Re: [Intel-gfx] [PATCH] drm/i915/pmu: fix noderef.cocci warnings

From: Tvrtko Ursulin
Date: Fri Jan 12 2018 - 09:28:11 EST



On 12/01/2018 13:31, kbuild test robot wrote:
From: Fengguang Wu <fengguang.wu@xxxxxxxxx>

drivers/gpu/drm/i915/i915_pmu.c:795:34-40: ERROR: application of sizeof to pointer

sizeof when applied to a pointer typed expression gives the size of
the pointer

Generated by: scripts/coccinelle/misc/noderef.cocci

Fixes: 109ec558370f ("drm/i915/pmu: Only enumerate available counters in sysfs")
Signed-off-by: Fengguang Wu <fengguang.wu@xxxxxxxxx>
---

i915_pmu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/i915/i915_pmu.c
+++ b/drivers/gpu/drm/i915/i915_pmu.c
@@ -792,7 +792,7 @@ create_event_attributes(struct drm_i915_
goto err_alloc;
/* Max one pointer of each attribute type plus a termination entry. */
- attr = kzalloc((count * 2 + 1) * sizeof(attr), GFP_KERNEL);
+ attr = kzalloc((count * 2 + 1) * sizeof(*attr), GFP_KERNEL);
if (!attr)
goto err_alloc;

Luckily it is the same size so no actual bug, but fix is still valid. Will merge it once it passes CI, thanks!

Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>

Regards,

Tvrtko