drm/i915: fix driver's versions of WARN_ON & WARN_ON_ONCE

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The current versions of these two macros don't work correctly if the
argument expression happens to contain a modulo operator (%) -- when
stringified, it gets interpreted as a printf formatting character!
With a specifically crafted parameter, this could probably cause a
kernel OOPS; consider WARN_ON(p%s) or WARN_ON(f %*pEp).

Instead, we should use an explicit "%s" format, with the stringified
expression as the coresponding literal-string argument.

Signed-off-by: Dave Gordon <david.s.gordon@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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Dave Gordon 2015-08-17 17:30:52 +01:00 • committed by Daniel Vetter

parent 901c2daf05

commit 4eee4920f0

1 changed files with 2 additions and 2 deletions

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drivers/gpu/drm/i915/i915_drv.h

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