According to the changelog, this is fixed upstream in kernel 3.2-rc6:
Revert "drm/i915: fix infinite recursion on unbind due to ilk vt-d w/a"
This reverts commit eb1711bb94991e93669c5a1b5f84f11be2d51ea1.
It blows up the i915 seqno tracking, resulting in the
BUG_ON(seqno == 0);
in i915_wait_request() triggering, which will cause lock-ups.
See for example https://bugs.launchpad.net/ubuntu/+source/linux/+bug/903010 https://lkml.org/lkml/2011/12/14/395
Reported-requested-and-tested-by: Dirk Hohndel Reported-by: Richard Eames Reported-by: Rocko Requin Acked-by: Daniel Vetter Cc: Dave Airlie Cc: Chris Wilson Cc: Keith Packard Cc: Eric Anholt Signed-off-by: Linus Torvalds
According to the changelog, this is fixed upstream in kernel 3.2-rc6:
Revert "drm/i915: fix infinite recursion on unbind due to ilk vt-d w/a"
This reverts commit eb1711bb94991e9 3669c5a1b5f84f1 1be2d51ea1.
It blows up the i915 seqno tracking, resulting in the
BUG_ON(seqno == 0);
in i915_wait_request() triggering, which will cause lock-ups.
See for example /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/903010 /lkml.org/ lkml/2011/ 12/14/395
https:/
https:/
Reported- requested- and-tested- by: Dirk Hohndel
Reported-by: Richard Eames
Reported-by: Rocko Requin
Acked-by: Daniel Vetter
Cc: Dave Airlie
Cc: Chris Wilson
Cc: Keith Packard
Cc: Eric Anholt
Signed-off-by: Linus Torvalds