System: Centos 7 running bind-chroot-9.9.4 and Selinux enabled

Secondary zone files when transferred have the following entry  in /var/log/messages

Apr 19 12:43:16 ns1 named[3892]: transfer of '1.10.10.in-addr.arpa/IN' from 10.10.1.40#53: connected using 10.10.2.4#56641
Apr 19 12:43:17 ns1 named[3892]: zone 1.10.10.in-addr.arpa/IN: transferred serial 63
Apr 19 12:43:17 ns1 named[3892]: transfer of '1.10.10.in-addr.arpa/IN' from 10.10.1.40#53: Transfer completed: 1 messages, 15 records, 674 bytes, 0.243 secs (2773 bytes/sec)
Apr 19 12:43:17 ns1 named[3892]: dumping master file: tmp-6J9rD6txvB: open: permission denied

Execute

setsebool -P named_write_master_zones true

to allow writing of zone files through SELinux.