Hi,

On Sat, Jul 19, 2014 at 08:59:08PM +0000, Neel Natu wrote:
> Author: neel
> Date: Sat Jul 19 20:59:08 2014
> New Revision: 268889
> URL: http://svnweb.freebsd.org/changeset/base/268889

<snip>

> Modified: head/sys/amd64/vmm/intel/vmx.c
> ==============================================================================
> --- head/sys/amd64/vmm/intel/vmx.c    Sat Jul 19 20:55:13 2014        
> (r268888)
> +++ head/sys/amd64/vmm/intel/vmx.c    Sat Jul 19 20:59:08 2014        
> (r268889)
> @@ -1213,22 +1213,31 @@ vmx_inject_interrupts(struct vmx *vmx, i
>  {
>       struct vm_exception exc;
>       int vector, need_nmi_exiting, extint_pending;
> -     uint64_t rflags;
> +     uint64_t rflags, entryinfo;
>       uint32_t gi, info;
>  
> -     if (vm_exception_pending(vmx->vm, vcpu, &exc)) {
> -             KASSERT(exc.vector >= 0 && exc.vector < 32,
> -                 ("%s: invalid exception vector %d", __func__, exc.vector));
> +     if (vm_entry_intinfo(vmx->vm, vcpu, &entryinfo)) {
> +             KASSERT((entryinfo & VMCS_INTR_VALID) != 0, ("%s: entry "
> +                 "intinfo is not valid: %#lx", __func__, entryinfo));
>  
>               info = vmcs_read(VMCS_ENTRY_INTR_INFO);
>               KASSERT((info & VMCS_INTR_VALID) == 0, ("%s: cannot inject "
>                    "pending exception %d: %#x", __func__, exc.vector, info));
>  

/usr/src/sys/modules/vmm/../../amd64/vmm/intel/vmx.c:1214:22: error: unused 
variable 'exc' [-Werror,-Wunused-variable]
        struct vm_exception exc;
                            ^
1 error generated.

Printing the uninitialised object in the KASSERT is most probably wrong.

BR,
Stefan
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