[squid-users] Squid process crashed

[Usama Mehboob]

I have squid 5.3 running on amazon linux 2 and it was running fine for some
weeks until it suddenly stopped working yesterday on our production server
and caused outage. I have set it to auto-restart for now. But if someone
could review my squid.conf file and see if there is something wrong?
This is the error I saw
===
2022/04/06 00:45:31| FATAL: xcalloc: Unable to allocate 1 blocks of 68431
bytes!
current master transaction: master27687315
2022/04/06 00:45:31| Squid Cache (Version 5.3): Terminated abnormally.
current master transaction: master27687315
===
squid.conf
---
[ec2-user at ip-172-24-9-143 ~]$ sudo cat /usr/local/squid/etc/squid.conf
#
# Recommended minimum configuration:
#

# Example rule allowing access from your local networks.
# Adapt to list your (internal) IP networks from where browsing
# should be allowed
acl localnet src 0.0.0.1-0.255.255.255 # RFC 1122 "this" network (LAN)
acl localnet src 10.0.0.0/8 # RFC 1918 local private network (LAN)
acl localnet src 100.64.0.0/10 # RFC 6598 shared address space (CGN)
acl localnet src 169.254.0.0/16 # RFC 3927 link-local (directly plugged)
machines
acl localnet src 172.16.0.0/12 # RFC 1918 local private network (LAN)
acl localnet src 192.168.0.0/16 # RFC 1918 local private network (LAN)
acl localnet src fc00::/7       # RFC 4193 local private network range
acl localnet src fe80::/10       # RFC 4291 link-local (directly plugged)
machines

acl SSL_ports port 443
acl Safe_ports port 80 # http
acl Safe_ports port 21 # ftp
acl Safe_ports port 443 # https
acl Safe_ports port 70 # gopher
acl Safe_ports port 210 # wais
acl Safe_ports port 1025-65535 # unregistered ports
acl Safe_ports port 280 # http-mgmt
acl Safe_ports port 488 # gss-http
acl Safe_ports port 591 # filemaker
acl Safe_ports port 777 # multiling http

server_idle_pconn_timeout 60 minute
connect_timeout 60 minute
read_timeout 60 minute
write_timeout 60 minute
request_timeout 60 minute

#
# Recommended minimum Access Permission configuration:
#
# Deny requests to certain unsafe ports
http_access deny !Safe_ports

# Deny CONNECT to other than secure SSL ports
http_access deny CONNECT !SSL_ports

# Only allow cachemgr access from localhost
#http_access allow localhost manager
http_access deny manager

# We strongly recommend the following be uncommented to protect innocent
# web applications running on the proxy server who think the only
# one who can access services on "localhost" is a local user
#http_access deny to_localhost

#
# INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS
#

# Filter HTTPS requests based on the whitelist
acl allowed_https_sites ssl::server_name .pypi.org .pythonhosted.org .
tfhub.dev .gstatic.com .googleapis.com
acl allowed_https_sites ssl::server_name .veevasourcedev.com .
veevasource.com .google.com
acl allowed_https_sites ssl::server_name .amazonaws.com

# Example rule allowing access from your local networks.
# Adapt localnet in the ACL section to list your (internal) IP networks
# from where browsing should be allowed
#http_access allow localnet
#http_access allow localhost

# And finally deny all other access to this proxy
#http_access deny all

# Squid normally listens to port 3128
http_port 3128
https_port 3130 intercept ssl-bump cert=/usr/local/squid/ssl_cert/myCA.pem
generate-host-certificates=on dynamic_cert_mem_cache_size=256MB
http_access allow SSL_ports
sslcrtd_program /usr/local/squid/libexec/security_file_certgen -s
/usr/local/squid/var/lib/ssl_db -M 256MB
#sslcrtd_children 3 startup=1 idle=1
#tls_outgoing_options options=NO_SSLv3

acl step1 at_step SslBump1
acl step2 at_step SslBump2
acl step3 at_step SslBump3
##ssl_bump peek step1 all
ssl_bump peek step1
ssl_bump peek step2 allowed_https_sites
##ssl_bump splice step3 allowed_https_sites
ssl_bump splice step3 allowed_https_sites
#ssl_bump bump all
ssl_bump terminate step2 all
#ssl_bump bump all
#http_access allow allowed_https_sites
http_access deny all

# Uncomment and adjust the following to add a disk cache directory.
#cache_dir ufs /usr/local/squid/var/cache/squid 100 16 256

# Leave coredumps in the first cache dir
coredump_dir /usr/local/squid/var/cache/squid

#
# Add any of your own refresh_pattern entries above these.
#
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern -i (/cgi-bin/|\?) 0 0% 0
refresh_pattern . 0 20% 4320

logformat custom  %tg rep_time==%1tr %>a %Ss/%03>Hs %<st %[un %Sh/%<a %mt
-- %ssl::bump_mode %ssl::>sni server==> %ssl::<cert_subject
err=%ssl::<cert_errors %ssl::<negotiated_version
%ssl::<received_supported_version %ssl::<received_hello_version
%ssl::<negotiated_version
access_log  /usr/local/squid/var/logs/access.log custom
debug_options ALL, 2, rotate=1
forwarded_for delete
via off
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