Patch "perf probe: Add warning message if there is unexpected event name" has been added to the 4.4-stable tree

This is a note to let you know that I've just added the patch titled

perf probe: Add warning message if there is unexpected event name

to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
perf-probe-add-warning-message-if-there-is-unexpected-event-name.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Masami Hiramatsu <[email protected]>
Date: Sat, 9 Dec 2017 01:26:46 +0900
Subject: perf probe: Add warning message if there is unexpected event name

From: Masami Hiramatsu <[email protected]>

[ Upstream commit 9f5c6d8777a2d962b0eeacb2a16f37da6bea545b ]

This improve the error message so that user can know event-name error before writing new events to kprobe-events interface.

E.g.
======
#./perf probe -x /lib64/libc-2.25.so malloc_get_state*

   Internal error: "malloc_get_state@GLIBC_2" is an invalid event name.
     Error: Failed to add events.
   ======

---
 tools/perf/util/probe-event.c |    8 ++++++++
 1 file changed, 8 insertions(+)

@@ -2349,6 +2349,14 @@ static int get_new_event_name(char *buf,
 
 out:
 	free(nbase);
+
+	/* Final validation */
+	if (ret >= 0 && !is_c_func_name(buf)) {
+		pr_warning("Internal error: \"%s\" is an invalid event name.\n",
+			   buf);
+		ret = -EINVAL;
+	}
+
 	return ret;
 }
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/perf-probe-add-warning-message-if-there-is-unexpected-event-name.patch