From: Carsten Haitzler <carsten.haitzler@xxxxxxx>
KASAN found this problem. find_first_bit() expects to look at a
pointer pointing to a long, but we look at a u32 - this is going to be
an issue with endianess but, KSAN already flags this as out-of-bounds
stack reads. This fixes it by just importing inot a local long.
Signed-off-by: Carsten Haitzler <carsten.haitzler@xxxxxxx>
---
drivers/gpu/drm/arm/display/komeda/komeda_pipeline.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.c b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.c
index 452e505a1fd3..719a79728e24 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.c
@@ -137,9 +137,10 @@ komeda_pipeline_get_first_component(struct komeda_pipeline *pipe,
u32 comp_mask)
{
struct komeda_component *c = NULL;
+ unsigned long comp_mask_local = (unsigned long)comp_mask;
int id;
- id = find_first_bit((unsigned long *)&comp_mask, 32);
+ id = find_first_bit(&comp_mask_local, 32);
if (id < 32)
c = komeda_pipeline_get_component(pipe, id);
--
2.29.2
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