lkml.org 
[lkml]   [2000]   [Dec]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: corruption
Jens Axboe wrote:
>
> On Fri, Dec 01 2000, Andrew Morton wrote:
> > Andrew Morton wrote:
> > >
> > > I bet this'll catch it:
> > >
> > > --- include/linux/list.h.orig Fri Dec 1 08:33:36 2000
> > > +++ include/linux/list.h Fri Dec 1 08:33:55 2000
> > > @@ -90,6 +90,7 @@
> > > static __inline__ void list_del(struct list_head *entry)
> > > {
> > > __list_del(entry->prev, entry->next);
> > > + entry->next = entry->prev = 0;
> > > }
> > >
> > > /**
> > >
> > > First person to send a ksymoops trace gets a cookie.
> >
> > mmmm... choc-chip.
> >
> > With the above patch applied the machine crashed after an hour. Crashed
> > a second time during the e2fsck. gdb backtrace:
>
> Very interesting. IDE / SCSI?

hmm.. Overlapping emails.

The crash with e2fsck was easily repeatable with the above patch. Just
dirty a few buffers and run /sbin/sync. It's due to the __make_request
queue_head thing which you fixed in test12-pre3. Yes, this was IDE.

However the original problem of a list_del being performed on a wild
pointer is being seen on SCSI systems. I expect the above patch will
catch it if it's still happening.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 12:51    [W:0.088 / U:2.788 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site