On Thu, Feb 25, 2021 at 03:58:07PM -0500, Ed Maste wrote: > As of 9a227a2fd642 (main-n245052) base system binaries are now built > as position-independent executable (PIE) by default, for 64-bit > architectures. PIE executables are used in conjunction with address > randomization as a mitigation for certain types of security > vulnerabilities. > > If you track -CURRENT and normally build WITHOUT_CLEAN you'll need to > do one initial clean build -- either run `make cleanworld` or set > WITH_CLEAN=yes. > > No significant user-facing changes are expected from this change, but > there are some minor ones. For example, `file` will indicate that > binaries are PIE by reporting something like `ELF 64-bit LSB pie > executable` rather than `ELF 64-bit LSB executable`. Also, for most > workloads no notable performance impact is expected. > > For almost all ports this should result in no change. There are a > small number of ports that use base system /usr/share/mk > infrastructure and thus inherit the base system default, and some of > those initially failed to build. Those found during an exp-run in > PR253275 have been addressed or have patches waiting. > > Please watch out for any new issues after you next update the base > system and/or ports, and report issues via a Bugzilla PR or in reply > here.
Thats a huge step forward in terms on security. Thanks for the efforts and anyone involved. --Gordon
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