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-rw-r--r--fs/proc/base.c34
1 files changed, 19 insertions, 15 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c
index ebccdc192830..dc7fe5f3a53c 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -2280,15 +2280,17 @@ static ssize_t timerslack_ns_write(struct file *file, const char __user *buf,
if (!p)
return -ESRCH;
- if (!capable(CAP_SYS_NICE)) {
- count = -EPERM;
- goto out;
- }
+ if (p != current) {
+ if (!capable(CAP_SYS_NICE)) {
+ count = -EPERM;
+ goto out;
+ }
- err = security_task_setscheduler(p);
- if (err) {
- count = err;
- goto out;
+ err = security_task_setscheduler(p);
+ if (err) {
+ count = err;
+ goto out;
+ }
}
task_lock(p);
@@ -2314,14 +2316,16 @@ static int timerslack_ns_show(struct seq_file *m, void *v)
if (!p)
return -ESRCH;
- if (!capable(CAP_SYS_NICE)) {
- err = -EPERM;
- goto out;
- }
+ if (p != current) {
- err = security_task_getscheduler(p);
- if (err)
- goto out;
+ if (!capable(CAP_SYS_NICE)) {
+ err = -EPERM;
+ goto out;
+ }
+ err = security_task_getscheduler(p);
+ if (err)
+ goto out;
+ }
task_lock(p);
seq_printf(m, "%llu\n", p->timer_slack_ns);