9.2 + ZFS + i386 = panic: pmap_enter: attempted pmap_enter on 4MB page

[J David]

On Tue, Oct 22, 2013 at 1:35 PM, Konstantin Belousov
<kostikbel at gmail.com> wrote:
> One thing that catched my eye initially are very strange pointers in the
> backtrace, like 'zio=0x883ca8b8'. The standard i386 address space map
> splits user/kernel mode at 3GB, so 0x883ca8b8 is definitely usermode,
> unless non-standard kernel config is used.

The current kernel config for that machine is:

options SW_WATCHDOG
options KVA_PAGES=512

nodevice plip

options DDB
options BREAK_TO_DEBUGGER

options INVARIANTS
options INVARIANT_SUPPORT
options WITNESS
options DEBUG_LOCKS
options DEBUG_VFS_LOCKS
options DIAGNOSTIC


It has been tried with and without KVA_PAGES=512.  Doesn't seem to
make a difference from a crashing-all-the-time standpoint.

> This is why I asked for the gdb backtrace.

That *was* a kgdb backtrace.  Is there something else needed?

Thanks!