commit
d18b2f43b9147c8005ae0844fb445d8cc6a87e31 upstream.
Check the result of __vmalloc() to avoid dereferencing a NULL pointer in
the event that allocation failres.
Fixes:
d1e5b0e98ea27 ("kvm: Make VM ioctl do valloc for some archs")
Cc: stable@vger.kernel.org
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
static struct kvm *svm_vm_alloc(void)
{
struct kvm_svm *kvm_svm = vzalloc(sizeof(struct kvm_svm));
+
+ if (!kvm_svm)
+ return NULL;
+
return &kvm_svm->kvm;
}
static struct kvm *vmx_vm_alloc(void)
{
struct kvm_vmx *kvm_vmx = vzalloc(sizeof(struct kvm_vmx));
+
+ if (!kvm_vmx)
+ return NULL;
+
return &kvm_vmx->kvm;
}