| Summary: | dev-python/pylibpcap segfaults | ||
|---|---|---|---|
| Product: | Gentoo Linux | Reporter: | Jukka Ruohonen <drear> |
| Component: | New packages | Assignee: | Python Gentoo Team <python> |
| Status: | RESOLVED FIXED | ||
| Severity: | normal | ||
| Priority: | High | ||
| Version: | unspecified | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Package list: | Runtime testing required: | --- | |
| Attachments: | strace | ||
zealot python # emerge --info --ignore-default-opts Portage 2.1.2.7 (default-linux/amd64/2006.1, gcc-4.1.1, glibc-2.5-r2, 2.6.20-hardened-r2 x86_64) ================================================================= System uname: 2.6.20-hardened-r2 x86_64 AMD Athlon(tm) 64 X2 Dual Core Processor 3800+ Gentoo Base System release 1.12.9 Timestamp of tree: Mon, 21 May 2007 01:50:01 +0000 dev-java/java-config: 1.3.7, 2.0.31-r5 dev-lang/python: 2.4.4-r4 dev-python/pycrypto: 2.0.1-r5 sys-apps/sandbox: 1.2.17 sys-devel/autoconf: 2.13, 2.61 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10 sys-devel/binutils: 2.16.1-r3 sys-devel/gcc-config: 1.3.16 sys-devel/libtool: 1.5.22 virtual/os-headers: 2.6.17-r2 ACCEPT_KEYWORDS="amd64" AUTOCLEAN="yes" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=athlon64 -msse3 -O1 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/share/X11/xkb /usr/share/config" CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/gconf /etc/java-config/vms/ /etc/revdep-rebuild /etc/terminfo /etc/texmf/web2c /usr/kde/*/share/apps/kjava/kjava.policy /usr/kde/*/shutdown/agent-shutdown.sh /usr/kde/3.5/share/services/rlogin.protocol" CXXFLAGS="-march=athlon64 -msse3 -O1 -pipe" DISTDIR="/usr/portage/distfiles" EMERGE_DEFAULT_OPTS="--ask --verbose" FEATURES="buildpkg distlocks fixpackages metadata-transfer parallel-fetch sandbox sfperms suidctl userfetch userpviv usersandbox" GENTOO_MIRRORS="http://trumpetti.atm.tut.fi/gentoo http://mirror.uni-c.dk/pub/gentoo http://ds.thn.htu.se/linux/gentoo http://mirror.gentoo.no/ http://distfiles.gentoo.org" LANG="en_US.UTF-8" LC_ALL="en_US.UTF-8" LINGUAS="en en_GB en_US" MAKEOPTS="-j3" PKGDIR="/usr/portage/packages" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --delete-after --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --filter=H_**/files/digest-*" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage" SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage" USE="X alsa amd64 berkdb bitmap-fonts bzip2 cli cracklib crypt cups curl dri fortran gdbm gif gpm iconv isdnlog jpeg kde kdehiddenvisibility libg++ midi mudflap ncurses nls nptl nptlonly opengl openmp pam pcre perl png ppds pppd python qt3 readline reflection session spell spl ssl tcl tcltk tcpd tetex tiff tk truetype truetype-fonts type1-fonts unicode xcomposite xinerama xorg zlib" ALSA_CARDS="emu10k1 intel8x0" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mulaw multi null plug rate route share shm softvol" ELIBC="glibc" INPUT_DEVICES="keyboard mouse" KERNEL="linux" LINGUAS="en en_GB en_US" USERLAND="GNU" VIDEO_CARDS="nv" Unset: CTARGET, INSTALL_MASK, LDFLAGS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS Created attachment 119916 [details]
strace
Can you test if sniff.py under examples work fine? I can reproduce the error here but sniff.py works fine. Probably a change in libpcap caused this. I confirm that sniff.py works without problems. Also all my own derivatives from it and other small functions with the package are working just fine. If extensive debugging of the bindings to libpcap is understood to be an upstream issue, perhaps a temporal solution would be to exclude the findalldevs.py from the ebuild with the examples USE flag? Ok, I did some search on this one. pylibpcap raises an exception when it tries to unpack an unknown address family. Other than that the package works fine for sniffing. Upstream decided to silently ignore this, and return a string indicating the family. This may not be useful but typically caller is only interested in families that libpcap knows about. I've applied their change in CVS to our package in the tree which makes pcap.findalldevs() work fine. Thanks for reporting ;) |
Hi. Just started to investigate a nice looking package, pylibpcap, but did not get far. A working example: zealot python # whoami root zealot python # cat eth.py #!/usr/bin/env python # a nice working example # from /usr/share/doc/pylibpcap-0.5.1/examples/findalldevs.py import pcap def test_findalldevs(): print pcap.findalldevs() test_findalldevs() zealot python # python eth.py at line 516 at line 516 Traceback (most recent call last): File "eth.py", line 10, in ? test_findalldevs() File "eth.py", line 8, in test_findalldevs print pcap.findalldevs() Exception: unsupported address family zealot python # giving a related Grsecurity notice when run as an user May 21 21:42:41 zealot grsec: denied resource overstep by requesting 4096 for RLIMIT_CORE against limit 0 for /usr/bin/python2.4[python:27680] uid/euid:1000/1000 gid/egid:1000/1000, parent /bin/bash[bash:9745] uid/euid:1000/1000 gid/egid:1000/1000 hence telling that the program segfaulted. This happens both with pylibpcap-0.5.1 and libpcap-0.9.4/0.9.5. Strace is attached. Please request more information, as I do not know where to start to debug this.