Patch Name: PHKL_20096

Patch Description: s700 10.20 VxFS: kdm cumulative patch

Creation Date: 99/10/09

Post Date:  99/10/13

Hardware Platforms - OS Releases:
	s700: 10.20

Products: N/A

Filesets:
	AdvJournalFS.VXFS-ADV-KRN JournalFS.VXFS-BASE-KRN OMS.f_fs

Automatic Reboot?: Yes

Status: General Release

Critical:
	Yes
	PHKL_20096: PANIC
	PHKL_18144: PANIC

Path Name: /hp-ux_patches/s700/10.X/PHKL_20096

Symptoms:
	PHKL_20096:
	( SR: 8606106454 DTS: JAGab75574 )

	Systems crash due to data page fault in delay
	invoked from kdm_k_get_nextevent(). The panic
	stack looks like:

	 panic+0x10
	 report_trap_or_int_and_panic+0xe8
	 trap+0xa48
	 $RDB_trap_patch+0x20
	 delay+0x44
	 kdm_k_get_nextevent+0x110
	 dmapi_ioctl+0x104
	 spec_ioctl+0xd4
	 vno_ioctl+0x98
	 ioctl+0x78
	 syscall+0x1a4
	 $syscallrtn+0x0

	PHKL_18144:
	SR: 1653297598  CR: JAGaa94370

	Systems serving web pages with Netscape Enterprise Server
	from a file system controlled by OmniStorage saw data
	page fault panics with a stack trace that looks like:

		panic+0x10
		report_trap_or_int_and_panic+0xe8
		report_trap_or_int_and_panic+0xe8
		trap+0xa48
		$call_trap+0x20
		vx_event_clear+0xc
		kdm_eventprocess+0x50
		kdm_eventpost+0x174
		kdm_mmap_event_gen+0x168
		vx_mmap+0xd8
		mapvnode+0x3c4
		smmap_common+0x5b8
		smmap+0x38
		syscall+0x1a4
		$syscallrtn+0x0

	This problem might also show up as an instruction page
	fault from kdm_eventprocess.

Defect Description:
	PHKL_20096:
	( SR: 8606106454 DTS: JAGab75574 )

	kdm_k_get_nextevent invokes delay() by mistake, it should
	call KDM_DELAY() instead.

	Resolution:
	Invoke KDM_DELAY from kdm_k_get_nextevent, instead of
	delay().

	PHKL_18144:
	SR: 1653297598 CR: JAGaa94370

	While VxFS is waiting for an event to be posted it sleeps
	at a level where it can catch signals.  The sleep system
	call should return a non-zero value if it was awakened
	by a signal.  With some combination of signals sleep
	returns with a zero value even though a signal woke it
	and the event VxFS is waiting for has not been posted.
	The assumption that the event has been posted caused
	VxFS to process an event and free it, when a real
	event came in it caused a panic.

	Resolution:
	Check to make sure that the event is posted when
	sleep returns a zero exit value.  Go back to sleep
	if the event is not posted.

SR:
	1653297598 8606106454

Patch Files:
	/usr/conf/lib/libdmapi.a(kdm_core.o)
	/usr/conf/lib/libvxfs_base.a(vx_hpuxsubr.o)

what(1) Output:
	/usr/conf/lib/libdmapi.a(kdm_core.o):
		kdm_core.c $Date: 99/10/09 10:54:49 $ $Revision: 1.2
			.98.12 $ PATCH_10.20 (PHKL_20096)
	/usr/conf/lib/libvxfs_base.a(vx_hpuxsubr.o):
		vx_hpuxsubr.c $Date: 99/04/01 10:25:03 $ $Revision:
			1.7.98.15 $ PATCH_10.20 (PHKL_18144)

cksum(1) Output:
	1217836092 48732 /usr/conf/lib/libdmapi.a(kdm_core.o)
	4212891951 16336 /usr/conf/lib/libvxfs_base.a(vx_hpuxsubr.o)

Patch Conflicts: None

Patch Dependencies:
	s700: 10.20: PHKL_16750

Hardware Dependencies: None

Other Dependencies: None

Supersedes:
	PHKL_18144

Equivalent Patches: None

Patch Package Size: 130 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_20096

	5a. For a standalone system, run swinstall to install the
	    patch:

		swinstall -x autoreboot=true -x match_target=true \
			-s /tmp/PHKL_20096.depot

	By default swinstall will archive the original software in
	/var/adm/sw/patch/PHKL_20096.  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_20096.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_20096.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions:
	This patch depends on base patch PHKL_16750.
	For successful installation, please ensure that PHKL_16750
	is in the same depot with this patch, or PHKL_16750 is
	already installed.