CVE-2025-40117 misc: pci_endpoint_test: Fix array underflow in pci_endpoint_test_ioctl()

In the Linux kernel, the following vulnerability has been resolved: misc: pciendpointtest: Fix array underflow in pciendpointtestioctl Commit eefb83790a0d "misc: pciendpointtest: Add doorbell test case" added NOBAR -1 to the pcibarno enum which, in practical terms, changes the enum from an unsign...