kmemleak: change /sys/kernel/debug/kmemleak permissions from 0444 to 0644

Kmemleak can be tweaked at runtime by writing commands into debugfs
file.  Root can use it anyway, but without the write-bit this interface
isn't obvious.

Link: http://lkml.kernel.org/r/150728996582.744328.11541332857988399411.stgit@buzz
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index 7780cd83a4956f1a3cd9653cbd0737ad3f8c4f4e..fca3452e56c1eafe865e1c39db424240011c9afb 100644 (file)
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -2104,7 +2104,7 @@ static int __init kmemleak_late_init(void)
                return -ENOMEM;
        }
 
-       dentry = debugfs_create_file("kmemleak", S_IRUGO, NULL, NULL,
+       dentry = debugfs_create_file("kmemleak", 0644, NULL, NULL,
                                     &kmemleak_fops);
        if (!dentry)
                pr_warn("Failed to create the debugfs kmemleak file\n");