---

yaml
---
r: 225927
b: refs/heads/master
c: 3ce70b2
h: refs/heads/master
i:
  225925: 68cd54b
  225923: b2ee34c
  225919: 03043f6
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 9ebb3cbcc39d4e61ae6751167086acfb5c201e6f
+refs/heads/master: 3ce70b2e24cd35cc9f2df8cf5205b8ab4e6178e1

trunk/arch/arm/kernel/hw_breakpoint.c

@@ -622,10 +622,12 @@ int arch_validate_hwbkpt_settings(struct perf_event *bp)
 	 * Currently we rely on an overflow handler to take
 	 * care of single-stepping the breakpoint when it fires.
 	 * In the case of userspace breakpoints on a core with V7 debug,
-	 * we can use the mismatch feature as a poor-man's hardware single-step.
+	 * we can use the mismatch feature as a poor-man's hardware
+	 * single-step, but this only works for per-task breakpoints.
 	 */
 	if (WARN_ONCE(!bp->overflow_handler &&
-		(arch_check_bp_in_kernelspace(bp) || !core_has_mismatch_brps()),
+		(arch_check_bp_in_kernelspace(bp) || !core_has_mismatch_brps()
+		 || !bp->hw.bp_target),
 			"overflow handler required but none found")) {
 		ret = -EINVAL;
 	}