using psmisc-21.8: "pstree -a" results in a segfault using psmisc-21.6: "pstree -a" runs just fine magratea psmisc # pstree -a init ├─agetty 38400 tty1 linux ├─agetty 38400 tty2 linux ├─agetty 38400 tty3 linux ├─agetty 38400 tty4 linux ├─agetty 38400 tty5 linux ├─agetty 38400 tty6 linux ├─cupsd ├─dcopserver ├─dhcpcd -h magratea eth0 ├─(events/0) ├─gconfd-2 15 ├─kaccess ├─kded Segmentation fault magratea psmisc # strace pstree -a execve("/usr/bin/pstree", ["pstree", "-a"], [/* 47 vars */]) = 0 ... ... ... write(1, "init \n", 7init ) = 7 write(1, " \342\224\234\342\224\200agetty 38400 tty1 linux\n", 32 ├─agetty 38400 tty1 linux ) = 32 write(1, " \342\224\234\342\224\200agetty 38400 tty2 linux\n", 32 ├─agetty 38400 tty2 linux ) = 32 write(1, " \342\224\234\342\224\200agetty 38400 tty3 linux\n", 32 ├─agetty 38400 tty3 linux ) = 32 write(1, " \342\224\234\342\224\200agetty 38400 tty4 linux\n", 32 ├─agetty 38400 tty4 linux ) = 32 write(1, " \342\224\234\342\224\200agetty 38400 tty5 linux\n", 32 ├─agetty 38400 tty5 linux ) = 32 write(1, " \342\224\234\342\224\200agetty 38400 tty6 linux\n", 32 ├─agetty 38400 tty6 linux ) = 32 write(1, " \342\224\234\342\224\200automount --timeout 60 -"..., 98 ├─automount --timeout 60 --pid-file /var/run/autofs.neofonie.pid /neofonie yp auto.neofonie ) = 98 write(1, " \342\224\234\342\224\200automount --timeout 60 -"..., 96 ├─automount --timeout 60 --pid-file /var/run/autofs.infonie.pid /infonie yp auto.neofonie ) = 96 write(1, " \342\224\234\342\224\200automount --submount --t"..., 71 ├─automount --submount --timeout=60 /neofonie/home yp auto.home ) = 71 write(1, " \342\224\234\342\224\200automount --submount --t"..., 70 ├─automount --submount --timeout=60 /infonie/home yp auto.home ) = 70 write(1, " \342\224\234\342\224\200cupsd\n", 14 ├─cupsd ) = 14 write(1, " \342\224\234\342\224\200dcopserver\n", 19 ├─dcopserver ) = 19 write(1, " \342\224\234\342\224\200dhcpcd -h magratea eth0\n", 32 ├─dhcpcd -h magratea eth0 ) = 32 write(1, " \342\224\234\342\224\200(events/0)\n", 19 ├─(events/0) ) = 19 write(1, " \342\224\234\342\224\200gconfd-2 15\n", 20 ├─gconfd-2 15 ) = 20 write(1, " \342\224\234\342\224\200kaccess\n", 16 ├─kaccess ) = 16 write(1, " \342\224\234\342\224\200kded \n", 15 ├─kded ) = 15 --- SIGSEGV (Segmentation fault) @ 0 (0) --- +++ killed by SIGSEGV +++ a normal "pstree" runs just fine and results in: magratea psmisc # pstree init─┬─6*[agetty] ├─4*[automount] ├─cupsd ├─dcopserver ├─dhcpcd ├─events/0 ├─gconfd-2 ├─kaccess ├─kded───{kded} ├─kdeinit─┬─artsd │ ├─kio_file │ ├─klauncher │ ├─konsole─┬─6*[bash───ssh] Reproducible: Always Steps to Reproduce: 1. 2. 3. magratea psmisc # emerge info Portage 2.0.53_rc7 (default-linux/x86/2005.0, gcc-3.3.6, glibc-2.3.5-r3, 2.6.13-gentoo-r5 i686) ================================================================= System uname: 2.6.13-gentoo-r5 i686 AMD Athlon(tm) XP 3000+ Gentoo Base System version 1.6.13 dev-lang/python: 2.3.4-r1, 2.4.2 sys-apps/sandbox: 1.2.13 sys-devel/autoconf: 2.13, 2.59-r7 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r1 sys-devel/binutils: 2.16.1 sys-devel/libtool: 1.5.20-r1 virtual/os-headers: 2.6.11-r3 ACCEPT_KEYWORDS="x86 ~x86" AUTOCLEAN="yes" CBUILD="i686-pc-linux-gnu" CFLAGS="-O2 -march=athlon-xp -fomit-frame-pointer" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3.4/env /usr/kde/3.4/share/config /usr/kde/3.4/shutdown /usr/kde/3/share/config /usr/lib/X11/xkb /usr/lib/mozilla/defaults/pref /usr/share/config /var/qmail/control" CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d" CXXFLAGS="-O2 -march=athlon-xp -fomit-frame-pointer" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig distlocks sandbox sfperms strict" GENTOO_MIRRORS="http://gentoo.osuosl.org/ ftp://ftp.heanet.ie/pub/gentoo/ ftp://ftp.citkit.ru/pub/Linux/gentoo" LANG="de_DE.utf8" LC_ALL="de_DE.utf8" LINGUAS="de" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" SYNC="rsync://rsync.de.gentoo.org/gentoo-portage" USE="x86 3dnow 3dnowext X acpi alsa apache2 apm arts audiofile avi bash-completion berkdb bitmap-fonts bmp browserplugin bzip2 cairo cjk cli cpudetection crypt cups curl dba dbus dlloader doc dri eds emboss encode expat fam fbcon fbdev firefox flac foomaticdb fortran freetype gd gdbm gif gpm gstreamer gtk gtk2 hal idn imagemagick imlib ipv6 java javascript jpeg junit kde lcms ldap libg++ libwww mad mhash mikmod mmx mmxext mng motif mozilla mp3 mpeg mysql ncurses nis nls nptl nptlonly nsplugins nvidia ogg oggvorbis opengl oss pam pcre pdflib pear perl php png ppds python qt quicktime readline real sdl slang spell sqlite sse ssl svg svga tcpd tidy tiff truetype truetype-fonts type1 type1-fonts udev unicode usb vorbis win32codecs xine xml2 xmms xprint xscreensavers xsl xslt xv zeroconf zlib linguas_de userland_GNU kernel_linux elibc_glibc" Unset: ASFLAGS, CTARGET, LDFLAGS, PORTDIR_OVERLAY
try running it through gdb as rebuilding it with CFLAGS=-g and FEATURES=nostrip
aaron@magratea ~/newsex/etc/xdm $ gdb /usr/bin/pstree core GNU gdb 6.3 Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "i686-pc-linux-gnu"...Using host libthread_db library "/lib/libthread_db.so.1". Core was generated by `pstree -a'. Program terminated with signal 11, Segmentation fault. warning: current_sos: Can't read pathname for load map: Eingabe-/Ausgabefehler Reading symbols from /lib/libncurses.so.5...done. Loaded symbols for /lib/libncurses.so.5 Reading symbols from /lib/libc.so.6...done. Loaded symbols for /lib/libc.so.6 Reading symbols from /lib/libdl.so.2...done. Loaded symbols for /lib/libdl.so.2 Reading symbols from /lib/ld-linux.so.2...done. Loaded symbols for /lib/ld-linux.so.2 #0 0x0804997e in dump_tree (current=0x804f188, level=2, rep=1, leaf=0, last=1, prev_uid=1167, closing=0) at pstree.c:446 446 pstree.c: Datei oder Verzeichnis nicht gefunden. in pstree.c (gdb) bt full #0 0x0804997e in dump_tree (current=0x804f188, level=2, rep=1, leaf=0, last=1, prev_uid=1167, closing=0) at pstree.c:446 walk = (CHILD *) 0x8049167 next = (CHILD *) 0xbf861e68 scan = (CHILD **) 0x804a980 pw = (const struct passwd *) 0xb7f64ca0 lvl = 2 i = 0 add = 0 offset = 15 len = 0 swapped = 1 info = 1 count = 10 comm_len = 6 first = -1209817446 tmp = 0xbf861e3c "" here = 0x804f18e "" comm_tmp = "\000�\017" #1 0x08049b56 in dump_tree (current=0x804f1c0, level=1, rep=1, leaf=0, last=0, prev_uid=0, closing=-1) at pstree.c:482 walk = (CHILD *) 0x804f1f8 next = (CHILD *) 0xbf861f18 scan = (CHILD **) 0x804a980 pw = (const struct passwd *) 0xb7f64ca0 lvl = 1 i = 3 add = 0 offset = 9 len = 0 swapped = 1 info = 1 count = 10 comm_len = 4 first = -1209817446 tmp = 0xbf861eec "" here = 0x804f20a "" comm_tmp = "\000�\a" #2 0x08049b56 in dump_tree (current=0x804deb0, level=0, rep=1, leaf=1, last=1, prev_uid=0, closing=-1) at pstree.c:482 walk = (CHILD *) 0x804f218 next = (CHILD *) 0x0 scan = (CHILD **) 0x804dd30 pw = (const struct passwd *) 0xbf8624b4 lvl = 0 i = 3 add = 0 ---Type <return> to continue, or q <return> to quit--- offset = 5 len = 0 swapped = 1 info = 1 count = 1133257550 comm_len = 4 first = 0 tmp = 0x400 <Address 0x400 out of bounds> here = 0x804deea "" comm_tmp = "\000\000\000\000" #3 0x0804a8e4 in main (argc=2, argv=0xbf8624b4) at pstree.c:924 current = (PROC *) 0x0 winsz = {ws_row = 45, ws_col = 137, ws_xpixel = 0, ws_ypixel = 0} pw = (const struct passwd *) 0x0 pid = 1 highlight = 0 termcap_area = "[&\206\004\000\000\000\000\000\000\000H�000@�f�����\000�\024\212\004\b\024\212\004\b\000\000\000\000��002\000\000\000vݷ\000\000\000\000X \206\a�\b\000\000\0004y޷", '\0' <repeats 12 times>, "D\000\000\000\000\000\000\000\204 \206\001\000\000\000�\220vݷ\000\000\000\000 \000\000\000\024\212\004\bx\023�023�002\000\000\0008I�004{ݷ��000p�u\001\000��\"\206\234\f�Q�214V�, '\0' <repeats 52 times>, "\024�\000\000\000\000"... termname = 0x2 <Address 0x2 out of bounds> c = -1
ive added 21.9, please try that if it fails, try 21.6
get back to us please
I am not able to reproduce the problem anymore with any psmisc version. I think back when it happened I had a zombie process hanging arround. I'll report back if it ever happens again to me.
thanks
