Messages in this thread | | | Date | Sat, 02 Jan 2010 01:20:20 +0530 | From | David John <> | Subject | [Regression] 2.6.33-rc2 - pci: Commit e0cd516 causes OOPS |
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Hi All,
Commit e0cd516 causes an null pointer dereference when reading from the sysfs attributes local_cpu* on Intel machines with no ACPI NUMA proximity info, since dev->numa_node gets set to -1 for all PCI devices, which then gets passed to cpumask_of_node.
The patch following this mail fixes the problem for x86. Perhaps a more thorough solution would be to fix the PCI layer to set the node information for devices to zero rather than -1 (Since if CONFIG_NUMA=y we have node 0)? I don't know whether it is safe / correct to do this.
Regards, David.
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