFilesFromDir; NFC 
llvm-svn: 313081
 2017-09-12 21:58:07 +00:00
Max Moroz 3f26dac416 [libfuzzer] Compare TotalNumberOfRuns with MaxNumberOfRuns when testing a memory leak. 
Summary:
Fuzzer::TryDetectingAMemoryLeak may call ExecuteCallback which would
increment TotalNumberOfRuns, but it doesn't respect Options.MaxNumberOfRuns
value specified by a user.

Context: https://github.com/google/oss-fuzz/issues/822#issuecomment-328153970

Reviewers: kcc

Reviewed By: kcc

Differential Revision: https://reviews.llvm.org/D37632

llvm-svn: 312993
 2017-09-12 02:01:54 +00:00
Kostya Serebryany 25d6b95679 [libFuzzer] remove a couple of reduntant includes 
llvm-svn: 312848
 2017-09-09 00:56:34 +00:00
Kostya Serebryany 082e9a7528 [libFuzzer] tolerate missing files when loading the seed corpus 
llvm-svn: 312269
 2017-08-31 19:17:15 +00:00
Kamil Rytarowski 8da2722a9f Add preliminary NetBSD support in libfuzzer 
Summary:
This code already works and passes some number of tests.

There is need to finish remaining sanitizers to get better coverage.

Many tests fail due to overly long file names of executables (>31).
This is a current shortcoming of the NetBSD 8(beta) kernel, as
certain functions can fail (like retrieving file name of executable).

Sponsored by <The NetBSD Foundation>

Reviewers: joerg, kcc, vitalybuka, george.karpenkov

Reviewed By: kcc

Subscribers: mgorny, llvm-commits, #sanitizers

Tags: #sanitizers

Differential Revision: https://reviews.llvm.org/D37304

llvm-svn: 312183
 2017-08-30 22:44:11 +00:00
Kostya Serebryany 4faeb87ebe [libFUzzer] change the way we load the seed corpora: instead of loading all files and these executing all files, load and execute them one-by-one. This should reduce the memory usage in many cases 
llvm-svn: 312033
 2017-08-29 20:51:24 +00:00
Kostya Serebryany 3a8e3c8336 [libFuzzer] refactoring: move reading the seed corpus closer to where it's consumed; NFC 
llvm-svn: 311972
 2017-08-29 02:05:01 +00:00
Kostya Serebryany c07008653c [libFuzzer] allow -print_funcs=N: N is the max number of new covered function printed 
llvm-svn: 311945
 2017-08-28 22:52:22 +00:00
George Karpenkov dacfd66dfd [libFuzzer] Fix libFuzzer flag propagation for standalone builds. 
Under the previous configurations, flags from SANITIZER_COMMON were not
propagated for standalone builds.

Differential Revision: https://reviews.llvm.org/D37225

llvm-svn: 311912
 2017-08-28 19:44:19 +00:00
George Karpenkov bebcbfb46d [libFuzzer] Use custom allocators for STL containers in libFuzzer. 
Avoids ODR violations causing spurious ASAN warnings.

Differential Revision: https://reviews.llvm.org/D37086

llvm-svn: 311866
 2017-08-27 23:20:09 +00:00
George Karpenkov 24069a0424 Revert "[libFuzzer] Use custom allocators for STL containers in libFuzzer" 
This reverts commit 3539efc2f2218dba2bcbd645d0fe276f2b5cf588.

llvm-svn: 311831
 2017-08-26 17:50:35 +00:00
George Karpenkov d50410bfb1 [libFuzzer] Use custom allocators for STL containers in libFuzzer 
Avoids ODR violations causing spurious ASAN container overflow warnings.

Differential Revision: https://reviews.llvm.org/D37086

llvm-svn: 311830
 2017-08-26 17:17:37 +00:00
Kostya Serebryany 09c4161029 [libFuzzer] prepare tests for switching from -fsanitize-coverage=trace-pc-guard to -fsanitize-coverage=inline-8bit-counters 
llvm-svn: 311798
 2017-08-25 20:20:46 +00:00
Kostya Serebryany 2eef816e6e [libFuzzer] add -print_funcs=1 (on bey default): print newly discovered functions during fuzzing 
llvm-svn: 311797
 2017-08-25 20:09:25 +00:00
Kostya Serebryany d3e4b7e24a [sanitizer-coverage] extend fsanitize-coverage=pc-table with flags for every PC 
llvm-svn: 311794
 2017-08-25 19:29:47 +00:00
Matt Morehouse b1fa8255db [SanitizerCoverage] Optimize stack-depth instrumentation. 
Summary:
Use the initialexec TLS type and eliminate calls to the TLS
wrapper.  Fixes the sanitizer-x86_64-linux-fuzzer bot failure.

Reviewers: vitalybuka, kcc

Reviewed By: kcc

Subscribers: hiraditya, llvm-commits

Differential Revision: https://reviews.llvm.org/D37026

llvm-svn: 311490
 2017-08-22 21:28:29 +00:00
George Karpenkov 6bb45f793f [libFuzzer] Move check for thread_local back into libFuzzer's CMake, 
as it breaks builtin standalone build on some bots.

llvm-svn: 311482
 2017-08-22 18:34:28 +00:00
Kostya Serebryany 33fb36c353 [libFuzzer] fix the stack-depth initialization, add a lit test for DeepRecursionTest.cpp 
llvm-svn: 311421
 2017-08-22 01:50:00 +00:00
Kostya Serebryany f65cf64fa2 [libFuzzer] apply changes lost during the migration to compiler-rt 
llvm-svn: 311420
 2017-08-22 01:28:32 +00:00
Kostya Serebryany 055f441bd2 [libFuzzer] better README.txt 
llvm-svn: 311418
 2017-08-22 01:15:40 +00:00
Kostya Serebryany 0977643039 [libFuzzer] remove stale file 
llvm-svn: 311417
 2017-08-22 01:14:53 +00:00
George Karpenkov 10ab2ace13 Move libFuzzer to compiler_rt. 
Resulting library binaries will be named libclang_rt.fuzzer*, and will
be placed in Clang toolchain, allowing redistribution.

Differential Revision: https://reviews.llvm.org/D36908

llvm-svn: 311407
 2017-08-21 23:25:50 +00:00