Good afternoon, all, On Sun, 28 Jan 2007, William Stearns wrote:
> Vince Berk pointed out what appears to be a thread issue with uml. > The "host" command, part of the bind-utils package, uses threads and crashes > when asked to do anything more complex than show its help screen: > > -bash-3.1# rpm -q bind-libs bind-utils > bind-libs-9.3.3-0.1.rc3.fc6 > bind-utils-9.3.3-0.1.rc3.fc6 > -bash-3.1# host www.google.com. > Segmentation fault > > (strace below) > > I rebuilt the "bind" rpm (which creates bind-utils and bind-libs) > with a one-line change to the spec file, specifically to the configure > command: > > [EMAIL PROTECTED] SPECS]$ diff -bud bind.spec.orig bind.spec > --- bind.spec.orig 2006-12-06 09:55:51.000000000 -0500 > +++ bind.spec 2007-01-28 13:13:54.000000000 -0500 > @@ -320,7 +320,7 @@ > %configure \ > --with-libtool \ > --localstatedir=/var \ > - --enable-threads \ > + --disable-threads \ > --enable-ipv6 \ > --with-pic \ > --with-openssl=/usr \ > > The new packages work just fine inside uml: > > -bash-3.1# rpm -e bind-libs bind-utils > -bash-3.1# rpm -Uvh > /home/wstearns/rpm/RPMS/x86_64/bind-libs-9.3.3-0.1.rc3.x86_64.rpm > /home/wstearns/rpm/RPMS/x86_64/bind-utils-9.3.3-0.1.rc3.x86_64.rpm > Preparing... ########################################### > 1:bind-libs ########################################### [ > 2:bind-utils ########################################### > -bash-3.1# host www.google.com. > www.google.com is an alias for www.l.google.com. > www.l.google.com has address 64.233.161.99 > www.l.google.com has address 64.233.161.104 > www.l.google.com has address 64.233.161.147 > > The problem is completely reproducible; the root filesystem and > kernel at http://ford.stearns.org/uml/ give a crash every time you actually > try to look something up with "host". > Should I be talking to the glibc folks about this? As a side note, if I try to bypass thread support per the instructions at http://dag.wieers.com/howto/compatibility/ , I get a different error (following is with stock "host"): -bash-3.1# LD_ASSUME_KERNEL=2.4.19 host www.google.com host: error while loading shared libraries: libnsl.so.1: cannot open shared object file: No such file or directory -bash-3.1# export LD_ASSUME_KERNEL=2.4.19 -bash-3.1# strace -f host www.google.com. strace: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory Both exist: $ locate libc.so.6 /lib/libc.so.6 /lib/i686/nosegneg/libc.so.6 /lib64/libc.so.6 $ ls -al `locate libc.so.6` lrwxrwxrwx 1 root root 11 Jan 25 21:20 /lib/i686/nosegneg/libc.so.6 -> libc-2.5.so lrwxrwxrwx 1 root root 11 Jan 25 21:20 /lib/libc.so.6 -> libc-2.5.so lrwxrwxrwx 1 root root 11 Jan 25 21:20 /lib64/libc.so.6 -> libc-2.5.so $ ls -al `locate libc-2.5.so` -rwxr-xr-x 1 root root 1589880 Jan 5 12:39 /lib/i686/nosegneg/libc-2.5.so -rwxr-xr-x 1 root root 1573504 Jan 5 12:39 /lib/libc-2.5.so -rwxr-xr-x 1 root root 1672928 Jan 5 12:25 /lib64/libc-2.5.so Cheers, - Bill --------------------------------------------------------------------------- "No question; Saudia Arabia comes down hard on public dissent too, and when it comes to religious freedom... let's just say U.S. right-wingers who want America to be a "Christian nation" and have their beliefs become law ought to be forced to spend a month in Saudi Arabia so they can see how a real theocracy operates. I don't think they'd like it." -- Robin Miller ( http://www.newsforge.com/technology/04/01/16/1551247.shtml ) -------------------------------------------------------------------------- William Stearns ([EMAIL PROTECTED]). Mason, Buildkernel, freedups, p0f, rsync-backup, ssh-keyinstall, dns-check, more at: http://www.stearns.org -------------------------------------------------------------------------- ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
