Patch Name: PHKL_29911

Patch Description: s700_800 11.11 Improper core file mesg, corrupt core file

Creation Date: 03/10/23

Post Date: 03/11/03

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

Products: N/A

Filesets:
	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_29911: ABORT CORRUPTION

Category Tags:
	defect_repair general_release critical halts_system
	corruption

Path Name: /hp-ux_patches/s700_800/11.X/PHKL_29911

Symptoms:
	PHKL_29911:
	( SR:8606322732 CR:JAGae85199 )
	Programs which use the mmap(2) interface to map file data as
	MAP_PRIVATE into process address space may generate unusable
	core files and abort. This happens if the file size is less
	than the size specified to mmap(2) at the time of process
	termination.

	PHKL_23423:
	( SR:8606125716 CR:JAGac42595 )
	If the user already has the core file size configured as
	zero, and tries to dump a core, he will not get the core
	file dumped, but the shell will display incorrect msg:

	Abort(coredump)

	This is incorrect result.  In this case, the shell should
	not display (coredump), it should display:

	Abort

Defect Description:
	PHKL_29911:
	( SR:8606322732 CR:JAGae85199 )
	mmap(2) region larger than file size causes corrupt core
	files since pages in this region are not valid, but are
	referenced in the core dump path.

	Resolution:
	Dump the MAP_PRIVATE region only up to the size of file
	mapped irrespective of the mmap(2) mapping size.

	PHKL_23423:
	( SR:8606125716 CR:JAGac42595 )
	In the function core(), the incorrect return code '0' is
	returned if the core size is zero.  The calling function
	psig() interprets the return code '0' as successful core
	dump.  This is why the wrong message is displayed.

	Resolution:
	In the function core(), it now returns EACCES when the core
	size is zero.

Enhancement:
	No

SR:
	8606125716 8606322732

Patch Files:
	
	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_32,v=HP:
	/usr/conf/lib/libvm.a(vm_core.o)
	/usr/conf/lib/libvm.a(vm_elf.o)
	/usr/conf/lib/libvm.a(vm_pa32core.o)

	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_64,v=HP:
	/usr/conf/lib/libvm.a(vm_core.o)
	/usr/conf/lib/libvm.a(vm_elf.o)
	/usr/conf/lib/libvm.a(vm_pa32core.o)

what(1) Output:
	
	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_32,v=HP:
	/usr/conf/lib/libvm.a(vm_core.o):
		vm_core.c $Date: 2003/10/13 23:42:09 $Revision: r11.
			11/2 PATCH_11.11 (PHKL_29911)
	/usr/conf/lib/libvm.a(vm_elf.o):
		vm_elf.c $Date: 2003/10/13 23:42:09 $Revision: r11.1
			1/1 PATCH_11.11 (PHKL_29911)
	/usr/conf/lib/libvm.a(vm_pa32core.o):
		vm_pa32core.c $Date: 2003/10/13 23:42:09 $Revision: 
			r11.11/1 PATCH_11.11 (PHKL_29911)

	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_64,v=HP:
	/usr/conf/lib/libvm.a(vm_core.o):
		vm_core.c $Date: 2003/10/13 23:42:09 $Revision: r11.
			11/2 PATCH_11.11 (PHKL_29911)
	/usr/conf/lib/libvm.a(vm_elf.o):
		vm_elf.c $Date: 2003/10/13 23:42:09 $Revision: r11.1
			1/1 PATCH_11.11 (PHKL_29911)
	/usr/conf/lib/libvm.a(vm_pa32core.o):
		vm_pa32core.c $Date: 2003/10/13 23:42:09 $Revision: 
			r11.11/1 PATCH_11.11 (PHKL_29911)

cksum(1) Output:
	
	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_32,v=HP:
	3494766394 5664 /usr/conf/lib/libvm.a(vm_core.o)
	1375996348 8572 /usr/conf/lib/libvm.a(vm_elf.o)
	131529765 3656 /usr/conf/lib/libvm.a(vm_pa32core.o)

	OS-Core.CORE2-KRN,fr=B.11.11,fa=HP-UX_B.11.11_64,v=HP:
	1089867759 11912 /usr/conf/lib/libvm.a(vm_core.o)
	251596320 15496 /usr/conf/lib/libvm.a(vm_elf.o)
	2011756157 8568 /usr/conf/lib/libvm.a(vm_pa32core.o)

Patch Conflicts: None

Patch Dependencies: None

Hardware Dependencies: None

Other Dependencies: None

Supersedes:
	PHKL_23423 

Equivalent Patches: None

Patch Package Size: 50 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_29911

	5. Run swinstall to install the patch:

		swinstall -x autoreboot=true -x patch_match_target=true \
			  -s /tmp/PHKL_29911.depot

	By default swinstall will archive the original software in 
	/var/adm/sw/save/PHKL_29911.  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_29911.text file is 
	available in the product readme:

		swlist -l product -a readme -d @ /tmp/PHKL_29911.depot

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

		dd if=/tmp/PHKL_29911.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions: None