1 // SPDX-License-Identifier: GPL-2.0
29 #include <signal.h>
35 #include <sys/signal.h>
148 	ssp -= 8;  in try_shstk()
161 	try_shstk((unsigned long)shstk + SS_SIZE - 8);  in test_shstk_pivot()
236 	signal(SIGSEGV, SIG_DFL);  in test_shstk_violation()
330 	if (fd == -1)  in test_gup()
338 	printf("[INFO]\tGup read -> shstk access success\n");  in test_gup()
345 	printf("[INFO]\tGup write -> shstk access success\n");  in test_gup()
352 	printf("[INFO]\tGup read -> write access success\n");  in test_gup()
359 	printf("[INFO]\tGup write -> write access success\n");  in test_gup()
368 		if (fd == -1)  in test_gup()
388 	printf("[INFO]\tCow gup write -> write access success\n");  in test_gup()
392 	signal(SIGSEGV, SIG_DFL);  in test_gup()
419 		printf("[FAIL]\tShadow stack access to read-only memory succeeded\n");  in test_mprotect()
425 	 * read-only.  in test_mprotect()
446 	signal(SIGSEGV, SIG_DFL);  in test_mprotect()
529 	signal(SIGSEGV, SIG_DFL);  in test_userfaultfd()
537 	signal(SIGSEGV, SIG_DFL);  in test_userfaultfd()
548  * This tests whether mmap will place other mappings in a shadow stack's guard
554  *      guard gap.
566 			 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);  in test_guard_gap_other_gaps()
575 				MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);  in test_guard_gap_other_gaps()
579 		cur->mapping = test_map;  in test_guard_gap_other_gaps()
581 		cur->next = head;  in test_guard_gap_other_gaps()
587 		head = cur->next;  in test_guard_gap_other_gaps()
588 		munmap(cur->mapping, PAGE_SIZE);  in test_guard_gap_other_gaps()
594 	if (shstk - test_map - PAGE_SIZE != PAGE_SIZE)  in test_guard_gap_other_gaps()
602 /* Tests respecting the guard gap of the mapping getting placed */
610 			 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);  in test_guard_gap_new_mappings_gaps()
615 			   MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);  in test_guard_gap_new_mappings_gaps()
628 		cur->mapping = test_map;  in test_guard_gap_new_mappings_gaps()
630 		cur->next = head;  in test_guard_gap_new_mappings_gaps()
634 			printf("[INFO]\tNew mapping has other mapping in guard gap!\n");  in test_guard_gap_new_mappings_gaps()
642 		head = cur->next;  in test_guard_gap_new_mappings_gaps()
643 		munmap(cur->mapping, PAGE_SIZE);  in test_guard_gap_new_mappings_gaps()
662  * Call 32 bit signal handler to get 32 bit signals ABI. Make sure
695 	siglongjmp(jmp_buffer, -1);  in segv_gp_handler()
709 	sa32->sa_flags = SA_SIGINFO;  in test_32bit()
725 	sa32->sa_handler = (void *)sa32;  in test_32bit()
745 		err = -errno;  in parse_uint_from_file()
751 		err = err == EOF ? -EIO : -errno;  in parse_uint_from_file()
783 		return -errno;  in get_uprobe_offset()
785 	while (fscanf(f, "%zx-%zx %s %zx %*[^\n]\n", &start, &end, buf, &base) == 4) {  in get_uprobe_offset()
795 		return -ESRCH;  in get_uprobe_offset()
797 	return (uintptr_t)addr - start + base;  in get_uprobe_offset()
823 		if (type == -ENOENT)  in test_uretprobe()
849 	fd = syscall(__NR_perf_event_open, &attr, 0 /* pid */, -1 /* cpu */,  in test_uretprobe()
850 		     -1 /* group_fd */, PERF_FLAG_FD_CLOEXEC);  in test_uretprobe()
870 	signal(SIGSEGV, SIG_DFL);  in test_uretprobe()
912 	while (waitpid(pid, &status, 0) != -1 && WSTOPSIG(status) != SIGTRAP);  in test_ptrace()
993 		printf("[SKIP]\tCould not re-enable Shadow stack\n");  in main()