Enabling CONFIG_HARDENED_USERCOPY would force CONFIG_BUG, because its Kconfig (improperly?) requires that. I've submitted this upstream to resolve that issue:
https://<email address hidden>/T/#u
Pending acceptance, we should apply that to linux-kvm before enabling HARDENED_USERCOPY.
Notes:
Enabling CONFIG_ HARDENED_ USERCOPY would force CONFIG_BUG, because its Kconfig (improperly?) requires that. I've submitted this upstream to resolve that issue:
https://<email address hidden>/T/#u
Pending acceptance, we should apply that to linux-kvm before enabling HARDENED_USERCOPY.