From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750990AbdAPJQ7 (ORCPT ); Mon, 16 Jan 2017 04:16:59 -0500 Received: from mail.skyhub.de ([78.46.96.112]:39120 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750864AbdAPJQ5 (ORCPT ); Mon, 16 Jan 2017 04:16:57 -0500 From: Borislav Petkov To: Michal Hocko , Vlastimil Babka Cc: Linux MM , LKML Subject: [PATCH] mm/slub: Add a dump_stack() to the unexpected GFP check Date: Mon, 16 Jan 2017 10:16:43 +0100 Message-Id: <20170116091643.15260-1-bp@alien8.de> X-Mailer: git-send-email 2.11.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Borislav Petkov We wanna know who's doing such a thing. Like slab.c does that. Signed-off-by: Borislav Petkov --- mm/slub.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/slub.c b/mm/slub.c index 067598a00849..1b0fa7625d6d 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -1623,6 +1623,7 @@ static struct page *new_slab(struct kmem_cache *s, gfp_t flags, int node) flags &= ~GFP_SLAB_BUG_MASK; pr_warn("Unexpected gfp: %#x (%pGg). Fixing up to gfp: %#x (%pGg). Fix your code!\n", invalid_mask, &invalid_mask, flags, &flags); + dump_stack(); } return allocate_slab(s, -- 2.11.0