net/9p: use a dedicated spinlock for trans_fd
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.15.80 by commit 43bbadb7e4636dc02f6a283c2a39e6438e6173cd. For more details please see the references link.