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Jan Beulich authored
Besides the reporter's issue of hitting a NULL deref when !CONFIG_GDBSX, XEN_DOMCTL_test_assign_device can legitimately end up having NULL passed here, when the domctl was passed DOMID_INVALID. Fixes: 71e617a6 ("use is_iommu_enabled() where appropriate...") Reported-by: Cheyenne Wills <cheyenne.wills@gmail.com> Signed-off-by: Jan Beulich <jbeulich@suse.com> Reviewed-by: Paul Durrant <paul@xen.org> Reviewed-by: Juergen Gross <jgross@suse.com>
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