Re: BUG at rmap.c:212

Petr Vandrovec (VANDROVE@vc.cvut.cz)
Wed, 31 Jul 2002 16:00:20 +0200

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Maybe in reply to: Petr Vandrovec: "BUG at rmap.c:212"
Next in thread: Andrew Morton: "Re: BUG at rmap.c:212"

On 31 Jul 02 at 10:11, Rik van Riel wrote:
> On Wed, 31 Jul 2002, Petr Vandrovec wrote:
>
> > > Line 212 is 'pte_chain_unlock(page);' right ?
> >
> > Nope. On my system (2.5.29-changeset548) it is a BUG() call which was
> > added by akpm in rmap.c revision 1.5, in his 'Add BUG() on a can't-happen
> > code path in page_remove_rmap()'. It just added #else BUG() branch
> > to #ifdef DEBUG_RMAP conditional.
>
> > Probably because of your code did not do anything special when
> > 'Not found. This should NEVER happen!' code path triggers.
> Of course, ntpd is probably running into a different problem,
> but the printk's enabled with DEBUG_RMAP should give us some
> hints.

No nvidia here. Boot, start X, quit X, run updatedb, reboot...
cat /proc/`pidof ntpd`/maps says that it has mmaped only ntpd and
few libraries from /lib. I hope that printed values will have
some value for you. And btw, ntpd uses some mlock*() call, it has status
'SL' in process list. Do you know how to find what memory it has locked?

Jul 31 15:38:13 vana sshd[1303]: Received signal 15; terminating.
Jul 31 15:38:13 vana ntpd[1326]: ntpd exiting on signal 15
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893098 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc89309c not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc8930a0 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc8930a4 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana wwwoffled[1311]: Exit signalled.
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893100 not present.
Jul 31 15:38:13 vana wwwoffled[1311]: Exiting.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893228 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc89322c not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893230 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893234 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found: dbbde210 dadfe210
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893238 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc89323c not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893240 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893260 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found: dec759c4
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc8932d4 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893310 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found: db27f1e8 dbbde2ec dadfe2ec
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893314 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found: db27f1ec dbbde2f0 dadfe2f0
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc89331c not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found: db27f1f4
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893380 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893438 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc89343c not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found: dbbde418 dadfe418
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893448 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found: dbbde424 dadfe424
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc8934b0 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc8934c0 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc8934d0 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found: dbbde4ac dadfe4ac
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc8934d4 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found: dbbde4b0 dadfe4b0 dfc5c3ac cddaf3ac d418c3ac ca9353ac c559a3ac
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc8934ec not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found: dbbde4c8 dadfe4c8
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893520 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893528 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc89353c not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893550 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893554 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893558 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893560 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893568 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc89356c not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893570 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893574 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc89358c not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found: dbbde568 dadfe568
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893590 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found: dfc5c468
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893594 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found: dfc5c46c
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893604 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found: dbbde5e0 dadfe5e0 dfc5c4dc
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893630 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found: dbbde098 dadfe098
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893634 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found: dbbde09c dadfe09c
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893638 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found: dbbde0a0 dadfe0a0
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc89363c not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found: dbbde0a4 dadfe0a4
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893640 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found: dbbde0a8 dadfe0a8
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893644 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found: dbbde0ac dadfe0ac
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893648 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found: dbbde0b0 dadfe0b0
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc89364c not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found: dbbde0b4 dadfe0b4
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893650 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found: dbbde0b8 dadfe0b8
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893654 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found: dbbde0bc dadfe0bc
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc893658 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found: dbbde0c0 dadfe0c0
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc89365c not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found: dbbde0c4 dadfe0c4
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc8936b0 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc8936c8 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc8936cc not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc8936e0 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc8936e8 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found: dbbde150 dadfe150
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc8936f0 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:13 vana kernel: page_remove_rmap: pte_chain dc8936f4 not present.
Jul 31 15:38:13 vana kernel: page_remove_rmap: only found:
Jul 31 15:38:13 vana kernel: page_remove_rmap: driver cleared PG_reserved ?
Jul 31 15:38:15 vana kernel: Kernel logging (proc) stopped.
Jul 31 15:38:15 vana kernel: Kernel log daemon terminating.

Petr Vandrovec
vandrove@vc.cvut.cz

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Next message: Bill Rugolsky Jr.: "extended integer types (was Re: [patch] Input cleanups for 2.5.29 [2/2])"
Previous message: David Luyer: "RE: Linux 2.4.19ac3rc3 on IBM x330/x340 SMP - "ps" time skew"
Maybe in reply to: Petr Vandrovec: "BUG at rmap.c:212"
Next in thread: Andrew Morton: "Re: BUG at rmap.c:212"