From 5c2e4bbbd60623f1024a753c291b666068f8a6e7 Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Wed, 1 Jun 2011 12:25:54 -0500 Subject: [PATCH] slub: Disable interrupts in free_debug processing 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 Signed-off-by: Pekka Enberg --- mm/slub.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/mm/slub.c b/mm/slub.c index ee70c091e577..08c57a047548 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -1040,6 +1040,10 @@ static noinline int alloc_debug_processing(struct kmem_cache *s, struct page *pa 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)) @@ -1056,7 +1060,7 @@ static noinline int free_debug_processing(struct kmem_cache *s, } if (!check_object(s, page, object, SLUB_RED_ACTIVE)) - return 0; + goto out; if (unlikely(s != page->slab)) { if (!PageSlab(page)) { @@ -1077,13 +1081,15 @@ static noinline int free_debug_processing(struct kmem_cache *s, 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)