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Diffstat (limited to 'kernel/taskstats.c')
-rw-r--r--kernel/taskstats.c23
1 files changed, 17 insertions, 6 deletions
diff --git a/kernel/taskstats.c b/kernel/taskstats.c
index 123793cd06f9..5eab1f3edfa5 100644
--- a/kernel/taskstats.c
+++ b/kernel/taskstats.c
@@ -27,6 +27,7 @@
#include <linux/cgroup.h>
#include <linux/fs.h>
#include <linux/file.h>
+#include <linux/pid_namespace.h>
#include <net/genetlink.h>
#include <linux/atomic.h>
@@ -174,7 +175,9 @@ static void send_cpu_listeners(struct sk_buff *skb,
up_write(&listeners->sem);
}
-static void fill_stats(struct task_struct *tsk, struct taskstats *stats)
+static void fill_stats(struct user_namespace *user_ns,
+ struct pid_namespace *pid_ns,
+ struct task_struct *tsk, struct taskstats *stats)
{
memset(stats, 0, sizeof(*stats));
/*
@@ -190,7 +193,7 @@ static void fill_stats(struct task_struct *tsk, struct taskstats *stats)
stats->version = TASKSTATS_VERSION;
stats->nvcsw = tsk->nvcsw;
stats->nivcsw = tsk->nivcsw;
- bacct_add_tsk(stats, tsk);
+ bacct_add_tsk(user_ns, pid_ns, stats, tsk);
/* fill in extended acct fields */
xacct_add_tsk(stats, tsk);
@@ -207,7 +210,7 @@ static int fill_stats_for_pid(pid_t pid, struct taskstats *stats)
rcu_read_unlock();
if (!tsk)
return -ESRCH;
- fill_stats(tsk, stats);
+ fill_stats(current_user_ns(), task_active_pid_ns(current), tsk, stats);
put_task_struct(tsk);
return 0;
}
@@ -291,6 +294,12 @@ static int add_del_listener(pid_t pid, const struct cpumask *mask, int isadd)
if (!cpumask_subset(mask, cpu_possible_mask))
return -EINVAL;
+ if (current_user_ns() != &init_user_ns)
+ return -EINVAL;
+
+ if (task_active_pid_ns(current) != &init_pid_ns)
+ return -EINVAL;
+
if (isadd == REGISTER) {
for_each_cpu(cpu, mask) {
s = kmalloc_node(sizeof(struct listener),
@@ -631,11 +640,12 @@ void taskstats_exit(struct task_struct *tsk, int group_dead)
if (rc < 0)
return;
- stats = mk_reply(rep_skb, TASKSTATS_TYPE_PID, tsk->pid);
+ stats = mk_reply(rep_skb, TASKSTATS_TYPE_PID,
+ task_pid_nr_ns(tsk, &init_pid_ns));
if (!stats)
goto err;
- fill_stats(tsk, stats);
+ fill_stats(&init_user_ns, &init_pid_ns, tsk, stats);
/*
* Doesn't matter if tsk is the leader or the last group member leaving
@@ -643,7 +653,8 @@ void taskstats_exit(struct task_struct *tsk, int group_dead)
if (!is_thread_group || !group_dead)
goto send;
- stats = mk_reply(rep_skb, TASKSTATS_TYPE_TGID, tsk->tgid);
+ stats = mk_reply(rep_skb, TASKSTATS_TYPE_TGID,
+ task_tgid_nr_ns(tsk, &init_pid_ns));
if (!stats)
goto err;