Op 24-04-2019 om 15:12 schreef kbuild test robot:
> tree: git://anongit.freedesktop.org/drm/drm-misc for-linux-next-fixes
> head: d08106796a78a4273e39e1bbdf538dc4334b2635
> commit: d08106796a78a4273e39e1bbdf538dc4334b2635 [1/1] drm/vc4: Fix memory
> leak during gpu reset.
> reproduce:
> # apt-get install sparse
> git checkout d08106796a78a4273e39e1bbdf538dc4334b2635
> make ARCH=x86_64 allmodconfig
> make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'
>
> If you fix the issue, kindly add following tag
> Reported-by: kbuild test robot <l...@intel.com>
>
> sparse warnings: (new ones prefixed by >>)
>
>>> drivers/gpu/drm/vc4/vc4_crtc.c:1045:44: sparse: sparse: incorrect type in
>>> argument 1 (different base types) @@ expected struct drm_crtc *crtc @@
>>> got structstruct drm_crtc *crtc @@
>>> drivers/gpu/drm/vc4/vc4_crtc.c:1045:44: sparse: expected struct drm_crtc
>>> *crtc
>>> drivers/gpu/drm/vc4/vc4_crtc.c:1045:44: sparse: got struct
>>> drm_crtc_state *state
>>> drivers/gpu/drm/vc4/vc4_crtc.c:1045:39: sparse: sparse: not enough
>>> arguments for function vc4_crtc_destroy_state
> vim +1045 drivers/gpu/drm/vc4/vc4_crtc.c
>
> 1040
> 1041 static void
> 1042 vc4_crtc_reset(struct drm_crtc *crtc)
> 1043 {
> 1044 if (crtc->state)
>> 1045 vc4_crtc_destroy_state(crtc->state);
> 1046
> 1047 crtc->state = kzalloc(sizeof(struct vc4_crtc_state),
> GFP_KERNEL);
> 1048 if (crtc->state)
> 1049 crtc->state->crtc = crtc;
> 1050 }
> 1051
>
> ---
> 0-DAY kernel test infrastructure Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all Intel Corporation
-----8<----
A pointer to crtc was missing, resulting in the following build error:
drivers/gpu/drm/vc4/vc4_crtc.c:1045:44: sparse: sparse: incorrect type in
argument 1 (different base types)
drivers/gpu/drm/vc4/vc4_crtc.c:1045:44: sparse: expected struct drm_crtc
*crtc
drivers/gpu/drm/vc4/vc4_crtc.c:1045:44: sparse: got struct drm_crtc_state
*state
drivers/gpu/drm/vc4/vc4_crtc.c:1045:39: sparse: sparse: not enough arguments
for function vc4_crtc_destroy_state
Signed-off-by: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
Reported-by: kbuild test robot <l...@intel.com>
Cc: Eric Anholt <e...@anholt.net>
---
drivers/gpu/drm/vc4/vc4_crtc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c
index e7c04a9eb219..1baa10e94484 100644
--- a/drivers/gpu/drm/vc4/vc4_crtc.c
+++ b/drivers/gpu/drm/vc4/vc4_crtc.c
@@ -1042,7 +1042,7 @@ static void
vc4_crtc_reset(struct drm_crtc *crtc)
{
if (crtc->state)
- vc4_crtc_destroy_state(crtc->state);
+ vc4_crtc_destroy_state(crtc, crtc->state);
crtc->state = kzalloc(sizeof(struct vc4_crtc_state), GFP_KERNEL);
if (crtc->state)
--
2.20.1
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