1 files changed, 19 insertions, 0 deletions

diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 366b1017a4f1..2a1bef9203c6 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -243,6 +243,25 @@ static void show_map_vma(struct seq_file *m, struct vm_area_struct *vma)
                                 } else if (vma->vm_start <= mm->start_stack &&
                                            vma->vm_end >= mm->start_stack) {
                                         name = "[stack]";
+                                } else {
+                                        unsigned long stack_start;
+                                        struct proc_maps_private *pmp;
+
+                                        pmp = m->private;
+                                        stack_start = pmp->task->stack_start;
+
+                                        if (vma->vm_start <= stack_start &&
+                                            vma->vm_end >= stack_start) {
+                                                pad_len_spaces(m, len);
+                                                seq_printf(m,
+                                                 "[threadstack:%08lx]",
+#ifdef CONFIG_STACK_GROWSUP
+                                                 vma->vm_end - stack_start
+#else
+                                                 stack_start - vma->vm_start
+#endif
+                                                );
+                                        }
                                 }
                         } else {
                                 name = "[vdso]";