linux-kernel - [PATCH ftrace/core v4 3/4] kprobes: Add IPMODIFY flag to kprobe_ftrace

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Message-ID: <20140728052236.29491.17679.stgit@kbuild-fedora.novalocal>
Date:	Mon, 28 Jul 2014 05:22:36 +0000
From:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
To:	Steven Rostedt <rostedt@...dmis.org>,
	Josh Poimboeuf <jpoimboe@...hat.com>
Cc:	Ingo Molnar <mingo@...nel.org>, Namhyung Kim <namhyung@...nel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>
Subject: [PATCH ftrace/core v4 3/4] kprobes: Add IPMODIFY flag to
 kprobe_ftrace_ops

Add FTRACE_OPS_FL_IPMODIFY flag to kprobe_ftrace_ops
since kprobes can changes regs->ip.

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
---
 kernel/kprobes.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 3214289..e52d86f 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -915,7 +915,7 @@ static struct kprobe *alloc_aggr_kprobe(struct kprobe *p)
 #ifdef CONFIG_KPROBES_ON_FTRACE
 static struct ftrace_ops kprobe_ftrace_ops __read_mostly = {
 	.func = kprobe_ftrace_handler,
-	.flags = FTRACE_OPS_FL_SAVE_REGS,
+	.flags = FTRACE_OPS_FL_SAVE_REGS | FTRACE_OPS_FL_IPMODIFY,
 };
 static int kprobe_ftrace_enabled;
 


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