Matthew D Fleming d7854da193 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)		2010-07-28 15:36:12 +00:00
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.cvsignore
DEFAULTS	Use io(4) for I/O port access on ia64, rather than through sysarch(2).	2010-01-11 18:10:13 +00:00
GENERIC	Add MALLOC_DEBUG_MAXZONES debug malloc(9) option to use multiple uma	2010-07-28 15:36:12 +00:00
GENERIC.hints
Makefile	In sys/<arch>/conf/Makefile set TARGET to <arch>. That allows	2010-01-08 18:57:31 +00:00
NOTES	Provide groundwork for 32-bit binary compatibility on non-x86 platforms,	2010-03-11 14:49:06 +00:00
SKI