Messages in this thread | | | From | "Siddha, Suresh B" <> | Subject | RE: [PATCH] x86/ioapic: Fix NULL pointer dereference on CPU hotplug after disabling irqs | Date | Wed, 25 Jul 2012 23:28:38 +0000 |
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Tomoki wrote: > In current Linux, percpu variable `vector_irq' is not always cleared when > a CPU is offlined. If the cpu that has the disabled irqs in vector_irq is > hotplugged again, __setup_vector_irq() hits invalid irq vector and may > crash. > > Commit f6175f5bfb4c partially fixes this, but was not enough in > environments with IOMMU IRQ remapper.
So, this patch essentially makes the commit f6175f5bfb4c unnecessary, right?
Can you revert that too as part of this new proposed patch?
thanks, suresh
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