[Pkg-clamav-devel] Bug#824042: gets into kill/restart loop

Wed May 11 16:12:42 UTC 2016

Package: clamav-daemon
Version: 0.99.1+dfsg-1+b2
Severity: normal

clamav-daemon got into a loop on my server where it was being killed and
restarting multiple times per second. This spiked load to 100.
Basically a weak fork bomb.

I tried systemctl stop clamav but it just started right up again.
In the end, I rebooted, which "fixed" the problem.

Looks like it was being killed each time by the OOM killer. Which makes
sense; clamav uses 18% of the system's 2 gb of ram and so will be the
top target.

I think there should be something to prevent this runaway scenario.
Maybe a delay, or maybe avoid restarting repeatedly.

May  8 13:58:14 kite kernel: [12577316.169029] Out of memory: Kill
process 14646 (clamd) score 115 or sacrifice child
May  8 13:58:14 kite kernel: [12577316.169043] Killed process 14646
(clamd) total-vm:425680kB, anon-rss:264680kB, file-rss:0kB
May  8 13:58:29 kite kernel: [12577330.925647] Out of memory: Kill
process 14662 (clamd) score 115 or sacrifice child
May  8 13:58:29 kite kernel: [12577330.925663] Killed process 14662
(clamd) total-vm:425936kB, anon-rss:264684kB, file-rss:12kB

Sun May  8 07:32:30 2016 -> +++ Started at Sun May  8 07:32:30 2016
Sun May  8 07:32:30 2016 -> Received 1 file descriptor(s) from systemd.
Sun May  8 07:32:30 2016 -> clamd daemon 0.99.1 (OS: linux-gnu, ARCH: x86_64, CPU: x86_64)
Sun May  8 07:32:30 2016 -> Running as user clamav (UID 112, GID 119)
Sun May  8 07:32:30 2016 -> Log file size limited to 4294967295bytes.
Sun May  8 07:32:30 2016 -> Reading databases from /var/lib/clamav
Sun May  8 07:32:30 2016 -> Not loading PUA signatures.
Sun May  8 07:32:30 2016 -> Bytecode: Security mode set to "TrustSigned".
Sun May  8 13:32:30 2016 -> +++ Started at Sun May  8 13:32:30 2016
Sun May  8 13:32:30 2016 -> Received 1 file descriptor(s) from systemd.
Sun May  8 13:32:30 2016 -> clamd daemon 0.99.1 (OS: linux-gnu, ARCH: x86_64, CPU: x86_64)
Sun May  8 13:32:30 2016 -> Running as user clamav (UID 112, GID 119)
Sun May  8 13:32:30 2016 -> Log file size limited to 4294967295bytes.
Sun May  8 13:32:30 2016 -> Reading databases from /var/lib/clamav
Sun May  8 13:32:30 2016 -> Not loading PUA signatures.
Sun May  8 13:32:30 2016 -> Bytecode: Security mode set to "TrustSigned".
Sun May  8 13:32:39 2016 -> +++ Started at Sun May  8 13:32:39 2016
Sun May  8 13:32:39 2016 -> Received 1 file descriptor(s) from systemd.
Sun May  8 13:32:39 2016 -> clamd daemon 0.99.1 (OS: linux-gnu, ARCH: x86_64, CPU: x86_64)
Sun May  8 13:32:39 2016 -> Running as user clamav (UID 112, GID 119)
Sun May  8 13:32:39 2016 -> Log file size limited to 4294967295bytes.
Sun May  8 13:32:39 2016 -> Reading databases from /var/lib/clamav
Sun May  8 13:32:39 2016 -> Not loading PUA signatures.
Sun May  8 13:32:39 2016 -> Bytecode: Security mode set to "TrustSigned".
Sun May  8 13:32:50 2016 -> +++ Started at Sun May  8 13:32:50 2016
Sun May  8 13:32:50 2016 -> Received 1 file descriptor(s) from systemd.
Sun May  8 13:32:50 2016 -> clamd daemon 0.99.1 (OS: linux-gnu, ARCH: x86_64, CPU: x86_64)
Sun May  8 13:32:50 2016 -> Running as user clamav (UID 112, GID 119)
Sun May  8 13:32:50 2016 -> Log file size limited to 4294967295bytes.
Sun May  8 13:32:50 2016 -> Reading databases from /var/lib/clamav
Sun May  8 13:32:50 2016 -> Not loading PUA signatures.
Sun May  8 13:32:50 2016 -> Bytecode: Security mode set to "TrustSigned".

May 11 09:09:53 kite systemd[1]: clamav-daemon.service: Main process exited, code=killed, status=9/KILL
May 11 09:09:53 kite systemd[1]: clamav-daemon.service: Unit entered failed state.
May 11 09:09:53 kite systemd[1]: clamav-daemon.service: Failed with result 'signal'.
May 11 09:09:53 kite systemd[1]: Started Clam AntiVirus userspace daemon.
May 11 09:10:07 kite systemd[1]: clamav-daemon.service: Main process exited, code=killed, status=9/KILL
May 11 09:10:07 kite systemd[1]: clamav-daemon.service: Unit entered failed state.
May 11 09:10:07 kite systemd[1]: clamav-daemon.service: Failed with result 'signal'.
May 11 09:10:07 kite systemd[1]: Started Clam AntiVirus userspace daemon.
May 11 09:10:30 kite systemd[1]: clamav-daemon.service: Main process exited, code=killed, status=9/KILL
May 11 09:10:30 kite systemd[1]: clamav-daemon.service: Unit entered failed state.
May 11 09:10:30 kite systemd[1]: clamav-daemon.service: Failed with result 'signal'.
May 11 09:10:30 kite systemd[1]: Started Clam AntiVirus userspace daemon.
May 11 09:11:02 kite systemd[1]: clamav-daemon.service: Main process exited, code=killed, status=9/KILL
May 11 09:11:02 kite systemd[1]: clamav-daemon.service: Unit entered failed state.
May 11 09:11:02 kite systemd[1]: clamav-daemon.service: Failed with result 'signal'.
May 11 09:11:02 kite systemd[1]: Started Clam AntiVirus userspace daemon.
May 11 09:11:18 kite systemd[1]: clamav-daemon.service: Main process exited, code=killed, status=9/KILL
May 11 09:11:18 kite systemd[1]: clamav-daemon.service: Unit entered failed state.
May 11 09:11:18 kite systemd[1]: clamav-daemon.service: Failed with result 'signal'.

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

Config file: clamd.conf
-----------------------
LogFile = "/var/log/clamav/clamav.log"
StatsHostID = "auto"
StatsEnabled disabled
StatsPEDisabled = "yes"
StatsTimeout = "10"
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 = "5"
SendBufTimeout = "200"
MaxQueue = "100"
IdleTimeout = "30"
ExcludePath disabled
MaxDirectoryRecursion = "15"
FollowDirectorySymlinks disabled
FollowFileSymlinks disabled
CrossFilesystems = "yes"
SelfCheck = "3600"
DisableCache disabled
VirusEvent disabled
ExitOnOOM disabled
AllowAllMatchScan = "yes"
Foreground disabled
Debug disabled
LeaveTemporaryFiles disabled
User = "clamav"
AllowSupplementaryGroups disabled
Bytecode = "yes"
BytecodeSecurity = "TrustSigned"
BytecodeTimeout = "60000"
BytecodeUnsigned disabled
BytecodeMode = "Auto"
DetectPUA disabled
ExcludePUA disabled
IncludePUA disabled
AlgorithmicDetection = "yes"
ScanPE = "yes"
ScanELF = "yes"
DetectBrokenExecutables disabled
ScanMail = "yes"
ScanPartialMessages disabled
PhishingSignatures = "yes"
PhishingScanURLs = "yes"
PhishingAlwaysBlockCloak disabled
PhishingAlwaysBlockSSLMismatch disabled
PartitionIntersection disabled
HeuristicScanPrecedence disabled
StructuredDataDetection disabled
StructuredMinCreditCardCount = "3"
StructuredMinSSNCount = "3"
StructuredSSNFormatNormal = "yes"
StructuredSSNFormatStripped disabled
ScanHTML = "yes"
ScanOLE2 = "yes"
OLE2BlockMacros disabled
ScanPDF = "yes"
ScanSWF = "yes"
ScanXMLDOCS = "yes"
ScanHWP3 = "yes"
ScanArchive = "yes"
ArchiveBlockEncrypted disabled
ForceToDisk disabled
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"
ScanOnAccess disabled
OnAccessMountPath disabled
OnAccessIncludePath disabled
OnAccessExcludePath disabled
OnAccessExcludeUID disabled
OnAccessMaxFileSize = "5242880"
OnAccessDisableDDD disabled
OnAccessPrevention disabled
OnAccessExtraScanning disabled
DevACOnly disabled
DevACDepth disabled
DevPerformance disabled
DevLiblog disabled
DisableCertCheck disabled

Config file: freshclam.conf
---------------------------
StatsHostID disabled
StatsEnabled disabled
StatsTimeout disabled
LogFileMaxSize = "4294967295"
LogTime = "yes"
LogSyslog disabled
LogFacility = "LOG_LOCAL6"
LogVerbose disabled
LogRotate = "yes"
PidFile disabled
DatabaseDirectory = "/var/lib/clamav"
Foreground disabled
Debug disabled
AllowSupplementaryGroups 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
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"
SubmitDetectionStats disabled
DetectionStatsCountry disabled
DetectionStatsHostID disabled
SafeBrowsing disabled
Bytecode = "yes"

clamav-milter.conf not found

Software settings
-----------------
Version: 0.99.1
Optional features supported: MEMPOOL IPv6 FRESHCLAM_DNS_FIX AUTOIT_EA06 BZIP2 LIBXML2 PCRE ICONV JSON JIT

Database information
--------------------
Database directory: /var/lib/clamav
bytecode.cvd: version 277, sigs: 47, built on Fri Apr 15 14:57:09 2016
main.cvd: version 57, sigs: 4218790, built on Wed Mar 16 19:17:06 2016
daily.cld: version 21526, sigs: 136312, built on Wed May 11 08:56:06 2016
Total number of signatures: 4355149

Platform information
--------------------
uname: Linux 4.5.0-2-amd64 #1 SMP Debian 4.5.3-2 (2016-05-08) x86_64
OS: linux-gnu, ARCH: x86_64, CPU: x86_64
Full OS version: Debian GNU/Linux testing (stretch)
zlib version: 1.2.8 (1.2.8), compile flags: a9
Triple: x86_64-pc-linux-gnu
CPU: core-avx-i, Little-endian
platform id: 0x0a2152520805030101050301

Build information
-----------------
GNU C: 5.3.1 20160409 (5.3.1)
GNU C++: 5.3.1 20160409 (5.3.1)
CPPFLAGS: -Wdate-time -D_FORTIFY_SOURCE=2
CFLAGS: -g -O2 -fPIE -fstack-protector-strong -Wformat -Werror=format-security -Wall -D_FILE_OFFSET_BITS=64 -fno-strict-aliasing  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
CXXFLAGS: -g -O2 -fPIE -fstack-protector-strong -Wformat -Werror=format-security -Wall -D_FILE_OFFSET_BITS=64
LDFLAGS: -fPIE -pie -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-silent-rules' '--libdir=/usr/lib/x86_64-linux-gnu' '--libexecdir=/usr/lib/x86_64-linux-gnu' '--disable-maintainer-mode' '--disable-dependency-tracking' 'CFLAGS=-g -O2 -fPIE -fstack-protector-strong -Wformat -Werror=format-security -Wall -D_FILE_OFFSET_BITS=64' 'CPPFLAGS=-Wdate-time -D_FORTIFY_SOURCE=2' 'CXXFLAGS=-g -O2 -fPIE -fstack-protector-strong -Wformat -Werror=format-security -Wall -D_FILE_OFFSET_BITS=64' 'LDFLAGS=-fPIE -pie -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-gnu-ld' '-with-system-llvm=/usr/bin/llvm-config' '--with-llvm-linking=dynamic' '--with-systemdsystemunitdir=/lib/systemd/system' 'build_alias=x86_64-linux-gnu'
sizeof(void*) = 8
Engine flevel: 82, dconf: 82

--- data dir ---
total 116296
-rw-r--r-- 1 clamav clamav     72045 Apr 28 10:37 bytecode.cvd
-rw-r--r-- 1 clamav clamav   9850880 May 11 11:53 daily.cld
-rw-r--r-- 1 clamav clamav 109143933 Mar 17 01:08 main.cvd
-rw------- 1 clamav clamav      1144 May 11 11:53 mirrors.dat

-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 4.5.0-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages clamav-daemon depends on:
ii  adduser                         3.114
ii  clamav-base                     0.99.1+dfsg-1
ii  clamav-freshclam [clamav-data]  0.99.1+dfsg-1+b2
ii  debconf [debconf-2.0]           1.5.59
ii  dpkg                            1.18.4
ii  init-system-helpers             1.31
ii  libc6                           2.22-7
ii  libclamav7                      0.99.1+dfsg-1+b2
ii  libncurses5                     6.0+20160319-1
ii  libssl1.0.2                     1.0.2h-1
ii  libsystemd0                     229-5
ii  libtinfo5                       6.0+20160319-1
ii  lsb-base                        9.20160110
ii  procps                          2:3.3.11-3
ii  ucf                             3.0036
ii  zlib1g                          1:1.2.8.dfsg-2+b1

Versions of packages clamav-daemon recommends:
ii  clamdscan  0.99.1+dfsg-1+b2

Versions of packages clamav-daemon suggests:
pn  apparmor     <none>
pn  clamav-docs  <none>
pn  daemon       <none>

-- debconf information excluded

-- 
see shy jo