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Message-ID: <20240801002107.3934037-8-sashal@kernel.org>
Date: Wed, 31 Jul 2024 20:17:23 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
stable@...r.kernel.org
Cc: Hersen Wu <hersenxs.wu@....com>,
Harry Wentland <harry.wentland@....com>,
Tom Chung <chiahsuan.chung@....com>,
Daniel Wheeler <daniel.wheeler@....com>,
Alex Deucher <alexander.deucher@....com>,
Sasha Levin <sashal@...nel.org>,
sunpeng.li@....com,
Rodrigo.Siqueira@....com,
christian.koenig@....com,
Xinhui.Pan@....com,
airlied@...il.com,
daniel@...ll.ch,
alex.hung@....com,
hamza.mahfooz@....com,
roman.li@....com,
mario.limonciello@....com,
Wayne.Lin@....com,
amd-gfx@...ts.freedesktop.org,
dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 6.6 08/83] drm/amd/display: Add NULL pointer and OVERRUN check within amdgpu_dm irq register
From: Hersen Wu <hersenxs.wu@....com>
[ Upstream commit 6e41709eb1d9207d88e46026baf9cc850206b374 ]
[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@....com>
Acked-by: Tom Chung <chiahsuan.chung@....com>
Signed-off-by: Hersen Wu <hersenxs.wu@....com>
Tested-by: Daniel Wheeler <daniel.wheeler@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
.../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 60db3800666ec..7fa95a81b69bd 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -3468,7 +3468,7 @@ 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;
@@ -3480,11 +3480,17 @@ 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,
@@ -3497,9 +3503,16 @@ 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) {
@@ -3508,11 +3521,19 @@ 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)
@@ -3553,13 +3574,21 @@ 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 */
@@ -3575,14 +3604,21 @@ 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 */
@@ -3593,9 +3629,9 @@ 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
@@ -3639,13 +3675,21 @@ 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 */
@@ -3660,13 +3704,21 @@ 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 */
@@ -3682,14 +3734,21 @@ 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 */
@@ -3700,9 +3759,9 @@ 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 */
@@ -3754,13 +3813,21 @@ 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 */
@@ -3778,9 +3845,11 @@ 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
@@ -3789,8 +3858,10 @@ 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
@@ -3813,13 +3884,21 @@ 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 */
@@ -3836,14 +3915,21 @@ 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 */
@@ -3854,9 +3940,9 @@ 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)
@@ -3887,8 +3973,9 @@ 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;
--
2.43.0
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