From ebd0d37aee849143562d7132ff932110081806b9 Mon Sep 17 00:00:00 2001
From: Paul Mundt <lethal@linux-sh.org>
Date: Mon, 8 Sep 2008 18:15:55 +0900
Subject: [PATCH] --- yaml --- r: 116108 b: refs/heads/master c:
 734db3770de03fbe9ae4e78519a7d1678189788c h: refs/heads/master v: v3

---
 [refs]                         |  2 +-
 trunk/arch/sh/kernel/kprobes.c | 11 +++++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 9ab519908079..826266ff4aff 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 247bc6d2ae3e2de08529977952c7d085f9d562d4
+refs/heads/master: 734db3770de03fbe9ae4e78519a7d1678189788c
diff --git a/trunk/arch/sh/kernel/kprobes.c b/trunk/arch/sh/kernel/kprobes.c
index f0e1c78d0bff..a478ba78e752 100644
--- a/trunk/arch/sh/kernel/kprobes.c
+++ b/trunk/arch/sh/kernel/kprobes.c
@@ -252,6 +252,17 @@ static int __kprobes kprobe_handler(struct pt_regs *regs)
 	p = get_kprobe(addr);
 	if (!p) {
 		/* Not one of ours: let kernel handle it */
+		if (*(kprobe_opcode_t *)addr != BREAKPOINT_INSTRUCTION) {
+			/*
+			 * The breakpoint instruction was removed right
+			 * after we hit it. Another cpu has removed
+			 * either a probepoint or a debugger breakpoint
+			 * at this address. In either case, no further
+			 * handling of this interrupt is appropriate.
+			 */
+			ret = 1;
+		}
+
 		goto no_kprobe;
 	}