Patch Name: PHKL_28966

Patch Description: s700_800 11.00 VxFS3.3 Data Page Fault in vx_multi_bufinval

Creation Date: 03/04/15

Post Date: 03/04/28

Hardware Platforms - OS Releases:
	s700: 11.00
	s800: 11.00

Products:
	JFS 3.3;

Filesets:
	JFS.JFS-BASE2-KRN,fr=3.3,fa=HP-UX_B.11.00_32,v=HP
	JFS.JFS-BASE2-KRN,fr=3.3,fa=HP-UX_B.11.00_64,v=HP

Automatic Reboot?: Yes

Status: General Release

Critical:
	Yes
	PHKL_28966: PANIC

Category Tags:
	defect_repair general_release critical panic

Path Name: /hp-ux_patches/s700_800/11.X/PHKL_28966

Symptoms:
	PHKL_28966:
	( SR:8606295053 CR:JAGae58750 )
	Data page fault occurs when accessing a buffer.  While the
	stack trace may vary, the following stack trace has been
	observed so far:

	panic+0x14
	report_trap_or_int_and_panic+0x84
	trap+0xd9c
	nokgdb+0x8
	vx_multi_bufinval+0x90
	vx_emtran_process+0xe0
	vx_dunemap+0x100
	vx_demap+0x14
	vx_trancommit2+0x6c
	vx_trancommit+0x420
	vx_rmdir1+0x5cc
	vx_rmdir+0x168
	vns_remove+0x10c
	vn_remove+0xa4
	rmdir+0x28
	syscall+0x6f8
	$syscallrtn+0x0

Defect Description:
	PHKL_28966:
	( SR:8606295053 CR:JAGae58750 )
	Certain fields in the buffer are modified after the buffer
	has been released.  This produces a race condition as the
	buffer may be re-used for other operations after it is
	released, and then the buffer fields are incorrectly
	modified.

	Resolution:
	The buffer fields are modified prior to the buffer being
	released.

Enhancement:
	No

SR:
	8606295053

Patch Files:
	
	JFS.JFS-BASE2-KRN,fr=3.3,fa=HP-UX_B.11.00_32,v=HP:
	/usr/conf/lib/libvxfs.a(vx33_bio.o)

	JFS.JFS-BASE2-KRN,fr=3.3,fa=HP-UX_B.11.00_64,v=HP:
	/usr/conf/lib/libvxfs.a(vx33_bio.o)

what(1) Output:
	
	JFS.JFS-BASE2-KRN,fr=3.3,fa=HP-UX_B.11.00_32,v=HP:
	/usr/conf/lib/libvxfs.a(vx33_bio.o):
		vx33_bio.c $Date: 2003/04/07 03:47:13 $Revision: r11
			ros/2 PATCH_11.00 (PHKL_28966)

	JFS.JFS-BASE2-KRN,fr=3.3,fa=HP-UX_B.11.00_64,v=HP:
	/usr/conf/lib/libvxfs.a(vx33_bio.o):
		vx33_bio.c $Date: 2003/04/07 03:47:13 $Revision: r11
			ros/2 PATCH_11.00 (PHKL_28966)

cksum(1) Output:
	
	JFS.JFS-BASE2-KRN,fr=3.3,fa=HP-UX_B.11.00_32,v=HP:
	3578621025 15764 /usr/conf/lib/libvxfs.a(vx33_bio.o)

	JFS.JFS-BASE2-KRN,fr=3.3,fa=HP-UX_B.11.00_64,v=HP:
	2629886073 37528 /usr/conf/lib/libvxfs.a(vx33_bio.o)

Patch Conflicts: None

Patch Dependencies: None

Hardware Dependencies: None

Other Dependencies: None

Supersedes: None

Equivalent Patches: None

Patch Package Size: 80 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_28966

	5. Run swinstall to install the patch:

		swinstall -x autoreboot=true -x patch_match_target=true \
			  -s /tmp/PHKL_28966.depot

	By default swinstall will archive the original software in 
	/var/adm/sw/save/PHKL_28966.  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_28966.text file is 
	available in the product readme:

		swlist -l product -a readme -d @ /tmp/PHKL_28966.depot

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

		dd if=/tmp/PHKL_28966.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions: None