Re: [Xen-devel] [PATCH] x86/hvm_event: fix uninitialized struct field usage introduced by c/s f5365e6

[Razvan Cojocaru <rcojocaru@xxxxxxxxxxxxxxx>]

On 02/18/2016 12:45 PM, Corneliu ZUZU wrote:
> c/s f5365e6: "xen/vm-events: Move parts of monitor_domctl code to 
> common-side",
> introduced a use without initialization issue.
> hvm_event_breakpoint calls hvm_event_traps(&req) and if sync is true that
> ors some bits into req->flags which was never initialised.
> Reported by Coverity Scan.
> 
> Initializes req @ hvm_event_breakpoint entry.
> 
> Signed-off-by: Corneliu ZUZU <czuzu@xxxxxxxxxxxxxxx>
> ---
>  xen/arch/x86/hvm/event.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/xen/arch/x86/hvm/event.c b/xen/arch/x86/hvm/event.c
> index 874a36c..cb9c152 100644
> --- a/xen/arch/x86/hvm/event.c
> +++ b/xen/arch/x86/hvm/event.c
> @@ -173,7 +173,7 @@ int hvm_event_breakpoint(unsigned long rip,
>  {
>      struct vcpu *curr = current;
>      struct arch_domain *ad = &curr->domain->arch;
> -    vm_event_request_t req;
> +    vm_event_request_t req = {};
>  
>      switch ( type )
>      {

Acked-by: Razvan Cojocaru <rcojocaru@xxxxxxxxxxxxxxx>

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