From mboxrd@z Thu Jan 1 00:00:00 1970 Received: by rv-out-0910.google.com with SMTP id l15so449686rvb.26 for ; Thu, 17 Jan 2008 04:14:11 -0800 (PST) Message-ID: <84144f020801170414q7d408a74uf47a84b777c36a4a@mail.gmail.com> Date: Thu, 17 Jan 2008 14:14:11 +0200 From: "Pekka Enberg" Subject: Re: crash in kmem_cache_init In-Reply-To: <20080115150949.GA14089@aepfle.de> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20080115150949.GA14089@aepfle.de> Sender: owner-linux-mm@kvack.org Return-Path: To: Olaf Hering Cc: linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org, clameter@sgi.com, Linux MM List-ID: Hi Olaf, [Adding Christoph as cc.] On Jan 15, 2008 5:09 PM, Olaf Hering wrote: > Current linus tree crashes in kmem_cache_init, as shown below. The > system is a 8cpu 2.2GHz POWER5 system, model 9117-570, with 4GB ram. > Firmware is 240_332, 2.6.23 boots ok with the same config. > > There is a series of mm related patches in 2.6.24-rc1: > commit 04231b3002ac53f8a64a7bd142fde3fa4b6808c6 seems to break it, So that's the "Memoryless nodes: Slab support" patch that I think cause a similar oops while ago. > Unable to handle kernel paging request for data at address 0x00000040 > Faulting instruction address: 0xc000000000437470 > cpu 0x0: Vector: 300 (Data Access) at [c00000000075b830] > pc: c000000000437470: ._spin_lock+0x20/0x88 > lr: c0000000000f78a8: .cache_grow+0x7c/0x338 > sp: c00000000075bab0 > msr: 8000000000009032 > dar: 40 > dsisr: 40000000 > current = 0xc000000000665a50 > paca = 0xc000000000666380 > pid = 0, comm = swapper > enter ? for help > [c00000000075bb30] c0000000000f78a8 .cache_grow+0x7c/0x338 > [c00000000075bbf0] c0000000000f7d04 .fallback_alloc+0x1a0/0x1f4 > [c00000000075bca0] c0000000000f8544 .kmem_cache_alloc+0xec/0x150 > [c00000000075bd40] c0000000000fb1c0 .kmem_cache_create+0x208/0x478 > [c00000000075be20] c0000000005e670c .kmem_cache_init+0x218/0x4f4 > [c00000000075bee0] c0000000005bf8ec .start_kernel+0x2f8/0x3fc > [c00000000075bf90] c000000000008590 .start_here_common+0x60/0xd0 Looks similar to the one discussed on linux-mm ("[BUG] at mm/slab.c:3320" thread). Christoph? -- 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