From: Andrey Ryabinin Date: Tue, 2 Aug 2016 21:02:46 +0000 (-0700) Subject: mm/kasan, slub: don't disable interrupts when object leaves quarantine X-Git-Tag: v4.8-rc1~52^2~97 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f7376aed6c032aab820fa36806a89e16e353a0d9;p=platform%2Fkernel%2Flinux-exynos.git mm/kasan, slub: don't disable interrupts when object leaves quarantine SLUB doesn't require disabled interrupts to call ___cache_free(). Link: http://lkml.kernel.org/r/1470062715-14077-3-git-send-email-aryabinin@virtuozzo.com Signed-off-by: Andrey Ryabinin Acked-by: Alexander Potapenko Cc: Dmitry Vyukov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/mm/kasan/quarantine.c b/mm/kasan/quarantine.c index 65793f1..4852625 100644 --- a/mm/kasan/quarantine.c +++ b/mm/kasan/quarantine.c @@ -147,10 +147,14 @@ static void qlink_free(struct qlist_node *qlink, struct kmem_cache *cache) struct kasan_alloc_meta *alloc_info = get_alloc_info(cache, object); unsigned long flags; - local_irq_save(flags); + if (IS_ENABLED(CONFIG_SLAB)) + local_irq_save(flags); + alloc_info->state = KASAN_STATE_FREE; ___cache_free(cache, object, _THIS_IP_); - local_irq_restore(flags); + + if (IS_ENABLED(CONFIG_SLAB)) + local_irq_restore(flags); } static void qlist_free_all(struct qlist_head *q, struct kmem_cache *cache)