linux-kernel - Re: [git pull] first round of PCI updates for 2.6.32

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Message-ID: <4AB275A1.8020005@kernel.org>
Date:	Thu, 17 Sep 2009 10:45:05 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Tejun Heo <tj@...nel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [git pull] first round of PCI updates for 2.6.32

Ingo Molnar wrote:
> * Jesse Barnes <jbarnes@...tuousgeek.org> wrote:
> 
>> The following changes since commit 332a3392188e0ad966543c87b8da2b9d246f301d:
>>   Linus Torvalds (1):
>>         Merge git://git.kernel.org/.../herbert/crypto-2.6
> 
> Since this went upstream -tip tests have been triggering nasty bootup 
> crashes in the PCI code:
> 
> [    4.366174] initcall pci_proc_init+0x0/0x7a returned 0 after 976 usecs
> [    4.373009] calling  pcie_portdrv_init+0x0/0x60 @ 1
> [    4.378368] bus: 'pci_express': registered
> [    4.382009] bus: 'pci': add driver pcieport-driver
> [    4.387058] bus: 'pci': driver_probe_device: matched device 0000:00:0b.0 with driver pcieport-driver
> [    4.396005] bus: 'pci': really_probe: probing driver pcieport-driver with device 0000:00:0b.0
> [    4.404056] cpumask_of_node(255): node > nr_node_ids(16)

please check

[PATCH] x86/pci: retore 32bit to node0 as default node

to fix crash on 32bit system

diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c
index 5db96d4..e562ade 100644
--- a/arch/x86/pci/common.c
+++ b/arch/x86/pci/common.c
@@ -646,9 +646,7 @@ int get_mp_bus_to_node(int busnum)
 
 #else /* CONFIG_X86_32 */
 
-static unsigned char mp_bus_to_node[BUS_NR] = {
-	[0 ... BUS_NR - 1] = -1
-};
+static unsigned char mp_bus_to_node[BUS_NR];
 
 void set_mp_bus_to_node(int busnum, int node)
 {
--
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