[PATCH] list_debug: show address of prev and next when list_del corruption is detected.

[PATCH] list_debug: show address of prev and next when list_del corruption is detected.

[Masayoshi Mizuma]

When list_del corruption is detected, the corruption may happen
because of the region of prev or next is destroyed. So, the
address of prev/next is useful to find the destroyer.

Signed-off-by: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>
---
 lib/list_debug.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/lib/list_debug.c b/lib/list_debug.c
index 3859bf6..a9cbcdb 100644
--- a/lib/list_debug.c
+++ b/lib/list_debug.c
@@ -55,11 +55,11 @@ void __list_del_entry(struct list_head *entry)
 		"list_del corruption, %p->prev is LIST_POISON2 (%p)\n",
 		entry, LIST_POISON2) ||
 	    WARN(prev->next != entry,
-		"list_del corruption. prev->next should be %p, "
-		"but was %p\n", entry, prev->next) ||
+		"list_del corruption. prev->next should be %p, but was %p (prev=%p)\n",
+		entry, prev->next, prev) ||
 	    WARN(next->prev != entry,
-		"list_del corruption. next->prev should be %p, "
-		"but was %p\n", entry, next->prev))
+		"list_del corruption. next->prev should be %p, but was %p (next=%p)\n",
+		entry, next->prev, next))
 		return;
 
 	__list_del(prev, next);
-- 
1.8.3.1