Patch-ID# 114427-05

NOTE:
***********************************************************************
READ THE TERMS OF THE AGREEMENT ("AGREEMENT") IN THE LEGAL_LICENSE.TXT
FILE CAREFULLY BEFORE USING THIS SOFTWARE. BY USING THE SOFTWARE, YOU
AGREE TO THE TERMS OF THIS AGREEMENT. IF YOU DO NOT AGREE TO ALL OF THE
TERMS, PROMPTLY DESTROY THE UNUSED SOFTWARE.
***********************************************************************

Keywords: libumem userland slab allocator
Synopsis: SunOS 5.9_x86: libumem.so.1 patch
Date: Sep/14/2006


Install Requirements: NA                      
                      
Solaris Release: 9_x86

SunOS Release: 5.9_x86

Unbundled Product: 

Unbundled Release: 

Xref: This patch available for SPARC as patch 114370

Topic: SunOS 5.9_x86: libumem.so.1 patch

Relevant Architectures: i386

BugId's fixed with this patch: 4518988 4694626 4709984 4766343 4865797 4924624 4928859 5017315 5018265 6304072

Changes incorporated in this version: 6304072

Patches accumulated and obsoleted by this patch: 

Patches which conflict with this patch: 

Patches required with this patch: 113988-03 (or greater)

Obsoleted by: 

Files included with this patch: 

/usr/include/sys/vmem.h
/usr/include/sys/vmem_impl_user.h
/usr/include/umem.h
/usr/include/umem_impl.h
/usr/lib/libumem.so
/usr/lib/libumem.so.1

Problem Description:

6304072 libumem seems to use more heap than it needs
 
(from 114427-04)
 
4924624 running C++ executables with libumem and LD_BIND_NOW causes SIGSEGV
4865797 process_free() mis-identifies double-frees
5017315 libumem's atfork() handlers can deadlock
5018265 free()/realloc()/process_free() interface could be faster
 
(from 114427-03)
 
4928859 libumem.so -> libumem.so.1 symbolic link missing in 5.9
 
(from 114427-02)
 
4766343 assertion failure in umem's vmem_xalloc()
 
(from 114427-01)
 
4518988 We should ship libumem
4709984 findleaks warns about partial read failure
4694626 putenv calls realloc with locks held

Patch Installation Instructions:
--------------------------------
 
For Solaris 2.0-2.6 releases, refer to the Install.info file and/or
the README within the patch for instructions on using the generic
'installpatch' and 'backoutpatch' scripts provided with each patch.
 
For Solaris 7-10 releases, refer to the man pages for instructions
on using 'patchadd' and 'patchrm' scripts provided with Solaris.
Any other special or non-generic installation instructions should be
described below as special instructions.  The following example
installs a patch to a standalone machine:
 
       example# patchadd /var/spool/patch/104945-02
 
The following example removes a patch from a standalone system:
 
       example# patchrm 104945-02
 
For additional examples please see the appropriate man pages.

Special Install Instructions:
-----------------------------
 
NOTE:  To get the complete "umem: A Userland Slab Allocator" feature, please
       also install the following additional patches:
 
         114428-01 (or newer ) libumem; mdb components patch
         114429-01 (or newer ) llib-lumem patch
         114430-01 (or newer ) abi_libumem.so.1 patch

README -- Last modified date:  Thursday, September 14, 2006

