On Tue, 2023-10-17 at 20:03 +0200, Ben Hutchings wrote:
> On Tue, 2023-10-17 at 10:57 -0500, Justin wrote:
> > Hello all,
> >
> > I have recently encountered a case where a VIA C3 Nehemaiah CPU returns "Illegal
> > Instruction" when trying to run 'sudo' or 'visudo'.
> >
> > After some poking around, I discovered that the FreeBSD folks have encountered this
> > as well, and that it appears to be an issue with GCC where the --fcf-protection
> > option results in the use of the ENDBR32 instruction, which is not supported on the
> > VIA C3 Nehemaiah processor (despite being otherwise i686-compatible).
> [...]
>
> ENDBR32 uses one of the previously reserved hint encodings that i686
> processors are supposed to ignore if they don't specifically support
> them. The release notes for Debian 12 "bookworm" state that the i386
> architecture now requires that:
> https://www.debian.org/releases/testing/release-notes/issues.en.html#i386-is-i686
Sorry, the page I linked is for testing ("trixie", which will become
Debian 13). Debian 12 "bookworm" is supposed to still support this
CPU.
Ben.
--
Ben Hutchings
To err is human; to really foul things up requires a computer.
Attachment:
signature.asc
Description: This is a digitally signed message part