zfs: Fatal trap 12: page fault while in kernel mode

[Andriy Gapon]

on 29/07/2009 14:21 Andriy Gapon said the following:
> Your panics are superficially similar but seem to be different.
> But it is hard to tell as function argument values are not available in your
> backtraces for the interesting calls.
> One difference that I see is that your panics happen one level below _sx_xlock, in
> sx_xlock_hard and sx argument value appears to be far from NULL
> (0xffffff0043557d50) - in the panic that started this thread it was near NULL.
> Another difference is that you panics do not involve zfs_znode_dmu_fini and
> mu_buf_update_user, in your case sx_xlock is called directly from
> zfs_freebsd_reclaim. So it must a problem with a different lock.

BTW, have you tried to reproduce the problem with INVARIANTS enabled?
Do you have crashdumps with debugging symbols?


-- 
Andriy Gapon