Date: Sun, 22 Feb 1998 16:05:11 -0500 (EST) From: "John S. Dyson" <toor@dyson.iquest.net> To: jonc@pinnacle.co.nz Cc: grog@lemis.com, mmead@calvin.math.vt.edu, questions@FreeBSD.ORG Subject: Re: new 2.2.5 installation randomly (and constantly) panics Message-ID: <199802222105.QAA02841@dyson.iquest.net> In-Reply-To: <Pine.SGI.3.96.980223090431.10096D-100000@tui.pinnacle.co.nz> from Jonathan Chen at "Feb 23, 98 09:07:30 am"
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I am chimeing in on Jonathan's info:
The below patch is mandatory, and your 2.2.5 system will most likely have
problems if you don't apply it!!!! :-(. 2.2.6 should be already fixed.
Jonathan Chen said:
> On Sun, 22 Feb 1998, Greg Lehey wrote:
>
> [snip]
> >
> > Ugh. A VM problem. Does this always look the same? The important
> > part of this dump are the frames 11 (i586_copyin) to 5
> > (vm_pager_has_page). Possibly frames 14 to 12 are also of importance.
> >
> > >>> Additionally, is there something I might not know about with 2.2.5
> > >>> that could be causing this? Help! Thanks!
>
> There's a patch for the vm which John Dyson posted here some time ago,
> try applying that as well...
> --
> Jonathan Chen <jonc@pinnacle.co.nz>
> ---------------------------------------------------------------------
> When all other forms of communication fail, use words
>
> -----------------------------------------------------------------------
> Anyone with any problems on 2.2.5 should probably apply the patch below
> (it might be backwards -- otherwise it is correct.)
>
>
> Index: sys/vm/vm_page.c
> ===================================================================
> RCS file: /local/home/ncvs/src/sys/vm/vm_page.c,v
> retrieving revision 1.69.2.3
> retrieving revision 1.69.2.5
> diff -C4 -r1.69.2.3 -r1.69.2.5
> *** vm_page.c 1997/03/25 04:54:35 1.69.2.3
> --- vm_page.c 1997/11/06 04:33:01 1.69.2.5
> ***************
> *** 33,41 ****
> * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
> * SUCH DAMAGE.
> *
> * from: @(#)vm_page.c 7.4 (Berkeley) 5/7/91
> ! * $Id: vm_page.c,v 1.69.2.3 1997/03/25 04:54:35 dyson Exp $
> */
>
> /*
> * Copyright (c) 1987, 1990 Carnegie-Mellon University.
> --- 33,41 ----
> * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
> * SUCH DAMAGE.
> *
> * from: @(#)vm_page.c 7.4 (Berkeley) 5/7/91
> ! * $Id: vm_page.c,v 1.69.2.5 1997/11/06 04:33:01 dyson Exp $
> */
>
> /*
> * Copyright (c) 1987, 1990 Carnegie-Mellon University.
> ***************
> *** 576,584 ****
> pq = &vm_page_queues[queue];
> TAILQ_REMOVE(pq->pl, m, pageq);
> --(*pq->cnt);
> --(*pq->lcnt);
> ! if ((m->queue - m->pc) == PQ_CACHE) {
> if ((cnt.v_cache_count + cnt.v_free_count) <
> (cnt.v_free_reserved + cnt.v_cache_min))
> pagedaemon_wakeup();
> }
> --- 576,584 ----
> pq = &vm_page_queues[queue];
> TAILQ_REMOVE(pq->pl, m, pageq);
> --(*pq->cnt);
> --(*pq->lcnt);
> ! if ((queue - m->pc) == PQ_CACHE) {
> if ((cnt.v_cache_count + cnt.v_free_count) <
> (cnt.v_free_reserved + cnt.v_cache_min))
> pagedaemon_wakeup();
> }
> ***************
> *** 599,607 ****
> int hindex;
>
> for(j = 0; j < PQ_L1_SIZE; j++) {
> for(i = (PQ_L2_SIZE/2) - (PQ_L1_SIZE - 1);
> ! i >= 0;
> i -= PQ_L1_SIZE) {
> hindex = (index + (i+j)) & PQ_L2_MASK;
> m = TAILQ_FIRST(vm_page_queues[basequeue + hindex].pl);
> if (m)
> --- 599,607 ----
> int hindex;
>
> for(j = 0; j < PQ_L1_SIZE; j++) {
> for(i = (PQ_L2_SIZE/2) - (PQ_L1_SIZE - 1);
> ! (i+j) >= 0;
> i -= PQ_L1_SIZE) {
> hindex = (index + (i+j)) & PQ_L2_MASK;
> m = TAILQ_FIRST(vm_page_queues[basequeue + hindex].pl);
> if (m)
>
> --
> John
> dyson@freebsd.org
> jdyson@nc.com
>
>
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--
John | Never try to teach a pig to sing,
dyson@freebsd.org | it just makes you look stupid,
jdyson@nc.com | and it irritates the pig.
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