cvs commit: src/sys/kern vfs_bio.c

Jung-uk Kim jkim at FreeBSD.org
Thu Sep 29 09:37:34 PDT 2005


On Thursday 29 September 2005 12:33 pm, Kris Kennaway wrote:
> On Thu, Sep 29, 2005 at 12:00:26PM -0400, Jung-uk Kim wrote:
> > On Thursday 29 September 2005 09:03 am, Pawel Jakub Dawidek wrote:
> > > On Thu, Sep 29, 2005 at 10:37:20AM +0000, Peter Edwards wrote:
> > > +> peadar      2005-09-29 10:37:20 UTC
> > > +>
> > > +>   FreeBSD src repository
> > > +>
> > > +>   Modified files:
> > > +>     sys/kern             vfs_bio.c
> > > +>   Log:
> > > +>   Close a race in biodone(), whereby the bio_done field of
> > > the passed +>   bio may have been freed and reassigned by the
> > > wakeup before being +>   tested after releasing the bdonelock.
> > > +>
> > > +>   There's a non-zero chance this is the cause of a few of
> > > the crashes +>   knocking around with biodone() sitting in the
> > > stack backtrace.
> > >
> > > Should this fix the panic on boot in vmware?
> >
> > I thought that might be it, too.  I tried it with 6.0-BETA5 on
> > QEMU but no change. :-(
>
> This patch is not part of 6.0-BETA5.

I meant 6.0-BETA5 with patched kernel, of course.  I am sorry about 
the confusion.

Jung-uk Kim

> Kris


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