Messages in this thread Patch in this message | | | Date | Tue, 27 Apr 2010 11:24:42 -0400 | From | Prarit Bhargava <> | Subject | [PATCH] Fix NULL pointer for Xen guests |
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Upstream PV guests fail to boot because of a NULL pointer. It is possible that xen guests have irq_desc->chip_data = NULL.
Test for NULL chip_data pointer before attempting to complete an irq move.
Signed-off-by: Prarit Bhargava <prarit@redhat.com> Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 127b871..eb2789c 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -2545,6 +2545,9 @@ void irq_force_complete_move(int irq) struct irq_desc *desc = irq_to_desc(irq); struct irq_cfg *cfg = desc->chip_data; + if (!cfg) + return; + __irq_complete_move(&desc, cfg->vector); } #else
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