valid_user_frame 1809 arch/sparc/kernel/perf_event.c 		if (!valid_user_frame(usf, sizeof(sf)))
valid_user_frame 2450 arch/x86/events/core.c 		if (!valid_user_frame(fp, sizeof(frame)))
valid_user_frame 2508 arch/x86/events/core.c 		if (!valid_user_frame(fp, sizeof(frame)))