Patch Name: PHKL_12108 Patch Description: s700 10.10 nanosleep fix for MP hole and early wakeup Creation Date: 97/08/12 Post Date: 97/08/18 Hardware Platforms - OS Releases: s700: 10.10 Products: N/A Filesets: OS-Core.CORE-KRN Automatic Reboot?: Yes Status: General Superseded Critical: Yes PHKL_12108: PANIC HANG PHKL_11236: PANIC So far, the panic only appears on MP systems running the latest Informix release. Path Name: /hp-ux_patches/s700/10.X/PHKL_12108 Symptoms: PHKL_12108: System hangs on UP systems or spinlock deadlocks on MP systems, when using nanosleep system call. If using signals which were to be ignored when in nanosleep() we were awaken eventhough we should not. Patch is especially critical as soon as newer libc patches are installed on the system too. The first releases of libc to be critical are PHCO_10384 for 10.10, PHCO_11004 for 10.20 and PHCO_10652 for 10.01. PHKL_11236: Panic on S800 MP systems using 10.01+ with latest Informix Defect Description: PHKL_12108: System hangs or panics when signal is received which has action set to ignore when in nanosleep system call. Libc patch that changed sleep()'s underlying system call to nanosleep() makes situation worse. PHKL_11236: Random S800 MP system panics when running the latest Informix because of a corner-case MP hole in nanosleep which is seen when nanosleep() is called from within a signal handler. SR: 5003360024 Patch Files: /usr/conf/lib/libhp-ux.a(pm_timers.o) /usr/conf/lib/libhp-ux.a(subr_timers.o) what(1) Output: /usr/conf/lib/libhp-ux.a(pm_timers.o): pm_timers.c $Date: 97/08/12 16:28:36 $ $Revision: 1. 3.89.11 $ PATCH_10.10 (PHKL_12108) /usr/conf/lib/libhp-ux.a(subr_timers.o): subr_timers.c $Date: 97/08/11 15:16:38 $ $Revision: 1.3.89.17 $ PATCH_10.10 (PHKL_12108) cksum(1) Output: 2623459365 6696 /usr/conf/lib/libhp-ux.a(pm_timers.o) 2860451264 10148 /usr/conf/lib/libhp-ux.a(subr_timers.o) Patch Conflicts: None Patch Dependencies: None Hardware Dependencies: None Other Dependencies: None Supersedes: PHKL_11236 Equivalent Patches: PHKL_12112: s700: 10.01 PHKL_12113: s800: 10.01 PHKL_12109: s800: 10.10 PHKL_12110: s700: 10.20 PHKL_12111: s800: 10.20 Patch Package Size: 80 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 PHKL_12108 5a. For a standalone system, run swinstall to install the patch: swinstall -x autoreboot=true -x match_target=true \ -s /tmp/PHKL_12108.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/PHKL_12108.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/PHKL_12108. 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 PHKL_12108.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/PHKL_12108.depot of=/dev/rmt/0m bs=2k Special Installation Instructions: None