Bug 446922 – net-misc/mediatomb-0.12.1-r4 - segfault when adding files

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description Igor Testen 2012-12-11 21:23:57 UTC]

After update from r3, mediatomb segfaults while adding / refreshing files in the collection.

 

Reproducible: Always

Steps to Reproduce:
1.Update to -r4
2.Start the daemon
3.wait a couple of seconds for segfault (or if no DB, go to the web interface and add some files, then wait for segfault)
Actual Results:  
Segfault with the following in syslog:

kernel: mediatomb[10301]: segfault at 25 ip b724bab7 sp b12d0af0 error 4 in libavformat.so.53.32.100[b71a1000+d3000]


Expected Results:  
No segfault and functionality like in -r3.

The problem appears with my custom config.xml, as well as with the stock config.xml

Going back to r3 (without changing anything else, including config files) immediately solves the problem.

emerge -pqv mediatomb --color=n
[ebuild   R   ] net-misc/mediatomb-0.12.1-r4  USE="curl exif ffmpeg inotify javascript magic mp4 sqlite taglib zlib -debug -id3tag -lastfm -libextractor -mysql -thumbnail" 


emerge --info
Portage 2.1.11.31 (default/linux/x86/10.0, gcc-4.5.4, glibc-2.15-r3, 3.2.12-gentoo i686)
=================================================================
System uname: Linux-3.2.12-gentoo-i686-Intel-R-_Pentium-R-_Dual_CPU_E2160_@_1.80GHz-with-gentoo-2.1
Timestamp of tree: Tue, 11 Dec 2012 03:00:01 +0000
ld GNU ld (GNU Binutils) 2.22
ccache version 3.1.8 [enabled]
app-shells/bash:          4.2_p37
dev-lang/python:          2.7.3-r2, 3.2.3
dev-util/ccache:          3.1.8
dev-util/cmake:           2.8.9
dev-util/pkgconfig:       0.27.1
sys-apps/baselayout:      2.1-r1
sys-apps/openrc:          0.11.8
sys-apps/sandbox:         2.5
sys-devel/autoconf:       2.13, 2.68
sys-devel/automake:       1.11.6
sys-devel/binutils:       2.22-r1
sys-devel/gcc:            4.5.4
sys-devel/gcc-config:     1.7.3
sys-devel/libtool:        2.4-r1
sys-devel/make:           3.82-r3
sys-kernel/linux-headers: 3.6 (virtual/os-headers)
sys-libs/glibc:           2.15-r3
Repositories: gentoo webapp-experimental yarik-overlay local_repo
ACCEPT_KEYWORDS="x86"
ACCEPT_LICENSE="* -@EULA"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-O2 -march=prescott -pipe -fomit-frame-pointer"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt /usr/share/openvpn/easy-rsa"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php5.3/ext-active/ /etc/php/apache2-php5.4/ext-active/ /etc/php/cgi-php5.3/ext-active/ /etc/php/cgi-php5.4/ext-active/ /etc/php/cli-php5.3/ext-active/ /etc/php/cli-php5.4/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo"
CXXFLAGS="-O2 -march=prescott -pipe -fomit-frame-pointer"
DISTDIR="/usr/portage/distfiles"
FCFLAGS="-O2 -march=i686 -pipe"
FEATURES="assume-digests binpkg-logs ccache config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch"
FFLAGS="-O2 -march=i686 -pipe"
GENTOO_MIRRORS="http://gentoo.inode.at/"
LANG="en_US.utf8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --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/portage/local/layman/webapps-experimental /usr/portage/local/layman/yarik-overlay /usr/local/portage"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="acl acpi alsa bash-completion bzip2 cli cracklib crypt cxx dhcp directfb dri exif expat fbcon ffmpeg gd gdbm gpm hal iconv maildir mmx modules mudflap mysql ncurses nls nptl nptlonly openmp pcre perlsuid pppd qmail readline session spamassassin sse ssl ssse3 taglib tcpd unicode usb userlocales utf8 vhosts x86 zlib" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1 emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" 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" 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 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" PHP_TARGETS="php5-3" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_2" RUBY_TARGETS="ruby18 ruby19" USERLAND="GNU" VIDEO_CARDS="intel" 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, USE_PYTHON

[Comment 1 Dmitry Derevyanko 2012-12-20 22:46:09 UTC]

Workaround:
1)mkdir -p /etc/portage/env/net-misc/
2)echo EPATCH_EXCLUDE="mediatomb-0.12.1-libav9.patch" > /etc/portage/env/net-misc/mediatomb

[Comment 2 BT 2012-12-25 02:04:34 UTC]

I can confirm this issue. I had mediatomb-0.12.1-r4 running without issue but a recent rebuild pulled in the libav-9 api fix. This appears to cause a crash during metadata scanning.

mediatomb[20653] general protection ip:7f011e8555ec sp:7f01127fac08 error:0 in libavutil.so.51.35.100[7f011e847000+1b000]

mediatomb-0.12.1-r4 was built with the following:
USE="curl ffmpeg inotify javascript magic mp4 (multilib) mysql taglib zlib -debug -exif -id3tag -lastfm -libextractor -sqlite -thumbnail"

I'm also using stable ffmpeg-0.10.3.

To workaround this issue I'm building MediaTomb with USE=-ffmpeg to disable ffmpeg metadata scanning.

emerge --info
Portage 2.2.0_alpha149 (default/linux/amd64/10.0/server, gcc-4.6.3, glibc-2.15-r3, 3.4.9-gentoo x86_64)
=================================================================
System uname: Linux-3.4.9-gentoo-x86_64-Intel-R-_Core-TM-2_CPU_6300_@_1.86GHz-with-gentoo-2.1
Timestamp of tree: Mon, 24 Dec 2012 22:45:01 +0000
ld GNU ld (GNU Binutils) 2.22
distcc 3.2rc1 x86_64-pc-linux-gnu [disabled]
app-shells/bash:          4.2_p37
dev-lang/python:          2.7.3-r2, 3.2.3
dev-util/cmake:           2.8.9
dev-util/pkgconfig:       0.27.1
sys-apps/baselayout:      2.1-r1
sys-apps/openrc:          0.11.8
sys-apps/sandbox:         2.5
sys-devel/autoconf:       2.13, 2.69
sys-devel/automake:       1.11.6
sys-devel/binutils:       2.22-r1
sys-devel/gcc:            4.6.3
sys-devel/gcc-config:     1.7.3
sys-devel/libtool:        2.4-r1
sys-devel/make:           3.82-r4
sys-kernel/linux-headers: 3.6 (virtual/os-headers)
sys-libs/glibc:           2.15-r3
Repositories: gentoo amak79
ACCEPT_KEYWORDS="amd64"
ACCEPT_LICENSE="* -@EULA"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-march=core2 -O2 -pipe"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/gconf /etc/gentoo-release /etc/php/apache2-php5.4/ext-active/ /etc/php/cgi-php5.4/ext-active/ /etc/php/cli-php5.4/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo"
CXXFLAGS="-march=core2 -O2 -pipe"
DISTDIR="/usr/portage/distfiles"
EMERGE_DEFAULT_OPTS="--with-bdeps=y"
FCFLAGS="-O2 -pipe"
FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch"
FFLAGS="-O2 -pipe"
GENTOO_MIRRORS="ftp://mirror.internode.on.net/pub/gentoo"
LANG="en_AU.UTF-8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
MAKEOPTS="-j3"
PKGDIR="/usr/portage/packages"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_EXTRA_OPTS="--exclude-from=/etc/portage/rsync.exclude"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --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"
SYNC="rsync://mirror.internode.on.net/gentoo-portage"
USE="amd64 berkdb bzip2 caps cli cracklib cxx fortran gdbm gpm iconv mmx modules mudflap multilib ncurses nls nptl openmp pam pcre readline session sse sse2 ssl tcpd threads unicode xml zlib" 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" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" 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" APACHE2_MPMS="worker" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump" 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 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" PHP_TARGETS="php5-3" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_2" QEMU_SOFTMMU_TARGETS="i386 x86_64" RUBY_TARGETS="ruby18 ruby19" USERLAND="GNU" 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, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, USE_PYTHON

[Comment 3 Bradley Broom 2012-12-30 08:00:49 UTC]

Created attachment 333734 [details, diff]
Possible fix


When opening a file to check its avformat, the AVFormatContext pointer was not initialized to NULL before it was passed by reference to the open function.

[Comment 4 BT 2012-12-30 22:52:11 UTC]

(In reply to comment #3)

I can confirm that this patch fixes the issue. Thank you.

[Comment 5 Ian Whyman (thev00d00) (RETIRED) 2013-01-20 16:29:06 UTC]

Thanks fixed in tree.

@@ -4,0 +5,7 @@
+*mediatomb-0.12.1-r5 (20 Jan 2013)
+
+  20 Jan 2013; Ian Whyman <[e-mail]>
+  +files/mediatomb-0.12.1-avformatcontext-pointer.patch,
+  +mediatomb-0.12.1-r5.ebuild, -mediatomb-0.12.1-r4.ebuild:
+  Fix #446922, thanks to Bradley Broom for the patch
+