[PATCH -tip v2 1/7] kprobes: Make blacklist root user read only

[Masami Hiramatsu <mhiramat@xxxxxxxxxx>]

Since the blacklist file indicates a sensitive address
information to reader, it should be restricted to the
root user.

Suggested-by: Thomas Richter <tmricht@xxxxxxxxxxxxx>
Signed-off-by: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
---
 kernel/kprobes.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 102160ff5c66..314cec85a8b2 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -2621,7 +2621,7 @@ static int __init debugfs_kprobe_init(void)
 	if (!file)
 		goto error;
 
-	file = debugfs_create_file("blacklist", 0444, dir, NULL,
+	file = debugfs_create_file("blacklist", 0400, dir, NULL,
 				&debugfs_kprobe_blacklist_ops);
 	if (!file)
 		goto error;