https://bugs.freedesktop.org/show_bug.cgi?id=98372
Chris Wilson <chris at chris-wilson.co.uk> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #2 from Chris Wilson <chris at chris-wilson.co.uk> ---
commit 8a5bbf327aa16025c78491266a6425807c7fbee0
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date: Fri Oct 21 15:15:40 2016 +0100
drm: Use u64 for intermediate dotclock calculations
We have reached the era where monitor bandwidths now exceed 31bits in
frequency calculations, though as we stored them in kHz units we are
safe from overflow in the modelines for some time.
[ 48.723720] UBSAN: Undefined behaviour in
../drivers/gpu/drm/drm_modes.c:325:49
[ 48.726943] signed integer overflow:
[ 48.728503] 2240 * 1000000 cannot be represented in type 'int'
Reported-by: Martin Liška <marxin.liska at gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98372
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
Link:
http://patchwork.freedesktop.org/patch/msgid/20161021141540.26837-1-chris at
chris-wilson.co.uk
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