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Re: port-sparc64/38297: sparc64 smp panic: pmap_clear_reference(): 0xN still referenced!

The following reply was made to PR port-sparc64/38297; it has been noted by 

From: Havard Eidnes <>
Subject: Re: port-sparc64/38297: sparc64 smp panic: pmap_clear_reference():
 0xN still referenced!
Date: Wed, 23 Apr 2008 10:00:14 +0200 (CEST)

 did a re-test with latest self-built 4.99.60, and the problem
 still strikes:
 pmap_clear_reference(): 0x22e44b0 still referenced (pmap = 0x10d79010, ctx = 
 Stopped in pid 0.42 (system) at netbsd:cpu_Debugger+0x4:        nop
 db{2}: tra
 uvmpdpol_pagedeactivate(22e44b0, 128e400, 1524800, f9e4000, 18cfd98, f9e4000) 
at netbsd:uvmpdpol_pagedeactivate+0x90
 uvmpdpol_balancequeue(0, 1, 18cfd98, 18e9000, 101dfcc8, 0) at 
 uvm_pageout(432e3, 7dd66, 2a, 1d, 18cfc00, 0) at netbsd:uvm_pageout+0x414
 lwp_trampoline(f0075a4c, 0, 10fc00, fff7fd00, 10e9d8, fff7fe00) at 
 db{2}: show uvm
 Current UVM status:
   pagesize=8192 (0x2000), pagemask=0x1fff, pageshift=13
   515430 VM pages: 340803 active, 166312 inactive, 670 wired, 168 free
   pages  5432 anon, 500577 file, 1777 exec
   freemin=32, free-target=42, wired-max=171810
   faults=1041707, traps=495275, intrs=1798241, ctxswitch=1829096
   softint=565184, syscalls=1327912, swapins=112, swapouts=129
   fault counts:
     noram=0, noanon=0, pgwait=0, pgrele=0
     ok relocks(total)=238817(238817), anget(retrys)=128322(0), amapcopy=17381
     neighbor anon/obj pg=23067/580959, gets(lock/unlock)=422382/238817
     cases: anon=111553, anoncow=16737, obj=408216, prcopy=14165, przero=18594
   daemon and swap counts:
     woke=1742, revs=1742, scans=281627, obscans=275331, anscans=0
     busy=0, freed=275331, reactivate=532, deactivate=447940
     pageouts=0, pending=0, nswget=0
     nswapdev=1, swpgavail=640242
     swpages=640242, swpginuse=0, swpgonly=0, paging=0
 db{2}: show page 0x22e44b0
 PAGE 0x22e44b0:
   flags=0, pqflags=2<ANON>, wire_count=0, pa=0x2207e000
   uobject=0x0, uanon=0x11299c00, offset=0x0 loan_count=0
   [page ownership tracking disabled]
 db{2}: show lock pmap_lock
 lock address : 0x000000000189fa68 type     :     sleep/adaptive
 shared holds :                  0 exclusive:                  1
 shares wanted:                  0 exclusive:                  1
 current cpu  :                  2 last held:                  2
 current lwp  : 0x000000000f9e4000 last held: 0x000000000f9e4000
 last locked  : 0x000000000144adf0 unlocked : 0x000000000144b098
 initialized  : 0x000000000144cc24
 owner field  : 0x000000000f9e4000 wait/spin:                0/0
 Turnstile chain at 0x18d5a80.
 => No active turnstile for this lock.
 - Havard

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