From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ie0-f175.google.com (mail-ie0-f175.google.com [209.85.223.175]) by kanga.kvack.org (Postfix) with ESMTP id B98456B0038 for ; Tue, 16 Jun 2015 17:07:33 -0400 (EDT) Received: by iebgx4 with SMTP id gx4so21431223ieb.0 for ; Tue, 16 Jun 2015 14:07:33 -0700 (PDT) Received: from mx0a-00082601.pphosted.com (mx0a-00082601.pphosted.com. [67.231.145.42]) by mx.google.com with ESMTPS id y1si2256904icv.44.2015.06.16.14.07.32 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Tue, 16 Jun 2015 14:07:33 -0700 (PDT) Date: Tue, 16 Jun 2015 14:07:21 -0700 From: Martin KaFai Lau Subject: Re: [RFC NEXT] mm: Fix suspicious RCU usage at kernel/sched/core.c:7318 Message-ID: <20150616210720.GC3958923@devbig242.prn2.facebook.com> References: <1434403518-5308-1-git-send-email-Larry.Finger@lwfinger.net> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <1434403518-5308-1-git-send-email-Larry.Finger@lwfinger.net> Sender: owner-linux-mm@kvack.org List-ID: To: Larry Finger Cc: Tejun Heo , Catalin Marinas , Christoph Lameter , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Kernel Team On Mon, Jun 15, 2015 at 04:25:18PM -0500, Larry Finger wrote: > Additional backtrace lines are truncated. In addition, the above splat is > followed by several "BUG: sleeping function called from invalid context > at mm/slub.c:1268" outputs. As suggested by Martin KaFai Lau, these are the > clue to the fix. Routine kmemleak_alloc_percpu() always uses GFP_KERNEL > for its allocations, whereas it should use the value input to pcpu_alloc(). Just a minor nit, 'kmemleak_alloc_percpu() should follow the gfp from per_alloc()' may be a more accurate title to describe the patch. Acked-by: Martin KaFai Lau -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org