net: niu: fix format string overflow warning:

[karo-tx-linux.git] / mm / vmalloc.c

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 6211a807cb31ebfa0741d34b8663f4c47a403292..6016ab079e2bd0923affc208b09ee44ccb4e7f5a 100644 (file)
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -325,6 +325,7 @@ EXPORT_SYMBOL(vmalloc_to_pfn);
 
 /*** Global kva allocator ***/
 
+#define VM_LAZY_FREE   0x02
 #define VM_VM_AREA     0x04
 
 static DEFINE_SPINLOCK(vmap_area_lock);
@@ -1497,6 +1498,7 @@ struct vm_struct *remove_vm_area(const void *addr)
                spin_lock(&vmap_area_lock);
                va->vm = NULL;
                va->flags &= ~VM_VM_AREA;
+               va->flags |= VM_LAZY_FREE;
                spin_unlock(&vmap_area_lock);
 
                vmap_debug_free_range(va->va_start, va->va_end);
@@ -2704,8 +2706,14 @@ static int s_show(struct seq_file *m, void *p)
         * s_show can encounter race with remove_vm_area, !VM_VM_AREA on
         * behalf of vmap area is being tear down or vm_map_ram allocation.
         */
-       if (!(va->flags & VM_VM_AREA))
+       if (!(va->flags & VM_VM_AREA)) {
+               seq_printf(m, "0x%pK-0x%pK %7ld %s\n",
+                       (void *)va->va_start, (void *)va->va_end,
+                       va->va_end - va->va_start,
+                       va->flags & VM_LAZY_FREE ? "unpurged vm_area" : "vm_map_ram");
+
                return 0;
+       }
 
        v = va->vm;