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Differential D4936

fuzz: try setting PYTHONNOUSERSITE=1 to avoid loading site-packages
ClosedPublic

Authored by durin42 on Oct 11 2018, 7:27 AM.

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rHGadfe4bb53a47: fuzz: try setting PYTHONNOUSERSITE=1 to avoid loading site-packages
Summary

Right now the fuzzer is crashing trying to look up the home dir for
uid 0, which is breaking in the fuzz environment.

Diff Detail

Repository
rHG Mercurial
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Automatic diff as part of commit; lint not applicable.
Unit
Automatic diff as part of commit; unit tests not applicable.

Event Timeline

durin42 created this revision.Oct 11 2018, 7:27 AM
Closed by commit rHGadfe4bb53a47: fuzz: try setting PYTHONNOUSERSITE=1 to avoid loading site-packages (authored by durin42). · Explain WhyOct 11 2018, 7:29 AM
This revision was automatically updated to reflect the committed changes.

Revision Contents
Changeset List

PathPackages
Mcontrib/fuzz/manifest.cc (1 line)

Diff 11799

contrib/fuzz/manifest.cc

char wd[8192]; char wd[8192];
getcwd(wd, 8192); getcwd(wd, 8192);
pypath = std::string(wd) + subdir; pypath = std::string(wd) + subdir;
} else { } else {
pypath = selfpath.substr(0, pos) + subdir; pypath = selfpath.substr(0, pos) + subdir;
} }
strncpy(cpypath, pypath.c_str(), pypath.size()); strncpy(cpypath, pypath.c_str(), pypath.size());
setenv("PYTHONPATH", cpypath, 1); setenv("PYTHONPATH", cpypath, 1);
setenv("PYTHONNOUSERSITE", "1", 1);
Py_SetPythonHome(cpypath); Py_SetPythonHome(cpypath);
Py_InitializeEx(0); Py_InitializeEx(0);
return 0; return 0;
} }
int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size)
{ {
initparsers(); initparsers();