In the Linux kernel, the following vulnerability has been resolved:
bpf: drop unnecessary user-triggerable WARN_ONCE in verifierl log
Its trivial for user to trigger verifier log line truncated warning, as verifier has a fixed-sized buffer of 1024 bytes (as of now), and there are at least two pieces of user-provided information that can be output through this buffer, and both can be arbitrarily sized by user:
Verifier log buffer should be properly sized for typical verifier state output. But its sort-of expected that this buffer wont be long enough in some circumstances. So lets drop the check. In any case code will work correctly, at worst truncating a part of a single line output.