extra info. This is on debian wheezy, squid recompiled from jesse with icap and i did rebuild to a deb : squidclamav 6.11 bug 760303, which looks like it.
The bugcheck is : 2014/12/02 06:00:10 kid1| NETDB state saved; 633 entries, 2 msec 2014/12/02 06:25:04 kid1| Closing Pinger socket on FD 26 2014/12/02 06:25:18| Pinger exiting. *** glibc detected *** (pinger): free(): invalid next size (normal): 0x00007fb19ba45df0 *** ======= Backtrace: ========= /lib/x86_64-linux-gnu/libc.so.6(+0x76a16)[0x7fb1987b6a16] /lib/x86_64-linux-gnu/libc.so.6(cfree+0x6c)[0x7fb1987bb7bc] /usr/lib/x86_64-linux-gnu/libstdc++.so.6(_ZNSt19basic_ostringstreamIcSt11char_traitsIcESaIcEED0Ev+0xa6)[0x7fb19900dae6] (pinger)(+0x8d99)[0x7fb19a108d99] (pinger)(+0x59c5)[0x7fb19a1059c5] (pinger)(main+0x2a0)[0x7fb19a104550] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xfd)[0x7fb19875eead] (pinger)(+0x50a9)[0x7fb19a1050a9] ======= Memory map: ======== 7fb194000000-7fb194021000 rw-p 00000000 00:00 0 7fb194021000-7fb198000000 ---p 00000000 00:00 0 7fb198110000-7fb198116000 r-xp 00000000 ca:01 134270 /usr/lib/libnfnetlink.so.0.2.0 7fb198116000-7fb198315000 ---p 00006000 ca:01 134270 /usr/lib/libnfnetlink.so.0.2.0 7fb198315000-7fb198316000 rw-p 00005000 ca:01 134270 /usr/lib/libnfnetlink.so.0.2.0 7fb198318000-7fb19831c000 r-xp 00000000 ca:01 44 /lib/x86_64-linux-gnu/libattr.so.1.1.0 7fb19831c000-7fb19851b000 ---p 00004000 ca:01 44 /lib/x86_64-linux-gnu/libattr.so.1.1.0 7fb19851b000-7fb19851c000 r--p 00003000 ca:01 44 /lib/x86_64-linux-gnu/libattr.so.1.1.0 7fb19851c000-7fb19851d000 rw-p 00004000 ca:01 44 /lib/x86_64-linux-gnu/libattr.so.1.1.0 7fb198520000-7fb198537000 r-xp 00000000 ca:01 64 /lib/x86_64-linux-gnu/libpthread-2.13.so 7fb198537000-7fb198736000 ---p 00017000 ca:01 64 /lib/x86_64-linux-gnu/libpthread-2.13.so 7fb198736000-7fb198737000 r--p 00016000 ca:01 64 /lib/x86_64-linux-gnu/libpthread-2.13.so 7fb198737000-7fb198738000 rw-p 00017000 ca:01 64 /lib/x86_64-linux-gnu/libpthread-2.13.so 7fb198738000-7fb19873c000 rw-p 00000000 00:00 0 7fb19873f000-7fb198740000 rw-p 00000000 00:00 0 7fb198740000-7fb1988c2000 r-xp 00000000 ca:01 3330 /lib/x86_64-linux-gnu/libc-2.13.so 7fb1988c2000-7fb198ac2000 ---p 00182000 ca:01 3330 /lib/x86_64-linux-gnu/libc-2.13.so 7fb198ac2000-7fb198ac6000 r--p 00182000 ca:01 3330 /lib/x86_64-linux-gnu/libc-2.13.so 7fb198ac6000-7fb198ac7000 rw-p 00186000 ca:01 3330 /lib/x86_64-linux-gnu/libc-2.13.so 7fb198ac7000-7fb198acc000 rw-p 00000000 00:00 0 7fb198ad0000-7fb198ae5000 r-xp 00000000 ca:01 15 /lib/x86_64-linux-gnu/libgcc_s.so.1 7fb198ae5000-7fb198ce5000 ---p 00015000 ca:01 15 /lib/x86_64-linux-gnu/libgcc_s.so.1 7fb198ce5000-7fb198ce6000 rw-p 00015000 ca:01 15 /lib/x86_64-linux-gnu/libgcc_s.so.1 7fb198ce8000-7fb198d69000 r-xp 00000000 ca:01 3335 /lib/x86_64-linux-gnu/libm-2.13.so 7fb198d69000-7fb198f68000 ---p 00081000 ca:01 3335 /lib/x86_64-linux-gnu/libm-2.13.so 7fb198f68000-7fb198f69000 r--p 00080000 ca:01 3335 /lib/x86_64-linux-gnu/libm-2.13.so 7fb198f69000-7fb198f6a000 rw-p 00081000 ca:01 3335 /lib/x86_64-linux-gnu/libm-2.13.so 7fb198f70000-7fb199058000 r-xp 00000000 ca:01 133196 /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.17 7fb199058000-7fb199258000 ---p 000e8000 ca:01 133196 /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.17 7fb199258000-7fb199260000 r--p 000e8000 ca:01 133196 /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.17 7fb199260000-7fb199262000 rw-p 000f0000 ca:01 133196 /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.17 7fb199262000-7fb199277000 rw-p 00000000 00:00 0 7fb199278000-7fb19927a000 r-xp 00000000 ca:01 3333 /lib/x86_64-linux-gnu/libdl-2.13.so 7fb19927a000-7fb19947a000 ---p 00002000 ca:01 3333 /lib/x86_64-linux-gnu/libdl-2.13.so 7fb19947a000-7fb19947b000 r--p 00002000 ca:01 3333 /lib/x86_64-linux-gnu/libdl-2.13.so 7fb19947b000-7fb19947c000 rw-p 00003000 ca:01 3333 /lib/x86_64-linux-gnu/libdl-2.13.so 7fb199480000-7fb199487000 r-xp 00000000 ca:01 3348 /lib/x86_64-linux-gnu/librt-2.13.so 7fb199487000-7fb199686000 ---p 00007000 ca:01 3348 /lib/x86_64-linux-gnu/librt-2.13.so 7fb199686000-7fb199687000 r--p 00006000 ca:01 3348 /lib/x86_64-linux-gnu/librt-2.13.so 7fb199687000-7fb199688000 rw-p 00007000 ca:01 3348 /lib/x86_64-linux-gnu/librt-2.13.so 7fb199688000-7fb19969d000 r-xp 00000000 ca:01 143974 /usr/lib/x86_64-linux-gnu/libnetfilter_conntrack.so.3.3.0 7fb19969d000-7fb19989d000 ---p 00015000 ca:01 143974 /usr/lib/x86_64-linux-gnu/libnetfilter_conntrack.so.3.3.0 7fb19989d000-7fb19989f000 r--p 00015000 ca:01 143974 /usr/lib/x86_64-linux-gnu/libnetfilter_conntrack.so.3.3.0 7fb19989f000-7fb1998a0000 rw-p 00017000 ca:01 143974 /usr/lib/x86_64-linux-gnu/libnetfilter_conntrack.so.3.3.0 7fb1998a0000-7fb1998a4000 r-xp 00000000 ca:01 1084 /lib/x86_64-linux-gnu/libcap.so.2.22 7fb1998a4000-7fb199aa3000 ---p 00004000 ca:01 1084 /lib/x86_64-linux-gnu/libcap.so.2.22 7fb199aa3000-7fb199aa4000 rw-p 00003000 ca:01 1084 /lib/x86_64-linux-gnu/libcap.so.2.22 7fb199aa8000-7fb199abb000 r-xp 00000000 ca:01 3347 /lib/x86_64-linux-gnu/libresolv-2.13.so 7fb199abb000-7fb199cba000 ---p 00013000 ca:01 3347 /lib/x86_64-linux-gnu/libresolv-2.13.so 7fb199cba000-7fb199cbb000 r--p 00012000 ca:01 3347 /lib/x86_64-linux-gnu/libresolv-2.13.so 7fb199cbb000-7fb199cbc000 rw-p 00013000 ca:01 3347 /lib/x86_64-linux-gnu/libresolv-2.13.so 7fb199cbc000-7fb199cbe000 rw-p 00000000 00:00 0 7fb199cc0000-7fb199cd5000 r-xp 00000000 ca:01 3337 /lib/x86_64-linux-gnu/libnsl-2.13.so 7fb199cd5000-7fb199ed4000 ---p 00015000 ca:01 3337 /lib/x86_64-linux-gnu/libnsl-2.13.so 7fb199ed4000-7fb199ed5000 r--p 00014000 ca:01 3337 /lib/x86_64-linux-gnu/libnsl-2.13.so 7fb199ed5000-7fb199ed6000 rw-p 00015000 ca:01 3337 /lib/x86_64-linux-gnu/libnsl-2.13.so 7fb199ed6000-7fb199ed8000 rw-p 00000000 00:00 0 7fb199ed8000-7fb199ef8000 r-xp 00000000 ca:01 3322 /lib/x86_64-linux-gnu/ld-2.13.so 7fb19a0f6000-7fb19a0f7000 rw-p 00000000 00:00 0 7fb19a0f7000-7fb19a0f8000 r--p 0001f000 ca:01 3322 /lib/x86_64-linux-gnu/ld-2.13.so 7fb19a0f8000-7fb19a0f9000 rw-p 00020000 ca:01 3322 /lib/x86_64-linux-gnu/ld-2.13.so 7fb19a0f9000-7fb19a0fc000 rw-p 00000000 00:00 0 7fb19a0fc000-7fb19a100000 rw-p 00000000 00:00 0 7fb19a100000-7fb19a110000 r-xp 00000000 ca:01 133720 /usr/lib/squid3/pinger 7fb19a110000-7fb19a113000 rw-p 00000000 00:00 0 7fb19a310000-7fb19a311000 r--p 00010000 ca:01 133720 /usr/lib/squid3/pinger 7fb19a311000-7fb19a312000 rw-p 00011000 ca:01 133720 /usr/lib/squid3/pinger 7fb19a312000-7fb19a326000 rw-p 00000000 00:00 0 7fb19ba45000-7fb19ba66000 rw-p 00000000 00:00 0 [heap] 7fffab03e000-7fffab05f000 rw-p 00000000 00:00 0 [stack] 7fffab078000-7fffab079000 r-xp 00000000 00:00 0 [vdso] ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall] squid config file : auth_param basic program /usr/lib/squid3/basic_ldap_auth -v 3 \ -b "dc=internal,dc=domain,dc=tld" \ -D cn=replicator,dc=internal,dc=domain,dc=tld -W /etc/squid3/private/ldap-bind \ -f uid=%s ldap.internal.domain.tld auth_param basic realm domain Internet Proxy. auth_param basic children 100 auth_param basic credentialsttl 3 hours acl authenticated proxy_auth REQUIRED acl snmppublic snmp_community public4domain acl work-ochtend time MTWHF 08:15-11:59 acl work-pauze time MTWHF 12:00-13:30 acl work-middag time MTWHF 13:31-17:00 acl no-work-hours time MTWHF 17:01-23:59 acl no-work-hours time MTWHF 00:00-08:14 acl media rep_mime_type video/flv video/x-flv acl media rep_mime_type -i ^video/ acl media rep_mime_type -i ^video\/ acl media rep_mime_type ^application/x-shockwave-flash acl media rep_mime_type ^application/vnd.ms.wms-hdr.asfv1 acl media rep_mime_type ^application/x-fcs acl media rep_mime_type ^application/x-mms-framed acl media rep_mime_type ^video/x-ms-asf acl media rep_mime_type ^audio/mpeg acl media rep_mime_type ^audio/x-scpls acl media rep_mime_type ^video/x-flv acl media rep_mime_type ^video/mpeg4 acl media rep_mime_type ms-hdr acl media rep_mime_type x-fcs acl mediapr urlpath_regex \.flv(\?.*)?$ acl mediapr urlpath_regex -i \.(avi|mp4|mov|m4v|mkv|flv)(\?.*)?$ acl mediapr urlpath_regex -i \.(mpg|mpeg|avi|mov|flv|wmv|mkv|rmvb)(\?.*)?$ acl whitelistsites url_regex -i "/etc/squid3/acl/allowed-sites.txt" acl blockedsites dstdom_regex -i "/etc/squid3/acl/blocked-sites.txt" acl ads dstdom_regex "/etc/squid3/acl/blocked-ads-bydomain.txt" acl whitelistdirect url_regex -i "/etc/squid3/acl/allowed-direct-sites.txt" acl allow_client_mac arp "/etc/squid3/acl/allow-arp-client.txt" acl lan-domainname dstdomain .internal.domain.tld acl wan-domainname dstdomain .domain.tld acl localnet-rtd-beveiligin src 192.168.0.208 acl localnet-rtd-mailhopper src 192.168.0.216 acl localnet-rtd-antivirus src 192.168.0.218 acl localnet-rtd-xen1 src 192.168.0.219 acl localnet-rtd-gateway src 192.168.0.220 acl localnet-rtd-mail1 src 192.168.0.227 acl localnet-rtd-lin-228 src 192.168.0.228 acl localnet-rtd-lin-009 src 192.168.0.229 acl localnet-rtd-monitoring src 192.168.0.242 acl localnet-rtd-lin-003 src 192.168.0.243 acl localnet-rtd-server-range src 192.168.0.211-192.168.0.254 acl localnet-rtd-tel src 10.249.0.200 acl localnet-esa src 172.20.20.0/24 acl windowsupdate dstdomain windowsupdate.microsoft.com acl windowsupdate dstdomain .update.microsoft.com acl windowsupdate dstdomain download.windowsupdate.com acl windowsupdate dstdomain redir.metaservices.microsoft.com acl windowsupdate dstdomain images.metaservices.microsoft.com acl windowsupdate dstdomain c.microsoft.com acl windowsupdate dstdomain www.download.windowsupdate.com acl windowsupdate dstdomain wustat.windows.com acl windowsupdate dstdomain crl.microsoft.com acl windowsupdate dstdomain sls.microsoft.com acl windowsupdate dstdomain productactivation.one.microsoft.com acl windowsupdate dstdomain ntservicepack.microsoft.com acl windowsupdate dstdomain au.download.windowsupdate.com acl windowsupdate dstdomain ds.download.windowsupdate.com acl windowsupdate dstdomain ctldl.windowsupdate.com acl antivirusupdate dstdomain .trendmicro.com acl antivirusupdate dstdomain safebrowsing.google.com acl antivirusupdate dstdomain safebrowsing-cache.google.com acl CONNECT method CONNECT acl wuCONNECT dstdomain www.update.microsoft.com acl wuCONNECT dstdomain sls.microsoft.com http_access deny !Safe_ports http_access deny CONNECT !SSL_ports http_access allow localhost manager http_access deny manager http_access deny to_localhost http_access allow CONNECT wuCONNECT localnet http_access allow windowsupdate localnet http_access allow antivirusupdate localnet http_access allow localnet-rtd-server-range localnet http_access allow localnet-rtd-tel localnet http_access allow lan-domainname localnet http_access allow wan-domainname localnet http_access allow whitelistdirect localnet http_access deny blockedsites http_access deny ads deny_info TCP_RESET ads http_access allow authenticated http_access allow localnet http_access allow whitelistsites http_access deny all http_port 192.168.0.221:3128 http_port 192.168.0.221:8080 cache_mem 2048 MB maximum_object_size_in_memory 2 MB cache_replacement_policy heap LFUDA cache_dir ufs /var/spool/squid3 8192 16 256 max-size=100663296 maximum_object_size 200 MB access_log udp:192.168.0.242:514 squid coredump_dir /var/spool/squid3 ftp_user anonymous...@domain.tld cache deny localnet-man cache deny localnet-tel cache deny localnet-rtd-server-range refresh_pattern -i microsoft.com/.*\.(cab|exe|ms[i|u|f]|[ap]sf|wm[v|a]|dat|zip) 4320 80% 43200 reload-into-ims refresh_pattern -i windowsupdate.com/.*\.(cab|exe|ms[i|u|f]|[ap]sf|wm[v|a]|dat|zip) 4320 80% 43200 reload-into-ims refresh_pattern -i windows.com/.*\.(cab|exe|ms[i|u|f]|[ap]sf|wm[v|a]|dat|zip) 4320 80% 43200 reload-into-ims refresh_pattern ^(ht|f)tp://.*debian.*/Packages\.(bz2|gz|diff/Index)$ 0 0% 0 refresh_pattern ^(ht|f)tp://.*debian.*/Release(\.gpg)?$ 0 0% 0 refresh_pattern ^(ht|f)tp://.*debian.*/Sources\.(bz2|gz|diff/Index)$ 0 0% 0 refresh_pattern ^(ht|f)tp://.*debian.*/Translation-en_GB\.bz2)$ 0 0% 0 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 quick_abort_min -1 range_offset_limit 200 MB windowsupdate range_offset_limit 200 MB antivirusupdate request_header_access X-Forwarded-For deny all request_header_access Via deny all connect_timeout 5 seconds cache_mgr webmas...@domain.tld visible_hostname rtd-proxy1.internal.domain.tld snmp_port 3401 snmp_access allow snmppublic localnet-rtd-monitoring snmp_access deny all icp_port 3130 htcp_port 4827 error_directory /usr/share/squid-langpack/nl icap_enable on icap_send_client_ip on icap_send_client_username on icap_client_username_header X-Authenticated-User icap_persistent_connections on 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 fqdncache_size 2048 cachemgr_passwd disable all packages list. dpkg -l | grep squid ii libc-icap-mod-squidclamav 6.11-1-rushcompany amd64 ICAP Antivirus Service for c-icap ii squid-cgi 3.4.8-2 amd64 Full featured Web Proxy cache (HTTP proxy) - control CGI ii squid-langpack 20120616-1 all Localized error pages for Squid ii squid-purge 3.4.8-2 amd64 Full featured Web Proxy cache (HTTP proxy) - control utility ii squid3 3.4.8-2 amd64 Full featured Web Proxy cache (HTTP proxy) ii squid3-common 3.4.8-2 all Full featured Web Proxy cache (HTTP proxy) - common files ii squidclient 3.4.8-2 amd64 Full featured Web Proxy cache (HTTP proxy) - control utility dpkg -l | grep clamav ii clamav 0.98.4+dfsg-0+deb7u2 amd64 anti-virus utility for Unix - command-line interface ii clamav-base 0.98.4+dfsg-0+deb7u2 all anti-virus utility for Unix - base package ii clamav-daemon 0.98.4+dfsg-0+deb7u2 amd64 anti-virus utility for Unix - scanner daemon ii clamav-freshclam 0.98.4+dfsg-0+deb7u2 amd64 anti-virus utility for Unix - virus database update utility ii libc-icap-mod-squidclamav 6.11-1-rushcompany amd64 ICAP Antivirus Service for c-icap ii libclamav6 0.98.4+dfsg-0+deb7u2 amd64 anti-virus utility for Unix - library dpkg -l | grep icap ii c-icap 1:0.3.4-1 amd64 ICAP server implementation ii libc-icap-mod-squidclamav 6.11-1-rushcompany amd64 ICAP Antivirus Service for c-icap ii libicapapi3 1:0.3.4-1 amd64 ICAP API library -- To UNSUBSCRIBE, email to debian-bugs-rc-requ...@lists.debian.org with a subject of "unsubscribe". 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