[google/syzkaller] 679454: pkg/aflow: add notion of flow errors

[Dmitry Vyukov]

Branch: refs/heads/gh-readonly-queue/master/pr-6620-592aa8f1268e40b9d75deb6d87166e02ac558974
Home: https://github.com/google/syzkaller
Commit: 67945471d459ce8031b65988d49bf03b726ae691
https://github.com/google/syzkaller/commit/67945471d459ce8031b65988d49bf03b726ae691
Author: Dmitry Vyukov <dvy...@google.com>
Date: 2026-01-16 (Fri, 16 Jan 2026)

Changed paths:
M pkg/aflow/action/crash/reproduce.go
M pkg/aflow/action/kernel/build.go
M pkg/aflow/execute.go
M syz-agent/agent.go

Log Message:
-----------
pkg/aflow: add notion of flow errors

Flow errors denote failure of the flow itself,
rather than an infrastructure error. A flow errors mean an expected
condition in the flow when it cannot continue, and cannot produce
expected outputs. For example, if we are doing something with the kernel,
but the kernel build fails. Flow errors shouldn't be flagged in

Fixes #6610



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[Dmitry Vyukov]

Branch: refs/heads/master