bpftrace permission

[jimmauro]

I used snap to install bpftrace. I get the following errors when attempting to use bpftrace:

# bpftrace -e 'tracepoint:raw_syscalls:sys_enter { @[comm] = count(); }'
Error creating map: '@': Operation not permitted
Error creating printf map: Operation not permitted
Creation of the required BPF maps has failed.
Make sure you have all the required permissions and are not confined (e.g. like
snapcraft does). `dmesg` will likely have useful output for further troubleshooting

Based on my research so far, this looks like kernel lockdown. Kernel version and CentOS release information below.
I seek advice on how to open permission so I can effectively use bpftrace.

Thanks
Jim

# uname -r
4.20.0-1.el7.elrepo.x86_64
# cat /etc/os-release
NAME="CentOS Linux"
VERSION="7 (Core)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="7"
PRETTY_NAME="CentOS Linux 7 (Core)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:7"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"

CENTOS_MANTISBT_PROJECT="CentOS-7"
CENTOS_MANTISBT_PROJECT_VERSION="7"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="7"

[TrevorH]

Try it with the distro kernel.