Re: 2.4.22-pre lockups (decoded oops for pre8)

[Stephan von Krawczynski <skraw@ithnet.com>]

On Sun, 3 Aug 2003 09:25:25 +0200
Willy Tarreau <willy@w.ods.org> wrote:

> Hi Stephan,
> 
> This is in remove_page_from_hash_queue() at filemap.c:114 :
>     *pprev = next;
> 
> pprev is taken from page->pprev_hash and is considered invalid here
> (4129b0fc). Assuming it has been corrupted earlier, it seems that the only
> files able to touch this either directly or indirectly are :
>   - mm/filemap.c (add_page_to_hash_queue, add_to_page_cache*)
>   - mm/shmem.c (add_to_page_cache_unique)
>   - mm/swap_state.c (idem)

>   - fs/ext3/inode.c and fs/buffer.c (find_or_create_page)

Ext3 is unlikely to be related, the box never saw ext3. Ext2 is only used on
/boot (so very unlikely, too), everything else is reiserfs.


> 
> So the problem may be narrowed down to a few files. Perhaps digging through
> the VM changes since before you had a problem will give you more clues...
> 
> Cheers,
> Willy

Thanks for commenting, the problem really is annoying because I _know_ the box
will freeze, only it takes time, this time 4 days...

Regards,
Stephan