Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755764AbaJNVTl (ORCPT ); Tue, 14 Oct 2014 17:19:41 -0400 Received: from smtp2.it.da.ut.ee ([193.40.5.67]:45936 "EHLO smtp2.it.da.ut.ee" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751162AbaJNVTk (ORCPT ); Tue, 14 Oct 2014 17:19:40 -0400 Date: Wed, 15 Oct 2014 00:19:36 +0300 (EEST) From: mroos@linux.ee To: David Miller cc: iamjoonsoo.kim@lge.com, linux-kernel@vger.kernel.org, cl@linux.com, penberg@kernel.org, rientjes@google.com, akpm@linux-foundation.org, linux-mm@kvack.org, sparclinux@vger.kernel.org Subject: Re: unaligned accesses in SLAB etc. In-Reply-To: <20141013.200416.641735303627599182.davem@davemloft.net> Message-ID: References: <20141012.132012.254712930139255731.davem@davemloft.net> <20141013235219.GA11191@js1304-P5Q-DELUXE> <20141013.200416.641735303627599182.davem@davemloft.net> User-Agent: Alpine 2.11 (LRH 23 2013-08-11) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > > I'd like to know that your another problem is related to commit > > bf0dea23a9c0 ("mm/slab: use percpu allocator for cpu cache"). So, > > if the commit is reverted, your another problem is also gone > > completely? > > The other problem has been present forever. Umm? I am afraid I have been describing it badly. This random SIGBUS+SIGSEGV problem is new - I have not seen it before. I have been able to do kernel compiles for years on sparc64 (modulo specific bugs in specific configurations) and 3.17 + start/end swap patch seems also stable for most machine. With yesterdays git + align patch, it dies with SIGBUS multiple times during compilation so it's a new regression for me. Will try reverting that commit tomorrow. My only other current sparc64 problems that I am seeing - V210/V440 die during bootup if compiled with gcc 4.9 and V480 dies with FATAL exceptions during bootups since previous kernel release. Maybe also exit_mmap warning - I do not know if they have been fixed, I see them rarely. -- Meelis Roos (mroos@linux.ee) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/