Re: Current kernel with http://gnats.netbsd.org/39965 and pmap patches

On Fri, Dec 19, 2008 at 2:47 PM, Izumi Tsutsui <[email protected]> wrote:
> [email protected] wrote:
>
>> I tried kernel with m68k/m68k/pmap_motorola.c and it failed with 030 as well.
>> Kernel prints following error:
>> panic: pool_put: buf8k: page header missing.
>
> Such pool panic generally happens on memory corruptions.
> Could you see any more info with options DIAGNOSTIC?

I fixed atari/dev/md_root.c which had problem with DIAGNOSTIC kernel (stopped
at assertion: bp->b_refcnt > 0). Funny thing is that problem seems to be
root cause for 68030 cpu installation panics and it no longer exist with fixed
/atari/dev/md_root.c. I'm no longer wondering why kernel panicked only with
installation :)

Here's links to patched ATARITT and FALCON kernels:
http://koti.welho.com/tmakinen/atari/netbsd-current-ATARITT-20081220.gz
http://koti.welho.com/tmakinen/atari/netbsd-current-FALCON-20081220.gz

> BTW, is the LOCK errors described in PR 39965 gone with
> accounting idepth patch? If so we should apply the changes first.

I never experienced LOCK errors. Maybe David R. can verify if that problem
still exist ?

Index: ../dev/md_root.c
===================================================================
RCS file: /cvsroot/src/sys/arch/atari/dev/md_root.c,v
retrieving revision 1.26
diff -u -r1.26 md_root.c
--- ../dev/md_root.c	4 Nov 2008 17:08:45 -0000	1.26
+++ ../dev/md_root.c	20 Dec 2008 00:47:23 -0000
@@ -233,6 +233,7 @@
 		bp->b_bcount = rsp->chunk;
 		bp->b_data   = rsp->bufp;
 		bp->b_error  = 0;
+		bp->b_refcnt++;

 		/* Initiate read */
 		(*rsp->strat)(bp);
@@ -313,6 +314,7 @@
 		bp->b_bcount = min(rsp->chunk, nbyte);
 		bp->b_data   = buf;
 		bp->b_error  = 0;
+		bp->b_refcnt++;

 		/* Initiate read */
 		(*rsp->strat)(bp);

-Tuomo