armv7 has no seccomp filter since HAVE_ARCH_SECCOMP_FILTER is not selected by armv7. Only arm64 selects HAVE_ARCH_SECCOMP_FILTER. In 2012 some patches were sent to add this support to armv7, but never ended in the kernel: http://lkml.iu.edu/hypermail/linux/kernel/1210.3/03963.html