[Bug Report] ----------------------------- Category: Other Package: nam ns-allinone-2.30 OS: GNU/Linux (Fedora core, both version 6 and 7) Environment Variables: KDE_MULTIHEAD=false SSH_AGENT_PID=3183 HOSTNAME=blinky TERM=xterm SHELL=/bin/bash HISTSIZE=1000 KDE_NO_IPV6=1 GS_LIB=/home/russell/.fonts WINDOWID=48234503 KDE_FULL_SESSION=true USER=russell LD_LIBRARY_PATH=, /home/russell/ns-2/ns-allinone-2.30/otcl-1.12, /home/russell/ns-2/ns-allinone-2.30/lib LS_COLORS=no=00:fi=00:di=00;34:ln=00;36:pi=40;33:so=00;35:bd=40;33;01:cd=40;33;01:or=01;05;37;41:mi=01;05;37;41:ex=00;32:*.cmd=00;32:*.exe=00;32:*.com=00;32:*.btm=00;32:*.bat=00;32:*.sh=00;32:*.csh=00;32:*.tar=00;31:*.tgz=00;31:*.arj=00;31:*.taz=00;31:*.lzh=00;31:*.zip=00;31:*.z=00;31:*.Z=00;31:*.gz=00;31:*.bz2=00;31:*.bz=00;31:*.tz=00;31:*.rpm=00;31:*.cpio=00;31:*.jpg=00;35:*.gif=00;35:*.bmp=00;35:*.xbm=00;35:*.xpm=00;35:*.png=00;35:*.tif=00;35: TCL_LIBRARY=, /home/russell/ns-2/ns-allinone-2.30/tcl8.4.13/library SSH_AUTH_SOCK=/tmp/ssh-SPqkYw3135/agent.3135 KDEDIR=/usr SESSION_MANAGER=local/blinky:/tmp/.ICE-unix/3255 USERNAME=russell XDG_CONFIG_DIRS=/etc/kde/xdg:/etc/xdg KONSOLE_DCOP=DCOPRef(konsole-2009,konsole) PATH=/usr/kerberos/bin:/usr/local/bin:/usr/bin:/bin:/usr/X11R6/bin:/home/russell/bin:/home/russell/ns-2/ns-allinone-2.30/bin:/home/russell/ns-2/ns-allinone-2.30/tcl8.4.13/unix:/home/russell/ns-2/ns-allinone-2.30/tk8.4.13/unix DESKTOP_SESSION=default MAIL=/var/spool/mail/russell GDM_XSERVER_LOCATION=local KONSOLE_DCOP_SESSION=DCOPRef(konsole-2009,session-1) PWD=/home/russell INPUTRC=/etc/inputrc [EMAIL PROTECTED] LANG=en_US.UTF-8 KDE_IS_PRELINKED=1 GDMSESSION=default SSH_ASKPASS=/usr/libexec/openssh/gnome-ssh-askpass SHLVL=3 HOME=/home/russell LOGNAME=russell CVS_RSH=ssh DBUS_SESSION_BUS_ADDRESS=unix:abstract=/tmp/dbus-YA16wocG6a,guid=5e6d55f3b34088d49b768000460bd777 LESSOPEN=|/usr/bin/lesspipe.sh %s DISPLAY=:0 G_BROKEN_FILENAMES=1 COLORTERM= XAUTHORITY=/tmp/.gdmUL4WPT _=/usr/bin/env
----------------------------- Description: Description of Problem: Using Fedora Core 5 and 6, with the smb service running and system setup for network name resolution using wins (ie /etc/nsswitch.conf contains the line "hosts: wins files dns"), then when nam is run the application *sometimes* quits with the error reported in "actual results" section below. How Easily Reproducible: Once the problem starts to occur, then it is highly reproducible. In my case, removing the "wins" entry from the hosts line in /etc/nsswitch.conf seems to cure the problem everytime, (see comments in the "addition information" section for the association of this problem with name resolution using wins) However, reinserting "wins" back into the hosts line of nsswitch.conf, after a succesful run, does not always result in the problem re-occuring immediately. Steps to Reproduce: (describe the minimal set of steps necessary to trigger the bug) 1. GNU/Linux Fedora Core 5 or 6 2. Set hosts line in /etc/nsswitch.conf to be "hosts: wins files dns" (i.e. network name resolution using wins is enabled) 3. ensure that smb service is installed and running 4. run nam (with or without arguments) Actual Results: (describe what the application did after performing the above steps) > random() called in nam. > Random is not portable, please use Random::uniform() instead. > Aborted Expected Results: (describe what the application should have done, were the bug not present) The program should run, without errors or otherwise failing. Additional Information: The error message is generated by the random() function in s-allinone-2.30/nam-1.12/random.cc Recompiling nam with -g option, debugging in gdb and running a backtrace gives the following: (gdb) backtrace 14 #0 0x001e9402 in __kernel_vsyscall () #1 0x006f8d40 in raise () from /lib/libc.so.6 #2 0x006fa591 in abort () from /lib/libc.so.6 #3 0x08071dc7 in random () #4 0x00257297 in sys_random () from /lib/libnss_wins.so.2 #5 0x0024b2f3 in startlmhosts () from /lib/libnss_wins.so.2 #6 0x0024b475 in name_query () from /lib/libnss_wins.so.2 #7 0x0024bc37 in resolve_wins () from /lib/libnss_wins.so.2 #8 0x0020500e in _nss_wins_gethostbyname_r () from /lib/libnss_wins.so.2 #9 0x007b3d87 in gethostbyname_r@@GLIBC_2.1.2 () from /lib/libc.so.6 #10 0x007b36df in gethostbyname () from /lib/libc.so.6 #11 0x081ac9c1 in CreateSocketAddress () #12 0x081aca51 in CreateSocket () #13 0x081ad07e in Tcl_OpenTcpClient () (More stack frames follow...) >From the backtrace, it is apparently that the problematic random() function is >called from libnss_wins.so.2. WTF!!! Changing the hosts line in >/etc/nsswitch.conf to "hosts: file dns" (i.e. stop libnss_wins.so.2 from being >called) seems to fix the problem everytime. However, once the application has successfully run following the removal of the wins entry, then reinsterting the wins entry back into nsswitch.conf does not immediately/always result in the problem re-occuring (without a reboot???).
