I've been having problems with squid crashing, especially during busier times. This is with RH 7.2 on s390.
Squid Cache: Version 2.5.STABLE3 configure options: s390-redhat-linux --prefix=/usr --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc --datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib --libexecdir=/usr/libexec --localstatedir=/var --sharedstatedir=/usr/com --mandir=/usr/share/man --infodir=/usr/share/info --exec_prefix=/usr --bindir=/usr/sbin --libexecdir=/usr/lib/squid --localstatedir=/var --sysconfdir=/etc/squid --enable-poll --enable-snmp --enable-removal-policies=heap,lru --enable-storeio=aufs,coss,diskd,ufs,null --enable-ssl --with-openssl=/usr/kerberos --enable-delay-pools --enable-linux-netfilter --with-pthreads '--enable-auth=basic ntlm' --enable-basic-auth-helpers --enable-ntlm-auth-helpers --enable-external-acl-helpers The samba is 2.2.8a. Here's the conf http_port 80 debug_options ALL,1 cache_dir null /tmp cache_store_log none cache_access_log /var/www/html/squid/daily/logs/access.log cache_log /var/www/html/squid/daily/logs/cache.log auth_param ntlm program /usr/lib/squid/wb_ntlmauth auth_param ntlm children 96 auth_param ntlm max_challenge_reuses 0 auth_param ntlm max_challenge_lifetime 2 minutes auth_param basic program /usr/lib/squid/wb_auth auth_param basic children 5 auth_param basic realm Proxy auth_param basic credentialsttl 40 hours external_acl_type NT_global_group ttl=3600 negative_ttl=600 concurrency=20 %LOGIN /usr/lib/squid/wbinfo_group.pl refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern . 0 20% 4320 acl password proxy_auth REQUIRED acl all src 0.0.0.0/0.0.0.0 no_cache deny all acl manager proto cache_object acl localhost src 127.0.0.1/255.255.255.255 acl to_localhost dst 127.0.0.0/8 acl SSL_ports port 443 563 acl Safe_ports port 80 # http acl Safe_ports port 21 # ftp acl Safe_ports port 443 563 # https, snews 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 NTauth external NT_global_group InternetHTTP http_access allow manager localhost http_access deny manager http_access deny !Safe_ports http_access deny CONNECT !SSL_ports http_access allow NTauth http_reply_access allow all cache_mgr (my_email) cache_effective_user squid cache_effective_group squid coredump_dir /var/log/squid/core/ logfile_rotate 3 Here's a sample of some of the /var/log/messages errors. Jul 28 12:46:31 linprox kernel: User process fault: interruption code 0x10 Jul 28 12:46:31 linprox kernel: failing address: 1010000 Jul 28 12:46:31 linprox kernel: CPU: 0 Jul 28 12:46:31 linprox kernel: Process squid (pid: 998, stackpage=04FB3000) Jul 28 12:46:31 linprox kernel: Jul 28 12:46:31 linprox kernel: User PSW: 070dd000 c02b601e Tainted: PF Jul 28 12:46:31 linprox kernel: task: 04fb2000 ksp: 04fb3cf8 pt_regs: 04fb3f68 Jul 28 12:46:31 linprox kernel: User GPRS: Jul 28 12:46:31 linprox kernel: 0092ae70 00000003 01010101 000dc6e8 Jul 28 12:46:31 linprox kernel: 01010101 4035cb50 00000000 7fffd4d8 Jul 28 12:46:31 linprox kernel: 01010101 00000000 00000000 7fffcde8 Jul 28 12:46:31 linprox kernel: c03601ec c02b5ffc c02827ce 7fffcde8 Jul 28 12:46:31 linprox kernel: User ACRS: Jul 28 12:46:31 linprox squid[845]: Squid Parent: child process 998 exited due t o signal 6 Jul 28 12:46:31 linprox kernel: 40177f60 00000000 00000000 00000000 Jul 28 12:46:31 linprox kernel: 00000000 00000000 00000000 00000000 Jul 28 12:46:31 linprox last message repeated 2 times Jul 28 12:46:31 linprox kernel: User Code: Jul 28 12:46:31 linprox kernel: bf 31 20 00 a7 84 00 1c a7 2a 00 01 18 32 14 31 a7 74 ff f8 Jul 28 12:46:34 linprox squid[845]: Squid Parent: child process 1240 started Jul 28 12:47:31 linprox kernel: User process fault: interruption code 0x10 Jul 28 12:47:31 linprox kernel: failing address: 1010000 Jul 28 12:47:31 linprox kernel: CPU: 0 Jul 28 12:47:31 linprox kernel: Process squid (pid: 1240, stackpage=04447000) Jul 28 12:47:31 linprox kernel: Jul 28 12:47:31 linprox kernel: User PSW: 070dd000 c02b601e Tainted: PF Jul 28 12:47:31 linprox kernel: task: 04446000 ksp: 04447cf8 pt_regs: 04447f68 Jul 28 12:47:31 linprox kernel: User GPRS: Jul 28 12:47:31 linprox kernel: 0094f640 00000003 01010101 000dc6e8 Jul 28 12:47:31 linprox kernel: 01010101 4035cb50 00000000 7fffd4d8 Jul 28 12:47:31 linprox kernel: 01010101 00000000 00000000 7fffcde8 Jul 28 12:47:31 linprox kernel: c03601ec c02b5ffc c02827ce 7fffcde8 Jul 28 12:47:31 linprox kernel: User ACRS: Jul 28 12:47:31 linprox squid[845]: Squid Parent: child process 1240 exited due to signal 6 Jul 28 12:47:31 linprox kernel: 40177f60 00000000 00000000 00000000 Jul 28 12:47:31 linprox kernel: 00000000 00000000 00000000 00000000 Jul 28 12:47:31 linprox last message repeated 2 times Jul 28 12:47:31 linprox kernel: User Code: Jul 28 12:47:31 linprox kernel: bf 31 20 00 a7 84 00 1c a7 2a 00 01 18 32 14 31 a7 74 ff f8 Jul 28 12:47:34 linprox squid[845]: Squid Parent: child process 1443 started Jul 28 12:50:31 linprox kernel: User process fault: interruption code 0x10 Jul 28 12:50:31 linprox kernel: failing address: 1010000 Jul 28 12:50:31 linprox kernel: CPU: 0 Jul 28 12:50:31 linprox kernel: Process squid (pid: 1443, stackpage=03E47000) Jul 28 12:50:31 linprox kernel: Jul 28 12:50:31 linprox kernel: User PSW: 070dd000 c02b601e Tainted: PF Jul 28 12:50:31 linprox kernel: task: 03e46000 ksp: 03e47cf8 pt_regs: 03e47f68 Jul 28 12:50:31 linprox kernel: User GPRS: Jul 28 12:50:31 linprox kernel: 00963678 00000003 01010101 000dc6e8 Jul 28 12:50:31 linprox kernel: 01010101 4035cb50 00000000 7fffd4d8 Jul 28 12:50:31 linprox kernel: 01010101 00000000 00000000 7fffcde8 Jul 28 12:50:31 linprox kernel: c03601ec c02b5ffc c02827ce 7fffcde8 Jul 28 12:50:31 linprox kernel: User ACRS: Jul 28 12:50:31 linprox squid[845]: Squid Parent: child process 1443 exited due to signal 6 Jul 28 12:50:31 linprox kernel: 40177f60 00000000 00000000 00000000 Jul 28 12:50:31 linprox kernel: 00000000 00000000 00000000 00000000 Jul 28 12:50:31 linprox last message repeated 2 times Jul 28 12:50:31 linprox kernel: User Code: Jul 28 12:50:31 linprox kernel: bf 31 20 00 a7 84 00 1c a7 2a 00 01 18 32 14 31 a7 74 ff f8 Also, is the core written with uid/gid of user (squid?) or root? I assume squid. I don't have a core now because the /var/log/squid/core/ was owned root:root, now it's squid:squid so if it happens again... ~ Daniel ----------------------------------------------------------------------- This message is the property of Time Inc. or its affiliates. It may be legally privileged and/or confidential and is intended only for the use of the addressee(s). No addressee should forward, print, copy, or otherwise reproduce this message in any manner that would allow it to be viewed by any individual not originally listed as a recipient. If the reader of this message is not the intended recipient, you are hereby notified that any unauthorized disclosure, dissemination, distribution, copying or the taking of any action in reliance on the information herein is strictly prohibited. If you have received this communication in error, please immediately notify the sender and delete this message. Thank you.