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Summary:
This patch adds the initial support for Fuchsia.
- LIBFUZZER_FUCHSIA is added as an OS type in FuzzerDefs.h
- Fuchsia is, by design, not POSIX compliant. However, it does use ELF and
supports common POSIX I/O functions. Thus, FuzzerExtFunctions.h and
FuzzerIO.h are implemented by extending the header guards in
FuzzerExtFunctionsWeak.cpp and FuzzerIOPosix.cpp to include
LIBFUZZER_FUCHSIA.
- The platform-specific portions of FuzzerUtil.h are implemented by
FuzzerUtilFuchsia.cpp, which makes use of exception ports, syscalls, and
the launchpad library.
- The experimental equivalence server is not currently supported, so
FuzzerShmem.h is implemented by stub methods in FuzzerShmemFuchsia.cpp.
Any future implementation will likely involve VMOs.
Tested with ASAN/SanCov on Fuchsia/x86-64 with the canonical toy fuzzer.
Patch By: aarongreen
Reviewers: kcc, morehouse, flowerhack, phosek
Reviewed By: kcc, phosek, Eugene.Zelenko
Subscribers: srhines, mgorny, Eugene.Zelenko
Differential Revision: https://reviews.llvm.org/D40974
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@320210 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
For some filesystems, readdir will not populate dirent::d_type with valuable information. This causes libfuzzer to proceed with an empty corpus, instead of the file it contains.
This has been tested on a server using XFS.
It should fix https://bugs.llvm.org//show_bug.cgi?id=25991
Reviewers: kcc
Reviewed By: kcc
Differential Revision: https://reviews.llvm.org/D40028
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@318303 91177308-0d34-0410-b5e6-96231b3b80d8
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files and these executing all files, load and execute them one-by-one. This should reduce the memory usage in many cases
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@312033 91177308-0d34-0410-b5e6-96231b3b80d8
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Avoids ODR violations causing spurious ASAN warnings.
Differential Revision: https://reviews.llvm.org/D37086
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@311866 91177308-0d34-0410-b5e6-96231b3b80d8
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This reverts commit 3539efc2f2218dba2bcbd645d0fe276f2b5cf588.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@311831 91177308-0d34-0410-b5e6-96231b3b80d8
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Avoids ODR violations causing spurious ASAN container overflow warnings.
Differential Revision: https://reviews.llvm.org/D37086
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@311830 91177308-0d34-0410-b5e6-96231b3b80d8
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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
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@311407 91177308-0d34-0410-b5e6-96231b3b80d8
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