[JFFS2] Solve BUG caused by frag->node representing a hole in fragtree

Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/fs/jffs2/nodelist.c b/fs/jffs2/nodelist.c
index fd21f109fbd22fedb8adf9725ebf102717478dd8..9abb5f4cfd75babc8019e3918bd36d9eb0902fa7 100644 (file)
--- a/fs/jffs2/nodelist.c
+++ b/fs/jffs2/nodelist.c
@@ -7,7 +7,7 @@
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: nodelist.c,v 1.111 2005/08/17 14:57:39 dedekind Exp $
+ * $Id: nodelist.c,v 1.112 2005/08/22 09:07:09 dedekind Exp $
  *
  */
 
@@ -80,7 +80,7 @@ void jffs2_truncate_fragtree(struct jffs2_sb_info *c, struct rb_root *list, uint
         * REF_PRISTINE irrespective of its size.
         */
        frag = frag_last(list);
-       if ((frag->ofs & (PAGE_CACHE_SIZE - 1)) == 0) {
+       if (frag->node && (frag->ofs & (PAGE_CACHE_SIZE - 1)) == 0) {
                JFFS2_DBG_FRAGTREE2("marking the last fragment 0x%08x-0x%08x REF_PRISTINE.\n",
                        frag->ofs, frag->ofs + frag->size); 
                frag->node->raw->flash_offset = ref_offset(frag->node->raw) | REF_PRISTINE;