From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail144.messagelabs.com (mail144.messagelabs.com [216.82.254.51]) by kanga.kvack.org (Postfix) with ESMTP id A2F2D8D0040 for ; Thu, 24 Mar 2011 12:03:24 -0400 (EDT) Date: Thu, 24 Mar 2011 17:03:10 +0100 From: Ingo Molnar Subject: Re: [GIT PULL] SLAB changes for v2.6.39-rc1 Message-ID: <20110324160310.GA27127@elte.hu> References: <20110324142146.GA11682@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20110324142146.GA11682@elte.hu> Sender: owner-linux-mm@kvack.org List-ID: To: Pekka Enberg Cc: torvalds@linux-foundation.org, cl@linux-foundation.org, akpm@linux-foundation.org, tj@kernel.org, npiggin@kernel.dk, rientjes@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org * Ingo Molnar wrote: > FYI, some sort of boot crash has snuck upstream in the last 24 hours: > > BUG: unable to handle kernel paging request at ffff87ffc147e020 > IP: [] this_cpu_cmpxchg16b_emu+0x2/0x1c > > [] ? kmem_cache_alloc+0x4c/0x110 > [] kmem_cache_init+0xeb/0x2b0 > [] start_kernel+0x1de/0x49b > [] x86_64_start_reservations+0x132/0x136 > [] ? early_idt_handlers+0x140/0x140 > > And the SLAB changes are one of the suspects. It triggers in about 5% of all > randconfigs. I'm bisecting it currently. Caused by: | 8a5ec0ba42c4919e2d8f4c3138cc8b987fdb0b79 is the first bad commit | commit 8a5ec0ba42c4919e2d8f4c3138cc8b987fdb0b79 | Author: Christoph Lameter | Date: Fri Feb 25 11:38:54 2011 -0600 | | Lockless (and preemptless) fastpaths for slub I'll try to revert these: 2fd66c517d5e: slub: Add missing irq restore for the OOM path a24c5a0ea902: slub: Dont define useless label in the !CONFIG_CMPXCHG_LOCAL case 8a5ec0ba42c4: Lockless (and preemptless) fastpaths for slub Thanks, Ingo -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org