From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx176.postini.com [74.125.245.176]) by kanga.kvack.org (Postfix) with SMTP id 56BB66B0083 for ; Thu, 1 Nov 2012 17:03:22 -0400 (EDT) Date: Thu, 1 Nov 2012 21:03:20 +0000 From: Christoph Lameter Subject: Re: CK4 [00/15] Sl[auo]b: Common kmalloc caches V4 In-Reply-To: Message-ID: <0000013abdc90c92-f1c89a3b-326e-4b93-b77f-88bed6184015-000000@email.amazonses.com> References: <0000013a934eed6d-a9c1b247-dbbc-485d-b7cf-89aa36dcca57-000000@email.amazonses.com> <0000013abda5ae3c-f1f548fb-4878-4ae2-8f5a-bfad5922cf04-000000@email.amazonses.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: Ezequiel Garcia Cc: Pekka Enberg , Joonsoo Kim , Glauber Costa , linux-mm@kvack.org, David Rientjes On Thu, 1 Nov 2012, Ezequiel Garcia wrote: > On Thu, Nov 1, 2012 at 5:24 PM, Christoph Lameter wrote: > > On Thu, 1 Nov 2012, Ezequiel Garcia wrote: > > > >> While testing this patchset, I found a BUG. > >> > >> All I did was "sudo mount -a" to mount my development partitions. > >> > >> [ 25.366266] BUG: unable to handle kernel paging request at ffffffc0 > >> [ 25.366419] IP: [] slab_unmergeable+0x12/0x30 > > > > Arg. More sysfs trouble I guess. Sysfs is the cause for a lot of slub > > fragility. Sigh. > > > > Can you rerun this with "slub_debug" as a kernel option? > > I will. > > Also I will test *without* a few patches I was playing around with... > I should have done that before reporting :/ > Until then, please consider this noise, just in case. Well found it. The create common boot functions patch (#2) did a list add of a structure that was moved later during slub bootstrap. Fix will come wiht V5. -- 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