diff options
Diffstat (limited to 'qemu_mode')
| -rw-r--r-- | qemu_mode/patches/afl-qemu-cpu-inl.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/qemu_mode/patches/afl-qemu-cpu-inl.h b/qemu_mode/patches/afl-qemu-cpu-inl.h index d73566fc..ee3ec44e 100644 --- a/qemu_mode/patches/afl-qemu-cpu-inl.h +++ b/qemu_mode/patches/afl-qemu-cpu-inl.h @@ -293,6 +293,7 @@ static void print_mappings(void) { void afl_forkserver(CPUState *cpu) { + u32 map_size = 0; static unsigned char tmp[4] = {0, 0, 0, 0}; if (forkserver_installed == 1) return; @@ -306,6 +307,15 @@ void afl_forkserver(CPUState *cpu) { int t_fd[2]; u8 child_stopped = 0; + // if in the future qemu has non-collding coverage then switch MAP_SIZE + // with the max ID value + if (MAP_SIZE <= 0x800000) { + + map_size = (FS_OPT_ENABLED | FS_OPT_MAPSIZE | FS_OPT_SET_MAPSIZE(MAP_SIZE)); + memcpy(tmp, &map_size, 4); + + } + /* Tell the parent that we're alive. If the parent doesn't want to talk, assume that we're not running in forkserver mode. */ |