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longlho
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Sep 14, 2026
Run a declared Chromium screenshot action through actiond's VM/REAPI. Reuses [actiond#48](hermeticbuild/actiond#48), the required `CONFIG_ADVISE_SYSCALLS=y` patch for both guest kernels and a minimal syscall regression probe. Validation: stock VM fails with `madvise: ENOSYS`; [patched amd64 VM passes](https://github.com/perplexityai/rules_web_e2e/actions/runs/34775967325) and returns identical PNGs matching the local sandbox run.
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CONFIG_ADVISE_SYSCALLSin both guest kernels. Withallnoconfig, its omission makesmadvise(MADV_DONTNEED)returnENOSYS, causing Node/V8 to abort during initialization.Validation: stock VM fails the syscall probe; patched amd64 VM passes the probe and Chromium screenshot action. Local
bazel build //...andbazel test --build_tests_only //...pass (remote uploads disabled; local spawn strategy). macOS/ARM64 VM execution was not run.