KVM: release anon file in failure path of vm creation

The failure of create debugfs of VM will return directly without release
the anon file. It will leak memory and file descriptors, even through
be not serious.

Signed-off-by: Liu Shuo <shuo.a.liu@intel.com>
Fixes: 536a6f88c49dd739961ffd53774775afed852c83
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index dd25346ec356b53308bf99ca140f2996b8c5a85b..cc182d9760edcce62ac3f15a176015122b35753e 100644 (file)
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -49,6 +49,7 @@
 #include <linux/slab.h>
 #include <linux/sort.h>
 #include <linux/bsearch.h>
+#include <linux/syscalls.h>
 
 #include <asm/processor.h>
 #include <asm/io.h>
@@ -3069,6 +3070,7 @@ static int kvm_dev_ioctl_create_vm(unsigned long type)
 
        if (kvm_create_vm_debugfs(kvm, r) < 0) {
                kvm_put_kvm(kvm);
+               sys_close(r);
                return -ENOMEM;
        }