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get_pid_cred(): proper locking around pid_task

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Balazs Gerofi
2016-12-25 17:17:03 +09:00
parent 3565959af7
commit e7af537452
1 changed files with 4 additions and 2 deletions
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2
executer/kernel/mcctrl/procfs.c
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@@ -249,7 +249,9 @@ get_pid_cred(int pid)
struct task_struct *task = NULL; struct task_struct *task = NULL;
if (pid > 0) { if (pid > 0) {
rcu_read_lock();
task = pid_task(find_vpid(pid), PIDTYPE_PID); task = pid_task(find_vpid(pid), PIDTYPE_PID);
rcu_read_unlock();
if (task) { if (task) {
return __task_cred(task); return __task_cred(task);
} }