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The recent docker upgrade to debian `bookworm` caused
x86_64 instances to fail in `pthread_create()` due to the
android seccomp filter.
On `bookworm`, `pthread_create()` calls `clone3()` and
`set_robust_list()` which aren't on the seccomp filter (instead
of `clone()`), which is. Added these calls to the seccomp policy.
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These were last updated for Android Q in or around 2020. These were
re-generated using the 'genseccomppy.py' script in the Android build
tree.
Since the filters have changed during the intervening time, fuzzing with
'sandbox: android' no longer accurately reflected what untrusted apps
can access on the device.
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This adds support for the seccomp filters that are part of Android into
the sandbox. A process running as untrusted_app in Android has a
restricted set of syscalls that it is allow to run. This is
accomplished by setting seccomp filters in the zygote process prior to
forking into the application process. The seccomp filter list comes
directly from the Android source, it cannot be dynamically loaded from
an Android phone because libseccomp_policy.so does not exist as a
library on the system partition.
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