> How long as this been going on? Apparently it has been going on for a couple of days. I did not notice the "ScanOnAccess: ... (null) FOUND" messages, until I hid the "ScanOnAccess: Performing additional scanning on file ..." messages. The first occurrence was on July 23rd 13:00:08 with clamav-0.99.4-1.el7.x86_64
Jul 23 13:00:08 hostname1 clamd[6539]: ScanOnAccess: /home/user1/.nv/GLCache/ca7c949c26f976e0f53c14399c2ef02e/3a4ed7c703a940c9: (null) FOUND Jul 23 13:00:08 hostname1 clamd[6539]: ScanOnAccess: /home/user1/.nv/GLCache/ca7c949c26f976e0f53c14399c2ef02e: (null) FOUND As you can see, those messages do not only appear for the firefox cache. On Jul 26th we updated clamav to clamav-0.100.1-1.el7.x86_64. But the messages still appear. > What is your database set? Database information -------------------- Database directory: /var/lib/clamav main.cvd: version 58, sigs: 4566249, built on Wed Jun 7 23:38:10 2017 bytecode.cld: version 326, sigs: 93, built on Thu Jul 26 18:44:35 2018 daily.cld: version 24803, sigs: 2034540, built on Wed Aug 1 18:43:39 2018 Total number of signatures: 6600882 > What version of ClamAV are you using? Currently clamav-0.100.1-1.el7.x86_64 > Are you using the VirusEvent hook? No I noticed something else. There were out of memory messages showing for clamd. Aug 02 13:07:17 cis4test clamd[4051]: out of memory [4051] Aug 02 13:17:17 cis4test clamd[4051]: out of memory [4051] Unfortunately they were not associated with clamd but with journal in rsyslog, that's why I did not notice them at first. At that time the machine had 3GB of free memory and more than 25GB of free swap, so I don't understand why those messages were showing up. They also started to show up on Jul 24th 14:38:08 (after the first "ScanOnAccess: ... (null) FOUND" messages showed up). On July 26th the messages stopped after updating clamav to 0.100.1-1, but then showed up again on Aug 1st 18:56:31. I just restarted clamav and the "out of memory" messages are no longer showing up and the "ScanOnAccess: ... (null) FOUND" are not either. Summary: Jul 23 13:00:08 -- first "ScanOnAccess: ... (null) FOUND" message Jul 24 14:38:08 -- first "out of memory" message Jul 26 14:44:03 -- update to clamav-0.100.1-1, "ScanOnAccess: ... (null) FOUND" messages and "out of memory" messages stop Jul 30 09:40:44 -- "ScanOnAccess: ... (null) FOUND" messages reappear Aug 1 18:56:31 -- "out of memory" messages reappear Aug 2 13:38:51 -- restart clamd@scan, "ScanOnAccess: ... (null) FOUND" messages and "out of memory" messages stop I will closely monitor the faulty machine and I will try to reproduce this behavior on a different machine and report back to you with my findings. I attached the output of clamconf. Best regards, Jens
Checking configuration files in /etc Config file: clamd.conf ----------------------- BlockMax disabled PreludeEnable disabled PreludeAnalyzerName disabled LogFile disabled LogFileUnlock disabled LogFileMaxSize = "1048576" LogTime disabled LogClean disabled LogSyslog = "yes" LogFacility = "LOG_LOCAL6" LogVerbose disabled LogRotate disabled ExtendedDetectionInfo disabled PidFile disabled TemporaryDirectory disabled DatabaseDirectory = "/var/lib/clamav" OfficialDatabaseOnly disabled LocalSocket = "/var/run/clamd.scan/clamd.sock" LocalSocketGroup disabled LocalSocketMode disabled FixStaleSocket = "yes" TCPSocket disabled TCPAddr disabled MaxConnectionQueueLength = "200" StreamMaxLength = "26214400" StreamMinPort = "1024" StreamMaxPort = "2048" MaxThreads = "10" ReadTimeout = "120" CommandReadTimeout = "5" SendBufTimeout = "500" MaxQueue = "100" IdleTimeout = "30" ExcludePath disabled MaxDirectoryRecursion = "15" FollowDirectorySymlinks disabled FollowFileSymlinks disabled CrossFilesystems = "yes" SelfCheck = "600" DisableCache disabled VirusEvent disabled ExitOnOOM disabled AllowAllMatchScan = "yes" Foreground disabled Debug disabled LeaveTemporaryFiles disabled User = "root" Bytecode = "yes" BytecodeSecurity = "TrustSigned" BytecodeTimeout = "5000" 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 = "100000" PCRERecMatchLimit = "5000" PCREMaxFileSize = "26214400" ScanOnAccess = "yes" OnAccessMountPath disabled OnAccessIncludePath = "/home/user1", "/home/user2", "/media" OnAccessExcludePath disabled OnAccessExcludeRootUID disabled OnAccessExcludeUID disabled OnAccessMaxFileSize = "5242880" OnAccessDisableDDD disabled OnAccessPrevention disabled OnAccessExtraScanning = "yes" DevACOnly disabled DevACDepth disabled DevPerformance disabled DevLiblog disabled DisableCertCheck disabled Config file: freshclam.conf --------------------------- LogFileMaxSize = "1048576" LogTime disabled LogSyslog = "yes" LogFacility = "LOG_LOCAL6" LogVerbose disabled LogRotate disabled PidFile disabled DatabaseDirectory = "/var/lib/clamav" Foreground disabled Debug disabled UpdateLogFile disabled DatabaseOwner = "clamupdate" Checks = "12" DNSDatabaseInfo = "current.cvd.clamav.net" DatabaseMirror disabled PrivateMirror = "privatemirror1", "privatemirro2" MaxAttempts = "3" ScriptedUpdates disabled TestDatabases = "yes" CompressLocalDatabase disabled ExtraDatabase disabled DatabaseCustomURL disabled HTTPProxyServer disabled HTTPProxyPort disabled HTTPProxyUsername disabled HTTPProxyPassword disabled HTTPUserAgent disabled NotifyClamd = "/etc/clamd.conf" OnUpdateExecute disabled OnErrorExecute disabled OnOutdatedExecute disabled LocalIPAddress disabled ConnectTimeout = "30" ReceiveTimeout = "30" SafeBrowsing disabled Bytecode = "yes" clamav-milter.conf not found Software settings ----------------- Version: 0.100.1 Optional features supported: MEMPOOL IPv6 AUTOIT_EA06 BZIP2 LIBXML2 PCRE2 ICONV JSON Database information -------------------- Database directory: /var/lib/clamav main.cvd: version 58, sigs: 4566249, built on Wed Jun 7 23:38:10 2017 bytecode.cld: version 326, sigs: 93, built on Thu Jul 26 18:44:35 2018 daily.cld: version 24803, sigs: 2034540, built on Wed Aug 1 18:43:39 2018 Total number of signatures: 6600882 Platform information -------------------- uname: Linux 3.10.0-862.9.1.el7.x86_64 #1 SMP Wed Jun 27 04:30:39 EDT 2018 x86_64 OS: linux-gnu, ARCH: x86_64, CPU: x86_64 zlib version: 1.2.7 (1.2.7), compile flags: a9 platform id: 0x0a215c5c0800000002040805 Build information ----------------- GNU C: 4.8.5 20150623 (Red Hat 4.8.5-28) (4.8.5) CPPFLAGS: CFLAGS: -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -m64 -mtune=generic -fno-strict-aliasing -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 CXXFLAGS: -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -m64 -mtune=generic LDFLAGS: -Wl,-z,relro -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -Wl,--as-needed Configure: '--build=x86_64-redhat-linux-gnu' '--host=x86_64-redhat-linux-gnu' '--program-prefix=' '--disable-dependency-tracking' '--prefix=/usr' '--exec-prefix=/usr' '--bindir=/usr/bin' '--sbindir=/usr/sbin' '--sysconfdir=/etc' '--datadir=/usr/share' '--includedir=/usr/include' '--libdir=/usr/lib64' '--libexecdir=/usr/libexec' '--localstatedir=/var' '--sharedstatedir=/var/lib' '--mandir=/usr/share/man' '--infodir=/usr/share/info' '--enable-milter' '--disable-clamav' '--disable-static' '--disable-zlib-vcheck' '--disable-unrar' '--enable-id-check' '--enable-dns' '--with-dbdir=/var/lib/clamav' '--with-group=clamupdate' '--with-libcurl=/usr' '--with-user=clamupdate' '--disable-rpath' '--disable-silent-rules' '--enable-clamdtop' 'build_alias=x86_64-redhat-linux-gnu' 'host_alias=x86_64-redhat-linux-gnu' 'CFLAGS=-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -m64 -mtune=generic' 'LDFLAGS=-Wl,-z,relro -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -Wl,--as-needed' 'PKG_CONFIG_PATH=:/usr/lib64/pkgconfig:/usr/share/pkgconfig' sizeof(void*) = 8 Engine flevel: 92, dconf: 92
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