diff options
Diffstat (limited to 'executor/executor_linux.h')
| -rw-r--r-- | executor/executor_linux.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/executor/executor_linux.h b/executor/executor_linux.h index e952e6ea9..9784700ba 100644 --- a/executor/executor_linux.h +++ b/executor/executor_linux.h @@ -59,13 +59,13 @@ static void os_init(int argc, char** argv, char* data, size_t data_size) // One observed case before: executor had a mapping above the data mapping (output region), // while C repros did not have that mapping above, as the result in one case VMA had next link, // while in the other it didn't and it caused a bug to not reproduce with the C repro. - void* got = mmap(data - SYZ_PAGE_SIZE, SYZ_PAGE_SIZE, PROT_NONE, MAP_ANON | MAP_PRIVATE | MAP_FIXED, -1, 0); + void* got = mmap(data - SYZ_PAGE_SIZE, SYZ_PAGE_SIZE, PROT_NONE, MAP_ANON | MAP_PRIVATE | MAP_FIXED_EXCLUSIVE, -1, 0); if (data - SYZ_PAGE_SIZE != got) failmsg("mmap of left data PROT_NONE page failed", "want %p, got %p", data - SYZ_PAGE_SIZE, got); - got = mmap(data, data_size, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANON | MAP_PRIVATE | MAP_FIXED, -1, 0); + got = mmap(data, data_size, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANON | MAP_PRIVATE | MAP_FIXED_EXCLUSIVE, -1, 0); if (data != got) failmsg("mmap of data segment failed", "want %p, got %p", data, got); - got = mmap(data + data_size, SYZ_PAGE_SIZE, PROT_NONE, MAP_ANON | MAP_PRIVATE | MAP_FIXED, -1, 0); + got = mmap(data + data_size, SYZ_PAGE_SIZE, PROT_NONE, MAP_ANON | MAP_PRIVATE | MAP_FIXED_EXCLUSIVE, -1, 0); if (data + data_size != got) failmsg("mmap of right data PROT_NONE page failed", "want %p, got %p", data + data_size, got); |