Patch Name: PHNE_25075

Patch Description: s700_800 11.04 (VVOS) Streams Pty cumulative patch

Creation Date: 01/10/09

Post Date:  01/10/22

Hardware Platforms - OS Releases:
	s700: 11.04
	s800: 11.04

Products: N/A

Filesets:
	Streams-TIO.STRTIO2-KRN,fr=B.11.04,fa=HP-UX_B.11.04_32,v=HP
	Streams-TIO.STRTIO2-KRN,fr=B.11.04,fa=HP-UX_B.11.04_64,v=HP
	Streams-TIO.STRTIO-KRN,fr=B.11.04,fa=HP-UX_B.11.04_32/64,v=HP
	OS-Core.CORE2-KRN,fr=B.11.04,fa=HP-UX_B.11.04_32,v=HP
	OS-Core.CORE2-KRN,fr=B.11.04,fa=HP-UX_B.11.04_64,v=HP

Automatic Reboot?: Yes

Status: General Release

Critical:
	Yes
	PHNE_25075: PANIC
		Based on HP-UX Patch PHNE_25385:  PANIC
		Based on HP-UX Patch PHNE_24100:  PANIC
	PHNE_22824: PANIC MEMORY_LEAK HANG
		Based on HP-UX Patch PHNE_22086:  MEMORY_LEAK
		Based on HP-UX Patch PHNE_21433:  PANIC HANG
	PHNE_21203: MEMORY_LEAK
		Based on HP-UX Patch PHNE_19616:  MEMORY_LEAK
	PHNE_19242: PANIC
		Based on HP-UX Patch PHNE_18878:  PANIC

Category Tags:
	defect_repair enhancement general_release critical panic
	halts_system memory_leak

Path Name: /hp-ux_patches/s700_800/11.X/PHNE_25075

Symptoms:
	PHNE_25075:
	Repackaged HP-UX patch PHNE_25385 for VVOS

	Based on HP-UX patch PHNE_25385:
	System panics in ldtty_intimeout: the message is
	panic in ldtty_intimeout+0x18

	Based on HP-UX patch PHNE_24100:
	System panics in ldtty_intimeout: the message is
	panic in ldtty_intimeout+0x18 : an ldtty timer deferenced a
	closed queue

	PHNE_22824:
	Repackaged HP-UX patch PHNE_22086 for VVOS

	Based on HP-UX patch PHNE_22086:
	System hangs due to memory starvation when using pckt
	module.

	Based on HP-UX patch PHNE_21433:
	1) System hangs during shutdown.
	2) System panic when an application is transfering large
	amount of data under raw mode.

	PHNE_21203:
	Repackaged HP-UX patch PHNE_20094 for VVOS

	Based on HP-UX patch PHNE_20094:
	When 32bit user application on 64bit platform uses getmsg()
	on Streams Pty, a 64bit data structure is returned instead
	of expected 32bit data structure.

	Based on HP-UX patch PHNE_19616:
	1) Streams pty causes memory leak when end-user does not
	follow the operation procedure of master/slave pair.
	2) Streams pty in UP Emulation mode leads worse performance
	to applicatons based on Streams Pty, such as rlogind.
	3) System winds-down to what appears to be a complete
	system hang.

	PHNE_19242:
	Repackaged HP-UX patch PHNE_18878 for VVOS

	Based on HP-UX patch PHNE_18878:
	Streams pty will panic under race conditions between
	master and slave drivers on MP systems.

	Based on HP-UX patch PHNE_14976:
	Streams pty did not work in UTF8 environment. This patch is
	an enhancement that provides UTF8 support

	Based on HP-UX patch PHNE_16155:
	System panic type 15 in pckt_rsrv in the Streams pty code.

Defect Description:
	PHNE_25075:
	Repackaged HP-UX patch PHNE_25385 for VVOS

	Based on HP-UX patch PHNE_25385:
	Race window between ldtty_close and ldtty_intimeout

	Based on HP-UX patch PHNE_24100:
	A timer was left active after a close.

	PHNE_22824:
	Repackaged HP-UX patch PHNE_22086 for VVOS

	Based on HP-UX patch PHNE_22086:
	Memory leak when processing M_FLUSHR message in pckt module.

	Resolution:
	Free the undeallocated message used in processing M_FLUSHR
	message in pckt module.

	Based on HP-UX patch PHNE_21433:
	1) Application may hang in ldtty close if there is some
	data inside ldtty module to drain. Shutdown thread is
	blocked and hangs when it tries to access the driver
	under ldtty module.
	2) Race condition in ldtty module causes ldtty_sendraw
	to reuse a message block that has already been freed.

	Resolution:
	1) Inside ldtty close routine, we add a call to service
	routine to drain outstanding data.
	2) When a possible race condition is detected, ldtty_sendraw
	makes sure that it won't use the old message buffer which
	may have already been freed.

	PHNE_21203:
	Repackaged HP-UX patch PHNE_20094 for VVOS

	Based on HP-UX patch PHNE_20094:
	When transparent ioctl is called, a M_IOCTL message is
	forwarded to Streams Pty master side. The first message
	block of M_IOCTL message, which contains iocblk data
	structure, is of different size on 32 and 64bit platform.

	Resolution:
	Add a register function in ptm driver. At STH, when a 32bit
	application is detected on 64bit platform, the registered
	function is called to convert 64bit iocblk data structure
	to 32bit in M_IOCTL msg.

	Based on HP-UX patch PHNE_19616:
	1) When the slave driver is opened before the master driver,
	a preallocated message block (eof_msg_mp) is not freed
	before return error code.
	2) UP Emulation mode of Streams Pty Driver binds Streams
	Pty based applications to monarch processor and causes
	performance problem.
	3) High priority messages are queued in PCKT module by
	mistake. When this message are not processed in time,
	the module begins consuming huge memory.

	Resolution:
	1) Check existence of master driver as soon as we try to
	open slave driver. Allocate eof_msg_mp only if master is
	already opened.
	2) Streams Pty module now runs at QueuePair sync level,
	using shared/exclusive lock to protect critical data
	structure shared among master/slave drivers.
	3) Process high priority msg in pckt_rput() function.

	PHNE_19242:
	Repackaged HP-UX patch PHNE_18878 for VVOS

	Based on HP-UX patch PHNE_18878:
	The panic was caused by the master and slave drivers running
	on different processors and trying to access the same
	data structure.

	Resolution:
	The fix was to mutually exclude the master and slave drivers
	so that they cannot run at the same time and thus avoid the
	race condition.

	Based on HP-UX patch PHNE_14976:
	This patch is an enhancement for UTF8 support for STREAMS
	pty line discipline.

	Based on HP-UX patch PHNE_16155:
	The type 15 panic was caused the b_rptr pointer in the
	mblk being overwritten by a bad value when M_FLUSH was
	being processed and the system ran out of memory.

SR:
	8606207776 4701402487 4701402693 5003429548 5003448738
	5003427641 8606103315 8606128396 8606134024 8606152552
	8606187489

Patch Files:
	
	Streams-TIO.STRTIO2-KRN,fr=B.11.04,fa=HP-UX_B.11.04_32,v=HP:
	/usr/conf/lib/libstrtio.a

	Streams-TIO.STRTIO2-KRN,fr=B.11.04,fa=HP-UX_B.11.04_64,v=HP:
	/usr/conf/lib/libstrtio.a

	Streams-TIO.STRTIO-KRN,fr=B.11.04,fa=HP-UX_B.11.04_32/64,
		v=HP:
	/usr/conf/strtio/pty.h
	/usr/include/sys/eucioctl.h

	OS-Core.CORE2-KRN,fr=B.11.04,fa=HP-UX_B.11.04_32,v=HP:
	/usr/conf/lib/libhp-ux.a(strtio.o)

	OS-Core.CORE2-KRN,fr=B.11.04,fa=HP-UX_B.11.04_64,v=HP:
	/usr/conf/lib/libhp-ux.a(strtio.o)

what(1) Output:
	
	Streams-TIO.STRTIO2-KRN,fr=B.11.04,fa=HP-UX_B.11.04_32,v=HP:
	/usr/conf/lib/libstrtio.a:
		PATCH_11.00: pty.o  1.6.118.4  00/03/29  PHNE_21433
		PATCH_11.00: pckt.o  1.4.118.5  00/07/25  PHNE_22086
		PATCH_11.00: ldtty_euc.o 1.5.118.2  98/05/08  PHNE_1
			4976
		ldtty.c $Date: 2001/09/26 13:36:18 $Revision: r11ros
			/10 PATCH_11.00 (PHNE_25385)

	Streams-TIO.STRTIO2-KRN,fr=B.11.04,fa=HP-UX_B.11.04_64,v=HP:
	/usr/conf/lib/libstrtio.a:
		PATCH_11.00: pty.o  1.6.118.4  00/03/29  PHNE_21433
		PATCH_11.00: pckt.o  1.4.118.5  00/07/25  PHNE_22086
		PATCH_11.00: ldtty_euc.o 1.5.118.2  98/05/08  PHNE_1
			4976
		ldtty.c $Date: 2001/09/26 13:36:18 $Revision: r11ros
			/10 PATCH_11.00 (PHNE_25385)

	Streams-TIO.STRTIO-KRN,fr=B.11.04,fa=HP-UX_B.11.04_32/64,
		v=HP:
	/usr/conf/strtio/pty.h:
		None
	/usr/include/sys/eucioctl.h:
		eucioctl.h 1.1 8/31/90

	OS-Core.CORE2-KRN,fr=B.11.04,fa=HP-UX_B.11.04_32,v=HP:
	/usr/conf/lib/libhp-ux.a(strtio.o):
		None

	OS-Core.CORE2-KRN,fr=B.11.04,fa=HP-UX_B.11.04_64,v=HP:
	/usr/conf/lib/libhp-ux.a(strtio.o):
		None

cksum(1) Output:
	
	Streams-TIO.STRTIO2-KRN,fr=B.11.04,fa=HP-UX_B.11.04_32,v=HP:
	2259497368 90956 /usr/conf/lib/libstrtio.a

	Streams-TIO.STRTIO2-KRN,fr=B.11.04,fa=HP-UX_B.11.04_64,v=HP:
	4103956710 195422 /usr/conf/lib/libstrtio.a

	Streams-TIO.STRTIO-KRN,fr=B.11.04,fa=HP-UX_B.11.04_32/64,
		v=HP:
	1608656746 15146 /usr/conf/strtio/pty.h
	3341160391 2931 /usr/include/sys/eucioctl.h

	OS-Core.CORE2-KRN,fr=B.11.04,fa=HP-UX_B.11.04_32,v=HP:
	1147625056 86052 /usr/conf/lib/libhp-ux.a(strtio.o)

	OS-Core.CORE2-KRN,fr=B.11.04,fa=HP-UX_B.11.04_64,v=HP:
	3295844886 105712 /usr/conf/lib/libhp-ux.a(strtio.o)

Patch Conflicts: None

Patch Dependencies: None

Hardware Dependencies: None

Other Dependencies: None

Supersedes:
	PHNE_19242 PHNE_21203 PHNE_22824

Equivalent Patches:
	PHNE_25385:
	s700: 11.00
	s800: 11.00

Patch Package Size: 530 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 PHNE_25075

	5. Run swinstall to install the patch:

		swinstall -x autoreboot=true -x patch_match_target=true \
			  -s /tmp/PHNE_25075.depot

	By default swinstall will archive the original software in 
	/var/adm/sw/save/PHNE_25075.  If you do not wish to retain a
	copy of the original software, use the patch_save_files option:

		swinstall -x autoreboot=true -x patch_match_target=true \
			  -x patch_save_files=false -s /tmp/PHNE_25075.depot

	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 PHNE_25075.text file is 
	available in the product readme:

		swlist -l product -a readme -d @ /tmp/PHNE_25075.depot

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

		dd if=/tmp/PHNE_25075.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions: None