From: Hersen Wu <hersenxs.wu@xxxxxxx>
[WHY]
Coverity reports OVERRUN issues within amdgpu_dm
interrupt registers. Do not check index value before
access array. Do not check NULL pointer.
[HOW]
Add index value check for array. Add check for
pointer from amdgpu_dm_irq_register_interrupt.
Reviewed-by: Harry Wentland <harry.wentland@xxxxxxx>
Acked-by: Tom Chung <chiahsuan.chung@xxxxxxx>
Signed-off-by: Hersen Wu <hersenxs.wu@xxxxxxx>
---
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 169 +++++++++++++-----
1 file changed, 128 insertions(+), 41 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 5d4716d7a55e..d922751995fc 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -3584,7 +3584,7 @@ static void handle_hpd_rx_irq(void *param)
mutex_unlock(&aconnector->hpd_lock);
}
-static void register_hpd_handlers(struct amdgpu_device *adev)
+static int register_hpd_handlers(struct amdgpu_device *adev)
{
struct drm_device *dev = adev_to_drm(adev);
struct drm_connector *connector;
@@ -3596,11 +3596,17 @@ static void register_hpd_handlers(struct amdgpu_device *adev)
int_params.current_polarity = INTERRUPT_POLARITY_DEFAULT;
if (dc_is_dmub_outbox_supported(adev->dm.dc)) {
- if (!register_dmub_notify_callback(adev, DMUB_NOTIFICATION_HPD, dmub_hpd_callback, true))
+ if (!register_dmub_notify_callback(adev, DMUB_NOTIFICATION_HPD,
+ dmub_hpd_callback, true)) {
DRM_ERROR("amdgpu: fail to register dmub hpd callback");
+ return -EINVAL;
+ }
- if (!register_dmub_notify_callback(adev, DMUB_NOTIFICATION_HPD_IRQ, dmub_hpd_callback, true))
+ if (!register_dmub_notify_callback(adev, DMUB_NOTIFICATION_HPD_IRQ,
+ dmub_hpd_callback, true)) {
DRM_ERROR("amdgpu: fail to register dmub hpd callback");
+ return -EINVAL;
+ }
}
list_for_each_entry(connector,
@@ -3616,9 +3622,16 @@ static void register_hpd_handlers(struct amdgpu_device *adev)
int_params.int_context = INTERRUPT_LOW_IRQ_CONTEXT;
int_params.irq_source = dc_link->irq_source_hpd;
- amdgpu_dm_irq_register_interrupt(adev, &int_params,
- handle_hpd_irq,
- (void *) aconnector);
+ if (int_params.irq_source == DC_IRQ_SOURCE_INVALID ||
+ int_params.irq_source < DC_IRQ_SOURCE_HPD1 ||
+ int_params.irq_source > DC_IRQ_SOURCE_HPD6) {
+ DRM_ERROR("Failed to register hpd irq!\n");
+ return -EINVAL;
+ }
+
+ if (!amdgpu_dm_irq_register_interrupt(adev, &int_params,
+ handle_hpd_irq, (void *) aconnector))
+ return -ENOMEM;
}
if (dc_link->irq_source_hpd_rx != DC_IRQ_SOURCE_INVALID) {
@@ -3627,11 +3640,19 @@ static void register_hpd_handlers(struct amdgpu_device *adev)
int_params.int_context = INTERRUPT_LOW_IRQ_CONTEXT;
int_params.irq_source = dc_link->irq_source_hpd_rx;
- amdgpu_dm_irq_register_interrupt(adev, &int_params,
- handle_hpd_rx_irq,
- (void *) aconnector);
+ if (int_params.irq_source == DC_IRQ_SOURCE_INVALID ||
+ int_params.irq_source < DC_IRQ_SOURCE_HPD1RX ||
+ int_params.irq_source > DC_IRQ_SOURCE_HPD6RX) {
+ DRM_ERROR("Failed to register hpd rx irq!\n");
+ return -EINVAL;
+ }
+
+ if (!amdgpu_dm_irq_register_interrupt(adev, &int_params,
+ handle_hpd_rx_irq, (void *) aconnector))
+ return -ENOMEM;
}
}
+ return 0;
}
#if defined(CONFIG_DRM_AMD_DC_SI)
@@ -3672,13 +3693,21 @@ static int dce60_register_irq_handlers(struct amdgpu_device *adev)
int_params.irq_source =
dc_interrupt_to_irq_source(dc, i + 1, 0);
+ if (int_params.irq_source == DC_IRQ_SOURCE_INVALID ||
+ int_params.irq_source < DC_IRQ_SOURCE_VBLANK1 ||
+ int_params.irq_source > DC_IRQ_SOURCE_VBLANK6) {
+ DRM_ERROR("Failed to register vblank irq!\n");
+ return -EINVAL;
+ }
+
c_irq_params = &adev->dm.vblank_params[int_params.irq_source - DC_IRQ_SOURCE_VBLANK1];
c_irq_params->adev = adev;
c_irq_params->irq_src = int_params.irq_source;
- amdgpu_dm_irq_register_interrupt(adev, &int_params,
- dm_crtc_high_irq, c_irq_params);
+ if (!amdgpu_dm_irq_register_interrupt(adev, &int_params,
+ dm_crtc_high_irq, c_irq_params))
+ return -ENOMEM;
}
/* Use GRPH_PFLIP interrupt */
@@ -3694,14 +3723,21 @@ static int dce60_register_irq_handlers(struct amdgpu_device *adev)
int_params.irq_source =
dc_interrupt_to_irq_source(dc, i, 0);
+ if (int_params.irq_source == DC_IRQ_SOURCE_INVALID ||
+ int_params.irq_source < DC_IRQ_SOURCE_PFLIP_FIRST ||
+ int_params.irq_source > DC_IRQ_SOURCE_PFLIP_LAST) {
+ DRM_ERROR("Failed to register pflip irq!\n");
+ return -EINVAL;
+ }
+
c_irq_params = &adev->dm.pflip_params[int_params.irq_source - DC_IRQ_SOURCE_PFLIP_FIRST];
c_irq_params->adev = adev;
c_irq_params->irq_src = int_params.irq_source;
- amdgpu_dm_irq_register_interrupt(adev, &int_params,
- dm_pflip_high_irq, c_irq_params);
-
+ if (!amdgpu_dm_irq_register_interrupt(adev, &int_params,
+ dm_pflip_high_irq, c_irq_params))
+ return -ENOMEM;
}
/* HPD */
@@ -3712,9 +3748,9 @@ static int dce60_register_irq_handlers(struct amdgpu_device *adev)
return r;
}
- register_hpd_handlers(adev);
+ r = register_hpd_handlers(adev);
- return 0;
+ return r;
}
#endif
@@ -3758,13 +3794,21 @@ static int dce110_register_irq_handlers(struct amdgpu_device *adev)
int_params.irq_source =
dc_interrupt_to_irq_source(dc, i, 0);
+ if (int_params.irq_source == DC_IRQ_SOURCE_INVALID ||
+ int_params.irq_source < DC_IRQ_SOURCE_VBLANK1 ||
+ int_params.irq_source > DC_IRQ_SOURCE_VBLANK6) {
+ DRM_ERROR("Failed to register vblank irq!\n");
+ return -EINVAL;
+ }
+
c_irq_params = &adev->dm.vblank_params[int_params.irq_source - DC_IRQ_SOURCE_VBLANK1];
c_irq_params->adev = adev;
c_irq_params->irq_src = int_params.irq_source;
- amdgpu_dm_irq_register_interrupt(adev, &int_params,
- dm_crtc_high_irq, c_irq_params);
+ if (!amdgpu_dm_irq_register_interrupt(adev, &int_params,
+ dm_crtc_high_irq, c_irq_params))
+ return -ENOMEM;
}
/* Use VUPDATE interrupt */
@@ -3779,13 +3823,21 @@ static int dce110_register_irq_handlers(struct amdgpu_device *adev)
int_params.irq_source =
dc_interrupt_to_irq_source(dc, i, 0);
+ if (int_params.irq_source == DC_IRQ_SOURCE_INVALID ||
+ int_params.irq_source < DC_IRQ_SOURCE_VUPDATE1 ||
+ int_params.irq_source > DC_IRQ_SOURCE_VUPDATE6) {
+ DRM_ERROR("Failed to register vupdate irq!\n");
+ return -EINVAL;
+ }
+
c_irq_params = &adev->dm.vupdate_params[int_params.irq_source - DC_IRQ_SOURCE_VUPDATE1];
c_irq_params->adev = adev;
c_irq_params->irq_src = int_params.irq_source;
- amdgpu_dm_irq_register_interrupt(adev, &int_params,
- dm_vupdate_high_irq, c_irq_params);
+ if (!amdgpu_dm_irq_register_interrupt(adev, &int_params,
+ dm_vupdate_high_irq, c_irq_params))
+ return -ENOMEM;
}
/* Use GRPH_PFLIP interrupt */
@@ -3801,14 +3853,21 @@ static int dce110_register_irq_handlers(struct amdgpu_device *adev)
int_params.irq_source =
dc_interrupt_to_irq_source(dc, i, 0);
+ if (int_params.irq_source == DC_IRQ_SOURCE_INVALID ||
+ int_params.irq_source < DC_IRQ_SOURCE_PFLIP_FIRST ||
+ int_params.irq_source > DC_IRQ_SOURCE_PFLIP_LAST) {
+ DRM_ERROR("Failed to register pflip irq!\n");
+ return -EINVAL;
+ }
+
c_irq_params = &adev->dm.pflip_params[int_params.irq_source - DC_IRQ_SOURCE_PFLIP_FIRST];
c_irq_params->adev = adev;
c_irq_params->irq_src = int_params.irq_source;
- amdgpu_dm_irq_register_interrupt(adev, &int_params,
- dm_pflip_high_irq, c_irq_params);
-
+ if (!amdgpu_dm_irq_register_interrupt(adev, &int_params,
+ dm_pflip_high_irq, c_irq_params))
+ return -ENOMEM;
}
/* HPD */
@@ -3819,9 +3878,9 @@ static int dce110_register_irq_handlers(struct amdgpu_device *adev)
return r;
}
- register_hpd_handlers(adev);
+ r = register_hpd_handlers(adev);
- return 0;
+ return r;
}
/* Register IRQ sources and initialize IRQ callbacks */
@@ -3873,13 +3932,21 @@ static int dcn10_register_irq_handlers(struct amdgpu_device *adev)
int_params.irq_source =
dc_interrupt_to_irq_source(dc, i, 0);
+ if (int_params.irq_source == DC_IRQ_SOURCE_INVALID ||
+ int_params.irq_source < DC_IRQ_SOURCE_VBLANK1 ||
+ int_params.irq_source > DC_IRQ_SOURCE_VBLANK6) {
+ DRM_ERROR("Failed to register vblank irq!\n");
+ return -EINVAL;
+ }
+
c_irq_params = &adev->dm.vblank_params[int_params.irq_source - DC_IRQ_SOURCE_VBLANK1];
c_irq_params->adev = adev;
c_irq_params->irq_src = int_params.irq_source;
- amdgpu_dm_irq_register_interrupt(
- adev, &int_params, dm_crtc_high_irq, c_irq_params);
+ if (!amdgpu_dm_irq_register_interrupt(adev, &int_params,
+ dm_crtc_high_irq, c_irq_params))
+ return -ENOMEM;
}
/* Use otg vertical line interrupt */
@@ -3897,9 +3964,11 @@ static int dcn10_register_irq_handlers(struct amdgpu_device *adev)
int_params.irq_source =
dc_interrupt_to_irq_source(dc, vrtl_int_srcid[i], 0);
- if (int_params.irq_source == DC_IRQ_SOURCE_INVALID) {
- DRM_ERROR("Failed to register vline0 irq %d!\n", vrtl_int_srcid[i]);
- break;
+ if (int_params.irq_source == DC_IRQ_SOURCE_INVALID ||
+ int_params.irq_source < DC_IRQ_SOURCE_DC1_VLINE0 ||
+ int_params.irq_source > DC_IRQ_SOURCE_DC6_VLINE0) {
+ DRM_ERROR("Failed to register vline0 irq!\n");
+ return -EINVAL;
}
c_irq_params = &adev->dm.vline0_params[int_params.irq_source
@@ -3908,8 +3977,10 @@ static int dcn10_register_irq_handlers(struct amdgpu_device *adev)
c_irq_params->adev = adev;
c_irq_params->irq_src = int_params.irq_source;
- amdgpu_dm_irq_register_interrupt(adev, &int_params,
- dm_dcn_vertical_interrupt0_high_irq, c_irq_params);
+ if (!amdgpu_dm_irq_register_interrupt(adev, &int_params,
+ dm_dcn_vertical_interrupt0_high_irq,
+ c_irq_params))
+ return -ENOMEM;
}
#endif
@@ -3932,13 +4003,21 @@ static int dcn10_register_irq_handlers(struct amdgpu_device *adev)
int_params.irq_source =
dc_interrupt_to_irq_source(dc, i, 0);
+ if (int_params.irq_source == DC_IRQ_SOURCE_INVALID ||
+ int_params.irq_source < DC_IRQ_SOURCE_VUPDATE1 ||
+ int_params.irq_source > DC_IRQ_SOURCE_VUPDATE6) {
+ DRM_ERROR("Failed to register vupdate irq!\n");
+ return -EINVAL;
+ }
+
c_irq_params = &adev->dm.vupdate_params[int_params.irq_source - DC_IRQ_SOURCE_VUPDATE1];
c_irq_params->adev = adev;
c_irq_params->irq_src = int_params.irq_source;
- amdgpu_dm_irq_register_interrupt(adev, &int_params,
- dm_vupdate_high_irq, c_irq_params);
+ if (!amdgpu_dm_irq_register_interrupt(adev, &int_params,
+ dm_vupdate_high_irq, c_irq_params))
+ return -ENOMEM;
}
/* Use GRPH_PFLIP interrupt */
@@ -3955,14 +4034,21 @@ static int dcn10_register_irq_handlers(struct amdgpu_device *adev)
int_params.irq_source =
dc_interrupt_to_irq_source(dc, i, 0);
+ if (int_params.irq_source == DC_IRQ_SOURCE_INVALID ||
+ int_params.irq_source < DC_IRQ_SOURCE_PFLIP_FIRST ||
+ int_params.irq_source > DC_IRQ_SOURCE_PFLIP_LAST) {
+ DRM_ERROR("Failed to register pflip irq!\n");
+ return -EINVAL;
+ }
+
c_irq_params = &adev->dm.pflip_params[int_params.irq_source - DC_IRQ_SOURCE_PFLIP_FIRST];
c_irq_params->adev = adev;
c_irq_params->irq_src = int_params.irq_source;
- amdgpu_dm_irq_register_interrupt(adev, &int_params,
- dm_pflip_high_irq, c_irq_params);
-
+ if (!amdgpu_dm_irq_register_interrupt(adev, &int_params,
+ dm_pflip_high_irq, c_irq_params))
+ return -ENOMEM;
}
/* HPD */
@@ -3973,9 +4059,9 @@ static int dcn10_register_irq_handlers(struct amdgpu_device *adev)
return r;
}
- register_hpd_handlers(adev);
+ r = register_hpd_handlers(adev);
- return 0;
+ return r;
}
/* Register Outbox IRQ sources and initialize IRQ callbacks */
static int register_outbox_irq_handlers(struct amdgpu_device *adev)
@@ -4006,8 +4092,9 @@ static int register_outbox_irq_handlers(struct amdgpu_device *adev)
c_irq_params->adev = adev;
c_irq_params->irq_src = int_params.irq_source;
- amdgpu_dm_irq_register_interrupt(adev, &int_params,
- dm_dmub_outbox1_low_irq, c_irq_params);
+ if (!amdgpu_dm_irq_register_interrupt(adev, &int_params,
+ dm_dmub_outbox1_low_irq, c_irq_params))
+ return -ENOMEM;
}
return 0;
--
2.34.1
