Follow-up for 68acc1afbe5cec50da1ffdc411dadda504e4caf5. Before the commit, SystemCallFilter bus property provides only allowed syscalls if ExecContext.syscall_filter is an allow-list, and vice versa. After the commit, if the list is allow-list, it contains allowed syscalls with value `-1`, and denied syscalls with non-negative values. To keep the backward compatibility, denied syscalls must be dropped in SystemCallFilter bus property.
System and Service Manager
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