3  * This program test's basic kernel shadow stack support. It enables shadow
5  * Makefile doesn't compile with shadow stack support, so it doesn't rely on
7  * special glibc shadow stack support (longjmp(), swapcontext(), etc). Just
85  * For use in inline enablement of shadow stack.
87  * The program can't return from the point where shadow stack gets enabled
88  * because there will be no address on the shadow stack. So it can't use
146 	/* Switch back to original shadow stack */  in try_shstk()
157 		printf("[FAIL]\tError creating shadow stack: %d\n", errno);  in test_shstk_pivot()
171 	/* Read shadow stack, test if it's zero to not get read optimized out */  in test_shstk_faults()
204 	/* Corrupt shadow stack */  in violate_ss()
205 	printf("[INFO]\tCorrupting shadow stack\n");  in violate_ss()
211 	printf("[INFO]\tGenerated shadow stack violation successfully\n");  in segv_handler()
215 	/* Fix shadow stack */  in segv_handler()
261 	/* Fix shadow stack */  in test_access_fix_handler()
409 	/* mprotect a shadow stack as read only */  in test_mprotect()
423 	 * The shadow stack was reset above to resolve the fault, make the new one  in test_mprotect()
547  * This tests whether mmap will place other mappings in a shadow stack's guard
550  *   2. Map a shadow stack in the middle of the known empty area.
552  *      direction, filling any gaps until it encounters the shadow stack's
554  *   4. When a mapping lands below the shadow stack from step 2, then all
556  *      looked at the shadow stack gaps.
638 	 * shadow stack enabled, so disable shadow stack before siglongjmp().  in segv_gp_handler()
791 		printf("[SKIP]\tCould not enable Shadow stack\n");  in main()
797 		printf("[FAIL]\tDisabling shadow stack failed\n");  in main()
801 		printf("[SKIP]\tCould not re-enable Shadow stack\n");  in main()
837 		printf("[FAIL]\tShadow shadow stack gup\n");  in main()
843 		printf("[FAIL]\tShadow shadow mprotect test\n");  in main()
874 	 * Disable shadow stack before the function returns, or there will be a  in main()
875 	 * shadow stack violation.  in main()
879 		printf("[FAIL]\tDisabling shadow stack failed\n");  in main()