drm/i915: Large page offsets for pread/pwrite

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commit ab0d6a1418 upstream.

Handle integer overflow when computing the sub-page length for shmem
backed pread/pwrite.

Reported-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: stable@vger.kernel.org
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181012140228.29783-1-chris@chris-wilson.co.uk
(cherry picked from commit a5e856a534)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Chris Wilson 2018-10-12 15:02:28 +01:00 • committed by Greg Kroah-Hartman

parent 811342d761

commit 528e652dbc

1 changed files with 2 additions and 10 deletions

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drivers/gpu/drm/i915/i915_gem.c

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