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Separate signed syscall results from transferred bytes and errors. Make resolved host identity conditional; record raw caller-namespace arguments and vector snapshot validity, completeness, and requested-capacity estimates. Generated schema and documentation were rebuilt from their source definitions.
This was referenced Sep 16, 2026
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Summary
Supersedes #787. Describe Linux process_vm_access attempts without treating the first remote vector as the entire request. Add signed syscall return, requested PID and caller namespace, flags, target resolution, snapshot validity/status and conditional capacities. Actual transferred bytes are nonnegative; errors are separate. Raw unsigned syscall arguments use unsigned_long mappings.
User metadata is a bounded entry snapshot and may race kernel import. Resolved host identity is absent when lookup was not reached; target lifetime uses CLOCK_MONOTONIC. Documentation and generated mappings follow the same contract.
Issue: https://github.com/elastic/endpoint-dev/issues/21204
Validation
Preflight:
20260916-pva-v2-release-final. Fleet acceptance:20260916T172021Z-process-vm-access, accepted buildendpoint-9.4.2-5564d77d41a8132d(Stack/Agent/Endpoint 9.4.2). Main integration was validated separately. Full persona-volume gate explicitly waived by the user; no production-volume claim.Sequential
make clean && make allpasses on main and the 9.4 acceptance lineage. Endpoint combined schemas are regenerated from these inputs. EAF validates event schema and documentation.Companions: elastic/quark#428 · https://github.com/elastic/endpoint-dev/pull/22027