On Mon, Mar 23, 2026 at 09:05:39PM -0700, Kees Cook wrote: > While the original strncpy() would have copied a full 16 bytes from an > overlong name (producing an unterminated field that the syscall rejects), > but this wasn't a reachable state. This replacement will instead always > truncate to 15 bytes and keeps the NUL terminator, which should have no > behavioral changes with the present code and avoids potential issues > with future over-long string literals.
Hm, I got a failure report, but it *seems* unrelated? But nothing else fails that way recently, so I will try a v2 with the "unterminated at 16 bytes" behavior restored and see if it passes... test_progs_no_alu32-x86_64-llvm-21: https://github.com/kernel-patches/bpf/actions/runs/23472955268/job/68300440546 -- Kees Cook
