[Pkg-clamav-devel] Bug#1069825: clamav-daemon stops working with LibClamAV Error: cl_engine_addref: engine == NULL

Michael Braun michael-dev at fami-braun.de
Thu Apr 25 12:38:51 BST 2024


Package: clamav
Version: 0.103.10+dfsg-0+deb11u1
Severity: important

Hi,

I'm scanning incoming mails using clamav-daemon and clamav-milter.
From time to time, my mailserver stops working due to clamav-daemon locking up.

The clamav logs read:

   6889 Apr 25 11:28:12 gate clamd[939931]: Thu Apr 25 11:28:11 2024 -> !accept() failed: Too many open files
      1 Apr 25 11:32:11 gate systemd-journald[311]: Suppressed 490085 messages from clamav-daemon.service

(with many repetitions)

      1 Apr 25 11:33:41 gate clamd[939931]: LibClamAV Error: cl_engine_addref: engine == NULL
      1 Apr 25 11:33:41 gate clamd[939931]: Thu Apr 25 11:33:41 2024 -> !cl_engine_addref() failed
      1 Apr 25 11:33:41 gate clamd[939931]: Thu Apr 25 11:33:41 2024 -> !Command dispatch failed

(with many repetitions)

Workaround: systemctl restart clamav-daemon fixes the problem temporarely.


-- Package-specific info:
--- configuration ---
Checking configuration files in /etc/clamav

Config file: clamd.conf
-----------------------
AlertExceedsMax disabled
PreludeEnable disabled
PreludeAnalyzerName = "ClamAV"
LogFile = "/var/log/clamav/clamav.log"
LogFileUnlock disabled
LogFileMaxSize = "4294967295"
LogTime = "yes"
LogClean disabled
LogSyslog disabled
LogFacility = "LOG_LOCAL6"
LogVerbose disabled
LogRotate = "yes"
ExtendedDetectionInfo = "yes"
PidFile disabled
TemporaryDirectory disabled
DatabaseDirectory = "/var/lib/clamav"
OfficialDatabaseOnly disabled
LocalSocket = "/var/run/clamav/clamd.ctl"
LocalSocketGroup = "clamav"
LocalSocketMode = "666"
FixStaleSocket = "yes"
TCPSocket disabled
TCPAddr disabled
MaxConnectionQueueLength = "15"
StreamMaxLength = "26214400"
StreamMinPort = "1024"
StreamMaxPort = "2048"
MaxThreads = "12"
ReadTimeout = "180"
CommandReadTimeout = "30"
SendBufTimeout = "200"
MaxQueue = "100"
IdleTimeout = "30"
ExcludePath disabled
MaxDirectoryRecursion = "15"
FollowDirectorySymlinks disabled
FollowFileSymlinks disabled
CrossFilesystems = "yes"
SelfCheck = "3600"
ConcurrentDatabaseReload disabled
DisableCache disabled
VirusEvent disabled
ExitOnOOM disabled
AllowAllMatchScan = "yes"
Foreground disabled
Debug disabled
LeaveTemporaryFiles disabled
User = "clamav"
Bytecode = "yes"
BytecodeSecurity = "TrustSigned"
BytecodeTimeout = "60000"
BytecodeUnsigned disabled
BytecodeMode = "Auto"
DetectPUA disabled
ExcludePUA disabled
IncludePUA disabled
ScanPE = "yes"
ScanELF = "yes"
ScanMail = "yes"
ScanPartialMessages disabled
PhishingSignatures = "yes"
PhishingScanURLs = "yes"
HeuristicAlerts = "yes"
HeuristicScanPrecedence disabled
StructuredDataDetection disabled
StructuredMinCreditCardCount = "3"
StructuredMinSSNCount = "3"
StructuredSSNFormatNormal = "yes"
StructuredSSNFormatStripped disabled
ScanHTML = "yes"
ScanOLE2 = "yes"
AlertBrokenExecutables disabled
AlertBrokenMedia disabled
AlertEncrypted disabled
StructuredCCOnly disabled
AlertEncryptedArchive disabled
AlertEncryptedDoc disabled
AlertOLE2Macros disabled
AlertPhishingSSLMismatch disabled
AlertPhishingCloak disabled
AlertPartitionIntersection disabled
ScanPDF = "yes"
ScanSWF = "yes"
ScanXMLDOCS = "yes"
ScanHWP3 = "yes"
ScanArchive = "yes"
ForceToDisk disabled
MaxScanTime = "120000"
MaxScanSize = "104857600"
MaxFileSize = "26214400"
MaxRecursion = "16"
MaxFiles = "10000"
MaxEmbeddedPE = "10485760"
MaxHTMLNormalize = "10485760"
MaxHTMLNoTags = "2097152"
MaxScriptNormalize = "5242880"
MaxZipTypeRcg = "1048576"
MaxPartitions = "50"
MaxIconsPE = "100"
MaxRecHWP3 = "16"
PCREMatchLimit = "10000"
PCRERecMatchLimit = "5000"
PCREMaxFileSize = "26214400"
OnAccessMountPath disabled
OnAccessIncludePath disabled
OnAccessExcludePath disabled
OnAccessExcludeRootUID disabled
OnAccessExcludeUID disabled
OnAccessExcludeUname disabled
OnAccessMaxFileSize = "5242880"
OnAccessDisableDDD disabled
OnAccessPrevention disabled
OnAccessExtraScanning disabled
OnAccessCurlTimeout = "5000"
OnAccessMaxThreads = "5"
OnAccessRetryAttempts disabled
OnAccessDenyOnError disabled
DevACOnly disabled
DevACDepth disabled
DevPerformance disabled
DevLiblog disabled
DisableCertCheck disabled
AlgorithmicDetection = "yes"
BlockMax disabled
PhishingAlwaysBlockSSLMismatch disabled
PhishingAlwaysBlockCloak disabled
PartitionIntersection disabled
OLE2BlockMacros disabled
ArchiveBlockEncrypted disabled

Config file: freshclam.conf
---------------------------
LogFileMaxSize = "4294967295"
LogTime = "yes"
LogSyslog disabled
LogFacility = "LOG_LOCAL6"
LogVerbose disabled
LogRotate = "yes"
PidFile disabled
DatabaseDirectory = "/var/lib/clamav"
Foreground disabled
Debug disabled
UpdateLogFile = "/var/log/clamav/freshclam.log"
DatabaseOwner = "clamav"
Checks = "24"
DNSDatabaseInfo = "current.cvd.clamav.net"
DatabaseMirror = "db.local.clamav.net", "database.clamav.net"
PrivateMirror disabled
MaxAttempts = "5"
ScriptedUpdates = "yes"
TestDatabases = "yes"
CompressLocalDatabase disabled
ExtraDatabase disabled
ExcludeDatabase disabled
DatabaseCustomURL disabled
HTTPProxyServer disabled
HTTPProxyPort disabled
HTTPProxyUsername disabled
HTTPProxyPassword disabled
HTTPUserAgent disabled
NotifyClamd = "/etc/clamav/clamd.conf"
OnUpdateExecute disabled
OnErrorExecute disabled
OnOutdatedExecute disabled
LocalIPAddress disabled
ConnectTimeout = "30"
ReceiveTimeout = "30"
Bytecode = "yes"

Config file: clamav-milter.conf
-------------------------------
LogFile = "/var/log/clamav/clamav-milter.log"
LogFileUnlock disabled
LogFileMaxSize = "1048576"
LogTime = "yes"
LogSyslog disabled
LogFacility = "LOG_LOCAL6"
LogVerbose disabled
LogRotate = "yes"
PidFile = "/var/spool/postfix/var/run/clamav/clamav-milter.pid"
TemporaryDirectory = "/tmp"
FixStaleSocket = "yes"
MaxThreads = "10"
ReadTimeout = "120"
Foreground disabled
User = "clamav"
MaxFileSize = "26214400"
ClamdSocket = "unix:/var/run/clamav/clamd.ctl"
MilterSocket = "/var/spool/postfix/var/run/clamav/milter.ctl"
MilterSocketGroup = "clamav"
MilterSocketMode = "666"
LocalNet disabled
OnClean = "Accept"
OnInfected = "Quarantine"
OnFail = "Defer"
RejectMsg disabled
AddHeader = "Replace"
ReportHostname disabled
VirusAction disabled
Chroot disabled
Whitelist disabled
SkipAuthenticated disabled
LogInfected = "Off"
LogClean = "Off"
SupportMultipleRecipients disabled

Software settings
-----------------
Version: 0.103.10
Optional features supported: MEMPOOL IPv6 FRESHCLAM_DNS_FIX AUTOIT_EA06 BZIP2 LIBXML2 PCRE2 ICONV JSON 

Database information
--------------------
Database directory: /var/lib/clamav
daily.cld: version 27256, sigs: 2060084, built on Thu Apr 25 10:27:19 2024
bytecode.cld: version 335, sigs: 86, built on Tue Feb 27 16:37:24 2024
main.cld: version 62, sigs: 6647427, built on Thu Sep 16 14:32:42 2021
Total number of signatures: 8707597

Platform information
--------------------
uname: Linux 5.10.0-27-amd64 #1 SMP Debian 5.10.205-2 (2023-12-31) x86_64
OS: linux-gnu, ARCH: x86_64, CPU: x86_64
Full OS version: Debian GNU/Linux 11 (bullseye)
zlib version: 1.2.11 (1.2.11), compile flags: a9
platform id: 0x0a21818108000000000a0201

Build information
-----------------
GNU C: 10.2.1 20210110 (10.2.1)
CPPFLAGS: -Wdate-time -D_FORTIFY_SOURCE=2
CFLAGS: -g -O2 -ffile-prefix-map=/build/reproducible-path/clamav-0.103.10+dfsg=. -fstack-protector-strong -Wformat -Werror=format-security -Wall -D_FILE_OFFSET_BITS=64  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
CXXFLAGS: -g -O2 -ffile-prefix-map=/build/reproducible-path/clamav-0.103.10+dfsg=. -fstack-protector-strong -Wformat -Werror=format-security -Wall -D_FILE_OFFSET_BITS=64
LDFLAGS: -Wl,-z,relro -Wl,-z,now -Wl,--as-needed
Configure: '--build=x86_64-linux-gnu' '--prefix=/usr' '--includedir=/usr/include' '--mandir=/usr/share/man' '--infodir=/usr/share/info' '--sysconfdir=/etc' '--localstatedir=/var' '--disable-option-checking' '--disable-silent-rules' '--libdir=/usr/lib/x86_64-linux-gnu' '--runstatedir=/run' '--disable-maintainer-mode' '--disable-dependency-tracking' 'CFLAGS=-g -O2 -ffile-prefix-map=/build/reproducible-path/clamav-0.103.10+dfsg=. -fstack-protector-strong -Wformat -Werror=format-security -Wall -D_FILE_OFFSET_BITS=64' 'CPPFLAGS=-Wdate-time -D_FORTIFY_SOURCE=2' 'CXXFLAGS=-g -O2 -ffile-prefix-map=/build/reproducible-path/clamav-0.103.10+dfsg=. -fstack-protector-strong -Wformat -Werror=format-security -Wall -D_FILE_OFFSET_BITS=64' 'LDFLAGS=-Wl,-z,relro -Wl,-z,now -Wl,--as-needed' '--with-dbdir=/var/lib/clamav' '--sysconfdir=/etc/clamav' '--disable-clamav' '--disable-unrar' '--enable-milter' '--enable-dns-fix' '--with-libjson' '--with-system-libmspack' '--with-libcurl=/usr' '--with-gnu-ld' '--with-systemdsystemunitdir=/lib/systemd/system' 'build_alias=x86_64-linux-gnu' 'OBJCFLAGS=-g -O2 -ffile-prefix-map=/build/reproducible-path/clamav-0.103.10+dfsg=. -fstack-protector-strong -Wformat -Werror=format-security'
sizeof(void*) = 8
Engine flevel: 129, dconf: 129

--- data dir ---
total 651604
-rw-r--r-- 1 clamav clamav   1411072 Feb 27 17:03 bytecode.cld
-rw-r--r-- 1 clamav clamav 201756160 Apr 25 11:17 daily.cld
-rw-r--r-- 1 clamav clamav        69 Sep 19  2021 freshclam.dat
-rw-r--r-- 1 clamav clamav 464053248 Sep 16  2021 main.cld
-rw------- 1 clamav clamav        69 Sep  5  2021 mirrors.dat

-- System Information:
Debian Release: 11.9
  APT prefers oldstable-updates
  APT policy: (500, 'oldstable-updates'), (500, 'oldstable-security'), (500, 'oldstable')
Architecture: amd64 (x86_64)

Kernel: Linux 5.10.0-27-amd64 (SMP w/2 CPU threads)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to de_DE.UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages clamav depends on:
ii  clamav-freshclam [clamav-data]  0.103.10+dfsg-0+deb11u1
ii  libc6                           2.31-13+deb11u9
ii  libclamav9                      0.103.10+dfsg-0+deb11u1
ii  libcurl4                        7.74.0-1.3+deb11u11
ii  libjson-c5                      0.15-2+deb11u1
ii  libssl1.1                       1.1.1w-0+deb11u1
ii  zlib1g                          1:1.2.11.dfsg-2+deb11u2

Versions of packages clamav recommends:
ii  clamav-base  0.103.10+dfsg-0+deb11u1

Versions of packages clamav suggests:
ii  clamav-docs   0.103.10+dfsg-0+deb11u1
pn  libclamunrar  <none>

-- no debconf information



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