segmentation fault in hs_free_scratch release 5.4.0

Program terminated with signal 11, Segmentation fault.
#0 hs_free_scratch (scratch=0x7f85d8000040) at /root/hyperscan-5.4.0/src/scratch.c:416
416 /root/hyperscan-5.4.0/src/scratch.c: No such file or directory.
Missing separate debuginfos, use: debuginfo-install cyrus-sasl-lib-2.1.26-23.el7.x86_64 glibc-2.17-307.el7.1.x86_64 keyutils-libs-1.5.8-3.el7.x86_64 krb5-libs-1.15.1-46.el7.x86_64 libcom_err-1.42.9-17.el7.x86_64 libcurl-7.29.0-57.el7.x86_64 libgcc-4.8.5-39.el7.x86_64 libidn-1.28-4.el7.x86_64 libselinux-2.5-15.el7.x86_64 libssh2-1.8.0-3.el7.x86_64 libstdc++-4.8.5-39.el7.x86_64 nspr-4.21.0-1.el7.x86_64 nss-3.44.0-7.el7_7.x86_64 nss-softokn-freebl-3.44.0-8.el7_7.x86_64 nss-util-3.44.0-4.el7_7.x86_64 openldap-2.4.44-21.el7_6.x86_64 openssl-libs-1.0.2k-19.el7.x86_64 pcre-8.32-17.el7.x86_64 zlib-1.2.7-18.el7.x86_64
(gdb) bt
#0 hs_free_scratch (scratch=0x7f85d8000040) at /root/hyperscan-5.4.0/src/scratch.c:416

The code which generates this core is just single incident in last 1 year. This code is still running at very good TPS. I want any opinion on the possible RCA of this bug.