From: Rabin Vincent <[email protected]>

If we hit a NULL next pointer on a struct list_head list it means the
list is corrupted.
---
 tools.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tools.c b/tools.c
index 8190d7e..577820d 100644
--- a/tools.c
+++ b/tools.c
@@ -3808,6 +3808,12 @@ do_list(struct list_data *ld)
                }
 
                if (next == 0) {
+                       if (ld->flags & LIST_HEAD_FORMAT) {
+                               error(INFO, "\ninvalid list entry: 0\n");
+                               if (close_hq_on_return)
+                                       hq_close();
+                               return -1;
+                       }
                        if (CRASHDEBUG(1))
                                console("do_list end: next:%lx\n", next);
                        break;
-- 
2.7.0

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