Patch Name: PHKL_7899 Patch Description: s700 10.20 JFS KI, page fault, deadlock, & setuid fixes Creation Date: 96/07/09 Post Date: 96/07/17 Hardware Platforms - OS Releases: s700: 10.20 Products: N/A Filesets: JournalFS.VXFS-BASE-KRN Automatic Reboot?: Yes Status: General Superseded Critical: Yes PHKL_7899: PANIC HANG OTHER The KI instrumentation fix does not fall into any of specified symptoms; the root setuid fix does not either. Path Name: /hp-ux_patches/s700/10.X/PHKL_7899 Symptoms: PHKL_7899: KI queuedone, enqueue and queuestart traces on JFS may contain NULL values in the b_apid and b_upid fields. With a system running a heavy load using JFS on LVM, the following panic may occur: "lv_syncx: returning error: 5" Systems running JFS may hang due to a deadlock problem. The setuid bit will be removed on a JFS file when the file is edited or text has been appended to it when run as root. Defect Description: PHKL_7899: KI problem: The JFS buffer allocation and IO paths were not fully instrumented causing buffer header b_apid and b_upid fields not to be updated consistently. The resulting KI queuedone, enqueue, and queuestart traces contain NULL values in these fields. A panic can occur with JFS on LVM due to an inode being able to change identity before it and its dirty pages are flushed to disk in vx_freeze_iflush(). System can deadlock due to a locking order problem in JFS when vx_fast_read() is called from VOP_BREAD. When a JFS file is created with the SETUID flag, the setuid bit is removed when the file has been edited with vi or text has been appended to it; this should only be the case when the writer is not root. SR: 4701329292 4701329441 4701329300 1653166066 Patch Files: /usr/conf/lib/libvxfs_base.a(vx_bio.o) /usr/conf/lib/libvxfs_base.a(vx_iflush.o) /usr/conf/lib/libvxfs_base.a(vx_inode.o) /usr/conf/lib/libvxfs_base.a(vx_rdwri.o) what(1) Output: /usr/conf/lib/libvxfs_base.a(vx_bio.o): vx_bio.c $Date: 96/07/09 10:55:03 $ $Revision: 1.7.9 8.9 $ PATCH_10.20 (PHKL_7899) /usr/conf/lib/libvxfs_base.a(vx_iflush.o): vx_iflush.c $Date: 96/07/09 10:56:24 $ $Revision: 1. 6.98.12 $ PATCH_10.20 (PHKL_7899) /usr/conf/lib/libvxfs_base.a(vx_inode.o): vx_inode.c $Date: 96/07/09 10:56:32 $ $Revision: 1.7 .98.18 $ PATCH_10.20 (PHKL_7899) /usr/conf/lib/libvxfs_base.a(vx_rdwri.o): vx_rdwri.c $Date: 96/07/09 10:56:36 $ $Revision: 1.7 .98.20 $ PATCH_10.20 (PHKL_7899) cksum(1) Output: 3798845514 10476 /usr/conf/lib/libvxfs_base.a(vx_bio.o) 3307349804 29780 /usr/conf/lib/libvxfs_base.a(vx_iflush.o) 1192397402 44784 /usr/conf/lib/libvxfs_base.a(vx_inode.o) 500185071 35604 /usr/conf/lib/libvxfs_base.a(vx_rdwri.o) Patch Conflicts: None Patch Dependencies: None Hardware Dependencies: None Other Dependencies: None Supersedes: None Equivalent Patches: None Patch Package Size: 170 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_7899 5a. For a standalone system, run swinstall to install the patch: swinstall -x autoreboot=true -x match_target=true \ -s /tmp/PHKL_7899.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_7899.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. The cluster clients must be shut down as described in step 5b. By default swinstall will archive the original software in /var/adm/sw/patch/PHKL_7899. 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_7899.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_7899.depot of=/dev/rmt/0m bs=2k Special Installation Instructions: None