Seccomp stops mmproxy due to syscall writev

SECCOMP auid=123456789 uid=0 gid=0 ses=123456789 subj==unconfined pid=xxxxx comm="mmproxy" exe="/usr/bin/mmproxy" sig=31 arch=c000003e syscall=20 compat=0 ip=xxxxxxxxx code=0x0
kernel: audit: type=1326 audit(xxxx): auid=123456789 uid=0 gid=0 ses=123456789 subj==unconfined pid=27504 comm="mmproxy" exe="/usr/bin/mmproxy" sig=31 arch=c000003e syscall=20 compat=0 ip=xxxxxx code=0x0

The writev is from the function __libc_message

Most likely caused by the same crash as discussed in #13