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Bug 303319 - net-proxy/dansguardian - proxy klogd: dansguardian[17369]: segfault at 410 ip 106fb14e sp 5c2748e0 error 4 in dansguardian[106f0000+a7000]
Summary: net-proxy/dansguardian - proxy klogd: dansguardian[17369]: segfault at 410 ip...
Status: RESOLVED NEEDINFO
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: Current packages (show other bugs)
Hardware: x86 Linux
: Normal normal (vote)
Assignee: Gentoo Network Proxy Developers (OBSOLETE)
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2010-02-03 08:55 UTC by Vasilij K. Savin
Modified: 2013-08-19 12:03 UTC (History)
2 users (show)

See Also:
Package list:
Runtime testing required: ---


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Description Vasilij K. Savin 2010-02-03 08:55:20 UTC
dansguardian segfault for both stable (net-proxy/dansguardian-2.10.0.3) and unstable (net-proxy/dansguardian-2.10.1.1) versions

Proxy works very slow and do not open some sites (https).
The service restart helps for a short time.

Message in /var/log/message:
proxy klogd: dansguardian[17369]: segfault at 410 ip 106fb14e sp 5c2748e0 error 4 in dansguardian[106f0000+a7000]

Some log fragments ("segfault at 410" and "error 4") are permanent.



Reproducible: Always

Steps to Reproduce:
Always in short time after the service restart:

Actual Results:  
Feb  3 09:49:11 proxy dansguardian[17186]: Started sucessfully.                                                             
Feb  3 09:51:00 proxy klogd: dansguardian[17326]: segfault at 410 ip 106fb14e sp 5c2748e0 error 4 in dansguardian[106f0000+a7000]                                                                                                                       
Feb  3 09:58:11 proxy klogd: dansguardian[17269]: segfault at 410 ip 106fb14e sp 5c2748e0 error 4 in dansguardian[106f0000+a7000]                                                                                                                       
Feb  3 10:10:58 proxy klogd: dansguardian[17302]: segfault at 410 ip 106fb14e sp 5c2748e0 error 4 in dansguardian[106f0000+a7000]                                                                                                                       
Feb  3 10:11:50 proxy klogd: dansguardian[17268]: segfault at 410 ip 106fb14e sp 5c2748e0 error 4 in dansguardian[106f0000+a7000]                                                                                                                       
Feb  3 10:12:40 proxy klogd: dansguardian[17328]: segfault at 410 ip 106fb14e sp 5c2748e0 error 4 in dansguardian[106f0000+a7000]                                                                                                                       
Feb  3 10:14:23 proxy klogd: dansguardian[17214]: segfault at 410 ip 106fb14e sp 5c2748e0 error 4 in dansguardian[106f0000+a7000]
Feb  3 10:14:23 proxy klogd: dansguardian[17361]: segfault at 410 ip 106fb14e sp 5c2748e0 error 4 in dansguardian[106f0000+a7000]
Feb  3 10:14:32 proxy klogd: dansguardian[17261]: segfault at 410 ip 106fb14e sp 5c2748e0 error 4 in dansguardian[106f0000+a7000]



I guess that it could be due to recent glibc upgrade (Google found the same problem in Debian after their upgrade).

The effect is in production environment only (heavy load: about 200 dansguardian's processes, 400 users). I did not see any problems with the server when 1-2 user(s) works.

emerge -pv dansguardian:
net-proxy/dansguardian-2.10.1.1  USE="clamav ntlm pcre -debug -kaspersky"

emerge --info:
Portage 2.1.7.16 (hardened/linux/x86, gcc-4.3.4, glibc-2.10.1-r1, 2.6.29-hardenedPe4SMP2srv-vm i686)
=================================================================                                   
System uname: Linux-2.6.29-hardenedPe4SMP2srv-vm-i686-Intel-R-_Xeon-R-_CPU_E5430_@_2.66GHz-with-gentoo-1.12.13
Timestamp of tree: Wed, 03 Feb 2010 06:00:01 +0000                                                            
app-shells/bash:     4.0_p35                                                                                  
dev-lang/python:     2.6.4                                                                                    
sys-apps/baselayout: 1.12.13                                                                                  
sys-apps/sandbox:    1.6-r2                                                                                   
sys-devel/autoconf:  2.63-r1                                                                                  
sys-devel/automake:  1.10.2                                                                                   
sys-devel/binutils:  2.18-r3                                                                                  
sys-devel/gcc:       4.3.4                                                                                    
sys-devel/gcc-config: 1.4.1                                                                                   
sys-devel/libtool:   2.2.6b                                                                                   
virtual/os-headers:  2.6.27-r2                                                                                
ACCEPT_KEYWORDS="x86"                                                                                         
ACCEPT_LICENSE="* -@EULA"                                                                                     
CBUILD="i686-pc-linux-gnu"                                                                                    
CFLAGS="-O2 -march=i686 -pipe"                                                                                
CHOST="i686-pc-linux-gnu"                                                                                     
CONFIG_PROTECT="/etc /var/bind"                                                                               
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/gconf /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/udev/rules.d"                                                                                                                
CXXFLAGS="-O2 -march=i686 -pipe"                                                                                            
DISTDIR="/usr/portage/distfiles"                                                                                            
FEATURES="assume-digests ccache distlocks fixpackages news parallel-fetch protect-owned sandbox sfperms strict unmerge-logs unmerge-orphans userfetch userpriv usersandbox"                                                                             
GENTOO_MIRRORS="http://trumpetti.atm.tut.fi/gentoo http://gentoo.osuosl.org http://www.ibiblio.org/pub/Linux/distributions/gentoo"                                                                                                                      
LDFLAGS="-Wl,-O1"                                                                                                           
LINGUAS="en"
MAKEOPTS="-j1"
PKGDIR="/usr/portage/packages"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/local/portage"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="7zip acl berkdb chroot cracklib crypt cxx gpm hardened idn kerberos ldap lzw lzw-tiff mmx modules mudflap ncurses nptl nptlonly openmp pam pcre perl pic python readline samba session snmp sse sse2 ssl sysfs tcpd urandom userlocales x86 xinetd zlib" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" ELIBC="glibc" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LINGUAS="en" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="vesa vmware"
Unset:  CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, LANG, LC_ALL, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
Comment 1 Tomáš Mózes 2013-03-30 17:27:31 UTC
I had similar problems, it was caused by GRKERNSEC_BRUTE that prevented dansguardian to spawn for limited amount of time.
Comment 2 Tom Wijsman (TomWij) (RETIRED) gentoo-dev 2013-04-01 15:09:38 UTC
Can you obtain a backtrace to confirm this?

http://www.gentoo.org/proj/en/qa/backtraces.xml
Comment 3 Tom Wijsman (TomWij) (RETIRED) gentoo-dev 2013-08-19 12:03:15 UTC
(In reply to Tom Wijsman (TomWij) from comment #2)
> Can you obtain a backtrace to confirm this?
> 
> http://www.gentoo.org/proj/en/qa/backtraces.xml