Fix: capture_sequence_element_{un,}signed: handle user-space input
The "user" attribute (copy from userspace) is not applied to
sequence/array of integer field capture within event notifications. This
could eventually lead to unsafe copy of integers from user-space.
Currently, the only array/sequence of integers which are read from
user-space are the arguments to sys_select (e.g. `readfds` field). Those
are expressed as "custom" fields, which are skipped by the filter and
capture bytecode.
This is therefore not an issue with the current instrumentation, but we
should properly handle this nevertheless.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Change-Id: Icf0c141d333f63402d8a76051bcd53fcdd5ed8c2
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