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10 Commits

Author SHA1 Message Date
Jonathan Metzman
23bee0b0cf [fuzzer] Add basic support for emscripten. 
Summary:
Add basic support for emscripten.

This enables libFuzzer to build (using build.sh) for emscripten and fuzz
a target compiled with
-fsanitize-coverage=inline-8bit-counters.

Basic fuzzing and bug finding work with this commit.
RSS limit and timeouts will not work because they depend on system
functions that are not implemented/widely supported in emscripten.

Reviewers: kcc, vitalybuka, hctim

Reviewed By: hctim

Subscribers: #sanitizers, llvm-commits

Tags: #sanitizers, #llvm

Differential Revision: https://reviews.llvm.org/D71285
 2019-12-12 08:56:47 -08:00
Matt Morehouse
1c8e05110c [libFuzzer] Remove lazy counters. 
Summary: Lazy counters haven't improved performance for large fuzz targets.

Reviewers: kcc

Reviewed By: kcc

Subscribers: llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D67476

llvm-svn: 373403
 2019-10-01 22:49:06 +00:00
Kostya Serebryany
23482e1d07 [libFuzzer] set libFuzzer's own SEGV handler even one is already present, but call that handler from ours (unless we are unprotecting lazy counters). Call ProtectLazyCounters later, so that it runs after the initialization code in the target. 
llvm-svn: 352713
 2019-01-31 01:40:14 +00:00
Kostya Serebryany
8da9479e40 [libFuzzer] experimental performance optimization -lazy_counters, off by default. Posix-only for now, tested on Linux 
llvm-svn: 352700
 2019-01-31 00:09:43 +00:00
Chandler Carruth
2946cd7010 Update the file headers across all of the LLVM projects in the monorepo 
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.

llvm-svn: 351636
 2019-01-19 08:50:56 +00:00
Vitaly Buka
9802089e13 libFuzzer, OpenBSD support 
Summary:
- Enabling libfuzzer on OpenBSD
- OpenBSD can t support asan, msan ... the tests can t be run.

Patch by David CARLIER

Reviewers: eugenis, phosek, vitalybuka

Reviewed By: vitalybuka

Subscribers: srhines, mgorny, krytarowski, llvm-commits, #sanitizers

Differential Revision: https://reviews.llvm.org/D44877

llvm-svn: 329631
 2018-04-09 22:38:26 +00:00
Kamil Rytarowski
e81e944199 lib Fuzzer FreeBSD support 
Summary: Patch by David CARLIER

Reviewers: vitalybuka, kcc, dim, emaste, davide, morehouse, george.karpenkov

Reviewed By: morehouse

Subscribers: george.karpenkov, kubamracek, srhines, mgorny, emaste, krytarowski

Differential Revision: https://reviews.llvm.org/D41642

llvm-svn: 322380
 2018-01-12 17:15:05 +00:00
Kostya Serebryany
a2ca2dcc46 [libFuzzer] handle SIGUSR1/SIGUSR2 and try to exit grafully on these signals 
llvm-svn: 317829
 2017-11-09 20:30:19 +00:00
Kostya Serebryany
25d6b95679 [libFuzzer] remove a couple of reduntant includes 
llvm-svn: 312848
 2017-09-09 00:56:34 +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