llvm-project.git/compiler-rt/lib/fuzzer/FuzzerUtilLinux.cpp, branch main

[compiler-rt] reimplements GetMemoryProfile for netbsd. (#84841)

2024-03-13T09:25:43+00:00

The actual solution relies on the premise /proc/self/smaps existence.
instead relying on native api like freebsd.
fixing fuzzer build too.

[Fuzzer] Assign names to workers

2023-07-26T04:49:35+00:00

Allow to have a name for workers in case the fuzzed code is itself using threads.

Reviewers: vitalybuka

Reviewed-By: vitalybuka

Differential Revision: https://reviews.llvm.org/D155754

[Libfuzzer] Include signal.h for SIGINT

2022-09-04T16:31:15+00:00

Or else compiler-rt/lib/fuzzer/FuzzerUtilLinux.cpp fails to compile
on FreeBSD.

Libfuzzer fix for Ctrl + c not working with -fork and -ignore_crashes=1

2022-08-16T23:45:39+00:00

In some cases running Libfuzzer in fork mode with -ignore_crashes=1 counts ctrl+c as crash and restarts.

Thread: https://github.com/google/oss-fuzz/issues/4547

Credit: Marcel Boehme 

Reviewed By: vitalybuka

Differential Revision: https://reviews.llvm.org/D130990

[Sanitizers] Remove OpenBSD support (new attempt)

2020-10-20T10:16:09+00:00

- Fixing VS compiler and other cases settings this time.

Reviewers: dmajor, hans

Reviewed By: hans

Differential Revision: https://reviews.llvm.org/D89759

Revert "[Sanitizers] Remove OpenBSD support" + 1

2020-10-19T23:11:21+00:00

Revert "Fix compiler-rt build on Windows after D89640"

This reverts commit a7acee89d68473183cc5021d952a56cdf0ae27d3.
This reverts commit d09b08919ca6e206cd981fdea8b19b1d1188e325.

Reason: breaks Linux / x86_64 build.

[Sanitizers] Remove OpenBSD support

2020-10-18T13:57:07+00:00

- Removing unused and unusable code.

Reviewers: krytarowski

Reviewed By: krytarowski

Differential Revision: https://reviews.llvm.org/D89640

[libFuzzer] Separate platform related macros out from FuzzerDefs.h into FuzzerPlatform.h, and adjust includes in other files.

2020-07-14T21:31:56+00:00

Summary: This patch separates platform related macros in lib/fuzzer/FuzzerDefs.h into lib/fuzzer/FuzzerPlatform.h, and use FuzzerPlatform.h where necessary. This separation helps when compiling libFuzzer's interceptor module (under review); an unnecessary include of standard headers (such as string.h) may produce conflicts/ambiguation with the interceptor's declarations/definitions of library functions, which complicates interceptor implementation.

Reviewers: morehouse, hctim

Reviewed By: morehouse

Subscribers: krytarowski, #sanitizers

Tags: #sanitizers

Differential Revision: https://reviews.llvm.org/D83805

[fuzzer] Add basic support for emscripten.

2019-12-12T16:56:47+00:00

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

[libFuzzer] don't use /dev/null for DiscardOuput in Fuchsia.

2019-11-22T00:56:05+00:00

Summary:

This commit moves the `DiscardOutput` function in FuzzerIO to
FuzzerUtil, so fuchsia can have its own specialized version.

In fuchsia, accessing `/dev/null` is not supported, and there's nothing
similar to a file that discards everything that is written to it. The
way of doing something similar in fuchsia is by using `fdio_null_create`
and binding that to a file descriptor with `fdio_bind_to_fd`.

This change should fix one of the issues with the `-close_fd_mask` flag
in libfuzzer, in which closing stdout was not working due to
`fopen("/dev/null", "w")` returning `NULL`.

Reviewers: kcc, aarongreen

Subscribers: #sanitizers, llvm-commits

Tags: #sanitizers, #llvm

Differential Revision: https://reviews.llvm.org/D69593