reproduce (this is a W=1 build):
        git checkout 949ddfb774fe527cebfa3f769804344940f7ed2e
        b4 shazam https://lore.kernel.org/r/20250916-vsock-vmtest-v6-3-064d2eb0c89d@meta.com
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 olddefconfig
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash net/vmw_vsock/