CVE-2023-54007 vmci_host: fix a race condition in vmci_host_poll() causing GPF

In the Linux kernel, the following vulnerability has been resolved: vmcihost: fix a race condition in vmcihostpoll causing GPF During fuzzing, a general protection fault is observed in vmcihostpoll. general protection fault, probably for non-canonical address 0xdffffc0000000019: 0000 1 PREEMPT SM...