Patch Name: PHCO_8108 Patch Description: s700_800 10.20 libc cumulative patch Creation Date: 96/09/03 Post Date: 96/09/26 Warning: 96/09/30 - This Critical Warning has been issued by HP. The fix for strcat(3) included in this patch introduces a problem where random truncation of the string may occur. The problem has not been fully characterized by HP, but it has been seen using several general purpose applications like VUE, lex, and yacc. HP plans to release new patches by 10/07/96 that include all the defect fixes in the patch EXCEPT for the strcat(3) defect fix. Due to the random nature of this defect, it is recommended that the patch be deinstalled from all systems on which it is installed as soon as possible. If a customer needs the other defect fixes in this patch, they should install the new patch when it becomes available. Hardware Platforms - OS Releases: s700: 10.20 s800: 10.20 Products: N/A Filesets: OS-Core.C-MIN OS-Core.CORE-SHLIBS ProgSupport.PROG-AUX ProgSupport.PROG-MIN Automatic Reboot?: No Status: General Superseded With Warnings Critical: No Path Name: /hp-ux_patches/s700_800/10.X/PHCO_8108 Symptoms: PHCO_8108: Significant performance degradation of regular expression processing in 10.X compared to 9.x. Affects awk, grep, sed, etc. Some printf variants available in patched 10.x systems weren't exported in 10.20. getcwd returns EINVAL when a negative buflen is passed in. memchr may core dump when char is not found. Sometimes strcat would attempt to access an unmapped page of memory. Defect Description: PHCO_8108: Poor performance of 10.X regular expression processing in comparison to 9.x. The affected entry points were not exported properly. According to X/Open, getcwd takes a second argument of type of size_t and returns EINVAL only when the second argument is 0. memchr tries to read beyond end of valid memory when char is not found in thestring and may core dump. The strcat call didn't handle an optimized pre-fetching strategy properly, causing the read of bytes belonging to unmapped pages. SR: 4701309294 1653155929 1653169615 5003302299 Patch Files: /usr/lib/libc.a /usr/lib/libp/libc.a /usr/lib/libpicc.a /usr/lib/libc.1 what(1) Output: /usr/lib/libc.a: PATCH/10.20:PHCO_8108 libc.a_ID@@/main/r10dav/libc_d av/libc_dav_cpe/1 /ux/libc/libs/libc/archive_pa1/libc.a_ID Aug 27 1996 16:32:41 /usr/lib/libp/libc.a: PATCH/10.20:PHCO_8108 libc.a_ID@@/main/r10dav/libc_d av/libc_dav_cpe/1 /ux/libc/libs/libc/profiled_pa1/libc.a_ID Aug 27 1996 16:55:23 /usr/lib/libpicc.a: PATCH/10.20:PHCO_8108 libc.1_ID@@/main/r10dav/libc_d av/libc_dav_cpe/1 /ux/libc/libs/libc/shared_pa1/libc.1_ID Aug 27 1996 16:44:20 /usr/lib/libc.1: PATCH/10.20:PHCO_8108 libc.1_ID@@/main/r10dav/libc_d av/libc_dav_cpe/1 /ux/libc/libs/libc/shared_pa1/libc.1_ID Aug 27 1996 16:44:20 cksum(1) Output: 3622752309 2384676 /usr/lib/libc.a 2326768212 2566044 /usr/lib/libp/libc.a 2849197702 2563238 /usr/lib/libpicc.a 270108606 1810432 /usr/lib/libc.1 Patch Conflicts: None Patch Dependencies: None Hardware Dependencies: None Other Dependencies: None Supersedes: None Equivalent Patches: None Patch Package Size: 9160 Kbytes Installation Instructions: Please review all instructions and the Hewlett-Packard SupportLine User Guide or your Hewlett-Packard support terms and conditions for precautions, scope of license, restrictions, and, limitation of liability and warranties, before installing this patch. ------------------------------------------------------------ 1. Back up your system before installing a patch. 2. Login as root. 3. Copy the patch to the /tmp directory. 4. Move to the /tmp directory and unshar the patch: cd /tmp sh PHCO_8108 5a. For a standalone system, run swinstall to install the patch: swinstall -x autoreboot=true -x match_target=true \ -s /tmp/PHCO_8108.depot 5b. For a homogeneous NFS Diskless cluster run swcluster on the server to install the patch on the server and the clients: swcluster -i -b This will invoke swcluster in the interactive mode and force all clients to be shut down. WARNING: All cluster clients must be shut down prior to the patch installation. Installing the patch while the clients are booted is unsupported and can lead to serious problems. The swcluster command will invoke an swinstall session in which you must specify: alternate root path - default is /export/shared_root/OS_700 source depot path - /tmp/PHCO_8108.depot To complete the installation, select the patch by choosing "Actions -> Match What Target Has" and then "Actions -> Install" from the Menubar. 5c. For a heterogeneous NFS Diskless cluster: - run swinstall on the server as in step 5a to install the patch on the cluster server. - run swcluster on the server as in step 5b to install the patch on the cluster clients. By default swinstall will archive the original software in /var/adm/sw/patch/PHCO_8108. If you do not wish to retain a copy of the original software, you can create an empty file named /var/adm/sw/patch/PATCH_NOSAVE. Warning: If this file exists when a patch is installed, the patch cannot be deinstalled. Please be careful when using this feature. It is recommended that you move the PHCO_8108.text file to /var/adm/sw/patch for future reference. To put this patch on a magnetic tape and install from the tape drive, use the command: dd if=/tmp/PHCO_8108.depot of=/dev/rmt/0m bs=2k Special Installation Instructions: None