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* [Intel-gfx] [PATCH 1/5] Critical-KclockWork-Fixes-intel_atomi.c-PossibleNull
@ 2020-08-19  4:34 Nischal Varide
  2020-08-19  4:34 ` [Intel-gfx] [PATCH 2/5] Critical-KlockWork-Fixes-intel_display.c-NullDeref Nischal Varide
                   ` (8 more replies)
  0 siblings, 9 replies; 22+ messages in thread
From: Nischal Varide @ 2020-08-19  4:34 UTC (permalink / raw)
  To: intel-gfx, nischal.varide

This Patch fixes the Klocwork errors and the Current fix is avoiding
Possible Null Pointer Dereference

Signed-off-by: Nischal Varide <nischal.varide@intel.com>
---
 drivers/gpu/drm/i915/display/intel_atomic.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_atomic.c b/drivers/gpu/drm/i915/display/intel_atomic.c
index 630f49b7aa01..cf51f1005ec1 100644
--- a/drivers/gpu/drm/i915/display/intel_atomic.c
+++ b/drivers/gpu/drm/i915/display/intel_atomic.c
@@ -132,6 +132,9 @@ int intel_digital_connector_atomic_check(struct drm_connector *conn,
 		to_intel_digital_connector_state(old_state);
 	struct drm_crtc_state *crtc_state;
 
+	if (!(new_state && new_conn_state && old_state && old_conn_state))
+		return 0;
+
 	intel_hdcp_atomic_check(conn, old_state, new_state);
 	intel_psr_atomic_check(conn, old_state, new_state);
 
@@ -192,6 +195,8 @@ intel_connector_needs_modeset(struct intel_atomic_state *state,
 
 	old_conn_state = drm_atomic_get_old_connector_state(&state->base, connector);
 	new_conn_state = drm_atomic_get_new_connector_state(&state->base, connector);
+	if (!(old_conn_state && new_conn_state))
+		return 0;
 
 	return old_conn_state->crtc != new_conn_state->crtc ||
 	       (new_conn_state->crtc &&
@@ -418,7 +423,7 @@ int intel_atomic_setup_scalers(struct drm_i915_private *dev_priv,
 	 */
 
 	/* fail if required scalers > available scalers */
-	if (num_scalers_need > intel_crtc->num_scalers){
+	if (num_scalers_need > intel_crtc->num_scalers) {
 		drm_dbg_kms(&dev_priv->drm,
 			    "Too many scaling requests %d > %d\n",
 			    num_scalers_need, intel_crtc->num_scalers);
-- 
2.26.0

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply related	[flat|nested] 22+ messages in thread

* [Intel-gfx] [PATCH 2/5] Critical-KlockWork-Fixes-intel_display.c-NullDeref
  2020-08-19  4:34 [Intel-gfx] [PATCH 1/5] Critical-KclockWork-Fixes-intel_atomi.c-PossibleNull Nischal Varide
@ 2020-08-19  4:34 ` Nischal Varide
  2020-08-20  3:24     ` kernel test robot
  2020-08-25  9:25     ` Dan Carpenter
  2020-08-19  4:34 ` [Intel-gfx] [PATCH 3/5] Critical-KlockWorks-Fix-intel_sdvo.c-Possible-Null Nischal Varide
                   ` (7 subsequent siblings)
  8 siblings, 2 replies; 22+ messages in thread
From: Nischal Varide @ 2020-08-19  4:34 UTC (permalink / raw)
  To: intel-gfx, nischal.varide

This Patch fixes the Critical KlockWork Error and here a possible NuLL
Pointer dereferencing is addressed. A check has been added before
dereferencing.

Signed-off-by: Nischal Varide <nischal.varide@intel.com>
---
 drivers/gpu/drm/i915/display/intel_display.c | 22 +++++++++++---------
 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 2ddabf92adde..cc59c5e94698 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -2265,9 +2265,9 @@ intel_pin_and_fence_fb_obj(struct drm_framebuffer *fb,
 	pinctl = 0;
 	if (HAS_GMCH(dev_priv))
 		pinctl |= PIN_MAPPABLE;
-
-	vma = i915_gem_object_pin_to_display_plane(obj,
-						   alignment, view, pinctl);
+	if (obj)
+		vma = i915_gem_object_pin_to_display_plane(obj,
+			alignment, view, pinctl);
 	if (IS_ERR(vma))
 		goto err;
 
@@ -11269,10 +11269,13 @@ static u32 intel_cursor_base(const struct intel_plane_state *plane_state)
 	const struct drm_i915_gem_object *obj = intel_fb_obj(fb);
 	u32 base;
 
-	if (INTEL_INFO(dev_priv)->display.cursor_needs_physical)
-		base = sg_dma_address(obj->mm.pages->sgl);
-	else
-		base = intel_plane_ggtt_offset(plane_state);
+	if (obj) {
+
+		if (INTEL_INFO(dev_priv)->display.cursor_needs_physical)
+			base = sg_dma_address(obj->mm.pages->sgl);
+		else
+			base = intel_plane_ggtt_offset(plane_state);
+	}
 
 	return base + plane_state->color_plane[0].offset;
 }
@@ -17126,10 +17129,9 @@ static int intel_user_framebuffer_dirty(struct drm_framebuffer *fb,
 					unsigned num_clips)
 {
 	struct drm_i915_gem_object *obj = intel_fb_obj(fb);
-
-	i915_gem_object_flush_if_display(obj);
+	if (obj)
+		i915_gem_object_flush_if_display(obj);
 	intel_frontbuffer_flush(to_intel_frontbuffer(fb), ORIGIN_DIRTYFB);
-
 	return 0;
 }
 
-- 
2.26.0

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply related	[flat|nested] 22+ messages in thread

* [Intel-gfx] [PATCH 3/5] Critical-KlockWorks-Fix-intel_sdvo.c-Possible-Null
  2020-08-19  4:34 [Intel-gfx] [PATCH 1/5] Critical-KclockWork-Fixes-intel_atomi.c-PossibleNull Nischal Varide
  2020-08-19  4:34 ` [Intel-gfx] [PATCH 2/5] Critical-KlockWork-Fixes-intel_display.c-NullDeref Nischal Varide
@ 2020-08-19  4:34 ` Nischal Varide
  2020-08-19  4:34 ` [Intel-gfx] [PATCH 4/5] Critical-KlockWork-Fix-intel_tv.c-Possible-Null Nischal Varide
                   ` (6 subsequent siblings)
  8 siblings, 0 replies; 22+ messages in thread
From: Nischal Varide @ 2020-08-19  4:34 UTC (permalink / raw)
  To: intel-gfx, nischal.varide

This patch fixes Critical Klockwork errors and in this case a Possible
Null Pointer Dereferencing is addressed with a Check before
Dereferencing

Signed-off-by: Nischal Varide <nischal.varide@intel.com>
---
 drivers/gpu/drm/i915/display/intel_sdvo.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_sdvo.c b/drivers/gpu/drm/i915/display/intel_sdvo.c
index 2da4388e1540..186a2d695bb6 100644
--- a/drivers/gpu/drm/i915/display/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/display/intel_sdvo.c
@@ -2505,6 +2505,9 @@ static int intel_sdvo_atomic_check(struct drm_connector *conn,
 	struct intel_sdvo_connector_state *new_state =
 		to_intel_sdvo_connector_state(new_conn_state);
 
+	if (!(new_conn_state && old_conn_state && old_state && new_state))
+		return 0;
+
 	if (new_conn_state->crtc &&
 	    (memcmp(&old_state->tv, &new_state->tv, sizeof(old_state->tv)) ||
 	     memcmp(&old_conn_state->tv, &new_conn_state->tv, sizeof(old_conn_state->tv)))) {
-- 
2.26.0

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply related	[flat|nested] 22+ messages in thread

* [Intel-gfx] [PATCH 4/5] Critical-KlockWork-Fix-intel_tv.c-Possible-Null
  2020-08-19  4:34 [Intel-gfx] [PATCH 1/5] Critical-KclockWork-Fixes-intel_atomi.c-PossibleNull Nischal Varide
  2020-08-19  4:34 ` [Intel-gfx] [PATCH 2/5] Critical-KlockWork-Fixes-intel_display.c-NullDeref Nischal Varide
  2020-08-19  4:34 ` [Intel-gfx] [PATCH 3/5] Critical-KlockWorks-Fix-intel_sdvo.c-Possible-Null Nischal Varide
@ 2020-08-19  4:34 ` Nischal Varide
  2020-08-24  6:32   ` Anshuman Gupta
  2020-08-25  9:31     ` Dan Carpenter
  2020-08-19  4:34 ` [Intel-gfx] [PATCH 5/5] Critical-KlockWorks-Fix-intel_crt.c-Possible-Null Nischal Varide
                   ` (5 subsequent siblings)
  8 siblings, 2 replies; 22+ messages in thread
From: Nischal Varide @ 2020-08-19  4:34 UTC (permalink / raw)
  To: intel-gfx, nischal.varide

This patch fixes the Critical Klock work Error and in this case a
Possible Null Pointer Dereference has been addressed with a Null check
before dereferencing

Signed-off-by: Nischal Varide <nischal.varide@intel.com>
---
 drivers/gpu/drm/i915/display/intel_tv.c | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_tv.c b/drivers/gpu/drm/i915/display/intel_tv.c
index 777032d9697b..5600d146ae81 100644
--- a/drivers/gpu/drm/i915/display/intel_tv.c
+++ b/drivers/gpu/drm/i915/display/intel_tv.c
@@ -1836,17 +1836,20 @@ static int intel_tv_atomic_check(struct drm_connector *connector,
 	struct drm_connector_state *old_state;
 
 	new_state = drm_atomic_get_new_connector_state(state, connector);
-	if (!new_state->crtc)
-		return 0;
-
 	old_state = drm_atomic_get_old_connector_state(state, connector);
 	new_crtc_state = drm_atomic_get_new_crtc_state(state, new_state->crtc);
 
+	if (!(old_state && new_state && new_crtc_state))
+		return 0;
+
+	if (!new_state->crtc)
+		return 0;
+
 	if (old_state->tv.mode != new_state->tv.mode ||
-	    old_state->tv.margins.left != new_state->tv.margins.left ||
-	    old_state->tv.margins.right != new_state->tv.margins.right ||
-	    old_state->tv.margins.top != new_state->tv.margins.top ||
-	    old_state->tv.margins.bottom != new_state->tv.margins.bottom) {
+		old_state->tv.margins.left != new_state->tv.margins.left ||
+		old_state->tv.margins.right != new_state->tv.margins.right ||
+		old_state->tv.margins.top != new_state->tv.margins.top ||
+		old_state->tv.margins.bottom != new_state->tv.margins.bottom) {
 		/* Force a modeset. */
 
 		new_crtc_state->connectors_changed = true;
-- 
2.26.0

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply related	[flat|nested] 22+ messages in thread

* [Intel-gfx] [PATCH 5/5] Critical-KlockWorks-Fix-intel_crt.c-Possible-Null
  2020-08-19  4:34 [Intel-gfx] [PATCH 1/5] Critical-KclockWork-Fixes-intel_atomi.c-PossibleNull Nischal Varide
                   ` (2 preceding siblings ...)
  2020-08-19  4:34 ` [Intel-gfx] [PATCH 4/5] Critical-KlockWork-Fix-intel_tv.c-Possible-Null Nischal Varide
@ 2020-08-19  4:34 ` Nischal Varide
  2020-08-24  6:27   ` Anshuman Gupta
  2020-08-19 11:52 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for series starting with [1/5] Critical-KclockWork-Fixes-intel_atomi.c-PossibleNull Patchwork
                   ` (4 subsequent siblings)
  8 siblings, 1 reply; 22+ messages in thread
From: Nischal Varide @ 2020-08-19  4:34 UTC (permalink / raw)
  To: intel-gfx, nischal.varide

This Patch fixes the Critical KlockWork Errors and here a Possible Null
Pointer Dereferencing is addressed with a Null Pointer check before
Dereferencing

Signed-off-by: Nischal Varide <nischal.varide@intel.com>
---
 drivers/gpu/drm/i915/display/intel_crt.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_crt.c b/drivers/gpu/drm/i915/display/intel_crt.c
index 5b4510ce5693..b5777fdc8cac 100644
--- a/drivers/gpu/drm/i915/display/intel_crt.c
+++ b/drivers/gpu/drm/i915/display/intel_crt.c
@@ -504,6 +504,9 @@ static bool valleyview_crt_detect_hotplug(struct drm_connector *connector)
 	bool ret;
 	u32 save_adpa;
 
+	if (!(dev_priv))
+		return false;
+
 	/*
 	 * Doing a force trigger causes a hpd interrupt to get sent, which can
 	 * get us stuck in a loop if we're polling:
-- 
2.26.0

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply related	[flat|nested] 22+ messages in thread

* [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for series starting with [1/5] Critical-KclockWork-Fixes-intel_atomi.c-PossibleNull
  2020-08-19  4:34 [Intel-gfx] [PATCH 1/5] Critical-KclockWork-Fixes-intel_atomi.c-PossibleNull Nischal Varide
                   ` (3 preceding siblings ...)
  2020-08-19  4:34 ` [Intel-gfx] [PATCH 5/5] Critical-KlockWorks-Fix-intel_crt.c-Possible-Null Nischal Varide
@ 2020-08-19 11:52 ` Patchwork
  2020-08-19 12:09 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
                   ` (3 subsequent siblings)
  8 siblings, 0 replies; 22+ messages in thread
From: Patchwork @ 2020-08-19 11:52 UTC (permalink / raw)
  To: Nischal Varide; +Cc: intel-gfx

== Series Details ==

Series: series starting with [1/5] Critical-KclockWork-Fixes-intel_atomi.c-PossibleNull
URL   : https://patchwork.freedesktop.org/series/80798/
State : warning

== Summary ==

$ dim checkpatch origin/drm-tip
3848eb8cc6ce Critical-KclockWork-Fixes-intel_atomi.c-PossibleNull
eb9bd41069a2 Critical-KlockWork-Fixes-intel_display.c-NullDeref
-:25: CHECK:PARENTHESIS_ALIGNMENT: Alignment should match open parenthesis
#25: FILE: drivers/gpu/drm/i915/display/intel_display.c:2270:
+		vma = i915_gem_object_pin_to_display_plane(obj,
+			alignment, view, pinctl);

-:38: CHECK:BRACES: Blank lines aren't necessary after an open brace '{'
#38: FILE: drivers/gpu/drm/i915/display/intel_display.c:11273:
+	if (obj) {
+

total: 0 errors, 0 warnings, 2 checks, 41 lines checked
f99675438805 Critical-KlockWorks-Fix-intel_sdvo.c-Possible-Null
66e2f48dd7a0 Critical-KlockWork-Fix-intel_tv.c-Possible-Null
75fa8cc3edb3 Critical-KlockWorks-Fix-intel_crt.c-Possible-Null


_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply	[flat|nested] 22+ messages in thread

* [Intel-gfx] ✓ Fi.CI.BAT: success for series starting with [1/5] Critical-KclockWork-Fixes-intel_atomi.c-PossibleNull
  2020-08-19  4:34 [Intel-gfx] [PATCH 1/5] Critical-KclockWork-Fixes-intel_atomi.c-PossibleNull Nischal Varide
                   ` (4 preceding siblings ...)
  2020-08-19 11:52 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for series starting with [1/5] Critical-KclockWork-Fixes-intel_atomi.c-PossibleNull Patchwork
@ 2020-08-19 12:09 ` Patchwork
  2020-08-19 18:47   ` kernel test robot
                   ` (2 subsequent siblings)
  8 siblings, 0 replies; 22+ messages in thread
From: Patchwork @ 2020-08-19 12:09 UTC (permalink / raw)
  To: Nischal Varide; +Cc: intel-gfx


[-- Attachment #1.1: Type: text/plain, Size: 4631 bytes --]

== Series Details ==

Series: series starting with [1/5] Critical-KclockWork-Fixes-intel_atomi.c-PossibleNull
URL   : https://patchwork.freedesktop.org/series/80798/
State : success

== Summary ==

CI Bug Log - changes from CI_DRM_8907 -> Patchwork_18371
====================================================

Summary
-------

  **SUCCESS**

  No regressions found.

  External URL: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/index.html

Known issues
------------

  Here are the changes found in Patchwork_18371 that come from known issues:

### IGT changes ###

#### Issues hit ####

  * igt@gem_exec_suspend@basic-s0:
    - fi-tgl-u2:          [PASS][1] -> [FAIL][2] ([i915#1888])
   [1]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/fi-tgl-u2/igt@gem_exec_suspend@basic-s0.html
   [2]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/fi-tgl-u2/igt@gem_exec_suspend@basic-s0.html

  * igt@i915_pm_rpm@basic-pci-d3-state:
    - fi-byt-j1900:       [PASS][3] -> [DMESG-WARN][4] ([i915#1982])
   [3]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/fi-byt-j1900/igt@i915_pm_rpm@basic-pci-d3-state.html
   [4]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/fi-byt-j1900/igt@i915_pm_rpm@basic-pci-d3-state.html
    - fi-bsw-kefka:       [PASS][5] -> [DMESG-WARN][6] ([i915#1982])
   [5]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/fi-bsw-kefka/igt@i915_pm_rpm@basic-pci-d3-state.html
   [6]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/fi-bsw-kefka/igt@i915_pm_rpm@basic-pci-d3-state.html

  
#### Possible fixes ####

  * igt@kms_cursor_legacy@basic-busy-flip-before-cursor-atomic:
    - fi-bsw-kefka:       [DMESG-WARN][7] ([i915#1982]) -> [PASS][8]
   [7]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/fi-bsw-kefka/igt@kms_cursor_legacy@basic-busy-flip-before-cursor-atomic.html
   [8]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/fi-bsw-kefka/igt@kms_cursor_legacy@basic-busy-flip-before-cursor-atomic.html

  
#### Warnings ####

  * igt@gem_exec_suspend@basic-s0:
    - fi-kbl-x1275:       [DMESG-WARN][9] ([i915#1982] / [i915#62] / [i915#92] / [i915#95]) -> [DMESG-WARN][10] ([i915#62] / [i915#92] / [i915#95])
   [9]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/fi-kbl-x1275/igt@gem_exec_suspend@basic-s0.html
   [10]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/fi-kbl-x1275/igt@gem_exec_suspend@basic-s0.html

  * igt@kms_flip@basic-flip-vs-dpms@a-dp1:
    - fi-kbl-x1275:       [DMESG-WARN][11] ([i915#62] / [i915#92] / [i915#95]) -> [DMESG-WARN][12] ([i915#62] / [i915#92]) +1 similar issue
   [11]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/fi-kbl-x1275/igt@kms_flip@basic-flip-vs-dpms@a-dp1.html
   [12]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/fi-kbl-x1275/igt@kms_flip@basic-flip-vs-dpms@a-dp1.html

  * igt@kms_force_connector_basic@prune-stale-modes:
    - fi-kbl-x1275:       [DMESG-WARN][13] ([i915#62] / [i915#92]) -> [DMESG-WARN][14] ([i915#62] / [i915#92] / [i915#95])
   [13]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/fi-kbl-x1275/igt@kms_force_connector_basic@prune-stale-modes.html
   [14]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/fi-kbl-x1275/igt@kms_force_connector_basic@prune-stale-modes.html

  
  [i915#1888]: https://gitlab.freedesktop.org/drm/intel/issues/1888
  [i915#1982]: https://gitlab.freedesktop.org/drm/intel/issues/1982
  [i915#62]: https://gitlab.freedesktop.org/drm/intel/issues/62
  [i915#92]: https://gitlab.freedesktop.org/drm/intel/issues/92
  [i915#95]: https://gitlab.freedesktop.org/drm/intel/issues/95


Participating hosts (39 -> 34)
------------------------------

  Missing    (5): fi-ilk-m540 fi-hsw-4200u fi-byt-squawks fi-bsw-cyan fi-byt-clapper 


Build changes
-------------

  * Linux: CI_DRM_8907 -> Patchwork_18371

  CI-20190529: 20190529
  CI_DRM_8907: f9f7b73d0f125316a33e35f3315f3a5955079e33 @ git://anongit.freedesktop.org/gfx-ci/linux
  IGT_5769: 4e5f76be680b65780204668e302026cf638decc9 @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools
  Patchwork_18371: 75fa8cc3edb3b94544251d89ce0e8a9899547e3d @ git://anongit.freedesktop.org/gfx-ci/linux


== Linux commits ==

75fa8cc3edb3 Critical-KlockWorks-Fix-intel_crt.c-Possible-Null
66e2f48dd7a0 Critical-KlockWork-Fix-intel_tv.c-Possible-Null
f99675438805 Critical-KlockWorks-Fix-intel_sdvo.c-Possible-Null
eb9bd41069a2 Critical-KlockWork-Fixes-intel_display.c-NullDeref
3848eb8cc6ce Critical-KclockWork-Fixes-intel_atomi.c-PossibleNull

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/index.html

[-- Attachment #1.2: Type: text/html, Size: 6443 bytes --]

[-- Attachment #2: Type: text/plain, Size: 160 bytes --]

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply	[flat|nested] 22+ messages in thread

* Re: [Intel-gfx] [PATCH 1/5] Critical-KclockWork-Fixes-intel_atomi.c-PossibleNull
  2020-08-19  4:34 [Intel-gfx] [PATCH 1/5] Critical-KclockWork-Fixes-intel_atomi.c-PossibleNull Nischal Varide
@ 2020-08-19 18:47   ` kernel test robot
  2020-08-19  4:34 ` [Intel-gfx] [PATCH 3/5] Critical-KlockWorks-Fix-intel_sdvo.c-Possible-Null Nischal Varide
                     ` (7 subsequent siblings)
  8 siblings, 0 replies; 22+ messages in thread
From: kernel test robot @ 2020-08-19 18:47 UTC (permalink / raw)
  To: Nischal Varide, intel-gfx; +Cc: kbuild-all

[-- Attachment #1: Type: text/plain, Size: 1131 bytes --]

Hi Nischal,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on drm-intel/for-linux-next]
[also build test WARNING on v5.9-rc1 next-20200819]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Nischal-Varide/Critical-KclockWork-Fixes-intel_atomi-c-PossibleNull/20200819-193249
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: i386-randconfig-c001-20200818 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


coccinelle warnings: (new ones prefixed by >>)

>> drivers/gpu/drm/i915/display/intel_atomic.c:199:9-10: WARNING: return of 0/1 in function 'intel_connector_needs_modeset' with return type bool

Please review and possibly fold the followup patch.

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 34221 bytes --]

[-- Attachment #3: Type: text/plain, Size: 160 bytes --]

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply	[flat|nested] 22+ messages in thread

* Re: [Intel-gfx] [PATCH 1/5] Critical-KclockWork-Fixes-intel_atomi.c-PossibleNull
@ 2020-08-19 18:47   ` kernel test robot
  0 siblings, 0 replies; 22+ messages in thread
From: kernel test robot @ 2020-08-19 18:47 UTC (permalink / raw)
  To: kbuild-all

[-- Attachment #1: Type: text/plain, Size: 1161 bytes --]

Hi Nischal,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on drm-intel/for-linux-next]
[also build test WARNING on v5.9-rc1 next-20200819]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Nischal-Varide/Critical-KclockWork-Fixes-intel_atomi-c-PossibleNull/20200819-193249
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: i386-randconfig-c001-20200818 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


coccinelle warnings: (new ones prefixed by >>)

>> drivers/gpu/drm/i915/display/intel_atomic.c:199:9-10: WARNING: return of 0/1 in function 'intel_connector_needs_modeset' with return type bool

Please review and possibly fold the followup patch.

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

[-- Attachment #2: config.gz --]
[-- Type: application/gzip, Size: 34221 bytes --]

^ permalink raw reply	[flat|nested] 22+ messages in thread

* [Intel-gfx] [PATCH] fix boolreturn.cocci warnings
  2020-08-19  4:34 [Intel-gfx] [PATCH 1/5] Critical-KclockWork-Fixes-intel_atomi.c-PossibleNull Nischal Varide
@ 2020-08-19 18:47   ` kernel test robot
  2020-08-19  4:34 ` [Intel-gfx] [PATCH 3/5] Critical-KlockWorks-Fix-intel_sdvo.c-Possible-Null Nischal Varide
                     ` (7 subsequent siblings)
  8 siblings, 0 replies; 22+ messages in thread
From: kernel test robot @ 2020-08-19 18:47 UTC (permalink / raw)
  To: Nischal Varide, intel-gfx; +Cc: kbuild-all

From: kernel test robot <lkp@intel.com>

drivers/gpu/drm/i915/display/intel_atomic.c:199:9-10: WARNING: return of 0/1 in function 'intel_connector_needs_modeset' with return type bool

 Return statements in functions returning bool should use
 true/false instead of 1/0.
Generated by: scripts/coccinelle/misc/boolreturn.cocci

CC: Nischal Varide <nischal.varide@intel.com>
Signed-off-by: kernel test robot <lkp@intel.com>
---

url:    https://github.com/0day-ci/linux/commits/Nischal-Varide/Critical-KclockWork-Fixes-intel_atomi-c-PossibleNull/20200819-193249
base:   git://anongit.freedesktop.org/drm-intel for-linux-next

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

--- a/drivers/gpu/drm/i915/display/intel_atomic.c
+++ b/drivers/gpu/drm/i915/display/intel_atomic.c
@@ -196,7 +196,7 @@ intel_connector_needs_modeset(struct int
 	old_conn_state = drm_atomic_get_old_connector_state(&state->base, connector);
 	new_conn_state = drm_atomic_get_new_connector_state(&state->base, connector);
 	if (!(old_conn_state && new_conn_state))
-		return 0;
+		return false;
 
 	return old_conn_state->crtc != new_conn_state->crtc ||
 	       (new_conn_state->crtc &&
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply	[flat|nested] 22+ messages in thread

* [PATCH] fix boolreturn.cocci warnings
@ 2020-08-19 18:47   ` kernel test robot
  0 siblings, 0 replies; 22+ messages in thread
From: kernel test robot @ 2020-08-19 18:47 UTC (permalink / raw)
  To: kbuild-all

[-- Attachment #1: Type: text/plain, Size: 1212 bytes --]

From: kernel test robot <lkp@intel.com>

drivers/gpu/drm/i915/display/intel_atomic.c:199:9-10: WARNING: return of 0/1 in function 'intel_connector_needs_modeset' with return type bool

 Return statements in functions returning bool should use
 true/false instead of 1/0.
Generated by: scripts/coccinelle/misc/boolreturn.cocci

CC: Nischal Varide <nischal.varide@intel.com>
Signed-off-by: kernel test robot <lkp@intel.com>
---

url:    https://github.com/0day-ci/linux/commits/Nischal-Varide/Critical-KclockWork-Fixes-intel_atomi-c-PossibleNull/20200819-193249
base:   git://anongit.freedesktop.org/drm-intel for-linux-next

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

--- a/drivers/gpu/drm/i915/display/intel_atomic.c
+++ b/drivers/gpu/drm/i915/display/intel_atomic.c
@@ -196,7 +196,7 @@ intel_connector_needs_modeset(struct int
 	old_conn_state = drm_atomic_get_old_connector_state(&state->base, connector);
 	new_conn_state = drm_atomic_get_new_connector_state(&state->base, connector);
 	if (!(old_conn_state && new_conn_state))
-		return 0;
+		return false;
 
 	return old_conn_state->crtc != new_conn_state->crtc ||
 	       (new_conn_state->crtc &&

^ permalink raw reply	[flat|nested] 22+ messages in thread

* [Intel-gfx] ✓ Fi.CI.IGT: success for series starting with [1/5] Critical-KclockWork-Fixes-intel_atomi.c-PossibleNull
  2020-08-19  4:34 [Intel-gfx] [PATCH 1/5] Critical-KclockWork-Fixes-intel_atomi.c-PossibleNull Nischal Varide
                   ` (7 preceding siblings ...)
  2020-08-19 18:47   ` kernel test robot
@ 2020-08-19 22:37 ` Patchwork
  8 siblings, 0 replies; 22+ messages in thread
From: Patchwork @ 2020-08-19 22:37 UTC (permalink / raw)
  To: Nischal Varide; +Cc: intel-gfx


[-- Attachment #1.1: Type: text/plain, Size: 14757 bytes --]

== Series Details ==

Series: series starting with [1/5] Critical-KclockWork-Fixes-intel_atomi.c-PossibleNull
URL   : https://patchwork.freedesktop.org/series/80798/
State : success

== Summary ==

CI Bug Log - changes from CI_DRM_8907_full -> Patchwork_18371_full
====================================================

Summary
-------

  **SUCCESS**

  No regressions found.

  

Known issues
------------

  Here are the changes found in Patchwork_18371_full that come from known issues:

### IGT changes ###

#### Issues hit ####

  * igt@gem_mmap_gtt@fault-concurrent:
    - shard-iclb:         [PASS][1] -> [DMESG-WARN][2] ([i915#2165])
   [1]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-iclb6/igt@gem_mmap_gtt@fault-concurrent.html
   [2]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-iclb6/igt@gem_mmap_gtt@fault-concurrent.html

  * igt@gen9_exec_parse@allowed-all:
    - shard-apl:          [PASS][3] -> [DMESG-WARN][4] ([i915#1436] / [i915#1635] / [i915#716])
   [3]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-apl6/igt@gen9_exec_parse@allowed-all.html
   [4]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-apl7/igt@gen9_exec_parse@allowed-all.html

  * igt@i915_module_load@reload:
    - shard-iclb:         [PASS][5] -> [DMESG-WARN][6] ([i915#1982])
   [5]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-iclb6/igt@i915_module_load@reload.html
   [6]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-iclb6/igt@i915_module_load@reload.html

  * igt@kms_cursor_crc@pipe-a-cursor-suspend:
    - shard-kbl:          [PASS][7] -> [DMESG-WARN][8] ([i915#180]) +8 similar issues
   [7]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-kbl7/igt@kms_cursor_crc@pipe-a-cursor-suspend.html
   [8]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-kbl1/igt@kms_cursor_crc@pipe-a-cursor-suspend.html

  * igt@kms_cursor_edge_walk@pipe-b-128x128-bottom-edge:
    - shard-glk:          [PASS][9] -> [DMESG-WARN][10] ([i915#1982]) +1 similar issue
   [9]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-glk3/igt@kms_cursor_edge_walk@pipe-b-128x128-bottom-edge.html
   [10]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-glk4/igt@kms_cursor_edge_walk@pipe-b-128x128-bottom-edge.html

  * igt@kms_flip@2x-modeset-vs-vblank-race-interruptible@ab-vga1-hdmi-a1:
    - shard-hsw:          [PASS][11] -> [DMESG-WARN][12] ([i915#1982])
   [11]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-hsw4/igt@kms_flip@2x-modeset-vs-vblank-race-interruptible@ab-vga1-hdmi-a1.html
   [12]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-hsw1/igt@kms_flip@2x-modeset-vs-vblank-race-interruptible@ab-vga1-hdmi-a1.html

  * igt@kms_flip@flip-vs-expired-vblank@a-edp1:
    - shard-skl:          [PASS][13] -> [FAIL][14] ([i915#79])
   [13]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-skl4/igt@kms_flip@flip-vs-expired-vblank@a-edp1.html
   [14]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-skl7/igt@kms_flip@flip-vs-expired-vblank@a-edp1.html

  * igt@kms_flip@flip-vs-fences@a-edp1:
    - shard-skl:          [PASS][15] -> [DMESG-WARN][16] ([i915#1982]) +9 similar issues
   [15]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-skl9/igt@kms_flip@flip-vs-fences@a-edp1.html
   [16]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-skl9/igt@kms_flip@flip-vs-fences@a-edp1.html

  * igt@kms_flip@plain-flip-ts-check-interruptible@a-edp1:
    - shard-skl:          [PASS][17] -> [FAIL][18] ([i915#2122])
   [17]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-skl2/igt@kms_flip@plain-flip-ts-check-interruptible@a-edp1.html
   [18]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-skl1/igt@kms_flip@plain-flip-ts-check-interruptible@a-edp1.html

  * igt@kms_flip_tiling@flip-to-y-tiled:
    - shard-skl:          [PASS][19] -> [FAIL][20] ([i915#167])
   [19]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-skl9/igt@kms_flip_tiling@flip-to-y-tiled.html
   [20]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-skl9/igt@kms_flip_tiling@flip-to-y-tiled.html

  * igt@kms_frontbuffer_tracking@fbc-1p-offscren-pri-shrfb-draw-blt:
    - shard-tglb:         [PASS][21] -> [DMESG-WARN][22] ([i915#1982])
   [21]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-tglb1/igt@kms_frontbuffer_tracking@fbc-1p-offscren-pri-shrfb-draw-blt.html
   [22]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-tglb7/igt@kms_frontbuffer_tracking@fbc-1p-offscren-pri-shrfb-draw-blt.html

  * igt@kms_hdr@bpc-switch-suspend:
    - shard-skl:          [PASS][23] -> [FAIL][24] ([i915#1188])
   [23]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-skl1/igt@kms_hdr@bpc-switch-suspend.html
   [24]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-skl6/igt@kms_hdr@bpc-switch-suspend.html

  * igt@kms_plane_alpha_blend@pipe-b-coverage-7efc:
    - shard-skl:          [PASS][25] -> [FAIL][26] ([fdo#108145] / [i915#265]) +1 similar issue
   [25]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-skl10/igt@kms_plane_alpha_blend@pipe-b-coverage-7efc.html
   [26]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-skl2/igt@kms_plane_alpha_blend@pipe-b-coverage-7efc.html

  * igt@kms_psr@psr2_cursor_plane_onoff:
    - shard-iclb:         [PASS][27] -> [SKIP][28] ([fdo#109441]) +1 similar issue
   [27]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-iclb2/igt@kms_psr@psr2_cursor_plane_onoff.html
   [28]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-iclb5/igt@kms_psr@psr2_cursor_plane_onoff.html

  * igt@kms_setmode@basic:
    - shard-apl:          [PASS][29] -> [FAIL][30] ([i915#1635] / [i915#31])
   [29]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-apl8/igt@kms_setmode@basic.html
   [30]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-apl1/igt@kms_setmode@basic.html

  * igt@prime_mmap_coherency@write:
    - shard-apl:          [PASS][31] -> [DMESG-WARN][32] ([i915#1635] / [i915#1982])
   [31]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-apl8/igt@prime_mmap_coherency@write.html
   [32]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-apl2/igt@prime_mmap_coherency@write.html

  
#### Possible fixes ####

  * {igt@feature_discovery@psr2}:
    - shard-iclb:         [SKIP][33] ([i915#658]) -> [PASS][34]
   [33]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-iclb4/igt@feature_discovery@psr2.html
   [34]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-iclb2/igt@feature_discovery@psr2.html

  * igt@gem_exec_gttfill@all:
    - shard-glk:          [DMESG-WARN][35] ([i915#118] / [i915#95]) -> [PASS][36]
   [35]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-glk8/igt@gem_exec_gttfill@all.html
   [36]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-glk8/igt@gem_exec_gttfill@all.html

  * igt@gen9_exec_parse@allowed-single:
    - shard-skl:          [DMESG-WARN][37] ([i915#1436] / [i915#716]) -> [PASS][38]
   [37]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-skl7/igt@gen9_exec_parse@allowed-single.html
   [38]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-skl2/igt@gen9_exec_parse@allowed-single.html

  * igt@kms_cursor_legacy@basic-flip-after-cursor-varying-size:
    - shard-skl:          [DMESG-WARN][39] ([i915#1982]) -> [PASS][40] +9 similar issues
   [39]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-skl2/igt@kms_cursor_legacy@basic-flip-after-cursor-varying-size.html
   [40]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-skl1/igt@kms_cursor_legacy@basic-flip-after-cursor-varying-size.html
    - shard-tglb:         [DMESG-WARN][41] ([i915#1982]) -> [PASS][42] +1 similar issue
   [41]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-tglb5/igt@kms_cursor_legacy@basic-flip-after-cursor-varying-size.html
   [42]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-tglb8/igt@kms_cursor_legacy@basic-flip-after-cursor-varying-size.html

  * igt@kms_flip@2x-flip-vs-absolute-wf_vblank@bc-vga1-hdmi-a1:
    - shard-hsw:          [INCOMPLETE][43] ([CI#80]) -> [PASS][44]
   [43]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-hsw4/igt@kms_flip@2x-flip-vs-absolute-wf_vblank@bc-vga1-hdmi-a1.html
   [44]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-hsw8/igt@kms_flip@2x-flip-vs-absolute-wf_vblank@bc-vga1-hdmi-a1.html

  * igt@kms_flip@plain-flip-fb-recreate@a-edp1:
    - shard-skl:          [FAIL][45] ([i915#2122]) -> [PASS][46]
   [45]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-skl7/igt@kms_flip@plain-flip-fb-recreate@a-edp1.html
   [46]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-skl4/igt@kms_flip@plain-flip-fb-recreate@a-edp1.html

  * igt@kms_frontbuffer_tracking@fbc-1p-offscren-pri-shrfb-draw-blt:
    - shard-kbl:          [DMESG-WARN][47] ([i915#1982]) -> [PASS][48]
   [47]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-kbl2/igt@kms_frontbuffer_tracking@fbc-1p-offscren-pri-shrfb-draw-blt.html
   [48]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-kbl7/igt@kms_frontbuffer_tracking@fbc-1p-offscren-pri-shrfb-draw-blt.html

  * igt@kms_frontbuffer_tracking@fbc-suspend:
    - shard-kbl:          [INCOMPLETE][49] ([i915#155]) -> [PASS][50]
   [49]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-kbl2/igt@kms_frontbuffer_tracking@fbc-suspend.html
   [50]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-kbl1/igt@kms_frontbuffer_tracking@fbc-suspend.html

  * igt@kms_frontbuffer_tracking@psr-1p-primscrn-spr-indfb-draw-render:
    - shard-skl:          [FAIL][51] ([i915#49]) -> [PASS][52]
   [51]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-skl4/igt@kms_frontbuffer_tracking@psr-1p-primscrn-spr-indfb-draw-render.html
   [52]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-skl7/igt@kms_frontbuffer_tracking@psr-1p-primscrn-spr-indfb-draw-render.html

  * igt@kms_plane_alpha_blend@pipe-a-coverage-7efc:
    - shard-skl:          [FAIL][53] ([fdo#108145] / [i915#265]) -> [PASS][54]
   [53]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-skl4/igt@kms_plane_alpha_blend@pipe-a-coverage-7efc.html
   [54]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-skl7/igt@kms_plane_alpha_blend@pipe-a-coverage-7efc.html

  * igt@kms_psr@psr2_cursor_render:
    - shard-iclb:         [SKIP][55] ([fdo#109441]) -> [PASS][56] +2 similar issues
   [55]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-iclb4/igt@kms_psr@psr2_cursor_render.html
   [56]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-iclb2/igt@kms_psr@psr2_cursor_render.html

  * igt@kms_vblank@pipe-a-ts-continuation-suspend:
    - shard-kbl:          [DMESG-WARN][57] ([i915#180]) -> [PASS][58] +4 similar issues
   [57]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-kbl1/igt@kms_vblank@pipe-a-ts-continuation-suspend.html
   [58]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-kbl2/igt@kms_vblank@pipe-a-ts-continuation-suspend.html

  * igt@perf@blocking-parameterized:
    - shard-iclb:         [FAIL][59] ([i915#1542]) -> [PASS][60]
   [59]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-iclb4/igt@perf@blocking-parameterized.html
   [60]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-iclb2/igt@perf@blocking-parameterized.html

  * igt@prime_busy@after@vecs0:
    - shard-hsw:          [FAIL][61] ([i915#2258]) -> [PASS][62] +1 similar issue
   [61]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-hsw1/igt@prime_busy@after@vecs0.html
   [62]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-hsw4/igt@prime_busy@after@vecs0.html

  
#### Warnings ####

  * igt@i915_pm_dc@dc3co-vpb-simulation:
    - shard-iclb:         [SKIP][63] ([i915#658]) -> [SKIP][64] ([i915#588])
   [63]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8907/shard-iclb4/igt@i915_pm_dc@dc3co-vpb-simulation.html
   [64]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/shard-iclb2/igt@i915_pm_dc@dc3co-vpb-simulation.html

  
  {name}: This element is suppressed. This means it is ignored when computing
          the status of the difference (SUCCESS, WARNING, or FAILURE).

  [CI#80]: https://gitlab.freedesktop.org/gfx-ci/i915-infra/issues/80
  [fdo#108145]: https://bugs.freedesktop.org/show_bug.cgi?id=108145
  [fdo#109441]: https://bugs.freedesktop.org/show_bug.cgi?id=109441
  [i915#118]: https://gitlab.freedesktop.org/drm/intel/issues/118
  [i915#1188]: https://gitlab.freedesktop.org/drm/intel/issues/1188
  [i915#1436]: https://gitlab.freedesktop.org/drm/intel/issues/1436
  [i915#1542]: https://gitlab.freedesktop.org/drm/intel/issues/1542
  [i915#155]: https://gitlab.freedesktop.org/drm/intel/issues/155
  [i915#1635]: https://gitlab.freedesktop.org/drm/intel/issues/1635
  [i915#167]: https://gitlab.freedesktop.org/drm/intel/issues/167
  [i915#180]: https://gitlab.freedesktop.org/drm/intel/issues/180
  [i915#1982]: https://gitlab.freedesktop.org/drm/intel/issues/1982
  [i915#2122]: https://gitlab.freedesktop.org/drm/intel/issues/2122
  [i915#2165]: https://gitlab.freedesktop.org/drm/intel/issues/2165
  [i915#2258]: https://gitlab.freedesktop.org/drm/intel/issues/2258
  [i915#265]: https://gitlab.freedesktop.org/drm/intel/issues/265
  [i915#31]: https://gitlab.freedesktop.org/drm/intel/issues/31
  [i915#49]: https://gitlab.freedesktop.org/drm/intel/issues/49
  [i915#588]: https://gitlab.freedesktop.org/drm/intel/issues/588
  [i915#658]: https://gitlab.freedesktop.org/drm/intel/issues/658
  [i915#716]: https://gitlab.freedesktop.org/drm/intel/issues/716
  [i915#79]: https://gitlab.freedesktop.org/drm/intel/issues/79
  [i915#95]: https://gitlab.freedesktop.org/drm/intel/issues/95


Participating hosts (11 -> 11)
------------------------------

  No changes in participating hosts


Build changes
-------------

  * Linux: CI_DRM_8907 -> Patchwork_18371

  CI-20190529: 20190529
  CI_DRM_8907: f9f7b73d0f125316a33e35f3315f3a5955079e33 @ git://anongit.freedesktop.org/gfx-ci/linux
  IGT_5769: 4e5f76be680b65780204668e302026cf638decc9 @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools
  Patchwork_18371: 75fa8cc3edb3b94544251d89ce0e8a9899547e3d @ git://anongit.freedesktop.org/gfx-ci/linux
  piglit_4509: fdc5a4ca11124ab8413c7988896eec4c97336694 @ git://anongit.freedesktop.org/piglit

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_18371/index.html

[-- Attachment #1.2: Type: text/html, Size: 17350 bytes --]

[-- Attachment #2: Type: text/plain, Size: 160 bytes --]

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply	[flat|nested] 22+ messages in thread

* Re: [Intel-gfx] [PATCH 2/5] Critical-KlockWork-Fixes-intel_display.c-NullDeref
  2020-08-19  4:34 ` [Intel-gfx] [PATCH 2/5] Critical-KlockWork-Fixes-intel_display.c-NullDeref Nischal Varide
@ 2020-08-20  3:24     ` kernel test robot
  2020-08-25  9:25     ` Dan Carpenter
  1 sibling, 0 replies; 22+ messages in thread
From: kernel test robot @ 2020-08-20  3:24 UTC (permalink / raw)
  To: Nischal Varide, intel-gfx; +Cc: kbuild-all

Hi Nischal,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on drm-intel/for-linux-next]
[also build test WARNING on v5.9-rc1 next-20200819]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Nischal-Varide/Critical-KclockWork-Fixes-intel_atomi-c-PossibleNull/20200819-193249
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


cppcheck warnings: (new ones prefixed by >>)

        ^
   drivers/gpu/drm/i915/display/intel_display.c:4308:7: warning: Local variable src_w shadows outer variable [shadowVar]
     int src_w = drm_rect_width(&plane_state->uapi.src) >> 16;
         ^
   drivers/gpu/drm/i915/display/intel_display.c:4271:20: note: Shadowed declaration
    int src_x, src_y, src_w;
                      ^
   drivers/gpu/drm/i915/display/intel_display.c:4308:7: note: Shadow variable
     int src_w = drm_rect_width(&plane_state->uapi.src) >> 16;
         ^
   drivers/gpu/drm/i915/display/intel_display.c:11169:7: warning: Local variable tmp shadows outer variable [shadowVar]
     u32 tmp = intel_de_read(dev_priv,
         ^
   drivers/gpu/drm/i915/display/intel_display.c:11133:6: note: Shadowed declaration
    u32 tmp;
        ^
   drivers/gpu/drm/i915/display/intel_display.c:11169:7: note: Shadow variable
     u32 tmp = intel_de_read(dev_priv,
         ^
   drivers/gpu/drm/i915/display/intel_display.c:14246:4: warning: Local variable __ret_warn_on shadows outer variable [shadowVar]
      I915_STATE_WARN(active,
      ^
   drivers/gpu/drm/i915/display/intel_display.c:14237:3: note: Shadowed declaration
     I915_STATE_WARN(!!encoder->base.crtc != enabled,
     ^
   drivers/gpu/drm/i915/display/intel_display.c:14246:4: note: Shadow variable
      I915_STATE_WARN(active,
      ^
   drivers/gpu/drm/i915/display/intel_display.c:14293:3: warning: Local variable __ret_warn_on shadows outer variable [shadowVar]
     I915_STATE_WARN(active != new_crtc_state->hw.active,
     ^
   drivers/gpu/drm/i915/display/intel_display.c:14279:2: note: Shadowed declaration
    I915_STATE_WARN(new_crtc_state->hw.active != active,
    ^
   drivers/gpu/drm/i915/display/intel_display.c:14293:3: note: Shadow variable
     I915_STATE_WARN(active != new_crtc_state->hw.active,
     ^
   drivers/gpu/drm/i915/display/intel_display.c:14298:3: warning: Local variable __ret_warn_on shadows outer variable [shadowVar]
     I915_STATE_WARN(active && crtc->pipe != pipe,
     ^
   drivers/gpu/drm/i915/display/intel_display.c:14279:2: note: Shadowed declaration
    I915_STATE_WARN(new_crtc_state->hw.active != active,
    ^
   drivers/gpu/drm/i915/display/intel_display.c:14298:3: note: Shadow variable
     I915_STATE_WARN(active && crtc->pipe != pipe,
     ^
   drivers/gpu/drm/i915/display/intel_display.c:14315:3: warning: Local variable __ret_warn_on shadows outer variable [shadowVar]
     I915_STATE_WARN(1, "pipe state doesn't match!n");
     ^
   drivers/gpu/drm/i915/display/intel_display.c:14279:2: note: Shadowed declaration
    I915_STATE_WARN(new_crtc_state->hw.active != active,
    ^
   drivers/gpu/drm/i915/display/intel_display.c:14315:3: note: Shadow variable
     I915_STATE_WARN(1, "pipe state doesn't match!n");
     ^
   drivers/gpu/drm/i915/display/intel_display.c:18447:23: warning: Local variable crtc shadows outer variable [shadowVar]
      struct intel_crtc *crtc;
                         ^
   drivers/gpu/drm/i915/display/intel_display.c:18385:21: note: Shadowed declaration
    struct intel_crtc *crtc;
                       ^
   drivers/gpu/drm/i915/display/intel_display.c:18447:23: note: Shadow variable
      struct intel_crtc *crtc;
                         ^
   drivers/gpu/drm/i915/display/intel_display.c:6103:35: warning: Shifting signed 32-bit value by 31 bits is undefined behaviour [shiftTooManyBitsSigned]
    scaler_state->scaler_users |= (1 << scaler_user);
                                     ^
   drivers/gpu/drm/i915/display/intel_display.c:6127:6: note: Calling function 'skl_update_scaler', 3rd argument '31' value is 31
        SKL_CRTC_INDEX,
        ^
   drivers/gpu/drm/i915/display/intel_display.c:6103:35: note: Shift
    scaler_state->scaler_users |= (1 << scaler_user);
                                     ^
   drivers/gpu/drm/i915/display/intel_display.c:10477:36: warning: Shifting signed 32-bit value by 31 bits is undefined behaviour [shiftTooManyBitsSigned]
     scaler_state->scaler_users |= (1 << SKL_CRTC_INDEX);
                                      ^
   drivers/gpu/drm/i915/display/intel_display.c:10479:37: warning: Shifting signed 32-bit value by 31 bits is undefined behaviour [shiftTooManyBitsSigned]
     scaler_state->scaler_users &= ~(1 << SKL_CRTC_INDEX);
                                       ^
>> drivers/gpu/drm/i915/display/intel_display.c:11280:9: warning: Uninitialized variable: base [uninitvar]
    return base + plane_state->color_plane[0].offset;
           ^

# https://github.com/0day-ci/linux/commit/5d862961b8571914f726e947570316016ec67c5d
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Nischal-Varide/Critical-KclockWork-Fixes-intel_atomi-c-PossibleNull/20200819-193249
git checkout 5d862961b8571914f726e947570316016ec67c5d
vim +11280 drivers/gpu/drm/i915/display/intel_display.c

0e8ffe1bf81b07 drivers/gpu/drm/i915/intel_display.c         Daniel Vetter         2013-03-28  11263  
cd5dcbf1b26c60 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä         2017-03-27  11264  static u32 intel_cursor_base(const struct intel_plane_state *plane_state)
1cecc830e6b662 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä         2017-03-27  11265  {
1cecc830e6b662 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä         2017-03-27  11266  	struct drm_i915_private *dev_priv =
f90a85e76c2a89 drivers/gpu/drm/i915/display/intel_display.c Maarten Lankhorst     2019-10-31  11267  		to_i915(plane_state->uapi.plane->dev);
7b3cb17a48dc1b drivers/gpu/drm/i915/display/intel_display.c Maarten Lankhorst     2019-10-31  11268  	const struct drm_framebuffer *fb = plane_state->hw.fb;
1cecc830e6b662 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä         2017-03-27  11269  	const struct drm_i915_gem_object *obj = intel_fb_obj(fb);
1cecc830e6b662 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä         2017-03-27  11270  	u32 base;
1cecc830e6b662 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä         2017-03-27  11271  
5d862961b85719 drivers/gpu/drm/i915/display/intel_display.c Nischal Varide        2020-08-19  11272  	if (obj) {
5d862961b85719 drivers/gpu/drm/i915/display/intel_display.c Nischal Varide        2020-08-19  11273  
d53db442db36fd drivers/gpu/drm/i915/intel_display.c         José Roberto de Souza 2018-11-30  11274  		if (INTEL_INFO(dev_priv)->display.cursor_needs_physical)
c6790dc22312f5 drivers/gpu/drm/i915/display/intel_display.c Chris Wilson          2020-02-02  11275  			base = sg_dma_address(obj->mm.pages->sgl);
1cecc830e6b662 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä         2017-03-27  11276  		else
1cecc830e6b662 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä         2017-03-27  11277  			base = intel_plane_ggtt_offset(plane_state);
5d862961b85719 drivers/gpu/drm/i915/display/intel_display.c Nischal Varide        2020-08-19  11278  	}
1cecc830e6b662 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä         2017-03-27  11279  
30a027dcccc270 drivers/gpu/drm/i915/display/intel_display.c Ville Syrjälä         2019-10-15 @11280  	return base + plane_state->color_plane[0].offset;
1cecc830e6b662 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä         2017-03-27  11281  }
1cecc830e6b662 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä         2017-03-27  11282  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply	[flat|nested] 22+ messages in thread

* Re: [Intel-gfx] [PATCH 2/5] Critical-KlockWork-Fixes-intel_display.c-NullDeref
@ 2020-08-20  3:24     ` kernel test robot
  0 siblings, 0 replies; 22+ messages in thread
From: kernel test robot @ 2020-08-20  3:24 UTC (permalink / raw)
  To: kbuild-all

[-- Attachment #1: Type: text/plain, Size: 8414 bytes --]

Hi Nischal,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on drm-intel/for-linux-next]
[also build test WARNING on v5.9-rc1 next-20200819]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Nischal-Varide/Critical-KclockWork-Fixes-intel_atomi-c-PossibleNull/20200819-193249
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


cppcheck warnings: (new ones prefixed by >>)

        ^
   drivers/gpu/drm/i915/display/intel_display.c:4308:7: warning: Local variable src_w shadows outer variable [shadowVar]
     int src_w = drm_rect_width(&plane_state->uapi.src) >> 16;
         ^
   drivers/gpu/drm/i915/display/intel_display.c:4271:20: note: Shadowed declaration
    int src_x, src_y, src_w;
                      ^
   drivers/gpu/drm/i915/display/intel_display.c:4308:7: note: Shadow variable
     int src_w = drm_rect_width(&plane_state->uapi.src) >> 16;
         ^
   drivers/gpu/drm/i915/display/intel_display.c:11169:7: warning: Local variable tmp shadows outer variable [shadowVar]
     u32 tmp = intel_de_read(dev_priv,
         ^
   drivers/gpu/drm/i915/display/intel_display.c:11133:6: note: Shadowed declaration
    u32 tmp;
        ^
   drivers/gpu/drm/i915/display/intel_display.c:11169:7: note: Shadow variable
     u32 tmp = intel_de_read(dev_priv,
         ^
   drivers/gpu/drm/i915/display/intel_display.c:14246:4: warning: Local variable __ret_warn_on shadows outer variable [shadowVar]
      I915_STATE_WARN(active,
      ^
   drivers/gpu/drm/i915/display/intel_display.c:14237:3: note: Shadowed declaration
     I915_STATE_WARN(!!encoder->base.crtc != enabled,
     ^
   drivers/gpu/drm/i915/display/intel_display.c:14246:4: note: Shadow variable
      I915_STATE_WARN(active,
      ^
   drivers/gpu/drm/i915/display/intel_display.c:14293:3: warning: Local variable __ret_warn_on shadows outer variable [shadowVar]
     I915_STATE_WARN(active != new_crtc_state->hw.active,
     ^
   drivers/gpu/drm/i915/display/intel_display.c:14279:2: note: Shadowed declaration
    I915_STATE_WARN(new_crtc_state->hw.active != active,
    ^
   drivers/gpu/drm/i915/display/intel_display.c:14293:3: note: Shadow variable
     I915_STATE_WARN(active != new_crtc_state->hw.active,
     ^
   drivers/gpu/drm/i915/display/intel_display.c:14298:3: warning: Local variable __ret_warn_on shadows outer variable [shadowVar]
     I915_STATE_WARN(active && crtc->pipe != pipe,
     ^
   drivers/gpu/drm/i915/display/intel_display.c:14279:2: note: Shadowed declaration
    I915_STATE_WARN(new_crtc_state->hw.active != active,
    ^
   drivers/gpu/drm/i915/display/intel_display.c:14298:3: note: Shadow variable
     I915_STATE_WARN(active && crtc->pipe != pipe,
     ^
   drivers/gpu/drm/i915/display/intel_display.c:14315:3: warning: Local variable __ret_warn_on shadows outer variable [shadowVar]
     I915_STATE_WARN(1, "pipe state doesn't match!n");
     ^
   drivers/gpu/drm/i915/display/intel_display.c:14279:2: note: Shadowed declaration
    I915_STATE_WARN(new_crtc_state->hw.active != active,
    ^
   drivers/gpu/drm/i915/display/intel_display.c:14315:3: note: Shadow variable
     I915_STATE_WARN(1, "pipe state doesn't match!n");
     ^
   drivers/gpu/drm/i915/display/intel_display.c:18447:23: warning: Local variable crtc shadows outer variable [shadowVar]
      struct intel_crtc *crtc;
                         ^
   drivers/gpu/drm/i915/display/intel_display.c:18385:21: note: Shadowed declaration
    struct intel_crtc *crtc;
                       ^
   drivers/gpu/drm/i915/display/intel_display.c:18447:23: note: Shadow variable
      struct intel_crtc *crtc;
                         ^
   drivers/gpu/drm/i915/display/intel_display.c:6103:35: warning: Shifting signed 32-bit value by 31 bits is undefined behaviour [shiftTooManyBitsSigned]
    scaler_state->scaler_users |= (1 << scaler_user);
                                     ^
   drivers/gpu/drm/i915/display/intel_display.c:6127:6: note: Calling function 'skl_update_scaler', 3rd argument '31' value is 31
        SKL_CRTC_INDEX,
        ^
   drivers/gpu/drm/i915/display/intel_display.c:6103:35: note: Shift
    scaler_state->scaler_users |= (1 << scaler_user);
                                     ^
   drivers/gpu/drm/i915/display/intel_display.c:10477:36: warning: Shifting signed 32-bit value by 31 bits is undefined behaviour [shiftTooManyBitsSigned]
     scaler_state->scaler_users |= (1 << SKL_CRTC_INDEX);
                                      ^
   drivers/gpu/drm/i915/display/intel_display.c:10479:37: warning: Shifting signed 32-bit value by 31 bits is undefined behaviour [shiftTooManyBitsSigned]
     scaler_state->scaler_users &= ~(1 << SKL_CRTC_INDEX);
                                       ^
>> drivers/gpu/drm/i915/display/intel_display.c:11280:9: warning: Uninitialized variable: base [uninitvar]
    return base + plane_state->color_plane[0].offset;
           ^

# https://github.com/0day-ci/linux/commit/5d862961b8571914f726e947570316016ec67c5d
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Nischal-Varide/Critical-KclockWork-Fixes-intel_atomi-c-PossibleNull/20200819-193249
git checkout 5d862961b8571914f726e947570316016ec67c5d
vim +11280 drivers/gpu/drm/i915/display/intel_display.c

0e8ffe1bf81b07 drivers/gpu/drm/i915/intel_display.c         Daniel Vetter         2013-03-28  11263  
cd5dcbf1b26c60 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä         2017-03-27  11264  static u32 intel_cursor_base(const struct intel_plane_state *plane_state)
1cecc830e6b662 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä         2017-03-27  11265  {
1cecc830e6b662 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä         2017-03-27  11266  	struct drm_i915_private *dev_priv =
f90a85e76c2a89 drivers/gpu/drm/i915/display/intel_display.c Maarten Lankhorst     2019-10-31  11267  		to_i915(plane_state->uapi.plane->dev);
7b3cb17a48dc1b drivers/gpu/drm/i915/display/intel_display.c Maarten Lankhorst     2019-10-31  11268  	const struct drm_framebuffer *fb = plane_state->hw.fb;
1cecc830e6b662 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä         2017-03-27  11269  	const struct drm_i915_gem_object *obj = intel_fb_obj(fb);
1cecc830e6b662 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä         2017-03-27  11270  	u32 base;
1cecc830e6b662 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä         2017-03-27  11271  
5d862961b85719 drivers/gpu/drm/i915/display/intel_display.c Nischal Varide        2020-08-19  11272  	if (obj) {
5d862961b85719 drivers/gpu/drm/i915/display/intel_display.c Nischal Varide        2020-08-19  11273  
d53db442db36fd drivers/gpu/drm/i915/intel_display.c         José Roberto de Souza 2018-11-30  11274  		if (INTEL_INFO(dev_priv)->display.cursor_needs_physical)
c6790dc22312f5 drivers/gpu/drm/i915/display/intel_display.c Chris Wilson          2020-02-02  11275  			base = sg_dma_address(obj->mm.pages->sgl);
1cecc830e6b662 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä         2017-03-27  11276  		else
1cecc830e6b662 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä         2017-03-27  11277  			base = intel_plane_ggtt_offset(plane_state);
5d862961b85719 drivers/gpu/drm/i915/display/intel_display.c Nischal Varide        2020-08-19  11278  	}
1cecc830e6b662 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä         2017-03-27  11279  
30a027dcccc270 drivers/gpu/drm/i915/display/intel_display.c Ville Syrjälä         2019-10-15 @11280  	return base + plane_state->color_plane[0].offset;
1cecc830e6b662 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä         2017-03-27  11281  }
1cecc830e6b662 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä         2017-03-27  11282  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

^ permalink raw reply	[flat|nested] 22+ messages in thread

* Re: [Intel-gfx] [PATCH 5/5] Critical-KlockWorks-Fix-intel_crt.c-Possible-Null
  2020-08-19  4:34 ` [Intel-gfx] [PATCH 5/5] Critical-KlockWorks-Fix-intel_crt.c-Possible-Null Nischal Varide
@ 2020-08-24  6:27   ` Anshuman Gupta
  0 siblings, 0 replies; 22+ messages in thread
From: Anshuman Gupta @ 2020-08-24  6:27 UTC (permalink / raw)
  To: Nischal Varide; +Cc: intel-gfx

On 2020-08-19 at 10:04:09 +0530, Nischal Varide wrote:
> This Patch fixes the Critical KlockWork Errors and here a Possible Null
> Pointer Dereferencing is addressed with a Null Pointer check before
> Dereferencing
> 
> Signed-off-by: Nischal Varide <nischal.varide@intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_crt.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_crt.c b/drivers/gpu/drm/i915/display/intel_crt.c
> index 5b4510ce5693..b5777fdc8cac 100644
> --- a/drivers/gpu/drm/i915/display/intel_crt.c
> +++ b/drivers/gpu/drm/i915/display/intel_crt.c
> @@ -504,6 +504,9 @@ static bool valleyview_crt_detect_hotplug(struct drm_connector *connector)
>  	bool ret;
>  	u32 save_adpa;
>  
> +	if (!(dev_priv))
> +		return false;
> +
IMHO this should be treated as false alarm, since i915_driver_probe()
has allocated a drm_i915_private i915 priv structure and initilizes drm_dev
at early phase, if any erros over there it will be bailed out at early
stages. IOW to_i915(drm_dev) will never return null.
Thanks,
Anshuman Gupta.

>  	/*
>  	 * Doing a force trigger causes a hpd interrupt to get sent, which can
>  	 * get us stuck in a loop if we're polling:
> -- 
> 2.26.0
> 
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply	[flat|nested] 22+ messages in thread

* Re: [Intel-gfx] [PATCH 4/5] Critical-KlockWork-Fix-intel_tv.c-Possible-Null
  2020-08-19  4:34 ` [Intel-gfx] [PATCH 4/5] Critical-KlockWork-Fix-intel_tv.c-Possible-Null Nischal Varide
@ 2020-08-24  6:32   ` Anshuman Gupta
  2020-08-25  9:31     ` Dan Carpenter
  1 sibling, 0 replies; 22+ messages in thread
From: Anshuman Gupta @ 2020-08-24  6:32 UTC (permalink / raw)
  To: Nischal Varide; +Cc: intel-gfx

On 2020-08-19 at 10:04:08 +0530, Nischal Varide wrote:
> This patch fixes the Critical Klock work Error and in this case a
> Possible Null Pointer Dereference has been addressed with a Null check
> before dereferencing
> 
> Signed-off-by: Nischal Varide <nischal.varide@intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_tv.c | 17 ++++++++++-------
>  1 file changed, 10 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_tv.c b/drivers/gpu/drm/i915/display/intel_tv.c
> index 777032d9697b..5600d146ae81 100644
> --- a/drivers/gpu/drm/i915/display/intel_tv.c
> +++ b/drivers/gpu/drm/i915/display/intel_tv.c
> @@ -1836,17 +1836,20 @@ static int intel_tv_atomic_check(struct drm_connector *connector,
>  	struct drm_connector_state *old_state;
>  
>  	new_state = drm_atomic_get_new_connector_state(state, connector);
> -	if (!new_state->crtc)
> -		return 0;
> -
>  	old_state = drm_atomic_get_old_connector_state(state, connector);
>  	new_crtc_state = drm_atomic_get_new_crtc_state(state, new_state->crtc);
>  
> +	if (!(old_state && new_state && new_crtc_state))
> +		return 0;
> +
> +	if (!new_state->crtc)
> +		return 0;
> +
>  	if (old_state->tv.mode != new_state->tv.mode ||
> -	    old_state->tv.margins.left != new_state->tv.margins.left ||
> -	    old_state->tv.margins.right != new_state->tv.margins.right ||
> -	    old_state->tv.margins.top != new_state->tv.margins.top ||
> -	    old_state->tv.margins.bottom != new_state->tv.margins.bottom) {
> +		old_state->tv.margins.left != new_state->tv.margins.left ||
> +		old_state->tv.margins.right != new_state->tv.margins.right ||
> +		old_state->tv.margins.top != new_state->tv.margins.top ||
> +		old_state->tv.margins.bottom != new_state->tv.margins.bottom) {
This seems unwanted changes.
Thanks,
Anshuman.
>  		/* Force a modeset. */
>  
>  		new_crtc_state->connectors_changed = true;
> -- 
> 2.26.0
> 
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply	[flat|nested] 22+ messages in thread

* Re: [Intel-gfx] [PATCH 2/5] Critical-KlockWork-Fixes-intel_display.c-NullDeref
  2020-08-19  4:34 ` [Intel-gfx] [PATCH 2/5] Critical-KlockWork-Fixes-intel_display.c-NullDeref Nischal Varide
  2020-08-20  3:24     ` kernel test robot
@ 2020-08-25  9:25     ` Dan Carpenter
  1 sibling, 0 replies; 22+ messages in thread
From: Dan Carpenter @ 2020-08-25  9:25 UTC (permalink / raw)
  To: kbuild, Nischal Varide, intel-gfx; +Cc: kbuild-all

[-- Attachment #1: Type: text/plain, Size: 14340 bytes --]

Hi Nischal,

Thank you for the patch! Perhaps something to improve:

url:    https://github.com/0day-ci/linux/commits/Nischal-Varide/Critical-KclockWork-Fixes-intel_atomi-c-PossibleNull/20200819-193249
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: i386-randconfig-m021-20200824 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>

New smatch warnings:
drivers/gpu/drm/i915/display/intel_display.c:2271 intel_pin_and_fence_fb_obj() error: uninitialized symbol 'vma'.
drivers/gpu/drm/i915/display/intel_display.c:11280 intel_cursor_base() error: uninitialized symbol 'base'.

Old smatch warnings:
drivers/gpu/drm/i915/display/intel_display.c:6183 skl_update_scaler_plane() error: we previously assumed 'fb' could be null (see line 6167)

# https://github.com/0day-ci/linux/commit/5d862961b8571914f726e947570316016ec67c5d
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Nischal-Varide/Critical-KclockWork-Fixes-intel_atomi-c-PossibleNull/20200819-193249
git checkout 5d862961b8571914f726e947570316016ec67c5d
vim +/vma +2271 drivers/gpu/drm/i915/display/intel_display.c

058d88c4330f96 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-15  2217  struct i915_vma *
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2218  intel_pin_and_fence_fb_obj(struct drm_framebuffer *fb,
f5929c5309a6a4 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-09-07  2219  			   const struct i915_ggtt_view *view,
f7a02ad7d16b24 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2220  			   bool uses_fence,
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2221  			   unsigned long *out_flags)
6b95a207c1fd55 drivers/gpu/drm/i915/intel_display.c         Kristian Høgsberg      2009-11-18  2222  {
850c4cdc6c223d drivers/gpu/drm/i915/intel_display.c         Tvrtko Ursulin         2014-10-30  2223  	struct drm_device *dev = fb->dev;
fac5e23e3c385f drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-07-04  2224  	struct drm_i915_private *dev_priv = to_i915(dev);
850c4cdc6c223d drivers/gpu/drm/i915/intel_display.c         Tvrtko Ursulin         2014-10-30  2225  	struct drm_i915_gem_object *obj = intel_fb_obj(fb);
1d264d91befc31 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2019-01-14  2226  	intel_wakeref_t wakeref;
058d88c4330f96 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-15  2227  	struct i915_vma *vma;
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2228  	unsigned int pinctl;
6b95a207c1fd55 drivers/gpu/drm/i915/intel_display.c         Kristian Høgsberg      2009-11-18  2229  	u32 alignment;
6b95a207c1fd55 drivers/gpu/drm/i915/intel_display.c         Kristian Høgsberg      2009-11-18  2230  
e57291c2d39522 drivers/gpu/drm/i915/display/intel_display.c Pankaj Bharadiya       2020-02-20  2231  	if (drm_WARN_ON(dev, !i915_gem_object_is_framebuffer(obj)))
5a90606df7cb73 drivers/gpu/drm/i915/display/intel_display.c Chris Wilson           2019-09-02  2232  		return ERR_PTR(-EINVAL);
ebcdd39eafb1d8 drivers/gpu/drm/i915/intel_display.c         Matt Roper             2014-07-09  2233  
d88c4afddc5519 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2017-03-07  2234  	alignment = intel_surf_alignment(fb, 0);
e57291c2d39522 drivers/gpu/drm/i915/display/intel_display.c Pankaj Bharadiya       2020-02-20  2235  	if (drm_WARN_ON(dev, alignment && !is_power_of_2(alignment)))
7361bdb26c2ca6 drivers/gpu/drm/i915/display/intel_display.c Imre Deak              2019-12-25  2236  		return ERR_PTR(-EINVAL);
6b95a207c1fd55 drivers/gpu/drm/i915/intel_display.c         Kristian Høgsberg      2009-11-18  2237  
693db1842d864c drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2013-03-05  2238  	/* Note that the w/a also requires 64 PTE of padding following the
693db1842d864c drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2013-03-05  2239  	 * bo. We currently fill all unused PTE with the shadow page and so
693db1842d864c drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2013-03-05  2240  	 * we should always have valid PTE following the scanout preventing
693db1842d864c drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2013-03-05  2241  	 * the VT-d warning.
693db1842d864c drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2013-03-05  2242  	 */
48f112fed3b078 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-06-24  2243  	if (intel_scanout_needs_vtd_wa(dev_priv) && alignment < 256 * 1024)
693db1842d864c drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2013-03-05  2244  		alignment = 256 * 1024;
693db1842d864c drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2013-03-05  2245  
d6dd6843ff4a57 drivers/gpu/drm/i915/intel_display.c         Paulo Zanoni           2014-08-15  2246  	/*
d6dd6843ff4a57 drivers/gpu/drm/i915/intel_display.c         Paulo Zanoni           2014-08-15  2247  	 * Global gtt pte registers are special registers which actually forward
d6dd6843ff4a57 drivers/gpu/drm/i915/intel_display.c         Paulo Zanoni           2014-08-15  2248  	 * writes to a chunk of system memory. Which means that there is no risk
d6dd6843ff4a57 drivers/gpu/drm/i915/intel_display.c         Paulo Zanoni           2014-08-15  2249  	 * that the register values disappear as soon as we call
d6dd6843ff4a57 drivers/gpu/drm/i915/intel_display.c         Paulo Zanoni           2014-08-15  2250  	 * intel_runtime_pm_put(), so it is correct to wrap only the
d6dd6843ff4a57 drivers/gpu/drm/i915/intel_display.c         Paulo Zanoni           2014-08-15  2251  	 * pin/unpin/fence and not more.
d6dd6843ff4a57 drivers/gpu/drm/i915/intel_display.c         Paulo Zanoni           2014-08-15  2252  	 */
d858d5695f3897 drivers/gpu/drm/i915/intel_display.c         Daniele Ceraolo Spurio 2019-06-13  2253  	wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
d6dd6843ff4a57 drivers/gpu/drm/i915/intel_display.c         Paulo Zanoni           2014-08-15  2254  
9db529aac9381e drivers/gpu/drm/i915/intel_display.c         Daniel Vetter          2017-08-08  2255  	atomic_inc(&dev_priv->gpu_error.pending_fb_pin);
9db529aac9381e drivers/gpu/drm/i915/intel_display.c         Daniel Vetter          2017-08-08  2256  
8b1c78e06e6167 drivers/gpu/drm/i915/display/intel_display.c Chris Wilson           2019-12-06  2257  	/*
8b1c78e06e6167 drivers/gpu/drm/i915/display/intel_display.c Chris Wilson           2019-12-06  2258  	 * Valleyview is definitely limited to scanning out the first
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2259  	 * 512MiB. Lets presume this behaviour was inherited from the
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2260  	 * g4x display engine and that all earlier gen are similarly
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2261  	 * limited. Testing suggests that it is a little more
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2262  	 * complicated than this. For example, Cherryview appears quite
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2263  	 * happy to scanout from anywhere within its global aperture.
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2264  	 */
8b1c78e06e6167 drivers/gpu/drm/i915/display/intel_display.c Chris Wilson           2019-12-06  2265  	pinctl = 0;
b2ae318acdcaf1 drivers/gpu/drm/i915/intel_display.c         Rodrigo Vivi           2019-02-04  2266  	if (HAS_GMCH(dev_priv))
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2267  		pinctl |= PIN_MAPPABLE;
5d862961b85719 drivers/gpu/drm/i915/display/intel_display.c Nischal Varide         2020-08-19  2268  	if (obj)
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2269  		vma = i915_gem_object_pin_to_display_plane(obj,
f5929c5309a6a4 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-09-07  2270  			alignment, view, pinctl);

"vma" not initialized on else path.

49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18 @2271  	if (IS_ERR(vma))
                                                                                                                   ^^^

49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2272  		goto err;
6b95a207c1fd55 drivers/gpu/drm/i915/intel_display.c         Kristian Høgsberg      2009-11-18  2273  
f7a02ad7d16b24 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2274  	if (uses_fence && i915_vma_is_map_and_fenceable(vma)) {
85798ac9b35f8c drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2275  		int ret;
85798ac9b35f8c drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2276  
8b1c78e06e6167 drivers/gpu/drm/i915/display/intel_display.c Chris Wilson           2019-12-06  2277  		/*
8b1c78e06e6167 drivers/gpu/drm/i915/display/intel_display.c Chris Wilson           2019-12-06  2278  		 * Install a fence for tiled scan-out. Pre-i965 always needs a
6b95a207c1fd55 drivers/gpu/drm/i915/intel_display.c         Kristian Høgsberg      2009-11-18  2279  		 * fence, whereas 965+ only requires a fence if using
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2280  		 * framebuffer compression.  For simplicity, we always, when
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2281  		 * possible, install a fence as the cost is not that onerous.
842315ee7e416f drivers/gpu/drm/i915/intel_display.c         Maarten Lankhorst      2015-08-05  2282  		 *
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2283  		 * If we fail to fence the tiled scanout, then either the
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2284  		 * modeset will reject the change (which is highly unlikely as
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2285  		 * the affected systems, all but one, do not have unmappable
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2286  		 * space) or we will not be able to enable full powersaving
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2287  		 * techniques (also likely not to apply due to various limits
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2288  		 * FBC and the like impose on the size of the buffer, which
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2289  		 * presumably we violated anyway with this unmappable buffer).
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2290  		 * Anyway, it is presumably better to stumble onwards with
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2291  		 * something and try to run the system in a "less than optimal"
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2292  		 * mode that matches the user configuration.
842315ee7e416f drivers/gpu/drm/i915/intel_display.c         Maarten Lankhorst      2015-08-05  2293  		 */
85798ac9b35f8c drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2294  		ret = i915_vma_pin_fence(vma);
85798ac9b35f8c drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2295  		if (ret != 0 && INTEL_GEN(dev_priv) < 4) {
7509702bd8bd09 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-03-05  2296  			i915_gem_object_unpin_from_display_plane(vma);
85798ac9b35f8c drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2297  			vma = ERR_PTR(ret);
85798ac9b35f8c drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2298  			goto err;
85798ac9b35f8c drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2299  		}
85798ac9b35f8c drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2300  
85798ac9b35f8c drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2301  		if (ret == 0 && vma->fence)
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2302  			*out_flags |= PLANE_HAS_FENCE;
9807216f585fc6 drivers/gpu/drm/i915/intel_display.c         Vivek Kasireddy        2015-10-29  2303  	}
6b95a207c1fd55 drivers/gpu/drm/i915/intel_display.c         Kristian Høgsberg      2009-11-18  2304  
be1e341513ca23 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2017-01-16  2305  	i915_vma_get(vma);
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2306  err:
9db529aac9381e drivers/gpu/drm/i915/intel_display.c         Daniel Vetter          2017-08-08  2307  	atomic_dec(&dev_priv->gpu_error.pending_fb_pin);
d858d5695f3897 drivers/gpu/drm/i915/intel_display.c         Daniele Ceraolo Spurio 2019-06-13  2308  	intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
058d88c4330f96 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-15  2309  	return vma;
6b95a207c1fd55 drivers/gpu/drm/i915/intel_display.c         Kristian Høgsberg      2009-11-18  2310  }

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 40662 bytes --]

[-- Attachment #3: Type: text/plain, Size: 160 bytes --]

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply	[flat|nested] 22+ messages in thread

* Re: [Intel-gfx] [PATCH 2/5] Critical-KlockWork-Fixes-intel_display.c-NullDeref
@ 2020-08-25  9:25     ` Dan Carpenter
  0 siblings, 0 replies; 22+ messages in thread
From: Dan Carpenter @ 2020-08-25  9:25 UTC (permalink / raw)
  To: kbuild

[-- Attachment #1: Type: text/plain, Size: 14507 bytes --]

Hi Nischal,

Thank you for the patch! Perhaps something to improve:

url:    https://github.com/0day-ci/linux/commits/Nischal-Varide/Critical-KclockWork-Fixes-intel_atomi-c-PossibleNull/20200819-193249
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: i386-randconfig-m021-20200824 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>

New smatch warnings:
drivers/gpu/drm/i915/display/intel_display.c:2271 intel_pin_and_fence_fb_obj() error: uninitialized symbol 'vma'.
drivers/gpu/drm/i915/display/intel_display.c:11280 intel_cursor_base() error: uninitialized symbol 'base'.

Old smatch warnings:
drivers/gpu/drm/i915/display/intel_display.c:6183 skl_update_scaler_plane() error: we previously assumed 'fb' could be null (see line 6167)

# https://github.com/0day-ci/linux/commit/5d862961b8571914f726e947570316016ec67c5d
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Nischal-Varide/Critical-KclockWork-Fixes-intel_atomi-c-PossibleNull/20200819-193249
git checkout 5d862961b8571914f726e947570316016ec67c5d
vim +/vma +2271 drivers/gpu/drm/i915/display/intel_display.c

058d88c4330f96 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-15  2217  struct i915_vma *
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2218  intel_pin_and_fence_fb_obj(struct drm_framebuffer *fb,
f5929c5309a6a4 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-09-07  2219  			   const struct i915_ggtt_view *view,
f7a02ad7d16b24 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2220  			   bool uses_fence,
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2221  			   unsigned long *out_flags)
6b95a207c1fd55 drivers/gpu/drm/i915/intel_display.c         Kristian Høgsberg      2009-11-18  2222  {
850c4cdc6c223d drivers/gpu/drm/i915/intel_display.c         Tvrtko Ursulin         2014-10-30  2223  	struct drm_device *dev = fb->dev;
fac5e23e3c385f drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-07-04  2224  	struct drm_i915_private *dev_priv = to_i915(dev);
850c4cdc6c223d drivers/gpu/drm/i915/intel_display.c         Tvrtko Ursulin         2014-10-30  2225  	struct drm_i915_gem_object *obj = intel_fb_obj(fb);
1d264d91befc31 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2019-01-14  2226  	intel_wakeref_t wakeref;
058d88c4330f96 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-15  2227  	struct i915_vma *vma;
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2228  	unsigned int pinctl;
6b95a207c1fd55 drivers/gpu/drm/i915/intel_display.c         Kristian Høgsberg      2009-11-18  2229  	u32 alignment;
6b95a207c1fd55 drivers/gpu/drm/i915/intel_display.c         Kristian Høgsberg      2009-11-18  2230  
e57291c2d39522 drivers/gpu/drm/i915/display/intel_display.c Pankaj Bharadiya       2020-02-20  2231  	if (drm_WARN_ON(dev, !i915_gem_object_is_framebuffer(obj)))
5a90606df7cb73 drivers/gpu/drm/i915/display/intel_display.c Chris Wilson           2019-09-02  2232  		return ERR_PTR(-EINVAL);
ebcdd39eafb1d8 drivers/gpu/drm/i915/intel_display.c         Matt Roper             2014-07-09  2233  
d88c4afddc5519 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2017-03-07  2234  	alignment = intel_surf_alignment(fb, 0);
e57291c2d39522 drivers/gpu/drm/i915/display/intel_display.c Pankaj Bharadiya       2020-02-20  2235  	if (drm_WARN_ON(dev, alignment && !is_power_of_2(alignment)))
7361bdb26c2ca6 drivers/gpu/drm/i915/display/intel_display.c Imre Deak              2019-12-25  2236  		return ERR_PTR(-EINVAL);
6b95a207c1fd55 drivers/gpu/drm/i915/intel_display.c         Kristian Høgsberg      2009-11-18  2237  
693db1842d864c drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2013-03-05  2238  	/* Note that the w/a also requires 64 PTE of padding following the
693db1842d864c drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2013-03-05  2239  	 * bo. We currently fill all unused PTE with the shadow page and so
693db1842d864c drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2013-03-05  2240  	 * we should always have valid PTE following the scanout preventing
693db1842d864c drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2013-03-05  2241  	 * the VT-d warning.
693db1842d864c drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2013-03-05  2242  	 */
48f112fed3b078 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-06-24  2243  	if (intel_scanout_needs_vtd_wa(dev_priv) && alignment < 256 * 1024)
693db1842d864c drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2013-03-05  2244  		alignment = 256 * 1024;
693db1842d864c drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2013-03-05  2245  
d6dd6843ff4a57 drivers/gpu/drm/i915/intel_display.c         Paulo Zanoni           2014-08-15  2246  	/*
d6dd6843ff4a57 drivers/gpu/drm/i915/intel_display.c         Paulo Zanoni           2014-08-15  2247  	 * Global gtt pte registers are special registers which actually forward
d6dd6843ff4a57 drivers/gpu/drm/i915/intel_display.c         Paulo Zanoni           2014-08-15  2248  	 * writes to a chunk of system memory. Which means that there is no risk
d6dd6843ff4a57 drivers/gpu/drm/i915/intel_display.c         Paulo Zanoni           2014-08-15  2249  	 * that the register values disappear as soon as we call
d6dd6843ff4a57 drivers/gpu/drm/i915/intel_display.c         Paulo Zanoni           2014-08-15  2250  	 * intel_runtime_pm_put(), so it is correct to wrap only the
d6dd6843ff4a57 drivers/gpu/drm/i915/intel_display.c         Paulo Zanoni           2014-08-15  2251  	 * pin/unpin/fence and not more.
d6dd6843ff4a57 drivers/gpu/drm/i915/intel_display.c         Paulo Zanoni           2014-08-15  2252  	 */
d858d5695f3897 drivers/gpu/drm/i915/intel_display.c         Daniele Ceraolo Spurio 2019-06-13  2253  	wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
d6dd6843ff4a57 drivers/gpu/drm/i915/intel_display.c         Paulo Zanoni           2014-08-15  2254  
9db529aac9381e drivers/gpu/drm/i915/intel_display.c         Daniel Vetter          2017-08-08  2255  	atomic_inc(&dev_priv->gpu_error.pending_fb_pin);
9db529aac9381e drivers/gpu/drm/i915/intel_display.c         Daniel Vetter          2017-08-08  2256  
8b1c78e06e6167 drivers/gpu/drm/i915/display/intel_display.c Chris Wilson           2019-12-06  2257  	/*
8b1c78e06e6167 drivers/gpu/drm/i915/display/intel_display.c Chris Wilson           2019-12-06  2258  	 * Valleyview is definitely limited to scanning out the first
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2259  	 * 512MiB. Lets presume this behaviour was inherited from the
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2260  	 * g4x display engine and that all earlier gen are similarly
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2261  	 * limited. Testing suggests that it is a little more
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2262  	 * complicated than this. For example, Cherryview appears quite
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2263  	 * happy to scanout from anywhere within its global aperture.
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2264  	 */
8b1c78e06e6167 drivers/gpu/drm/i915/display/intel_display.c Chris Wilson           2019-12-06  2265  	pinctl = 0;
b2ae318acdcaf1 drivers/gpu/drm/i915/intel_display.c         Rodrigo Vivi           2019-02-04  2266  	if (HAS_GMCH(dev_priv))
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2267  		pinctl |= PIN_MAPPABLE;
5d862961b85719 drivers/gpu/drm/i915/display/intel_display.c Nischal Varide         2020-08-19  2268  	if (obj)
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2269  		vma = i915_gem_object_pin_to_display_plane(obj,
f5929c5309a6a4 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-09-07  2270  			alignment, view, pinctl);

"vma" not initialized on else path.

49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18 @2271  	if (IS_ERR(vma))
                                                                                                                   ^^^

49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2272  		goto err;
6b95a207c1fd55 drivers/gpu/drm/i915/intel_display.c         Kristian Høgsberg      2009-11-18  2273  
f7a02ad7d16b24 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2274  	if (uses_fence && i915_vma_is_map_and_fenceable(vma)) {
85798ac9b35f8c drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2275  		int ret;
85798ac9b35f8c drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2276  
8b1c78e06e6167 drivers/gpu/drm/i915/display/intel_display.c Chris Wilson           2019-12-06  2277  		/*
8b1c78e06e6167 drivers/gpu/drm/i915/display/intel_display.c Chris Wilson           2019-12-06  2278  		 * Install a fence for tiled scan-out. Pre-i965 always needs a
6b95a207c1fd55 drivers/gpu/drm/i915/intel_display.c         Kristian Høgsberg      2009-11-18  2279  		 * fence, whereas 965+ only requires a fence if using
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2280  		 * framebuffer compression.  For simplicity, we always, when
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2281  		 * possible, install a fence as the cost is not that onerous.
842315ee7e416f drivers/gpu/drm/i915/intel_display.c         Maarten Lankhorst      2015-08-05  2282  		 *
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2283  		 * If we fail to fence the tiled scanout, then either the
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2284  		 * modeset will reject the change (which is highly unlikely as
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2285  		 * the affected systems, all but one, do not have unmappable
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2286  		 * space) or we will not be able to enable full powersaving
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2287  		 * techniques (also likely not to apply due to various limits
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2288  		 * FBC and the like impose on the size of the buffer, which
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2289  		 * presumably we violated anyway with this unmappable buffer).
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2290  		 * Anyway, it is presumably better to stumble onwards with
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2291  		 * something and try to run the system in a "less than optimal"
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2292  		 * mode that matches the user configuration.
842315ee7e416f drivers/gpu/drm/i915/intel_display.c         Maarten Lankhorst      2015-08-05  2293  		 */
85798ac9b35f8c drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2294  		ret = i915_vma_pin_fence(vma);
85798ac9b35f8c drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2295  		if (ret != 0 && INTEL_GEN(dev_priv) < 4) {
7509702bd8bd09 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-03-05  2296  			i915_gem_object_unpin_from_display_plane(vma);
85798ac9b35f8c drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2297  			vma = ERR_PTR(ret);
85798ac9b35f8c drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2298  			goto err;
85798ac9b35f8c drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2299  		}
85798ac9b35f8c drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2300  
85798ac9b35f8c drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2301  		if (ret == 0 && vma->fence)
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2302  			*out_flags |= PLANE_HAS_FENCE;
9807216f585fc6 drivers/gpu/drm/i915/intel_display.c         Vivek Kasireddy        2015-10-29  2303  	}
6b95a207c1fd55 drivers/gpu/drm/i915/intel_display.c         Kristian Høgsberg      2009-11-18  2304  
be1e341513ca23 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2017-01-16  2305  	i915_vma_get(vma);
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2306  err:
9db529aac9381e drivers/gpu/drm/i915/intel_display.c         Daniel Vetter          2017-08-08  2307  	atomic_dec(&dev_priv->gpu_error.pending_fb_pin);
d858d5695f3897 drivers/gpu/drm/i915/intel_display.c         Daniele Ceraolo Spurio 2019-06-13  2308  	intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
058d88c4330f96 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-15  2309  	return vma;
6b95a207c1fd55 drivers/gpu/drm/i915/intel_display.c         Kristian Høgsberg      2009-11-18  2310  }

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

[-- Attachment #2: config.gz --]
[-- Type: application/gzip, Size: 40662 bytes --]

^ permalink raw reply	[flat|nested] 22+ messages in thread

* Re: [Intel-gfx] [PATCH 2/5] Critical-KlockWork-Fixes-intel_display.c-NullDeref
@ 2020-08-25  9:25     ` Dan Carpenter
  0 siblings, 0 replies; 22+ messages in thread
From: Dan Carpenter @ 2020-08-25  9:25 UTC (permalink / raw)
  To: kbuild-all

[-- Attachment #1: Type: text/plain, Size: 14507 bytes --]

Hi Nischal,

Thank you for the patch! Perhaps something to improve:

url:    https://github.com/0day-ci/linux/commits/Nischal-Varide/Critical-KclockWork-Fixes-intel_atomi-c-PossibleNull/20200819-193249
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: i386-randconfig-m021-20200824 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>

New smatch warnings:
drivers/gpu/drm/i915/display/intel_display.c:2271 intel_pin_and_fence_fb_obj() error: uninitialized symbol 'vma'.
drivers/gpu/drm/i915/display/intel_display.c:11280 intel_cursor_base() error: uninitialized symbol 'base'.

Old smatch warnings:
drivers/gpu/drm/i915/display/intel_display.c:6183 skl_update_scaler_plane() error: we previously assumed 'fb' could be null (see line 6167)

# https://github.com/0day-ci/linux/commit/5d862961b8571914f726e947570316016ec67c5d
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Nischal-Varide/Critical-KclockWork-Fixes-intel_atomi-c-PossibleNull/20200819-193249
git checkout 5d862961b8571914f726e947570316016ec67c5d
vim +/vma +2271 drivers/gpu/drm/i915/display/intel_display.c

058d88c4330f96 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-15  2217  struct i915_vma *
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2218  intel_pin_and_fence_fb_obj(struct drm_framebuffer *fb,
f5929c5309a6a4 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-09-07  2219  			   const struct i915_ggtt_view *view,
f7a02ad7d16b24 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2220  			   bool uses_fence,
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2221  			   unsigned long *out_flags)
6b95a207c1fd55 drivers/gpu/drm/i915/intel_display.c         Kristian Høgsberg      2009-11-18  2222  {
850c4cdc6c223d drivers/gpu/drm/i915/intel_display.c         Tvrtko Ursulin         2014-10-30  2223  	struct drm_device *dev = fb->dev;
fac5e23e3c385f drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-07-04  2224  	struct drm_i915_private *dev_priv = to_i915(dev);
850c4cdc6c223d drivers/gpu/drm/i915/intel_display.c         Tvrtko Ursulin         2014-10-30  2225  	struct drm_i915_gem_object *obj = intel_fb_obj(fb);
1d264d91befc31 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2019-01-14  2226  	intel_wakeref_t wakeref;
058d88c4330f96 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-15  2227  	struct i915_vma *vma;
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2228  	unsigned int pinctl;
6b95a207c1fd55 drivers/gpu/drm/i915/intel_display.c         Kristian Høgsberg      2009-11-18  2229  	u32 alignment;
6b95a207c1fd55 drivers/gpu/drm/i915/intel_display.c         Kristian Høgsberg      2009-11-18  2230  
e57291c2d39522 drivers/gpu/drm/i915/display/intel_display.c Pankaj Bharadiya       2020-02-20  2231  	if (drm_WARN_ON(dev, !i915_gem_object_is_framebuffer(obj)))
5a90606df7cb73 drivers/gpu/drm/i915/display/intel_display.c Chris Wilson           2019-09-02  2232  		return ERR_PTR(-EINVAL);
ebcdd39eafb1d8 drivers/gpu/drm/i915/intel_display.c         Matt Roper             2014-07-09  2233  
d88c4afddc5519 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2017-03-07  2234  	alignment = intel_surf_alignment(fb, 0);
e57291c2d39522 drivers/gpu/drm/i915/display/intel_display.c Pankaj Bharadiya       2020-02-20  2235  	if (drm_WARN_ON(dev, alignment && !is_power_of_2(alignment)))
7361bdb26c2ca6 drivers/gpu/drm/i915/display/intel_display.c Imre Deak              2019-12-25  2236  		return ERR_PTR(-EINVAL);
6b95a207c1fd55 drivers/gpu/drm/i915/intel_display.c         Kristian Høgsberg      2009-11-18  2237  
693db1842d864c drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2013-03-05  2238  	/* Note that the w/a also requires 64 PTE of padding following the
693db1842d864c drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2013-03-05  2239  	 * bo. We currently fill all unused PTE with the shadow page and so
693db1842d864c drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2013-03-05  2240  	 * we should always have valid PTE following the scanout preventing
693db1842d864c drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2013-03-05  2241  	 * the VT-d warning.
693db1842d864c drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2013-03-05  2242  	 */
48f112fed3b078 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-06-24  2243  	if (intel_scanout_needs_vtd_wa(dev_priv) && alignment < 256 * 1024)
693db1842d864c drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2013-03-05  2244  		alignment = 256 * 1024;
693db1842d864c drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2013-03-05  2245  
d6dd6843ff4a57 drivers/gpu/drm/i915/intel_display.c         Paulo Zanoni           2014-08-15  2246  	/*
d6dd6843ff4a57 drivers/gpu/drm/i915/intel_display.c         Paulo Zanoni           2014-08-15  2247  	 * Global gtt pte registers are special registers which actually forward
d6dd6843ff4a57 drivers/gpu/drm/i915/intel_display.c         Paulo Zanoni           2014-08-15  2248  	 * writes to a chunk of system memory. Which means that there is no risk
d6dd6843ff4a57 drivers/gpu/drm/i915/intel_display.c         Paulo Zanoni           2014-08-15  2249  	 * that the register values disappear as soon as we call
d6dd6843ff4a57 drivers/gpu/drm/i915/intel_display.c         Paulo Zanoni           2014-08-15  2250  	 * intel_runtime_pm_put(), so it is correct to wrap only the
d6dd6843ff4a57 drivers/gpu/drm/i915/intel_display.c         Paulo Zanoni           2014-08-15  2251  	 * pin/unpin/fence and not more.
d6dd6843ff4a57 drivers/gpu/drm/i915/intel_display.c         Paulo Zanoni           2014-08-15  2252  	 */
d858d5695f3897 drivers/gpu/drm/i915/intel_display.c         Daniele Ceraolo Spurio 2019-06-13  2253  	wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
d6dd6843ff4a57 drivers/gpu/drm/i915/intel_display.c         Paulo Zanoni           2014-08-15  2254  
9db529aac9381e drivers/gpu/drm/i915/intel_display.c         Daniel Vetter          2017-08-08  2255  	atomic_inc(&dev_priv->gpu_error.pending_fb_pin);
9db529aac9381e drivers/gpu/drm/i915/intel_display.c         Daniel Vetter          2017-08-08  2256  
8b1c78e06e6167 drivers/gpu/drm/i915/display/intel_display.c Chris Wilson           2019-12-06  2257  	/*
8b1c78e06e6167 drivers/gpu/drm/i915/display/intel_display.c Chris Wilson           2019-12-06  2258  	 * Valleyview is definitely limited to scanning out the first
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2259  	 * 512MiB. Lets presume this behaviour was inherited from the
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2260  	 * g4x display engine and that all earlier gen are similarly
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2261  	 * limited. Testing suggests that it is a little more
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2262  	 * complicated than this. For example, Cherryview appears quite
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2263  	 * happy to scanout from anywhere within its global aperture.
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2264  	 */
8b1c78e06e6167 drivers/gpu/drm/i915/display/intel_display.c Chris Wilson           2019-12-06  2265  	pinctl = 0;
b2ae318acdcaf1 drivers/gpu/drm/i915/intel_display.c         Rodrigo Vivi           2019-02-04  2266  	if (HAS_GMCH(dev_priv))
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2267  		pinctl |= PIN_MAPPABLE;
5d862961b85719 drivers/gpu/drm/i915/display/intel_display.c Nischal Varide         2020-08-19  2268  	if (obj)
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2269  		vma = i915_gem_object_pin_to_display_plane(obj,
f5929c5309a6a4 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-09-07  2270  			alignment, view, pinctl);

"vma" not initialized on else path.

49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18 @2271  	if (IS_ERR(vma))
                                                                                                                   ^^^

49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2272  		goto err;
6b95a207c1fd55 drivers/gpu/drm/i915/intel_display.c         Kristian Høgsberg      2009-11-18  2273  
f7a02ad7d16b24 drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2274  	if (uses_fence && i915_vma_is_map_and_fenceable(vma)) {
85798ac9b35f8c drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2275  		int ret;
85798ac9b35f8c drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2276  
8b1c78e06e6167 drivers/gpu/drm/i915/display/intel_display.c Chris Wilson           2019-12-06  2277  		/*
8b1c78e06e6167 drivers/gpu/drm/i915/display/intel_display.c Chris Wilson           2019-12-06  2278  		 * Install a fence for tiled scan-out. Pre-i965 always needs a
6b95a207c1fd55 drivers/gpu/drm/i915/intel_display.c         Kristian Høgsberg      2009-11-18  2279  		 * fence, whereas 965+ only requires a fence if using
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2280  		 * framebuffer compression.  For simplicity, we always, when
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2281  		 * possible, install a fence as the cost is not that onerous.
842315ee7e416f drivers/gpu/drm/i915/intel_display.c         Maarten Lankhorst      2015-08-05  2282  		 *
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2283  		 * If we fail to fence the tiled scanout, then either the
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2284  		 * modeset will reject the change (which is highly unlikely as
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2285  		 * the affected systems, all but one, do not have unmappable
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2286  		 * space) or we will not be able to enable full powersaving
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2287  		 * techniques (also likely not to apply due to various limits
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2288  		 * FBC and the like impose on the size of the buffer, which
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2289  		 * presumably we violated anyway with this unmappable buffer).
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2290  		 * Anyway, it is presumably better to stumble onwards with
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2291  		 * something and try to run the system in a "less than optimal"
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2292  		 * mode that matches the user configuration.
842315ee7e416f drivers/gpu/drm/i915/intel_display.c         Maarten Lankhorst      2015-08-05  2293  		 */
85798ac9b35f8c drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2294  		ret = i915_vma_pin_fence(vma);
85798ac9b35f8c drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2295  		if (ret != 0 && INTEL_GEN(dev_priv) < 4) {
7509702bd8bd09 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-03-05  2296  			i915_gem_object_unpin_from_display_plane(vma);
85798ac9b35f8c drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2297  			vma = ERR_PTR(ret);
85798ac9b35f8c drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2298  			goto err;
85798ac9b35f8c drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2299  		}
85798ac9b35f8c drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2300  
85798ac9b35f8c drivers/gpu/drm/i915/intel_display.c         Ville Syrjälä          2018-02-21  2301  		if (ret == 0 && vma->fence)
5935485f8eee35 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2018-02-20  2302  			*out_flags |= PLANE_HAS_FENCE;
9807216f585fc6 drivers/gpu/drm/i915/intel_display.c         Vivek Kasireddy        2015-10-29  2303  	}
6b95a207c1fd55 drivers/gpu/drm/i915/intel_display.c         Kristian Høgsberg      2009-11-18  2304  
be1e341513ca23 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2017-01-16  2305  	i915_vma_get(vma);
49ef5294cda256 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-18  2306  err:
9db529aac9381e drivers/gpu/drm/i915/intel_display.c         Daniel Vetter          2017-08-08  2307  	atomic_dec(&dev_priv->gpu_error.pending_fb_pin);
d858d5695f3897 drivers/gpu/drm/i915/intel_display.c         Daniele Ceraolo Spurio 2019-06-13  2308  	intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
058d88c4330f96 drivers/gpu/drm/i915/intel_display.c         Chris Wilson           2016-08-15  2309  	return vma;
6b95a207c1fd55 drivers/gpu/drm/i915/intel_display.c         Kristian Høgsberg      2009-11-18  2310  }

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

[-- Attachment #2: config.gz --]
[-- Type: application/gzip, Size: 40662 bytes --]

^ permalink raw reply	[flat|nested] 22+ messages in thread

* Re: [Intel-gfx] [PATCH 4/5] Critical-KlockWork-Fix-intel_tv.c-Possible-Null
  2020-08-19  4:34 ` [Intel-gfx] [PATCH 4/5] Critical-KlockWork-Fix-intel_tv.c-Possible-Null Nischal Varide
  2020-08-24  6:32   ` Anshuman Gupta
@ 2020-08-25  9:31     ` Dan Carpenter
  1 sibling, 0 replies; 22+ messages in thread
From: Dan Carpenter @ 2020-08-25  9:31 UTC (permalink / raw)
  To: kbuild, Nischal Varide, intel-gfx; +Cc: kbuild-all, Dan Carpenter

[-- Attachment #1: Type: text/plain, Size: 5061 bytes --]

Hi Nischal,

Thank you for the patch! Perhaps something to improve:

url:    https://github.com/0day-ci/linux/commits/Nischal-Varide/Critical-KclockWork-Fixes-intel_atomi-c-PossibleNull/20200819-193249
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: i386-randconfig-m021-20200824 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>

smatch warnings:
drivers/gpu/drm/i915/display/intel_tv.c:1842 intel_tv_atomic_check() warn: variable dereferenced before check 'new_state' (see line 1840)

# https://github.com/0day-ci/linux/commit/6fb528c1b424d3c8095085afa7e777ac5502450b
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Nischal-Varide/Critical-KclockWork-Fixes-intel_atomi-c-PossibleNull/20200819-193249
git checkout 6fb528c1b424d3c8095085afa7e777ac5502450b
vim +/new_state +1842 drivers/gpu/drm/i915/display/intel_tv.c

0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1831  static int intel_tv_atomic_check(struct drm_connector *connector,
6f3b62781bbd26 drivers/gpu/drm/i915/intel_tv.c         Sean Paul         2019-06-11  1832  				 struct drm_atomic_state *state)
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1833  {
6f3b62781bbd26 drivers/gpu/drm/i915/intel_tv.c         Sean Paul         2019-06-11  1834  	struct drm_connector_state *new_state;
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1835  	struct drm_crtc_state *new_crtc_state;
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1836  	struct drm_connector_state *old_state;
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1837  
6f3b62781bbd26 drivers/gpu/drm/i915/intel_tv.c         Sean Paul         2019-06-11  1838  	new_state = drm_atomic_get_new_connector_state(state, connector);
6f3b62781bbd26 drivers/gpu/drm/i915/intel_tv.c         Sean Paul         2019-06-11  1839  	old_state = drm_atomic_get_old_connector_state(state, connector);
6f3b62781bbd26 drivers/gpu/drm/i915/intel_tv.c         Sean Paul         2019-06-11 @1840  	new_crtc_state = drm_atomic_get_new_crtc_state(state, new_state->crtc);
                                                                                                                                                      ^^^^^^^^^^^^^^^
Dereference

0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1841  
6fb528c1b424d3 drivers/gpu/drm/i915/display/intel_tv.c Nischal Varide    2020-08-19 @1842  	if (!(old_state && new_state && new_crtc_state))
                                                                                                                   ^^^^^^^^^
Checked too late

6fb528c1b424d3 drivers/gpu/drm/i915/display/intel_tv.c Nischal Varide    2020-08-19  1843  		return 0;
6fb528c1b424d3 drivers/gpu/drm/i915/display/intel_tv.c Nischal Varide    2020-08-19  1844  
6fb528c1b424d3 drivers/gpu/drm/i915/display/intel_tv.c Nischal Varide    2020-08-19  1845  	if (!new_state->crtc)
6fb528c1b424d3 drivers/gpu/drm/i915/display/intel_tv.c Nischal Varide    2020-08-19  1846  		return 0;
6fb528c1b424d3 drivers/gpu/drm/i915/display/intel_tv.c Nischal Varide    2020-08-19  1847  
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1848  	if (old_state->tv.mode != new_state->tv.mode ||
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1849  		old_state->tv.margins.left != new_state->tv.margins.left ||
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1850  		old_state->tv.margins.right != new_state->tv.margins.right ||
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1851  		old_state->tv.margins.top != new_state->tv.margins.top ||
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1852  		old_state->tv.margins.bottom != new_state->tv.margins.bottom) {
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1853  		/* Force a modeset. */
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1854  
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1855  		new_crtc_state->connectors_changed = true;
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1856  	}
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1857  
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1858  	return 0;
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1859  }

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 40662 bytes --]

[-- Attachment #3: Type: text/plain, Size: 160 bytes --]

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply	[flat|nested] 22+ messages in thread

* Re: [Intel-gfx] [PATCH 4/5] Critical-KlockWork-Fix-intel_tv.c-Possible-Null
@ 2020-08-25  9:31     ` Dan Carpenter
  0 siblings, 0 replies; 22+ messages in thread
From: Dan Carpenter @ 2020-08-25  9:31 UTC (permalink / raw)
  To: kbuild

[-- Attachment #1: Type: text/plain, Size: 5124 bytes --]

Hi Nischal,

Thank you for the patch! Perhaps something to improve:

url:    https://github.com/0day-ci/linux/commits/Nischal-Varide/Critical-KclockWork-Fixes-intel_atomi-c-PossibleNull/20200819-193249
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: i386-randconfig-m021-20200824 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>

smatch warnings:
drivers/gpu/drm/i915/display/intel_tv.c:1842 intel_tv_atomic_check() warn: variable dereferenced before check 'new_state' (see line 1840)

# https://github.com/0day-ci/linux/commit/6fb528c1b424d3c8095085afa7e777ac5502450b
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Nischal-Varide/Critical-KclockWork-Fixes-intel_atomi-c-PossibleNull/20200819-193249
git checkout 6fb528c1b424d3c8095085afa7e777ac5502450b
vim +/new_state +1842 drivers/gpu/drm/i915/display/intel_tv.c

0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1831  static int intel_tv_atomic_check(struct drm_connector *connector,
6f3b62781bbd26 drivers/gpu/drm/i915/intel_tv.c         Sean Paul         2019-06-11  1832  				 struct drm_atomic_state *state)
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1833  {
6f3b62781bbd26 drivers/gpu/drm/i915/intel_tv.c         Sean Paul         2019-06-11  1834  	struct drm_connector_state *new_state;
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1835  	struct drm_crtc_state *new_crtc_state;
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1836  	struct drm_connector_state *old_state;
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1837  
6f3b62781bbd26 drivers/gpu/drm/i915/intel_tv.c         Sean Paul         2019-06-11  1838  	new_state = drm_atomic_get_new_connector_state(state, connector);
6f3b62781bbd26 drivers/gpu/drm/i915/intel_tv.c         Sean Paul         2019-06-11  1839  	old_state = drm_atomic_get_old_connector_state(state, connector);
6f3b62781bbd26 drivers/gpu/drm/i915/intel_tv.c         Sean Paul         2019-06-11 @1840  	new_crtc_state = drm_atomic_get_new_crtc_state(state, new_state->crtc);
                                                                                                                                                      ^^^^^^^^^^^^^^^
Dereference

0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1841  
6fb528c1b424d3 drivers/gpu/drm/i915/display/intel_tv.c Nischal Varide    2020-08-19 @1842  	if (!(old_state && new_state && new_crtc_state))
                                                                                                                   ^^^^^^^^^
Checked too late

6fb528c1b424d3 drivers/gpu/drm/i915/display/intel_tv.c Nischal Varide    2020-08-19  1843  		return 0;
6fb528c1b424d3 drivers/gpu/drm/i915/display/intel_tv.c Nischal Varide    2020-08-19  1844  
6fb528c1b424d3 drivers/gpu/drm/i915/display/intel_tv.c Nischal Varide    2020-08-19  1845  	if (!new_state->crtc)
6fb528c1b424d3 drivers/gpu/drm/i915/display/intel_tv.c Nischal Varide    2020-08-19  1846  		return 0;
6fb528c1b424d3 drivers/gpu/drm/i915/display/intel_tv.c Nischal Varide    2020-08-19  1847  
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1848  	if (old_state->tv.mode != new_state->tv.mode ||
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1849  		old_state->tv.margins.left != new_state->tv.margins.left ||
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1850  		old_state->tv.margins.right != new_state->tv.margins.right ||
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1851  		old_state->tv.margins.top != new_state->tv.margins.top ||
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1852  		old_state->tv.margins.bottom != new_state->tv.margins.bottom) {
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1853  		/* Force a modeset. */
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1854  
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1855  		new_crtc_state->connectors_changed = true;
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1856  	}
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1857  
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1858  	return 0;
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1859  }

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

[-- Attachment #2: config.gz --]
[-- Type: application/gzip, Size: 40662 bytes --]

^ permalink raw reply	[flat|nested] 22+ messages in thread

* Re: [Intel-gfx] [PATCH 4/5] Critical-KlockWork-Fix-intel_tv.c-Possible-Null
@ 2020-08-25  9:31     ` Dan Carpenter
  0 siblings, 0 replies; 22+ messages in thread
From: Dan Carpenter @ 2020-08-25  9:31 UTC (permalink / raw)
  To: kbuild-all

[-- Attachment #1: Type: text/plain, Size: 5124 bytes --]

Hi Nischal,

Thank you for the patch! Perhaps something to improve:

url:    https://github.com/0day-ci/linux/commits/Nischal-Varide/Critical-KclockWork-Fixes-intel_atomi-c-PossibleNull/20200819-193249
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: i386-randconfig-m021-20200824 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>

smatch warnings:
drivers/gpu/drm/i915/display/intel_tv.c:1842 intel_tv_atomic_check() warn: variable dereferenced before check 'new_state' (see line 1840)

# https://github.com/0day-ci/linux/commit/6fb528c1b424d3c8095085afa7e777ac5502450b
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Nischal-Varide/Critical-KclockWork-Fixes-intel_atomi-c-PossibleNull/20200819-193249
git checkout 6fb528c1b424d3c8095085afa7e777ac5502450b
vim +/new_state +1842 drivers/gpu/drm/i915/display/intel_tv.c

0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1831  static int intel_tv_atomic_check(struct drm_connector *connector,
6f3b62781bbd26 drivers/gpu/drm/i915/intel_tv.c         Sean Paul         2019-06-11  1832  				 struct drm_atomic_state *state)
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1833  {
6f3b62781bbd26 drivers/gpu/drm/i915/intel_tv.c         Sean Paul         2019-06-11  1834  	struct drm_connector_state *new_state;
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1835  	struct drm_crtc_state *new_crtc_state;
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1836  	struct drm_connector_state *old_state;
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1837  
6f3b62781bbd26 drivers/gpu/drm/i915/intel_tv.c         Sean Paul         2019-06-11  1838  	new_state = drm_atomic_get_new_connector_state(state, connector);
6f3b62781bbd26 drivers/gpu/drm/i915/intel_tv.c         Sean Paul         2019-06-11  1839  	old_state = drm_atomic_get_old_connector_state(state, connector);
6f3b62781bbd26 drivers/gpu/drm/i915/intel_tv.c         Sean Paul         2019-06-11 @1840  	new_crtc_state = drm_atomic_get_new_crtc_state(state, new_state->crtc);
                                                                                                                                                      ^^^^^^^^^^^^^^^
Dereference

0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1841  
6fb528c1b424d3 drivers/gpu/drm/i915/display/intel_tv.c Nischal Varide    2020-08-19 @1842  	if (!(old_state && new_state && new_crtc_state))
                                                                                                                   ^^^^^^^^^
Checked too late

6fb528c1b424d3 drivers/gpu/drm/i915/display/intel_tv.c Nischal Varide    2020-08-19  1843  		return 0;
6fb528c1b424d3 drivers/gpu/drm/i915/display/intel_tv.c Nischal Varide    2020-08-19  1844  
6fb528c1b424d3 drivers/gpu/drm/i915/display/intel_tv.c Nischal Varide    2020-08-19  1845  	if (!new_state->crtc)
6fb528c1b424d3 drivers/gpu/drm/i915/display/intel_tv.c Nischal Varide    2020-08-19  1846  		return 0;
6fb528c1b424d3 drivers/gpu/drm/i915/display/intel_tv.c Nischal Varide    2020-08-19  1847  
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1848  	if (old_state->tv.mode != new_state->tv.mode ||
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1849  		old_state->tv.margins.left != new_state->tv.margins.left ||
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1850  		old_state->tv.margins.right != new_state->tv.margins.right ||
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1851  		old_state->tv.margins.top != new_state->tv.margins.top ||
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1852  		old_state->tv.margins.bottom != new_state->tv.margins.bottom) {
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1853  		/* Force a modeset. */
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1854  
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1855  		new_crtc_state->connectors_changed = true;
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1856  	}
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1857  
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1858  	return 0;
0e891b3f447f4d drivers/gpu/drm/i915/intel_tv.c         Maarten Lankhorst 2017-04-10  1859  }

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

[-- Attachment #2: config.gz --]
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^ permalink raw reply	[flat|nested] 22+ messages in thread

end of thread, other threads:[~2020-08-25  9:34 UTC | newest]

Thread overview: 22+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-08-19  4:34 [Intel-gfx] [PATCH 1/5] Critical-KclockWork-Fixes-intel_atomi.c-PossibleNull Nischal Varide
2020-08-19  4:34 ` [Intel-gfx] [PATCH 2/5] Critical-KlockWork-Fixes-intel_display.c-NullDeref Nischal Varide
2020-08-20  3:24   ` kernel test robot
2020-08-20  3:24     ` kernel test robot
2020-08-25  9:25   ` Dan Carpenter
2020-08-25  9:25     ` Dan Carpenter
2020-08-25  9:25     ` Dan Carpenter
2020-08-19  4:34 ` [Intel-gfx] [PATCH 3/5] Critical-KlockWorks-Fix-intel_sdvo.c-Possible-Null Nischal Varide
2020-08-19  4:34 ` [Intel-gfx] [PATCH 4/5] Critical-KlockWork-Fix-intel_tv.c-Possible-Null Nischal Varide
2020-08-24  6:32   ` Anshuman Gupta
2020-08-25  9:31   ` Dan Carpenter
2020-08-25  9:31     ` Dan Carpenter
2020-08-25  9:31     ` Dan Carpenter
2020-08-19  4:34 ` [Intel-gfx] [PATCH 5/5] Critical-KlockWorks-Fix-intel_crt.c-Possible-Null Nischal Varide
2020-08-24  6:27   ` Anshuman Gupta
2020-08-19 11:52 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for series starting with [1/5] Critical-KclockWork-Fixes-intel_atomi.c-PossibleNull Patchwork
2020-08-19 12:09 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2020-08-19 18:47 ` [Intel-gfx] [PATCH 1/5] Critical-KclockWork-Fixes-intel_atomi.c-PossibleNull kernel test robot
2020-08-19 18:47   ` kernel test robot
2020-08-19 18:47 ` [Intel-gfx] [PATCH] fix boolreturn.cocci warnings kernel test robot
2020-08-19 18:47   ` kernel test robot
2020-08-19 22:37 ` [Intel-gfx] ✓ Fi.CI.IGT: success for series starting with [1/5] Critical-KclockWork-Fixes-intel_atomi.c-PossibleNull Patchwork

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