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94 Commits

Author SHA1 Message Date
Kostya Serebryany 47cb4856d4 [libFuzzer] explicitly use -fsanitize-coverage=trace-pc-guard in test/dump_coverage.test; mark print_coverage/dump_coverage as To-be-deprecated 
llvm-svn: 310877
 2017-08-14 19:55:23 +00:00
Kostya Serebryany a84a6c1e48 [libFuzzer] use the in-binary pc table (instead of PCs captured at run-time) to implement -exit_on_src_pos 
llvm-svn: 310151
 2017-08-04 23:49:53 +00:00
Kostya Serebryany 1d7a33b8ae [libFuzzer] remove the now redundant 'LLVMFuzzer-' prefix from libFuzzer tests 
llvm-svn: 310110
 2017-08-04 20:05:25 +00:00
George Karpenkov 8ecdd7be15 Port libFuzzer tests to LIT. Do not require two-stage build for check-fuzzer. 
This revision ports all libFuzzer tests apart from the unittest to LIT.
The advantages of doing so include:

 - Tests being self-contained
 - Much easier debugging of a single test
 - No need for using a two-stage compilation

The unit-test is still compiled using CMake, but it does not need a
freshly built compiler.

NOTE: The previous two-stage bot configuration will NOT work, as in the
second stage build LLVM_USE_SANITIZER is set, which disables ASAN from
being built.
Thus bots will be reconfigured in the next few commits.

Differential Revision: https://reviews.llvm.org/D36295

llvm-svn: 310075
 2017-08-04 17:19:45 +00:00
Matt Morehouse 9e689792b2 Generate error reports when a fuzz target exits. 
Summary:
Implements https://github.com/google/sanitizers/issues/835.

Flush stdout before exiting in test cases.

Since the atexit hook is used for exit reports, pending prints to
stdout can be lost if they aren't flushed before calling exit().

Expect tests to have non-zero exit code if exit() is called.

Reviewers: vitalybuka, kcc

Reviewed By: kcc

Subscribers: eraman, llvm-commits, hiraditya

Differential Revision: https://reviews.llvm.org/D35602

llvm-svn: 308669
 2017-07-20 20:43:39 +00:00
Marcos Pividori e219d40191 [libFuzzer] Change Uninstrumented test name. 
On Windows, executables with the word "uninst" included in their names are
associated with administrator privileges.

Differential Revision: https://reviews.llvm.org/D29549

llvm-svn: 294387
 2017-02-08 00:03:13 +00:00
Marcos Pividori c7ac33454f [libFuzzer] Update fuzzer.test to properly set environment variables. 
Use env to set environment variables, so it works on Windows and Linux.

Differential Revision: https://reviews.llvm.org/D29537

llvm-svn: 294385
 2017-02-08 00:03:03 +00:00
Marcos Pividori 51f907f3a4 [libFuzzer] Update test to consider different exceptions. 
Differential Revision: https://reviews.llvm.org/D29531

llvm-svn: 294377
 2017-02-08 00:02:25 +00:00
Kostya Serebryany d9667914b2 [libFuzzer] use print+exit(1) instead of assert to report an error 
llvm-svn: 292685
 2017-01-21 00:13:50 +00:00
Kostya Serebryany 87a3811d32 [libFuzzer] add an assert to protect against LLVMFuzzerInitialize changing argv[0] 
llvm-svn: 292652
 2017-01-20 21:34:24 +00:00
Kostya Serebryany 035af9b346 [libFuzzer] build libFuzzer itself with asan 
llvm-svn: 289469
 2016-12-12 20:58:10 +00:00
Kostya Serebryany 2f962fe5f7 [libFuzzer] test cleanup 
llvm-svn: 289312
 2016-12-10 02:45:56 +00:00
Kostya Serebryany 61be0f947d [libFuzzer] switch all libFuzzer tests to use -fsanitize-coverage=trace-pc-guard. Support for the previosly used instrumentation will be removed in the following changes 
llvm-svn: 289311
 2016-12-10 02:26:23 +00:00
Kostya Serebryany bcfb0802e2 [libFuzzer] enable use_cmp by default 
llvm-svn: 285353
 2016-10-27 21:44:37 +00:00
Kostya Serebryany 117976818e [libFuzzer] add StandaloneFuzzTargetMain.c and a test for it 
llvm-svn: 285135
 2016-10-25 22:30:34 +00:00
Kostya Serebryany 2bfff021ad [libFuzzer] add a test for asan's strict_string_checks=1 
llvm-svn: 284902
 2016-10-22 00:05:44 +00:00
Kostya Serebryany 1c73f1bf27 [libFuzzer] refactoring to make -shrink=1 work for value profile, added a test. 
llvm-svn: 283409
 2016-10-05 22:56:21 +00:00
Kostya Serebryany 379359c53a [libFuzzer] add ShrinkValueProfileTest, move code around, NFC 
llvm-svn: 283286
 2016-10-05 01:09:40 +00:00
Kostya Serebryany 5ff481fd9e [libFuzzer] add -exit_on_src_pos to test libFuzzer itself, add a test script for RE2 that uses this flag 
llvm-svn: 282458
 2016-09-27 00:10:20 +00:00
Kostya Serebryany 3e36ec1d18 [libFuzzer] change trace-pc to use 8-byte guards 
llvm-svn: 281810
 2016-09-17 05:04:47 +00:00
Kostya Serebryany 0984517021 [libFuzzer] make caller-callee feedback work with trace-pc-guard 
llvm-svn: 281667
 2016-09-15 22:16:15 +00:00
Kostya Serebryany a5277d59d0 [libFuzzer] add 8-bit counters to trace-pc-guard handler 
llvm-svn: 281568
 2016-09-15 01:30:18 +00:00
Kostya Serebryany a00b243c75 [libFuzzer] start using trace-pc-guard as an alternative source of coverage 
llvm-svn: 281435
 2016-09-14 02:13:06 +00:00
Kostya Serebryany 76f425211e [libFuzzer] add a test that is built w/o coverage instrumentation but has the coverage rt (it should now fail with a descriptive message) 
llvm-svn: 272090
 2016-06-08 01:46:13 +00:00
Mike Aizatsky 3c1782f23b [libfuzzer] splitting fuzzer.test 
llvm-svn: 271697
 2016-06-03 18:05:22 +00:00
Kostya Serebryany f817731a19 [libFuzzer] when an invalid flag is given, warn, but don't crash 
llvm-svn: 271404
 2016-06-01 16:41:12 +00:00
Kostya Serebryany 470d04400e [libFuzzer] use __sanitizer_set_report_fd with -close_fd_mask. This allows us to keep asan reports when closing target's stderr 
llvm-svn: 271053
 2016-05-27 21:46:22 +00:00
Kostya Serebryany f1f3f93c9e [libFuzzer] reimplement the way we do -only_ascii to allow more 'const' in function declarations. Add a test for -only_ascii. NFC intended 
llvm-svn: 270900
 2016-05-26 20:03:02 +00:00
Kostya Serebryany ff2e6badbd [libFuzzer] print stats if we crash on empty input 
llvm-svn: 270639
 2016-05-25 00:15:36 +00:00
Kostya Serebryany 6289536922 [libFuzzer] print the file name before executing the input so that if there is a crash we know which files has caused it 
llvm-svn: 269450
 2016-05-13 18:10:33 +00:00
Kostya Serebryany baf7fd0b16 [libFuzzer] print stats after running individual inputs 
llvm-svn: 268547
 2016-05-04 20:44:50 +00:00
Kostya Serebryany 09087bba4d [libFuzzer] warn if the corpus is empty 
llvm-svn: 266670
 2016-04-18 21:14:11 +00:00
Kostya Serebryany b60397f54c [libFuzzer] add a better warning for command line flags with -- (two dashes) 
llvm-svn: 266480
 2016-04-15 21:56:29 +00:00
Kostya Serebryany 315167339e [libFuzzer] don't report memory leaks if we are dying due to a timeout (just use _Exit instead of exit in the timeout callback) 
llvm-svn: 264237
 2016-03-24 01:32:08 +00:00
Kostya Serebryany 49e409068a [libFuzzer] add a flag close_fd_mask so that we can silence spammy targets by closing stderr/stdout 
llvm-svn: 263831
 2016-03-18 20:58:29 +00:00
Kostya Serebryany c43b584c1c [libFuzzer] read corpus dirs recursively 
llvm-svn: 263773
 2016-03-18 01:36:00 +00:00
Kostya Serebryany c5575aabd6 [libFuzzer] deprecate several flags 
llvm-svn: 263739
 2016-03-17 19:59:39 +00:00
Kostya Serebryany 228d5b1ce4 [libFuzzer] add generic signal handlers so that libFuzzer can report at least something if ASan is not handlig the signals for us. Remove abort_on_timeout flag. 
llvm-svn: 262415
 2016-03-01 22:19:21 +00:00
Kostya Serebryany 66ff0756e4 [libFuzzer] add -print_final_stats=1 flag 
llvm-svn: 262084
 2016-02-26 22:42:23 +00:00
Kostya Serebryany 7ec0c56e07 [libFuzzer] get rid of UserSuppliedFuzzer; NFC 
llvm-svn: 260798
 2016-02-13 03:25:16 +00:00
Kostya Serebryany ecab57b3ce [libFuzzer] remove UserSuppliedFuzzer from the interface (it was a bad idea). 
llvm-svn: 260796
 2016-02-13 02:39:30 +00:00
Kostya Serebryany 22cc5e2375 [libFuzzer] provide a plain C interface for custom mutators (experimental) 
llvm-svn: 260794
 2016-02-13 02:29:38 +00:00
Kostya Serebryany 9d14e4bb15 [libFuzzer] make -runs=N flag also affect the simple runner (will execute every input N times) 
llvm-svn: 260649
 2016-02-12 02:32:03 +00:00
Kostya Serebryany ce925c580e [libFuzzer] hot fix a test 
llvm-svn: 259732
 2016-02-04 00:12:28 +00:00
Kostya Serebryany b92602ada0 [libFuzzer] don't write the test unit when a leak is detected (since we don't know which unit causes the leak) 
llvm-svn: 259731
 2016-02-04 00:02:17 +00:00
Kostya Serebryany bfbe7fc404 [libFuzzer] allow passing 1 or more files as individual inputs 
llvm-svn: 259459
 2016-02-02 03:03:47 +00:00
Kostya Serebryany 078e984d8d [libFuzzer] fail if the corpus dir does not exist 
llvm-svn: 259454
 2016-02-02 02:07:26 +00:00
Kostya Serebryany 311f27c0a8 [libFuzzer] use std::mt19937 for generating random numbers by default. Fix MyStoll to handle negative values. Use std::any_of instead of std::find_if 
llvm-svn: 258178
 2016-01-19 20:33:57 +00:00
Kostya Serebryany aca7696f4d [libFuzzer] introduce LLVMFuzzerInitialize 
llvm-svn: 257980
 2016-01-16 01:23:12 +00:00
Kostya Serebryany d50a3eedb4 [libFuzzer] make sure we find buffer overflow in the input buffer. Previously, re-using the same vector object was hiding buffer overflows (unless we used annotated vector) 
llvm-svn: 257701
 2016-01-13 23:02:30 +00:00