test: use mmap() directly in syzbot generated code

Guillem reports that some new 32-bit architectures like armel and armhf
don't have mmap, just mmap2. Just use mmap() and let libc deal with
it, there's no reason why we need to call the specific mmap() system
call.

Reported-by: Guillem Jover <guillem@hadrons.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 files changed