restrict reading from /proc/<pid>/maps to those who share ->mm or can ptrace pid
[linux-2.6.git] / fs / proc / task_mmu.c
index c24d81a..8043a3e 100644 (file)
@@ -397,12 +397,11 @@ static void *m_start(struct seq_file *m, loff_t *pos)
        if (!priv->task)
                return NULL;
 
-       mm = get_task_mm(priv->task);
+       mm = mm_for_maps(priv->task);
        if (!mm)
                return NULL;
 
        priv->tail_vma = tail_vma = get_gate_vma(priv->task);
-       down_read(&mm->mmap_sem);
 
        /* Start with last addr hint */
        if (last_addr && (vma = find_vma(mm, last_addr))) {