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Give up on proving termination [LWN.net]
summentier · 2026-06-21 · via LWN.net comments

Give up on proving termination

Posted Jun 21, 2026 10:33 UTC (Sun) by summentier (subscriber, #100638)
In reply to: Give up on proving termination by Cyberax
Parent article: Suspending and resuming BPF programs

Is that so? I thought the main point of the verifier was to check for illegal memory access, which, since BPF programs are AFAIK not sandboxed, could lead to crashes, corruption, and other calamaties.

The instruction limit stops the verifier from having to solve the halting problem. The guaranteed runtime limit seems to be a secondary benefit.