kern/135882: memstat_kvm_malloc broken in 7.2-STABLE

[Mikolaj Golub]

>Number:         135882
>Category:       kern
>Synopsis:       memstat_kvm_malloc broken in 7.2-STABLE
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Jun 21 09:30:05 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator:     Mikolaj Golub
>Release:        
>Organization:
>Environment:
FreeBSD zhuzha.ua1 7.2-STABLE FreeBSD 7.2-STABLE #18: Wed Jun  3 14:28:49 EEST 2009     root at zhuzha.ua1:/usr/obj/usr/src/sys/DEBUG  i386

>Description:
memstat_kvm_malloc is broken in FreeBSD7. As a result vmstat -m does not work with crash dumps.

It has already been fixed in HEAD:

SVN rev 192148 on 2009-05-15 18:25:44Z by jhb

Update the KVM backend for malloc stats to catch up to the internal structure
BI change from the addition of DTrace malloc(9) probes.

Submitted by:	Ben Kelly  ben of wanderview dot com

I have tested this fix on 7.2-STABLE and it works well here too. So it would be nice to MFC this to FreeBSD7 as having kmalloc statistics form crashes is very useful sometimes.
>How-To-Repeat:
vmstat -m -M /dev/mem -N /boot/kernel/kernel

and compare with the output of

vmstat -m
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: