diff options
Diffstat (limited to 'executor/executor_linux.cc')
| -rw-r--r-- | executor/executor_linux.cc | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/executor/executor_linux.cc b/executor/executor_linux.cc index 8fec5ac6d..4ca358231 100644 --- a/executor/executor_linux.cc +++ b/executor/executor_linux.cc @@ -56,9 +56,13 @@ int main(int argc, char** argv) // If it is corrupted ipc package will fail to parse its contents and panic. // But fuzzer constantly invents new ways of how to currupt the region, // so we map the region at a (hopefully) hard to guess address surrounded by unmapped pages. - output_data = (uint32*)mmap(kOutputDataAddr, kMaxOutput, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_FIXED, kOutFd, 0); + output_data = (uint32*)mmap(kOutputDataAddr, kMaxOutput, + PROT_READ | PROT_WRITE, MAP_SHARED | MAP_FIXED, kOutFd, 0); if (output_data != kOutputDataAddr) fail("mmap of output file failed"); + if (mmap((void*)SYZ_DATA_OFFSET, SYZ_NUM_PAGES * SYZ_PAGE_SIZE, PROT_READ | PROT_WRITE, + MAP_ANON | MAP_PRIVATE | MAP_FIXED, -1, 0) != (void*)SYZ_DATA_OFFSET) + fail("mmap of data segment failed"); // Prevent random programs to mess with these fds. // Due to races in collider mode, a program can e.g. ftruncate one of these fds, // which will cause fuzzer to crash. |