[squid-users] MemBuf Error

I built a new system with squid 3.1.20 a few weeks ago and my cache.log
reports an assertion failed: membuf.cc:280: "size < capacity" error and
squid restarts about once a day. My server is SLES 11 SP2, 64bit, 12GB RAM.
I'm also running squidclamav 6.8 , icap 0.2.1, and ClamAV 0.97.5. My
squid.conf file is below. My original server was squid 3.1.16 on SLES 11
SP1 which was running for 6-8 months without any problems.

Any help is appreciated.

#
# Recommended minimum configuration:
#
acl manager proto cache_object
acl localhost src 127.0.0.1/32 ::1
acl to_localhost dst 127.0.0.0/8 0.0.0.0/32 ::1

# Example rule allowing access from your local networks.
# Adapt to list your (internal) IP networks from where browsing
# should be allowed
acl localnet src 10.10.0.0/16 # RFC1918 possible internal network
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 SSL_ports port 7001
acl SSL_ports port 8004
acl Safe_ports port 80 # http
acl Safe_ports port 81 # 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
acl CONNECT method CONNECT

acl snmppublic snmp_community cadc
acl snmpsrv src 10.10.2.140
snmp_access allow snmppublic snmpsrv
snmp_incoming_address 10.10.2.225
snmp_port 3401

# Recommended minimum Access Permission configuration:
# Only allow cachemgr access from localhost
acl cachemgr src 10.10.2.142
http_access allow manager cachemgr
http_access deny manager

# 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

# 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
acl libsyn dstdomain .libsyn.com
http_access deny libsyn

# Example rule allowing access from your local networks.
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 10.10.2.225:3128

# We recommend you to use at least the following line.
hierarchy_stoplist cgi-bin ?

# Uncomment and adjust the following to add a disk cache directory.
cache_replacement_policy heap LFUDA
cache_dir aufs /cache/cache 16384 16 256

# Leave coredumps in the first cache dir
coredump_dir /var/log/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

icap_enable on
icap_send_client_ip on
icap_send_client_username on
icap_client_username_encode off
icap_client_username_header X-Authenticated-User
icap_preview_enable on
icap_preview_size 1024
icap_service service_req reqmod_precache bypass=1
icap://127.0.0.1:1344/squidclamav
adaptation_access service_req allow all
icap_service service_resp respmod_precache bypass=1
icap://127.0.0.1:1344/squidclamav
adaptation_access service_resp allow all

access_log /var/log/squid/access.log
logfile_rotate 5
cache_mgr squid_at_cadc.circdc.dcn
ftp_user squid_at_cadc.circdc.dcn
dns_nameservers 156.132.106.29
refresh_all_ims on
shutdown_lifetime 5 seconds
max_filedescriptors 4096
cache_effective_user squid
ipcache_size 4096
cache_mem 512 MB
memory_replacement_policy lru
maximum_object_size 10240 KB
Received on Wed Sep 05 2012 - 12:45:16 MDT