diff --git a/arch/powerpc/kernel/hw_breakpoint.c b/arch/powerpc/kernel/hw_breakpoint.c
index 241e097123143d44433f3b66724046c938b413b1..5a1d55d06a082895a8f8b8a3cb57e0e814649ff9 100644
--- a/arch/powerpc/kernel/hw_breakpoint.c
+++ b/arch/powerpc/kernel/hw_breakpoint.c
@@ -304,15 +304,16 @@ int __kprobes single_step_dabr_instruction(struct die_args *args)
 	if (!bp_info->extraneous_interrupt)
 		perf_bp_event(bp, regs);
 
+	set_dabr(bp_info->address | bp_info->type | DABR_TRANSLATION);
+	current->thread.last_hit_ubp = NULL;
+
 	/*
-	 * Do not disable MSR_SE if the process was already in
-	 * single-stepping mode.
+	 * If the process was being single-stepped by ptrace, let the
+	 * other single-step actions occur (e.g. generate SIGTRAP).
 	 */
-	if (!test_thread_flag(TIF_SINGLESTEP))
-		regs->msr &= ~MSR_SE;
+	if (test_thread_flag(TIF_SINGLESTEP))
+		return NOTIFY_DONE;
 
-	set_dabr(bp_info->address | bp_info->type | DABR_TRANSLATION);
-	current->thread.last_hit_ubp = NULL;
 	return NOTIFY_STOP;
 }