sched: fix sysctl directory permissions

There are two remaining gotchas:

- The directories have impossible permissions (writeable).

- The ctl_name for the kernel directory is inconsistent with
  everything else.  It should be CTL_KERN.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 5 insertions, 4 deletions

diff --git a/kernel/sched.c b/kernel/sched.c
index 48e7586168ef..5fecbbba12ac 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -5257,15 +5257,16 @@ static void migrate_dead_tasks(unsigned int dead_cpu)
 static struct ctl_table sd_ctl_dir[] = {
         {
                 .procname       = "sched_domain",
-                .mode           = 0755,
+                .mode           = 0555,
         },
         {0,},
 };
 
 static struct ctl_table sd_ctl_root[] = {
         {
+                .ctl_name       = CTL_KERN,
                 .procname       = "kernel",
-                .mode           = 0755,
+                .mode           = 0555,
                 .child          = sd_ctl_dir,
         },
         {0,},
@@ -5341,7 +5342,7 @@ static ctl_table *sd_alloc_ctl_cpu_table(int cpu)
         for_each_domain(cpu, sd) {
                 snprintf(buf, 32, "domain%d", i);
                 entry->procname = kstrdup(buf, GFP_KERNEL);
-                entry->mode = 0755;
+                entry->mode = 0555;
                 entry->child = sd_alloc_ctl_domain_table(sd);
                 entry++;
                 i++;
@@ -5361,7 +5362,7 @@ static void init_sched_domain_sysctl(void)
         for (i = 0; i < cpu_num; i++, entry++) {
                 snprintf(buf, 32, "cpu%d", i);
                 entry->procname = kstrdup(buf, GFP_KERNEL);
-                entry->mode = 0755;
+                entry->mode = 0555;
                 entry->child = sd_alloc_ctl_cpu_table(i);
         }
         sd_sysctl_header = register_sysctl_table(sd_ctl_root);