Patch Name: PHKL_19931

Patch Description: s700 10.26 JFS Corruption stack overflow panic dirty inval

Creation Date: 99/09/27

Post Date:  99/10/15

Hardware Platforms - OS Releases:
	s700: 10.26

Products: N/A

Filesets:
	JournalFS.VXFS-BASE-KRN

Automatic Reboot?: Yes

Status: General Release

Critical:
	Yes
	PHKL_19931: PANIC

Path Name: /hp-ux_patches/s700/10.X/PHKL_19931

Symptoms:
	PHKL_19931:
	Ported 10.20 patch PHKL_17518 to TOS.
	(PHKL_17518)
	SR: 4701413864 CR: JAGaa52714
	The system panics with a 'Dirty Inval' panic message when
	unmounting a large (greater than 128 Gigabyte) filesystem.

Defect Description:
	PHKL_19931:
	Ported 10.20 patch PHKL_17518 to TOS.
	(PHKL_17518)
	SR: 4701413864 CR: JAGaa52714
	vx_smap_flush() calls vx_getsmap() passing the map number
	as the second parameter while vx_getsmap() expects the
	allocation unit (AU) number.  This causes vx_smap_flush()
	to NOT wait on the B_DELWRI buffer for this map which
	will later cause the panic.
	Resolution:
	Pass in an Allocation Unit number rather than a map
	number to vx_getsmap() from vx_smap_flush().

SR:
	1653265041 4701413864 5003387019

Patch Files:
	/usr/conf/lib/libvxfs_base.a(vx_bitmaps.o)

what(1) Output:
	/usr/conf/lib/libvxfs_base.a(vx_bitmaps.o):
		99/09/23 kern/vxfs/vx_bitmaps.c, hpux, hpux_10.26, i
			c5dj Revision 1.6 PATCH_10.26 (PHKL_19931) U
			NMODIFIED

cksum(1) Output:
	3838877198 13628 /usr/conf/lib/libvxfs_base.a(vx_bitmaps.o)

Patch Conflicts: None

Patch Dependencies: None

Hardware Dependencies: None

Other Dependencies: None

Supersedes: None

Equivalent Patches:
	PHKL_19932:
	s800: 10.26

	PHKL_17518:
	s700: 10.20

	PHKL_17519:
	s800: 10.20

Patch Package Size: 70 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_19931

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

		swinstall -x autoreboot=true -x match_target=true \
			-s /tmp/PHKL_19931.depot

	By default swinstall will archive the original software in
	/var/adm/sw/patch/PHKL_19931.  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_19931.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_19931.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions: None