We will be calling free_debug_processing with interrupts disabled
in some case when the later patches are applied. Some of the
functions called by free_debug_processing expect interrupts to be
off.
Signed-off-by: Christoph Lameter <cl@xxxxxxxxx>
---
mm/slub.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
Index: linux-2.6/mm/slub.c
===================================================================
--- linux-2.6.orig/mm/slub.c 2011-05-12 16:19:44.000000000 -0500
+++ linux-2.6/mm/slub.c 2011-05-12 16:19:56.000000000 -0500
@@ -1035,6 +1035,10 @@ bad:
static noinline int free_debug_processing(struct kmem_cache *s,
struct page *page, void *object, unsigned long addr)
{
+ unsigned long flags;
+ int rc = 0;
+
+ local_irq_save(flags);
slab_lock(page);
if (!check_slab(s, page))
@@ -1051,7 +1055,7 @@ static noinline int free_debug_processin
}
if (!check_object(s, page, object, SLUB_RED_ACTIVE))
- return 0;
+ goto out;
if (unlikely(s != page->slab)) {
if (!PageSlab(page)) {
@@ -1072,13 +1076,15 @@ static noinline int free_debug_processin
set_track(s, object, TRACK_FREE, addr);
trace(s, page, object, 0);
init_object(s, object, SLUB_RED_INACTIVE);
+ rc = 1;
+out:
slab_unlock(page);
- return 1;
+ local_irq_restore(flags);
+ return rc;
fail:
slab_fix(s, "Object at 0x%p not freed", object);
- slab_unlock(page);
- return 0;
+ goto out;
}
static int __init setup_slub_debug(char *str)
--
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