The patch titled
list_del debug check
has been added to the -mm tree. Its filename is
list_del-debug.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: list_del debug check
From: Manfred Spraul <manfred@xxxxxxxxxxxxxxxx>
A list_del() debugging check. Has been in -mm for years. Dave moved
list_del() out-of-line in the debug case, so this is now suitable for
mainline.
Cc: Dave Jones <davej@xxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
lib/list_debug.c | 12 +++++++-----
1 files changed, 7 insertions(+), 5 deletions(-)
diff -puN lib/list_debug.c~list_del-debug lib/list_debug.c
--- a/lib/list_debug.c~list_del-debug
+++ a/lib/list_debug.c
@@ -59,14 +59,17 @@ EXPORT_SYMBOL(list_add);
*/
void list_del(struct list_head *entry)
{
+ BUG_ON(entry->prev->next != entry);
+ BUG_ON(entry->next->prev != entry);
+
if (unlikely(entry->prev->next != entry)) {
- printk(KERN_ERR "list_del corruption. prev->next should be %p, but was %p\n",
- entry, entry->prev->next);
+ printk(KERN_ERR "list_del corruption. prev->next should be %p, "
+ "but was %p\n", entry, entry->prev->next);
BUG();
}
if (unlikely(entry->next->prev != entry)) {
- printk(KERN_ERR "list_del corruption. next->prev should be %p, but was %p\n",
- entry, entry->next->prev);
+ printk(KERN_ERR "list_del corruption. next->prev should be %p, "
+ "but was %p\n", entry, entry->next->prev);
BUG();
}
__list_del(entry->prev, entry->next);
@@ -74,4 +77,3 @@ void list_del(struct list_head *entry)
entry->prev = LIST_POISON2;
}
EXPORT_SYMBOL(list_del);
-
_
Patches currently in -mm which might be from manfred@xxxxxxxxxxxxxxxx are
fix-possible-null-ptr-deref-in-forcedeth.patch
slab-respect-architecture-and-caller-mandated-alignment.patch
add-some-comments-to-slabc.patch
slab-extract-__kmem_cache_destroy-from-kmem_cache_destroy.patch
slab-do-not-panic-when-alloc_kmemlist-fails-and-slab-is-up.patch
list_del-debug.patch
mm-debug-dump-pageframes-on-bad_page.patch
slab-leaks3-default-y.patch
-
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
