Bug 510092 – app-antivirus/clamav - clamdscan -m --fdpass --no-summary eat all CPU on clamd stop/crash

• Product: Gentoo Linux
• Status: RESOLVED OBSOLETE

[Description tomas charvat 2014-05-11 19:21:15 UTC]

since version 0.98.3 clamdscan hang if clamd has stopped/crashed during job.
clamdscan then consume all CPU on assigned core, if you have scanned 50 files, load easily raise above 50.

solution is to `killall clamdscan`, zombies die and load will drop

This behaviour was introduced in 0.98.3, thus its worth to consider revert back to 0.98.1

I have reported bug to Clamav.net, waiting for response.

Portage 2.2.8-r1 (hardened/linux/amd64/no-multilib, gcc-4.7.3, glibc-2.17, 3.13.10-hardened x86_64)
=================================================================
System uname: Linux-3.13.10-hardened-x86_64-AMD_Opteron-tm-_Processor_6376-with-gentoo-2.2
KiB Mem:   132279472 total, 120239352 free
KiB Swap:   16777148 total,  16777148 free
Timestamp of tree: Sun, 11 May 2014 10:00:01 +0000
ld GNU ld (GNU Binutils) 2.23.2
app-shells/bash:          4.2_p45
dev-java/java-config:     2.2.0
dev-lang/python:          2.7.5-r3, 3.3.3
dev-util/cmake:           2.8.11.2
dev-util/pkgconfig:       0.28
sys-apps/baselayout:      2.2
sys-apps/openrc:          0.12.4
sys-apps/sandbox:         2.6-r1
sys-devel/autoconf:       2.69
sys-devel/automake:       1.13.4
sys-devel/binutils:       2.23.2
sys-devel/gcc:            4.7.3-r1
sys-devel/gcc-config:     1.7.3
sys-devel/libtool:        2.4.2
sys-devel/make:           3.82-r4
sys-kernel/linux-headers: 3.9 (virtual/os-headers)
sys-libs/glibc:           2.17
Repositories: gentoo x-portage
ACCEPT_KEYWORDS="amd64"
ACCEPT_LICENSE="* -@EULA"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-O2 -pipe -march=native"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt /var/qmail/alias /var/qmail/control /var/qmail/supervise"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo"
CXXFLAGS="-O2 -pipe -march=native"
DISTDIR="/usr/portage/distfiles"
FCFLAGS="-O2 -pipe"
FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr"
FFLAGS="-O2 -pipe"
GENTOO_MIRRORS="http://distfiles.gentoo.org"
LANG="en_US.utf8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
MAKEOPTS="-j33"
PKGDIR="/usr/local/portage/packages"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/local/portage"
USE="7zip acl acpi amd64 apic berkdb bzip2 clamav cli cracklib crypt ctype cxx diskio dri elf gd gdbm gencertdaily gnutls hardened highvolume iconv iproute2 ipv6 jbig jpeg jpeg2k justify lm_sensors maildir mfd-rewrites mmx modules mysql ncurses nls nptl nptlonly openmp pam pax_kernel pcre perl perlsuid png posix qmail qmail-spp readline session slang smux sockets spamassassin sse sse2 ssl tcpd tiff tls tools truetype unicode urandom utf8 xml xtpax zip zlib" ABI_X86="64" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd 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 cgi cgid 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" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump author" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-5" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_3" RUBY_TARGETS="ruby19 ruby20" USERLAND="GNU" VIDEO_CARDS="fbdev glint intel mach64 mga nouveau nv r128 radeon savage sis tdfx trident vesa via vmware dummy v4l" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account"
Unset:  CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, SYNC, USE_PYTHON

[Comment 1 tomas charvat 2014-05-12 10:00:42 UTC]

I have manage to crash Clamd via clamdtop with 
clamd[22517]: segfault at 110 ip 000000484af73aaf sp 000002a0567fbb30 error 4 in clamd[484af60000+28000]

0.98.3 would really need more testing, it seems to be bugged.
with 0.98.1 I have not have any crash for months

[Comment 2 tomas charvat 2014-05-12 14:05:59 UTC]

Ok,its confirmed bug on Clamav.net now and patch is also available
https://bugzilla.clamav.net/show_bug.cgi?id=10987

[Comment 3 Thomas Raschbacher 2016-05-29 19:29:26 UTC]

I can'T access the bug on the clamav page, but considering how old this is I assume the bug would've been fixed in recent versions.
So closing this as OBSOLETE. should there still be an issue feel free to re-open it.