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265 Commits

Author SHA1 Message Date
Kostya Serebryany
51a780a910 [libFuzzer] add a license header to afl/afl_driver.cpp 
llvm-svn: 270598
 2016-05-24 19:05:25 +00:00
Dan Liew
6e0cb44dfd [LibFuzzer] Fix implementation of `GetPeakRSSMb()` on Mac OSX. 
On Linux ``rusage.ru_maxrss`` is in KiB but on Mac OSX it is in bytes.

Differential Revision: http://reviews.llvm.org/D20410

llvm-svn: 270173
 2016-05-20 01:37:54 +00:00
Dan Liew
5f9fb67e87 [LibFuzzer] Fix `NumberOfCpuCores()` on Mac OSX. 
The ``nprocs`` command does not exist under Mac OSX so use
``sysctl`` instead on that platform.

Whilst I'm here

* Use ``pclose()`` instead of ``fclose()`` which the ``popen()``
  documentation says should be used.
* Check for errors that were previously unhandled.

Differential Revision: http://reviews.llvm.org/D20409

llvm-svn: 270172
 2016-05-20 01:30:36 +00:00
Dan Liew
2063e3f97b [LibFuzzer] 
Work around crashes in ``__sanitizer_malloc_hook()`` under Mac OSX.

Under Mac OSX we intercept calls to malloc before thread local
storage is initialised leading to a crash when accessing
``AllocTracer``. To workaround this ``AllocTracer`` is only accessed
in the hook under Linux. For symmetry ``__sanitizer_free_hook()``
is also modified in the same way.

To support this change a set of new macros
LIBFUZZER_LINUX and LIBFUZZER_APPLE has been defined which can be
used to check the target being compiled for.

Differential Revision: http://reviews.llvm.org/D20402

llvm-svn: 270145
 2016-05-19 22:00:33 +00:00
Kostya Serebryany
1748b79bc0 [libFuzzer] do the merge faster and a bit less precise 
llvm-svn: 269497
 2016-05-13 22:11:23 +00:00
Kostya Serebryany
409e80a364 [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
50c6e0a004 [libFuzzer] simplify FuzzerInterface.h 
llvm-svn: 269448
 2016-05-13 18:04:35 +00:00
Kostya Serebryany
ad8675582f [libFuzzer] add a driver file to use AFL on LLVMFuzzerTestOneInput 
llvm-svn: 269141
 2016-05-10 23:46:50 +00:00
Mike Aizatsky
af34cb696d [libfuzzer] Refactoring coverage state-management code. 
It is now less state-dependent and will allow easier comparing of
coverages of different units.

Differential Revision: http://reviews.llvm.org/D20085

llvm-svn: 269140
 2016-05-10 23:43:15 +00:00
Kostya Serebryany
a225a8d958 [libFuzzer] add a test for libFuzzer+ubsan, extend the docs on using libFuzzer+ubsan 
llvm-svn: 268968
 2016-05-09 21:02:36 +00:00
Kostya Serebryany
bd6b8a3638 [libFuzzer] better document the -merge=1 flag 
llvm-svn: 268957
 2016-05-09 19:11:36 +00:00
Kostya Serebryany
6a10031791 [libFuzzer] enhance -rss_limit_mb and enable by default. Now it will print the OOM reproducer. 
llvm-svn: 268821
 2016-05-06 23:38:07 +00:00
Kostya Serebryany
2583e597c6 [libFuzzer] add exeprimental -rss_limit_mb flag to fight against OOMs 
llvm-svn: 268807
 2016-05-06 21:58:35 +00:00
Kostya Serebryany
29374da006 [libFuzzer] print stats after running individual inputs 
llvm-svn: 268547
 2016-05-04 20:44:50 +00:00
Kostya Serebryany
6e5d1a22c3 [libFuzzer] enable detect_leaks=1, add proper docs 
llvm-svn: 268088
 2016-04-29 18:49:55 +00:00
Kostya Serebryany
e19ab0886a [libFuzzer] disable leak detection if we have tried it for 1000 times w/o finding a leak [part 2] 
llvm-svn: 267771
 2016-04-27 19:52:56 +00:00
Kostya Serebryany
51ec9a55f7 [libFuzzer] disable leak detection if we have tried it for 1000 times w/o finding a leak 
llvm-svn: 267770
 2016-04-27 19:52:34 +00:00
Kostya Serebryany
1b0fefb3d9 [libFuzzer] remove dead code 
llvm-svn: 267455
 2016-04-25 19:41:45 +00:00
Kostya Serebryany
13bad441e8 [libFuzzer] added -detect_leaks flag (0 by default for now). When enabled, it will help finding leaks while fuzzing 
llvm-svn: 266838
 2016-04-20 00:24:21 +00:00
Kostya Serebryany
f09765cd99 [libFuzzer] try to print correct time in seconds when reporting a timeout. Don't report timeouts while still loading the corpus. 
llvm-svn: 266693
 2016-04-18 22:50:39 +00:00
Kostya Serebryany
3cb8d702c9 [libFuzzer] warn if the corpus is empty 
llvm-svn: 266670
 2016-04-18 21:14:11 +00:00
Mehdi Amini
9ff867f98c [NFC] Header cleanup 
Removed some unused headers, replaced some headers with forward class declarations.

Found using simple scripts like this one:
clear && ack --cpp -l '#include "llvm/ADT/IndexedMap.h"' | xargs grep -L 'IndexedMap[<]' | xargs grep -n --color=auto 'IndexedMap'

Patch by Eugene Kosov <claprix@yandex.ru>

Differential Revision: http://reviews.llvm.org/D19219

From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 266595
 2016-04-18 09:17:29 +00:00
Kostya Serebryany
c84bd01bcd [libFuzzer] add a better warning for command line flags with -- (two dashes) 
llvm-svn: 266480
 2016-04-15 21:56:29 +00:00
Hans Wennborg
338186f6bb Remove redundant .c_str(), as suggested by PR25633 
llvm-svn: 265988
 2016-04-11 20:35:17 +00:00
Mike Aizatsky
3b54b31344 [libfuzzer] defensive assert 
llvm-svn: 265866
 2016-04-08 23:32:24 +00:00
Mike Aizatsky
347b1d5964 [libfuzzer] adding license headers to cpp files 
Differential Revision: http://reviews.llvm.org/D18705

llvm-svn: 265174
 2016-04-01 18:38:58 +00:00
Kostya Serebryany
c35be8422b [libFuzzer] more docs 
llvm-svn: 264803
 2016-03-29 23:07:36 +00:00
Kostya Serebryany
cd9a640c0e [libFuzzer] use fflush after every Printf 
llvm-svn: 264459
 2016-03-25 20:31:26 +00:00
Kostya Serebryany
6ff8ede73a [libFuzzer] handle SIGTERM 
llvm-svn: 264338
 2016-03-24 21:03:58 +00:00
Kostya Serebryany
0cd69a5030 [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
da046b76fb [libFuzzer] use fdopen+vfprintf instead of fsnprintf+write 
llvm-svn: 264230
 2016-03-24 00:57:32 +00:00
Kostya Serebryany
01af064f8d [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
Benjamin Kramer
fe1074fc43 [Fuzzer] Guard no_sanitize_memory attributes behind __has_feature. 
Otherwise GCC fails to build it because it doesn't know the attribute.

llvm-svn: 263787
 2016-03-18 14:19:19 +00:00
Kostya Serebryany
59ba2beb86 [libFuzzer] read corpus dirs recursively 
llvm-svn: 263773
 2016-03-18 01:36:00 +00:00
Kostya Serebryany
c99e69af78 [libFuzzer] improve -merge functionality 
llvm-svn: 263769
 2016-03-18 00:23:29 +00:00
Kostya Serebryany
e634bbeadd [libFuzzer] deprecate several flags 
llvm-svn: 263739
 2016-03-17 19:59:39 +00:00
Kostya Serebryany
d8cee1fdf1 [libFuzzer] add __attribute__((no_sanitize_memory)) to two functions that may be called from signal handler(s) or from msan. This will hopefully avoid msan false reports which I can't reproduce 
llvm-svn: 263737
 2016-03-17 19:42:35 +00:00
Mike Aizatsky
34cbd6a60e [libfuzzer] speeding up corpus load 
llvm-svn: 263591
 2016-03-15 21:47:21 +00:00
Kostya Serebryany
b66ed58c06 [libFuzzer] use max_len exactly equal to the max size of input. Fix 32-bit build 
llvm-svn: 263518
 2016-03-15 01:28:00 +00:00
Kostya Serebryany
5b93d4b15a [libFuzzer] try to use max_len based on the items of the corpus instead of blindly defaulting to 64 bytes. 
llvm-svn: 263323
 2016-03-12 01:57:04 +00:00
Mike Aizatsky
a4ce43c759 [libfuzzer] adding std:string to allowed adaptable argument. 
llvm-svn: 262757
 2016-03-04 23:18:01 +00:00
Kostya Serebryany
c6f46ed530 [libFuzzer] log less when re-loading files; fix a silly bug: when running single files actually run all of them, not just the first one 
llvm-svn: 262754
 2016-03-04 22:35:40 +00:00
Mike Aizatsky
f9401b724f [libfuzzer] arbitrary function adapter. 
The adapter automates converting sequence of bytes into arbitrary
arguments.

Differential Revision: http://reviews.llvm.org/D17829

llvm-svn: 262673
 2016-03-03 23:45:29 +00:00
Kostya Serebryany
fc674d4015 [libFuzzer] when interrupted, call _Exit() instead of exit() 
llvm-svn: 262667
 2016-03-03 22:36:37 +00:00
Kostya Serebryany
7dc222ec7a [libFuzzer] add -Werror for libFuzzer build rule 
llvm-svn: 262517
 2016-03-02 21:08:16 +00:00
Dmitry Vyukov
d77444bc90 libfuzzer: fix compiler warnings 
- unused sigaction/setitimer result (used in assert)
- unchecked fscanf return value
- signed/unsigned comparison

llvm-svn: 262472
 2016-03-02 09:54:40 +00:00
Kostya Serebryany
96af1208c1 [libFuzzer] deprecate exit_on_first flag 
llvm-svn: 262417
 2016-03-01 22:33:14 +00:00
Kostya Serebryany
d5755334e5 [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
306353eaf8 [libFuzzer] remove FuzzerSanitizerOptions.cpp 
llvm-svn: 262354
 2016-03-01 17:46:32 +00:00
Rafael Espindola
c165498992 Refactor duplicated code for linking with pthread. 
llvm-svn: 262344
 2016-03-01 15:54:40 +00:00