vfs: Apply lockdep-based checking to rcu_dereference() uses

[pandora-kernel.git] / fs / proc / base.c

diff --git a/fs/proc/base.c b/fs/proc/base.c
index 58324c2..623e2ff 100644 (file)
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1095,8 +1095,12 @@ static ssize_t proc_loginuid_write(struct file * file, const char __user * buf,
        if (!capable(CAP_AUDIT_CONTROL))
                return -EPERM;
 
-       if (current != pid_task(proc_pid(inode), PIDTYPE_PID))
+       rcu_read_lock();
+       if (current != pid_task(proc_pid(inode), PIDTYPE_PID)) {
+               rcu_read_unlock();
                return -EPERM;
+       }
+       rcu_read_unlock();
 
        if (count >= PAGE_SIZE)
                count = PAGE_SIZE - 1;