Re: crash in tmpfs_itimes since vmlocking2 merge

[Antti Kantee <pooka%cs.hut.fi@localhost>]

On Mon Jan 21 2008 at 23:50:20 +0200, Antti Kantee wrote:
> > /dev/wd0a on / type ffs (read-only, local)
> > tmpfs on /dev type tmpfs (union, local)
> >
> > [snip]
> > 
> > unmounting /dev (tmpfs)...
> > 
> > unmounting / (/dev/wd0a)...uvm_fault(0xc0398760, 0xc6984000, 1) -> 0xe
> > 
> > kernel: supervisor trap page fault, code=0
> 
> You are trying to modify the vnode for /dev/wd0a to update the access time
> info, but tmpfs has been garbage collected already when unmounting /dev.

Below is a larger quote from the original mail to show I'm not
hallucinating with my analysis ;)

> unmounting /dev (tmpfs)...
>
> unmounting / (/dev/wd0a)...uvm_fault(0xc0398760, 0xc6984000, 1) -> 0xe
>
> kernel: supervisor trap page fault, code=0
>
> Stopped in pid 6225.1 (reboot) at       netbsd:tmpfs_itimes+0x2e:       testb
  $
>
> 0xe,0x14(%ebx)
>
> db> bt
>
> tmpfs_itimes(c56d8ed8,0,0,c56d8f6c,c56d8f64) at netbsd:tmpfs_itimes+0x2e

-- 
Antti Kantee <pooka%iki.fi@localhost>                     Of course he runs 
NetBSD
http://www.iki.fi/pooka/                          http://www.NetBSD.org/
    "la qualité la plus indispensable du cuisinier est l'exactitude"