Date: Wed, 28 Jul 2010 15:36:12 +0000 (UTC) From: Matthew D Fleming <mdf@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/amd64/conf GENERIC src/sys/conf NOTES options src/sys/i386/conf GENERIC src/sys/ia64/conf GENERIC src/sys/kern kern_malloc.c src/sys/pc98/conf GENERIC src/sys/powerpc/conf GENERIC src/sys/sparc64/conf GENERIC src/sys/sun4v/conf GENERIC ... Message-ID: <201007281537.o6SFbbsd072875@repoman.freebsd.org>
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mdf 2010-07-28 15:36:12 UTC
FreeBSD src repository
Modified files:
sys/amd64/conf GENERIC
sys/conf NOTES options
sys/i386/conf GENERIC
sys/ia64/conf GENERIC
sys/kern kern_malloc.c
sys/pc98/conf GENERIC
sys/powerpc/conf GENERIC
sys/sparc64/conf GENERIC
sys/sun4v/conf GENERIC
sys/sys malloc.h
Log:
SVN rev 210564 on 2010-07-28 15:36:12Z by mdf
Add MALLOC_DEBUG_MAXZONES debug malloc(9) option to use multiple uma
zones for each malloc bucket size. The purpose is to isolate
different malloc types into hash classes, so that any buffer overruns
or use-after-free will usually only affect memory from malloc types in
that hash class. This is purely a debugging tool; by varying the hash
function and tracking which hash class was corrupted, the intersection
of the hash classes from each instance will point to a single malloc
type that is being misused. At this point inspection or memguard(9)
can be used to catch the offending code.
Add MALLOC_DEBUG_MAXZONES=8 to -current GENERIC configuration files.
The suggestion to have this on by default came from Kostik Belousov on
-arch.
This code is based on work by Ron Steinke at Isilon Systems.
Reviewed by: -arch (mostly silence)
Reviewed by: zml
Approved by: zml (mentor)
Revision Changes Path
1.546 +1 -0 src/sys/amd64/conf/GENERIC
1.1588 +14 -0 src/sys/conf/NOTES
1.706 +1 -0 src/sys/conf/options
1.533 +1 -0 src/sys/i386/conf/GENERIC
1.116 +1 -0 src/sys/ia64/conf/GENERIC
1.174 +124 -24 src/sys/kern/kern_malloc.c
1.333 +1 -0 src/sys/pc98/conf/GENERIC
1.106 +1 -0 src/sys/powerpc/conf/GENERIC
1.170 +1 -0 src/sys/sparc64/conf/GENERIC
1.38 +1 -0 src/sys/sun4v/conf/GENERIC
1.90 +1 -0 src/sys/sys/malloc.h
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