Commit Graph

28 Commits

Author SHA1 Message Date
Jonathan Metzman 518514e81d [libFuzzer][Windows] Port fork mode to Windows
Summary:
Port libFuzzer's fork mode to Windows.
Implement Windows versions of MkDir, RmDir, and IterateDirRecursive to do this.
Don't print error messages under new normal uses of FileSize (on a non-existent file).
Implement portable way of piping output to /dev/null.
Fix test for Windows and comment fork-sigusr.test on why it won't be ported to Win.

Reviewers: zturner

Reviewed By: zturner

Subscribers: kcc, zturner, jdoerfert, #sanitizers, llvm-commits

Tags: #sanitizers, #llvm

Differential Revision: https://reviews.llvm.org/D58513

llvm-svn: 355019
2019-02-27 19:27:16 +00:00
Kostya Serebryany 77cbc62544 [libFuzzer] print new functions as they are discovered in the fork mode
llvm-svn: 354092
2019-02-15 01:22:00 +00:00
Kostya Serebryany b96b10d1a3 [libFuzzer] fix the unit tests
llvm-svn: 354088
2019-02-15 00:15:13 +00:00
Kostya Serebryany 8c2791469d [libFuzzer] when doing the merge, keep track of the coveraged edges, not just features
llvm-svn: 354087
2019-02-15 00:08:16 +00:00
Kostya Serebryany 96f81bc679 [libFuzzer] when doing the merge, keep track of the coveraged edges, not just features
llvm-svn: 354076
2019-02-14 23:12:33 +00:00
Kostya Serebryany d085748484 [libFuzzer] a bit of refactoring of the fork mode
llvm-svn: 353910
2019-02-13 04:04:45 +00:00
Kostya Serebryany 2b9a8f37a4 [libFuzzer] make the fork mode less verbose
llvm-svn: 353794
2019-02-12 03:12:40 +00:00
Kostya Serebryany cdbb9dc962 [libFuzzer] teach the fork mode to ignore OOMs and timeouts
llvm-svn: 353792
2019-02-12 02:18:53 +00:00
Kostya Serebryany 63f48717b5 [libFuzzer] extend the -fork=1 functionality. Still not fully usable, but good enough for the first unit test
llvm-svn: 353775
2019-02-12 00:12:33 +00:00
Kostya Serebryany 0fda9dcbe9 [libFuzzer] more refactoring; change some of the exit codes (timeout, OOM, interrupt) so that the parent process can distinguish those
llvm-svn: 353584
2019-02-09 00:16:21 +00:00
Kostya Serebryany 114cfafe05 [libFuzzer] refactor the merging code, NFC
llvm-svn: 353576
2019-02-08 22:59:03 +00:00
Kostya Serebryany b1e8b8149b [libFuzzer] remove two unused experimental flags
llvm-svn: 353573
2019-02-08 22:02:37 +00:00
Kostya Serebryany f762a11544 [libFuzzer] introduce an experimental mode -fork=1, where fuzzing happens in a subprocess (still running multiple inputs per process), thus making the fuzzing more resilient to timeouts and OOMs. This is just a skeleton of the code, and some associated refactoring, not a fully working feature yet.
llvm-svn: 353570
2019-02-08 21:27:23 +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
Mandeep Singh Grang a9e74a9165 Revert "[compiler-rt] Change std::sort to llvm::sort in response to r327219"
This reverts commit 2ee210e1963e03aacc0f71c50e4994bb5c66586e.

llvm-svn: 327936
2018-03-20 01:17:18 +00:00
Mandeep Singh Grang dc09ebf71b [compiler-rt] Change std::sort to llvm::sort in response to r327219
Summary:
r327219 added wrappers to std::sort which randomly shuffle the container before sorting.
This will help in uncovering non-determinism caused due to undefined sorting
order of objects having the same key.

To make use of that infrastructure we need to invoke llvm::sort instead of std::sort.

Reviewers: kcc, rsmith, RKSimon, eugenis

Reviewed By: RKSimon

Subscribers: efriedma, kubamracek, dberris, #sanitizers, llvm-commits

Differential Revision: https://reviews.llvm.org/D44360

llvm-svn: 327929
2018-03-20 00:44:59 +00:00
Matt Morehouse 04304d129b [libFuzzer] Encapsulate commands in a class.
Summary:
To be more portable (especially w.r.t. platforms without system()),
commands should be managed programmatically rather than via string
manipulation on the command line. This change introduces
Fuzzer::Command, with methods to manage arguments and flags, set output
options, and execute the command.

Patch By: aarongreen

Reviewers: kcc, morehouse

Reviewed By: kcc, morehouse

Subscribers: llvm-commits, mgorny

Differential Revision: https://reviews.llvm.org/D40103

llvm-svn: 319680
2017-12-04 19:25:59 +00:00
Kostya Serebryany 8eb9ca2580 [libFuzzer] respect max_len during merge
llvm-svn: 318302
2017-11-15 16:42:52 +00:00
Kostya Serebryany 54a8456005 [libFuzzer] make sure to flush IO when done merging one file
llvm-svn: 317835
2017-11-09 21:30:33 +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 3ac31d4453 [libFuzzer] allow merge to resume after being preempted
llvm-svn: 317767
2017-11-09 05:49:28 +00:00
Kostya Serebryany 68fdef1f7a [libFuzzer] allow user to specify the merge control file
llvm-svn: 317747
2017-11-09 01:05:29 +00:00
Kostya Serebryany bcd78491ef [libFuzzer] minor refactoring, NFC
llvm-svn: 313406
2017-09-15 22:10:36 +00:00
Kostya Serebryany 97b8b2daff [libFuzzer] reduce the size of the merge control file by not dumping redundant features into it
llvm-svn: 313403
2017-09-15 22:02:26 +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
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