Bug 747125

Summary: squid crashing with segfault when accessing a host in my LAN
Product: [Fedora] Fedora Reporter: Michael Weidner <micha>
Component: squidAssignee: Jiri Skala <jskala>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: unspecified    
Version: 16CC: aglotov, henrik, jonathansteffan, jskala
Target Milestone: ---   
Target Release: ---   
Hardware: i686   
OS: Linux   
Whiteboard:
Fixed In Version: squid-3.2.0.13-4.fc16 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-11-14 22:24:19 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:

Description Michael Weidner 2011-10-18 21:04:33 UTC 
Description of problem:

After update to squid-3.2.0.13-1.fc16.i686, squid crashes when accessing a host on my LAN (i.e. my dd-wrt router WebIF with ip 192.168.0.250)

Accessing hosts not in my LAN (i.e. google.com), squid does not crash.

Downgrade to squid-3.2.0.12-1.fc16.i686.rpm solves the problem.

Here is the backtrace:

# gdb /usr/sbin/squid
GNU gdb (GDB) Fedora (7.3.50.20110722-9.fc16)
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /usr/sbin/squid...Reading symbols from /usr/lib/debug/usr/sbin/squid.debug...done.
done.
(gdb) run -DNYCd3
Starting program: /usr/sbin/squid -DNYCd3
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/libthread_db.so.1".
2011/10/18 22:51:48| WARNING: -D command-line option is obsolete.
2011/10/18 22:51:48| Starting Squid Cache version 3.2.0.13 for i386-redhat-linux-gnu...
2011/10/18 22:51:48| Process ID 13177
2011/10/18 22:51:48| Process Roles: master worker
2011/10/18 22:51:48| With 1024 file descriptors available
2011/10/18 22:51:48| Initializing IP Cache...
2011/10/18 22:51:48| DNS Socket created at [::], FD 9
2011/10/18 22:51:48| DNS Socket created at 0.0.0.0, FD 10
2011/10/18 22:51:48| Adding domain at.home from /etc/resolv.conf
2011/10/18 22:51:48| Adding domain at.home from /etc/resolv.conf
2011/10/18 22:51:48| Adding nameserver 127.0.0.1 from /etc/resolv.conf
2011/10/18 22:51:48| Logfile: opening log daemon:/var/log/squid/access.log
2011/10/18 22:51:48| Logfile Daemon: opening log /var/log/squid/access.log
Detaching after fork from child process 13180.
Detaching after fork from child process 13181.
2011/10/18 22:51:48| Unlinkd pipe opened on FD 16
2011/10/18 22:51:48| Local cache digest enabled; rebuild/rewrite every 3600/3600 sec
2011/10/18 22:51:48| Store logging disabled
2011/10/18 22:51:48| Swap maxSize 563200 + 262144 KB, estimated 63488 objects
2011/10/18 22:51:48| Target number of buckets: 3174
2011/10/18 22:51:48| Using 8192 Store buckets
2011/10/18 22:51:48| Max Mem  size: 262144 KB
2011/10/18 22:51:48| Max Swap size: 563200 KB
2011/10/18 22:51:48| Version 1 of swap file with LFS support detected... 
2011/10/18 22:51:48| Rebuilding storage in /var/spool/squid (DIRTY)
2011/10/18 22:51:48| Using Least Load store dir selection
2011/10/18 22:51:48| Set Current Directory to /var/spool/squid
2011/10/18 22:51:48| Loaded Icons.
2011/10/18 22:51:48| HTCP Disabled.
2011/10/18 22:51:48| Squid plugin modules loaded: 0
2011/10/18 22:51:48| Adaptation support is off.
2011/10/18 22:51:48| Ready to serve requests.
2011/10/18 22:51:48| Accepting HTTP Socket connections at local=[::]:3128 remote=[::] FD 19 flags=9
2011/10/18 22:51:48| Store rebuilding is 49.78% complete
2011/10/18 22:51:48| Done reading /var/spool/squid swaplog (8227 entries)
2011/10/18 22:51:48| Finished rebuilding storage from disk.
2011/10/18 22:51:48|      8227 Entries scanned
2011/10/18 22:51:48|         0 Invalid entries.
2011/10/18 22:51:48|         0 With invalid flags.
2011/10/18 22:51:48|      8227 Objects loaded.
2011/10/18 22:51:48|         0 Objects expired.
2011/10/18 22:51:48|         0 Objects cancelled.
2011/10/18 22:51:48|         0 Duplicate URLs purged.
2011/10/18 22:51:48|         0 Swapfile clashes avoided.
2011/10/18 22:51:48|   Took 0.10 seconds (85919.88 objects/sec).
2011/10/18 22:51:48| Beginning Validation Procedure
2011/10/18 22:51:48|   Completed Validation Procedure
2011/10/18 22:51:48|   Validated 8225 Entries
2011/10/18 22:51:48|   store_swap_size = 370760.00 KB
2011/10/18 22:51:49| storeLateRelease: released 0 objects

Program received signal SIGSEGV, Segmentation fault.
HttpStateData::cacheableReply (this=0x757b10) at http.cc:385
385             if (!request->cache_control->Public()) {
(gdb) backtrace
#0  HttpStateData::cacheableReply (this=0x757b10) at http.cc:385
#1  0x0028de77 in HttpStateData::haveParsedReplyHeaders (this=0x757b10) at http.cc:899
#2  0x0030a70c in ServerStateData::setFinalReply (this=0x757b10, rep=0x758b40) at Server.cc:168
#3  0x0030cb92 in ServerStateData::adaptOrFinalizeReply (this=0x757b10) at Server.cc:890
#4  0x00296ad8 in HttpStateData::processReply (this=0x757b10) at http.cc:1190
#5  0x00296d03 in HttpStateData::readReply (this=0x757b10, io=...) at http.cc:1167
#6  0x002990a3 in CommCbMemFunT<HttpStateData, CommIoCbParams>::doDial (this=0x75797c) at ../src/CommCalls.h:177
#7  0x002991cc in JobDialer<HttpStateData>::dial (this=0x75797c, call=...) at base/AsyncJobCalls.h:175
#8  0x002993a3 in AsyncCallT<CommCbMemFunT<HttpStateData, CommIoCbParams> >::fire (this=0x757960) at ../src/base/AsyncCall.h:142
#9  0x0037cbb3 in AsyncCall::make (this=0x757960) at AsyncCall.cc:36
#10 0x00380186 in AsyncCallQueue::fireNext (this=0x6ecfd0) at AsyncCallQueue.cc:54
#11 0x00380310 in AsyncCallQueue::fire (this=0x6ecfd0) at AsyncCallQueue.cc:40
#12 0x00254fdd in EventLoop::dispatchCalls (this=0xbffff6fc) at EventLoop.cc:154
#13 0x002551d7 in EventLoop::runOnce (this=0xbffff6fc) at EventLoop.cc:131
#14 0x002552b0 in EventLoop::run (this=0xbffff6fc) at EventLoop.cc:95
#15 0x002bb8a9 in SquidMain (argc=2, argv=0xbffff834) at main.cc:1528
#16 0x001e0e89 in SquidMainSafe (argv=0xbffff834, argc=2) at main.cc:1247
#17 main (argc=2, argv=0xbffff834) at main.cc:1239
(gdb) quit

My squid.conf:

# cat /etc/squid/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 10.0.0.0/8     # RFC1918 possible internal network
acl localnet src 172.16.0.0/12  # RFC1918 possible internal network
acl localnet src 192.168.0.0/16 # 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 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
acl CONNECT method CONNECT

#
# Recommended minimum Access Permission configuration:
#
# Only allow cachemgr access from localhost
http_access allow localhost manager
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
#

# 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

# Uncomment and adjust the following to add a disk cache directory.
cache_dir ufs /var/spool/squid 550 16 256

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

My network-config:

# route -n
Kernel IP Routentabelle
Ziel            Router          Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.1.1     0.0.0.0         UG    0      0        0 eth0
172.25.1.0      0.0.0.0         255.255.255.0   U     0      0        0 eth0
192.168.0.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
239.0.0.0       0.0.0.0         255.0.0.0       U     0      0        0 eth0
# ifconfig 
eth0      Link encap:Ethernet  Hardware Adresse 00:1E:90:A9:56:FA  
          inet Adresse:192.168.0.254  Bcast:192.168.0.255  Maske:255.255.255.0
          inet6 Adresse: fe80::21e:90ff:fea9:56fa/64 Gültigkeitsbereich:Verbindung
          UP BROADCAST RUNNING ALLMULTI MULTICAST  MTU:1500  Metric:1
          RX packets:716462 errors:0 dropped:0 overruns:0 frame:0
          TX packets:571308 errors:0 dropped:0 overruns:0 carrier:3
          Kollisionen:0 Sendewarteschlangenlänge:1000 
          RX bytes:570291615 (543.8 MiB)  TX bytes:375184831 (357.8 MiB)

eth0:0    Link encap:Ethernet  Hardware Adresse 00:1E:90:A9:56:FA  
          inet Adresse:192.168.1.254  Bcast:192.168.1.255  Maske:255.255.255.0
          UP BROADCAST RUNNING ALLMULTI MULTICAST  MTU:1500  Metric:1

eth0:1    Link encap:Ethernet  Hardware Adresse 00:1E:90:A9:56:FA  
          inet Adresse:172.25.1.1  Bcast:172.25.1.255  Maske:255.255.255.0
          UP BROADCAST RUNNING ALLMULTI MULTICAST  MTU:1500  Metric:1

eth1      Link encap:Ethernet  Hardware Adresse 00:05:5D:A3:4A:1A  
          inet6 Adresse: fe80::205:5dff:fea3:4a1a/64 Gültigkeitsbereich:Verbindung
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
          Kollisionen:0 Sendewarteschlangenlänge:1000 
          RX bytes:0 (0.0 b)  TX bytes:468 (468.0 b)
          Interrupt:20 Basisadresse:0x8c00 

lo        Link encap:Lokale Schleife  
          inet Adresse:127.0.0.1  Maske:255.0.0.0
          inet6 Adresse: ::1/128 Gültigkeitsbereich:Maschine
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:9107 errors:0 dropped:0 overruns:0 frame:0
          TX packets:9107 errors:0 dropped:0 overruns:0 carrier:0
          Kollisionen:0 Sendewarteschlangenlänge:0 
          RX bytes:3027125 (2.8 MiB)  TX bytes:3027125 (2.8 MiB)

Version-Release number of selected component (if applicable):

squid-3.2.0.13-1.fc16.i686

How reproducible:

Always

Steps to Reproduce:
1. Access any host in my LAN with squid
  
Actual results:

squid crashes, see above

Expected results:

no crash
Comment 1 Michael Weidner 2011-10-26 09:11:12 UTC 
There seems to be an correction for this bug in the latest trunk of squid, see

http://bazaar.launchpad.net/~squid/squid/3.2/revision/11383
Comment 2 Jiri Skala 2011-10-26 09:29:46 UTC 
This is already among squid-3.2 changes

http://www.squid-cache.org/Versions/v3/3.2/changesets/squid-3.2-11383.patch.

I'm going to commit it.
Comment 3 Fedora Update System 2011-10-26 10:33:46 UTC 
squid-3.2.0.13-3.fc16 has been submitted as an update for Fedora 16.
https://admin.fedoraproject.org/updates/squid-3.2.0.13-3.fc16
Comment 4 Michael Weidner 2011-10-26 10:48:20 UTC 
I can confirm the bug is fixed with squid-3.2.0.13-3.fc16
Comment 5 Fedora Update System 2011-10-26 19:05:06 UTC 
Package squid-3.2.0.13-3.fc16:
* should fix your issue,
* was pushed to the Fedora 16 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing squid-3.2.0.13-3.fc16'
as soon as you are able to.
Please go to the following url:
https://admin.fedoraproject.org/updates/FEDORA-2011-14951
then log in and leave karma (feedback).
Comment 6 Fedora Update System 2011-11-04 21:49:19 UTC 
Package squid-3.2.0.13-4.fc16:
* should fix your issue,
* was pushed to the Fedora 16 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing squid-3.2.0.13-4.fc16'
as soon as you are able to.
Please go to the following url:
https://admin.fedoraproject.org/updates/FEDORA-2011-14951
then log in and leave karma (feedback).
Comment 7 Fedora Update System 2011-11-14 22:24:19 UTC 
squid-3.2.0.13-4.fc16 has been pushed to the Fedora 16 stable repository.  If problems still persist, please make note of it in this bug report.