Dear SCO Customer, Support Level Supplement (SLS) ptf7672a, the NetBIOS Driver Supplement, addresses the following problem: - A UnixWare 7 server using AFPS and netBIOS to connect to clients panics during heavy usage. This is caused by a procedure being called with a null value, which is then dereferenced, resulting in a panic. SLS ptf7672a detects this situation and corrects it. The kernel stack for this panic (using kdb) will be similar to: nb_ssn_kick+4(0)...........................esp:cc9899a8 ret:ce8fd208 nbtrsrv+88(cd74fe40).......................esp:cc9899d0 ret:c008460f runqueues+af(cc989a24).....................esp:cc9899fc ret:c01342cd softint_hdlr+4d(0).........................esp:cc989a10 ret:c01332cf Note that the numbers displayed here will differ for each UnixWare server, but the routine names will be the same. Contents -------- /etc/conf/pack.d/nb/Driver_atup.o /etc/conf/pack.d/nb/Driver_mp.o Software Notes and Recommendations ---------------------------------- SLS ptf7672a should only be installed on: UnixWare 7 Release 7.1.0, 7.1.1 NOTE: This supplement has been superseded by the UnixWare 7.1.1 Maintenance Pack for UnixWare 7.1.1 platforms only. The UnixWare 7.1.1 Maintenance Pack is available from: ftp://ftp.caldera.com/pub/unixware7/uw711pk Installation Instructions ------------------------- 1. Download the ptf7672a.Z file to the /tmp directory on your machine. 2. As root, uncompress the file and add the package to your system using these commands: $ su Password: # uncompress /tmp/ptf7672a.Z # pkgadd -d /tmp/ptf7672a # rm /tmp/ptf7672a Alternatively, this SLS package may be installed in quiet mode, that is, without displaying the release notes and asking for installation confirmation. To do this, use these commands: $ su Password: # uncompress /tmp/ptf7672a.Z # pkgadd -qd /tmp/ptf7672a all # rm /tmp/ptf7672a 3. Reboot the system after installing this package. The release notes displayed prior to installation can be found in: /var/sadm/pkg/ptf7672/install/ptf7672.txt Removal Instructions -------------------- 1. As root, remove the package using these commands: $ su Password: # pkgrm ptf7672 2. Reboot the system after removing this package. If you have questions regarding this SLS, or the product on which it is installed, please contact your software supplier.