Re: kern/50060: kernel crash with i915drmksm on Intel 965Q

[christos%zoulas.com@localhost (Christos Zoulas)]

On Oct 12, 12:25pm, gson%gson.org@localhost (Andreas Gustafsson) wrote:
-- Subject: Re: kern/50060: kernel crash with i915drmksm on Intel 965Q

| The following reply was made to PR kern/50060; it has been noted by GNATS.
| 
| From: Andreas Gustafsson <gson%gson.org@localhost>
| To: christos%zoulas.com@localhost (Christos Zoulas), gnats-bugs%NetBSD.org@localhost
| Cc: 
| Subject: Re: kern/50060: kernel crash with i915drmksm on Intel 965Q
| Date: Mon, 12 Oct 2015 15:24:30 +0300
| 
|  I added another bunch of printfs to track down where the
|  bus_space_unmap() call happens.
|  
|  i915_driver_load() calls i915_gem_gtt_init(), which
|  returns a nonzero value via this return statement:
|  
|          ret = gtt->gtt_probe(dev, &gtt->base.total, &gtt->stolen_size,
|                               &gtt->mappable_base, &gtt->mappable_end);
|          if (ret)
|                  return ret;

Unfortunately forcing an error there on my machine does not reproduce
the problem... Boot completes but I end up with no console which is a
different bug!

christos