Patch Name: PHKL_29818

Patch Description: s700_800 11.11 Cumulative DLKM module patch

Creation Date: 03/10/07

Post Date: 03/10/21

Hardware Platforms - OS Releases:
	s700: 11.11
	s800: 11.11

Products: N/A

Filesets:
	OS-Core.CORE-KRN,fr=B.11.11,fa=HP-UX_B.11.11_32/64,v=HP
	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_32,v=HP
	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_64,v=HP

Automatic Reboot?: Yes

Status: General Release

Critical:
	Yes
	PHKL_29818: HANG
	PHKL_22994: PANIC

Category Tags:
	defect_repair enhancement general_release critical panic
	halts_system

Path Name: /hp-ux_patches/s700_800/11.X/PHKL_29818

Symptoms:
	PHKL_29818:
	( SR:8606320283 CR:JAGae82767 )
	rmsf -H hangs if the driver associated with the h/w path
	is a DLKM module.

	PHKL_26425:
	( SR:8606231066 CR:JAGae00304 )
	Graphics driver cannot unload module from kernel.

	( SR:8606246033 CR:JAGae12489 )
	During module unload, because of incorrect locking of the
	module entry, the module state may change and the unload
	operation may not succeed.

	PHKL_22994:
	( SR:8606162678 CR:JAGad31994 )
	A DLKM load failure on automatic loading by
	open(2) can result in non-standard error codes
	being returned by open(2).

	( SR:8606170779 CR:JAGad40043 )
	The system will panic if the text and data size of
	a module hits a certain window.

	( SR:8606154498 CR:JAGad23815 )
	None.

	( SR:8606137247 CR:JAGad06365 )
	None

	( SR:8606171142 CR:JAGad40406 )
	If a customer were to use a load/stress script to repeatedly
	register, load, unload, and unregister a single module, AND
	if the customer were to run several copies of this script
	asynchronously, the customer might hit a window in which
	(for WSIO modules) the system panicked.

Defect Description:
	PHKL_29818:
	( SR:8606320283 CR:JAGae82767 )
	DLKM Infrastructure does not set the correct flag in the
	device switch table entry for a dynamically loadable driver
	that uses dynamic major number.  This causes rmsf to hang.

	Resolution:
	Set the correct flag in the switch table entry.

	PHKL_26425:
	( SR:8606231066 CR:JAGae00304 )
	The DLKM infrastructure does not provide an interface to
	unload a module to kernel internal functions.

	Resolution:
	Provided an unload interface to be used by kernel internal
	functions.

	( SR:8606246033 CR:JAGae12489 )
	Incorrect locking protection while checking the module
	state, in the unload path.

	Resolution:
	Fixed the locking bug in the unload path.

	PHKL_22994:
	( SR:8606162678 CR:JAGad31994 )
	DLKM load failure as part of automatic loading when
	open(2) is called results in possibly returning non-standard
	error return codes to open(2).

	Resolution:
	Print errors returned to automatic loading code by
	modld(), then mask the errors by returning ENODEV.

	( SR:8606170779 CR:JAGad40043 )
	If the text and data size of the module combine to be just
	slightly under an integral number of pages, AND the module
	has enough text to require a second long-branch stubs table,
	and the module has a zero-length PROGBITS section (such
	as millicode) before the .text section in the ELF image
	file, an (erroneous) additional second long-branch stubs
	table will be placed after the correct one, overflowing
	the allocated memory and causing a system panic when
	an address in the erroneous additional table is
	dereferenced.

	Resolution:
	Avoid performing actions for zero-length sections of the
	ELF image file.

	( SR:8606154498 CR:JAGad23815 )
	In the debug kernel, the assert treats 0 as an invalid
	major number.

	Resolution:
	Treat 0 as a valid major number.

	( SR:8606137247 CR:JAGad06365 )
	We don't test for a NULL return after a memory allocation
	with M_NOWAIT specified.

	Resolution:
	Check for NULL.  This is largely a non-problem, since,
	if the allocation were to fail, we would have been in
	severe trouble long before reaching this point.

	( SR:8606171142 CR:JAGad40406 )
	There is a window in which it is possible to invalidate
	the drv_info_t structure while another process is
	using it.

	Resolution:
	Close the window by copying the drv_info_t information while
	the device switch table (and hence, the drv_info_t) is
	locked.

Enhancement:
	No (superseded patches contained enhancements)
	PHKL_29818:
		Enhancements were delivered in a patch this one has
		superseded.  Please review the Defect Description
		text for more information.

SR:
	8606137247 8606154498 8606162678 8606170779 8606171142
	8606231066 8606246033 8606320283

Patch Files:
	
	OS-Core.CORE-KRN,fr=B.11.11,fa=HP-UX_B.11.11_32/64,v=HP:
	/usr/conf/sys/mod_k.h

	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_32,v=HP:
	/usr/conf/lib/libdlkm-pdk.a(mod_objmd.o)
	/usr/conf/lib/libdlkm.a(modadm.o)
	/usr/conf/lib/libdlkm.a(modctl.o)
	/usr/conf/lib/libdlkm.a(modinit.o)
	/usr/conf/lib/libio.a(gio_modfuncs.o)

	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_64,v=HP:
	/usr/conf/lib/libdlkm-pdk.a(mod_objmd.o)
	/usr/conf/lib/libdlkm.a(modadm.o)
	/usr/conf/lib/libdlkm.a(modctl.o)
	/usr/conf/lib/libdlkm.a(modinit.o)
	/usr/conf/lib/libio.a(gio_modfuncs.o)

what(1) Output:
	
	OS-Core.CORE-KRN,fr=B.11.11,fa=HP-UX_B.11.11_32/64,v=HP:
	/usr/conf/sys/mod_k.h:
		mod_k.h $Date: 2002/03/17 12:35:27 $Revision: r11.11
			/2 PATCH_11.11 (PHKL_26425) */

	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_32,v=HP:
	/usr/conf/lib/libdlkm-pdk.a(mod_objmd.o):
		mod_objmd.c $Date: 2000/12/19 04:53:55 $Revision: r1
			1.11/1 PATCH_11.11 (PHKL_22994)
	/usr/conf/lib/libdlkm.a(modadm.o):
		modadm.c $Date: 2000/12/19 04:53:55 $Revision: r11.1
			1/1 PATCH_11.11 (PHKL_22994)
	/usr/conf/lib/libdlkm.a(modctl.o):
		modctl.c $Date: 2002/03/17 12:32:42 $Revision: r11.1
			1/3 PATCH_11.11 (PHKL_26425)
	/usr/conf/lib/libdlkm.a(modinit.o):
		modinit.c $Date: 2000/12/19 04:53:55 $Revision: r11.
			11/1 PATCH_11.11 (PHKL_22994)
	/usr/conf/lib/libio.a(gio_modfuncs.o):
		gio_modfuncs.c $Date: 2003/09/28 10:32:54 $Revision:
			 r11.11/2 PATCH_11.11 (PHKL_29818)

	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_64,v=HP:
	/usr/conf/lib/libdlkm-pdk.a(mod_objmd.o):
		mod_objmd.c $Date: 2000/12/19 04:53:55 $Revision: r1
			1.11/1 PATCH_11.11 (PHKL_22994)
	/usr/conf/lib/libdlkm.a(modadm.o):
		modadm.c $Date: 2000/12/19 04:53:55 $Revision: r11.1
			1/1 PATCH_11.11 (PHKL_22994)
	/usr/conf/lib/libdlkm.a(modctl.o):
		modctl.c $Date: 2002/03/17 12:32:42 $Revision: r11.1
			1/3 PATCH_11.11 (PHKL_26425)
	/usr/conf/lib/libdlkm.a(modinit.o):
		modinit.c $Date: 2000/12/19 04:53:55 $Revision: r11.
			11/1 PATCH_11.11 (PHKL_22994)
	/usr/conf/lib/libio.a(gio_modfuncs.o):
		gio_modfuncs.c $Date: 2003/09/28 10:32:54 $Revision:
			 r11.11/2 PATCH_11.11 (PHKL_29818)

cksum(1) Output:
	
	OS-Core.CORE-KRN,fr=B.11.11,fa=HP-UX_B.11.11_32/64,v=HP:
	3481709446 8664 /usr/conf/sys/mod_k.h

	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_32,v=HP:
	2400505575 13908 /usr/conf/lib/libdlkm-pdk.a(mod_objmd.o)
	3698964448 6256 /usr/conf/lib/libdlkm.a(modadm.o)
	2621666971 17664 /usr/conf/lib/libdlkm.a(modctl.o)
	1088591096 5508 /usr/conf/lib/libdlkm.a(modinit.o)
	85055806 10744 /usr/conf/lib/libio.a(gio_modfuncs.o)

	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_64,v=HP:
	847140765 30240 /usr/conf/lib/libdlkm-pdk.a(mod_objmd.o)
	2619584738 14672 /usr/conf/lib/libdlkm.a(modadm.o)
	181049780 40736 /usr/conf/lib/libdlkm.a(modctl.o)
	1167305104 11848 /usr/conf/lib/libdlkm.a(modinit.o)
	1843119575 27264 /usr/conf/lib/libio.a(gio_modfuncs.o)

Patch Conflicts: None

Patch Dependencies: None

Hardware Dependencies: None

Other Dependencies: None

Supersedes:
	PHKL_22994 PHKL_26425

Equivalent Patches: None

Patch Package Size: 110 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_29818

	5. Run swinstall to install the patch:

		swinstall -x autoreboot=true -x patch_match_target=true \
			  -s /tmp/PHKL_29818.depot

	By default swinstall will archive the original software in 
	/var/adm/sw/save/PHKL_29818.  If you do not wish to retain a
	copy of the original software, include the patch_save_files
	option in the swinstall command above:

		-x patch_save_files=false

	WARNING: If patch_save_files is false when a patch is installed,
		 the patch cannot be deinstalled.  Please be careful
		 when using this feature.

	For future reference, the contents of the PHKL_29818.text file is 
	available in the product readme:

		swlist -l product -a readme -d @ /tmp/PHKL_29818.depot

	To put this patch on a magnetic tape and install from the
	tape drive, use the command:

		dd if=/tmp/PHKL_29818.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions: None