freebsd-dev/sys/pc98
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
..
apm Rename from apm_bioscall.s to apm_bioscall.S for removing a special rule 2005-04-20 12:28:20 +00:00
cbus Unify pc98 event timer code with the rest of x86. 2010-07-13 06:57:27 +00:00
compile
conf Add MALLOC_DEBUG_MAXZONES debug malloc(9) option to use multiple uma 2010-07-28 15:36:12 +00:00
include Remove the support for int13 FPU exception reporting on i386. It is 2010-06-23 11:12:58 +00:00
linux Add reach-over include files to read i386/foo.h. In time, the pc98 2005-04-01 23:19:43 +00:00
pc98 Store fsbase and gsbase in the right fields of the mcontext. They were 2010-07-20 12:36:36 +00:00