Patch "ftrace: Fix uninitialized variable in match_records()" has been added to the 4.12-stable tree

Patch "ftrace: Fix uninitialized variable in match_records()" has been added to the 4.12-stable tree

[gregkh]

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

    ftrace: Fix uninitialized variable in match_records()

to the 4.12-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:
     ftrace-fix-uninitialized-variable-in-match_records.patch
and it can be found in the queue-4.12 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 2e028c4fe12907f226b8221815f16c2486ad3aa7 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Wed, 12 Jul 2017 10:35:57 +0300
Subject: ftrace: Fix uninitialized variable in match_records()

From: Dan Carpenter <dan.carpenter@oracle.com>

commit 2e028c4fe12907f226b8221815f16c2486ad3aa7 upstream.

My static checker complains that if "func" is NULL then "clear_filter"
is uninitialized.  This seems like it could be true, although it's
possible something subtle is happening that I haven't seen.

    kernel/trace/ftrace.c:3844 match_records()
    error: uninitialized symbol 'clear_filter'.

Link: http://lkml.kernel.org/r/20170712073556.h6tkpjcdzjaozozs@mwanda

Fixes: f0a3b154bd7 ("ftrace: Clarify code for mod command")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 kernel/trace/ftrace.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -3665,7 +3665,7 @@ match_records(struct ftrace_hash *hash,
 	int exclude_mod = 0;
 	int found = 0;
 	int ret;
-	int clear_filter;
+	int clear_filter = 0;
 
 	if (func) {
 		func_g.type = filter_parse_regex(func, len, &func_g.search,


Patches currently in stable-queue which might be from dan.carpenter@oracle.com are

queue-4.12/ftrace-fix-uninitialized-variable-in-match_records.patch
queue-4.12/serial-st-asc-potential-error-pointer-dereference.patch
queue-4.12/ipmi-ssif-add-missing-unlock-in-error-branch.patch
queue-4.12/serial-sh-sci-uninitialized-variables-in-sysfs-files.patch
queue-4.12/ovl-fix-random-return-value-on-mount.patch