From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751613AbeDDHSl (ORCPT ); Wed, 4 Apr 2018 03:18:41 -0400 Received: from mail.monom.org ([188.138.9.77]:49550 "EHLO mail.monom.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750762AbeDDHRP (ORCPT ); Wed, 4 Apr 2018 03:17:15 -0400 From: Daniel Wagner To: linux-kernel@vger.kernel.org Cc: linux-rt-users , Steven Rostedt , Thomas Gleixner , Carsten Emde , John Kacur , Paul Gortmaker , Julia Cartwright , Daniel Wagner , tom.zanussi@linux.intel.com, Sebastian Andrzej Siewior , stable-rt@vger.kernel.org Subject: [PATCH RT 3/7] mm/slub: close possible memory-leak in kmem_cache_alloc_bulk() Date: Wed, 4 Apr 2018 09:16:48 +0200 Message-Id: <20180404071652.24196-4-wagi@monom.org> X-Mailer: git-send-email 2.14.3 In-Reply-To: <20180404071652.24196-1-wagi@monom.org> References: <20180404071652.24196-1-wagi@monom.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Sebastian Andrzej Siewior Under certain circumstances we could leak elements which were moved to the local "to_free" list. The damage is limited since I can't find any users here. Cc: stable-rt@vger.kernel.org Signed-off-by: Sebastian Andrzej Siewior --- mm/slub.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/slub.c b/mm/slub.c index b183c5271607..b3626ab324fe 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -3026,6 +3026,7 @@ int kmem_cache_alloc_bulk(struct kmem_cache *s, gfp_t flags, size_t size, return i; error: local_irq_enable(); + free_delayed(&to_free); slab_post_alloc_hook(s, flags, i, p); __kmem_cache_free_bulk(s, i, p); return 0; -- 2.14.3