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Date:      Sun, 20 Jul 2014 16:23:54 +0200
From:      Stefan Farfeleder <stefanf@FreeBSD.org>
To:        Neel Natu <neel@FreeBSD.org>
Cc:        svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org
Subject:   Re: svn commit: r268889 - in head: lib/libvmmapi sys/amd64/include sys/amd64/vmm sys/amd64/vmm/intel usr.sbin/bhyve usr.sbin/bhyvectl
Message-ID:  <20140720142354.GA1205@mole.fafoe.narf.at>
In-Reply-To: <201407192059.s6JKx8un072543@svn.freebsd.org>
References:  <201407192059.s6JKx8un072543@svn.freebsd.org>

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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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