From: Paul Mackerras <paulus@samba.org>
To: Christoph Lameter <clameter@sgi.com>
Cc: Will Schmidt <will_schmidt@vnet.ibm.com>,
akpm@osdl.org, linuxppc-dev@ozlabs.org,
linux-kernel@vger.kernel.org
Subject: Re: kernel BUG in __cache_alloc_node at linux-2.6.git/mm/slab.c:3177!
Date: Wed, 18 Oct 2006 16:11:48 +1000 [thread overview]
Message-ID: <17717.50596.248553.816155@cargo.ozlabs.ibm.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0610161630430.8341@schroedinger.engr.sgi.com>
Christoph,
I also am hitting this BUG on a POWER5 partition. The relevant boot
messages are:
Zone PFN ranges:
DMA 0 -> 524288
Normal 524288 -> 524288
early_node_map[3] active PFN ranges
1: 0 -> 32768
0: 32768 -> 278528
1: 278528 -> 524288
[boot]0015 Setup Done
Built 2 zonelists. Total pages: 513760
Kernel command line: root=/dev/sdc3
[snip]
freeing bootmem node 0
freeing bootmem node 1
Memory: 2046852k/2097152k available (5512k kernel code, 65056k reserved, 2204k data, 554k bss, 256k init)
kernel BUG in __cache_alloc_node at /home/paulus/kernel/powerpc/mm/slab.c:3177!
Since this is a virtualized system there is every possibility that the
memory we get won't be divided into nodes in the nice neat manner you
seem to be expecting. It just depends on what memory the hypervisor
has free, and on what nodes, when the partition is booted.
In other words, the assumption that node pfn ranges won't overlap is
completely untenable for us.
Linus' tree is currently broken for us. Any suggestions for how to
fix it, since I am not very familiar with the NUMA code?
Paul.
next prev parent reply other threads:[~2006-10-18 6:11 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-13 18:41 Will Schmidt
2006-10-13 19:05 ` Christoph Lameter
2006-10-13 19:53 ` Will Schmidt
2006-10-13 20:57 ` Will Schmidt
2006-10-13 21:22 ` Nathan Lynch
2006-10-13 21:34 ` Anton Blanchard
2006-10-13 22:01 ` Mike Kravetz
2006-10-13 22:22 ` Christoph Lameter
2006-10-16 16:00 ` Will Schmidt
2006-10-16 19:20 ` Will Schmidt
2006-10-16 19:25 ` Christoph Lameter
2006-10-16 20:50 ` Will Schmidt
2006-10-16 23:37 ` Christoph Lameter
2006-10-18 6:11 ` Paul Mackerras [this message]
2006-10-18 15:12 ` Christoph Lameter
2006-10-18 21:19 ` Paul Mackerras
2006-10-18 21:26 ` Christoph Lameter
2006-10-18 21:49 ` Christoph Lameter
2006-10-19 5:03 ` Paul Mackerras
2006-10-19 16:16 ` Christoph Lameter
2006-10-19 16:30 ` Anton Blanchard
2006-10-19 16:49 ` Christoph Lameter
2006-10-19 22:23 ` Paul Mackerras
2006-10-19 22:31 ` Christoph Lameter
2006-10-20 7:18 ` Paul Mackerras
2006-10-20 14:18 ` Andy Whitcroft
2006-10-20 14:31 ` [PATCH] Reintroduce NODES_SPAN_OTHER_NODES for powerpc Andy Whitcroft
2006-10-20 16:30 ` Mel Gorman
2006-10-20 14:59 ` kernel BUG in __cache_alloc_node at linux-2.6.git/mm/slab.c:3177! Mike Kravetz
2006-10-20 15:19 ` Will Schmidt
2006-10-20 16:00 ` Andy Whitcroft
2006-10-20 17:09 ` Andrew Morton
2006-10-20 17:46 ` Christoph Lameter
2006-10-20 18:07 ` Andy Whitcroft
2006-10-20 17:13 ` Will Schmidt
2006-10-20 17:34 ` Christoph Lameter
2006-10-20 22:54 ` Paul Mackerras
2006-10-19 17:03 ` Christoph Lameter
2006-10-19 18:07 ` Christoph Lameter
2006-10-19 20:37 ` Will Schmidt
2006-10-19 21:28 ` Christoph Lameter
2006-10-19 21:43 ` Will Schmidt
2006-10-19 22:00 ` Christoph Lameter
2006-10-19 21:39 ` Christoph Lameter
2006-10-19 20:38 ` Will Schmidt
2006-10-19 21:30 ` Christoph Lameter
2006-10-18 16:06 ` Christoph Lameter
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