Corpus for sigaltstack:

Coverage	Program
1486	syz_io_uring_setup-syz_io_uring_submit-sigaltstack
128	syz_io_uring_setup-remap_file_pages-sigaltstack
74	syz_io_uring_setup-syz_io_uring_submit-sigaltstack
59	syz_io_uring_setup-syz_io_uring_submit-sigaltstack