Messages in this thread | | | Date | Tue, 17 Jun 2008 18:14:49 +0900 | From | KOSAKI Motohiro <> | Subject | Re: [Bad page] trying to free locked page? (Re: [PATCH][RFC] fix kernel BUG at mm/migrate.c:719! in 2.6.26-rc5-mm3) |
| |
> > > I got this bug while migrating pages only a few times > > > via memory_migrate of cpuset. > > > > > > Unfortunately, even if this patch is applied, > > > I got bad_page problem after hundreds times of page migration > > > (I'll report it in another mail). > > > But I believe something like this patch is needed anyway. > > > > > > > I got bad_page after hundreds times of page migration. > > It seems that a locked page is being freed. > > > Good catch, and I think your investigation in the last e-mail was correct. > I'd like to dig this...but it seems some kind of big fix is necessary. > Did this happen under page-migraion by cpuset-task-move test ?
Indeed!
I guess lee's unevictable infrastructure and nick's specurative pagecache is conflicted. I'm investigating deeply now.
| |