[Linux-cachefs] 'bad page state' error

[David Howells]

Rob Bos <rbos at sfu.ca> wrote:

> Apologies for the attachment size. Did not think that through.

That's okay.  It arrived.

Lots of "bad page state" errors appearing to show the pages have been returned
to the allocator before fscache has finished with them.

Am I right in thinking that you're using cifs and not NFS with fscache on this
box (I don't see any NFS modules listed in the oops)?

> Jul  4 09:45:36 lib-hf3 kernel: FS-Cache: Assertion failed
> Jul  4 09:45:36 lib-hf3 kernel: 3 == 5 is false
> Jul  4 09:45:36 lib-hf3 kernel: ------------[ cut here ]------------
> Jul  4 09:45:36 lib-hf3 kernel: kernel BUG at fs/fscache/operation.c:421!

You're using your own kernel right? (2.6.32-373.el6.rbos.2.x86_64).  I'm
assuming you don't have the latest patches applied because the BUG line number
should have changed from 421 to 428.

I can send you the RHEL-6 variants of the patches to try if you don't mind
munging the specfile manually.

David