x86: Fix NULL pointer access in irq_force_complete_move() for Xen guests

[deliverable/linux.git] / arch / x86 / kernel / apic / io_apic.c

diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 127b8718abfb0abd389334865f0bf3159b8e0fa3..eb2789c3f7216a43eb4017e44fed32556a703918 100644 (file)
--- 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