[PATCH] drm/amd/pp: Fix memory leak in error path in smumgr
Quan, Evan
Evan.Quan at amd.com
Wed Mar 14 08:50:53 UTC 2018
Reviewed-by: Evan Quan <evan.quan at amd.com>
-----Original Message-----
From: amd-gfx [mailto:amd-gfx-bounces at lists.freedesktop.org] On Behalf Of Rex Zhu
Sent: Wednesday, March 14, 2018 4:17 PM
To: amd-gfx at lists.freedesktop.org
Cc: Zhu, Rex <Rex.Zhu at amd.com>
Subject: [PATCH] drm/amd/pp: Fix memory leak in error path in smumgr
Free the backend structure if we fail to allocate device memory.
Change-Id: Ib5fbd507369575b90df57a55d3e7318c769b3e27
Signed-off-by: Rex Zhu <Rex.Zhu at amd.com>
---
drivers/gpu/drm/amd/powerplay/smumgr/cz_smumgr.c | 35 +++++++++++++---------
drivers/gpu/drm/amd/powerplay/smumgr/fiji_smumgr.c | 8 +++-- .../gpu/drm/amd/powerplay/smumgr/iceland_smumgr.c | 8 +++--
.../drm/amd/powerplay/smumgr/polaris10_smumgr.c | 8 +++--
drivers/gpu/drm/amd/powerplay/smumgr/rv_smumgr.c | 21 ++++++++-----
.../gpu/drm/amd/powerplay/smumgr/tonga_smumgr.c | 8 +++--
6 files changed, 54 insertions(+), 34 deletions(-)
diff --git a/drivers/gpu/drm/amd/powerplay/smumgr/cz_smumgr.c b/drivers/gpu/drm/amd/powerplay/smumgr/cz_smumgr.c
index 957739a..ee8968c 100644
--- a/drivers/gpu/drm/amd/powerplay/smumgr/cz_smumgr.c
+++ b/drivers/gpu/drm/amd/powerplay/smumgr/cz_smumgr.c
@@ -746,8 +746,6 @@ static int cz_smu_init(struct pp_hwmgr *hwmgr)
if (cz_smu == NULL)
return -ENOMEM;
- hwmgr->smu_backend = cz_smu;
-
cz_smu->toc_buffer.data_size = 4096;
cz_smu->smu_buffer.data_size =
ALIGN(UCODE_ID_RLC_SCRATCH_SIZE_BYTE, 32) + @@ -764,7 +762,7 @@ static int cz_smu_init(struct pp_hwmgr *hwmgr)
&cz_smu->toc_buffer.mc_addr,
&cz_smu->toc_buffer.kaddr);
if (ret)
- return -EINVAL;
+ goto err2;
ret = amdgpu_bo_create_kernel((struct amdgpu_device *)hwmgr->adev,
cz_smu->smu_buffer.data_size,
@@ -773,19 +771,15 @@ static int cz_smu_init(struct pp_hwmgr *hwmgr)
&cz_smu->smu_buffer.handle,
&cz_smu->smu_buffer.mc_addr,
&cz_smu->smu_buffer.kaddr);
- if (ret) {
- amdgpu_bo_free_kernel(&cz_smu->toc_buffer.handle,
- &cz_smu->toc_buffer.mc_addr,
- &cz_smu->toc_buffer.kaddr);
- return -EINVAL;
- }
+ if (ret)
+ goto err1;
if (0 != cz_smu_populate_single_scratch_entry(hwmgr,
CZ_SCRATCH_ENTRY_UCODE_ID_RLC_SCRATCH,
UCODE_ID_RLC_SCRATCH_SIZE_BYTE,
&cz_smu->scratch_buffer[cz_smu->scratch_buffer_length++])) {
pr_err("Error when Populate Firmware Entry.\n");
- return -1;
+ goto err0;
}
if (0 != cz_smu_populate_single_scratch_entry(hwmgr,
@@ -793,14 +787,14 @@ static int cz_smu_init(struct pp_hwmgr *hwmgr)
UCODE_ID_RLC_SRM_ARAM_SIZE_BYTE,
&cz_smu->scratch_buffer[cz_smu->scratch_buffer_length++])) {
pr_err("Error when Populate Firmware Entry.\n");
- return -1;
+ goto err0;
}
if (0 != cz_smu_populate_single_scratch_entry(hwmgr,
CZ_SCRATCH_ENTRY_UCODE_ID_RLC_SRM_DRAM,
UCODE_ID_RLC_SRM_DRAM_SIZE_BYTE,
&cz_smu->scratch_buffer[cz_smu->scratch_buffer_length++])) {
pr_err("Error when Populate Firmware Entry.\n");
- return -1;
+ goto err0;
}
if (0 != cz_smu_populate_single_scratch_entry(hwmgr,
@@ -808,7 +802,7 @@ static int cz_smu_init(struct pp_hwmgr *hwmgr)
sizeof(struct SMU8_MultimediaPowerLogData),
&cz_smu->scratch_buffer[cz_smu->scratch_buffer_length++])) {
pr_err("Error when Populate Firmware Entry.\n");
- return -1;
+ goto err0;
}
if (0 != cz_smu_populate_single_scratch_entry(hwmgr,
@@ -816,10 +810,23 @@ static int cz_smu_init(struct pp_hwmgr *hwmgr)
sizeof(struct SMU8_Fusion_ClkTable),
&cz_smu->scratch_buffer[cz_smu->scratch_buffer_length++])) {
pr_err("Error when Populate Firmware Entry.\n");
- return -1;
+ goto err0;
}
+ hwmgr->smu_backend = cz_smu;
return 0;
+
+err0:
+ amdgpu_bo_free_kernel(&cz_smu->smu_buffer.handle,
+ &cz_smu->smu_buffer.mc_addr,
+ &cz_smu->smu_buffer.kaddr);
+err1:
+ amdgpu_bo_free_kernel(&cz_smu->toc_buffer.handle,
+ &cz_smu->toc_buffer.mc_addr,
+ &cz_smu->toc_buffer.kaddr);
+err2:
+ kfree(cz_smu);
+ return -EINVAL;
}
static int cz_smu_fini(struct pp_hwmgr *hwmgr) diff --git a/drivers/gpu/drm/amd/powerplay/smumgr/fiji_smumgr.c b/drivers/gpu/drm/amd/powerplay/smumgr/fiji_smumgr.c
index ed2e2e9..ff9ba9d 100644
--- a/drivers/gpu/drm/amd/powerplay/smumgr/fiji_smumgr.c
+++ b/drivers/gpu/drm/amd/powerplay/smumgr/fiji_smumgr.c
@@ -352,10 +352,12 @@ static int fiji_smu_init(struct pp_hwmgr *hwmgr)
if (fiji_priv == NULL)
return -ENOMEM;
- hwmgr->smu_backend = fiji_priv;
-
- if (smu7_init(hwmgr))
+ if (smu7_init(hwmgr)) {
+ kfree(fiji_priv);
return -EINVAL;
+ }
+
+ hwmgr->smu_backend = fiji_priv;
return 0;
}
diff --git a/drivers/gpu/drm/amd/powerplay/smumgr/iceland_smumgr.c b/drivers/gpu/drm/amd/powerplay/smumgr/iceland_smumgr.c
index 6255edf..91ab7c8 100644
--- a/drivers/gpu/drm/amd/powerplay/smumgr/iceland_smumgr.c
+++ b/drivers/gpu/drm/amd/powerplay/smumgr/iceland_smumgr.c
@@ -269,10 +269,12 @@ static int iceland_smu_init(struct pp_hwmgr *hwmgr)
if (iceland_priv == NULL)
return -ENOMEM;
- hwmgr->smu_backend = iceland_priv;
-
- if (smu7_init(hwmgr))
+ if (smu7_init(hwmgr)) {
+ kfree(iceland_priv);
return -EINVAL;
+ }
+
+ hwmgr->smu_backend = iceland_priv;
return 0;
}
diff --git a/drivers/gpu/drm/amd/powerplay/smumgr/polaris10_smumgr.c b/drivers/gpu/drm/amd/powerplay/smumgr/polaris10_smumgr.c
index 0609acf..03b95b4 100644
--- a/drivers/gpu/drm/amd/powerplay/smumgr/polaris10_smumgr.c
+++ b/drivers/gpu/drm/amd/powerplay/smumgr/polaris10_smumgr.c
@@ -347,10 +347,12 @@ static int polaris10_smu_init(struct pp_hwmgr *hwmgr)
if (smu_data == NULL)
return -ENOMEM;
- hwmgr->smu_backend = smu_data;
-
- if (smu7_init(hwmgr))
+ if (smu7_init(hwmgr)) {
+ kfree(smu_data);
return -EINVAL;
+ }
+
+ hwmgr->smu_backend = smu_data;
return 0;
}
diff --git a/drivers/gpu/drm/amd/powerplay/smumgr/rv_smumgr.c b/drivers/gpu/drm/amd/powerplay/smumgr/rv_smumgr.c
index e2ee23a..ad2fa0d 100644
--- a/drivers/gpu/drm/amd/powerplay/smumgr/rv_smumgr.c
+++ b/drivers/gpu/drm/amd/powerplay/smumgr/rv_smumgr.c
@@ -338,7 +338,6 @@ static int rv_smu_init(struct pp_hwmgr *hwmgr)
if (!priv)
return -ENOMEM;
- hwmgr->smu_backend = priv;
/* allocate space for watermarks table */
r = amdgpu_bo_create_kernel((struct amdgpu_device *)hwmgr->adev, @@ -350,7 +349,7 @@ static int rv_smu_init(struct pp_hwmgr *hwmgr)
&kaddr);
if (r)
- return -EINVAL;
+ goto err0;
priv->smu_tables.entry[WMTABLE].version = 0x01;
priv->smu_tables.entry[WMTABLE].size = sizeof(Watermarks_t); @@ -368,12 +367,8 @@ static int rv_smu_init(struct pp_hwmgr *hwmgr)
&mc_addr,
&kaddr);
- if (r) {
- amdgpu_bo_free_kernel(&priv->smu_tables.entry[WMTABLE].handle,
- &priv->smu_tables.entry[WMTABLE].mc_addr,
- &priv->smu_tables.entry[WMTABLE].table);
- return -EINVAL;
- }
+ if (r)
+ goto err1;
priv->smu_tables.entry[CLOCKTABLE].version = 0x01;
priv->smu_tables.entry[CLOCKTABLE].size = sizeof(DpmClocks_t); @@ -382,7 +377,17 @@ static int rv_smu_init(struct pp_hwmgr *hwmgr)
priv->smu_tables.entry[CLOCKTABLE].table = kaddr;
priv->smu_tables.entry[CLOCKTABLE].handle = handle;
+ hwmgr->smu_backend = priv;
+
return 0;
+
+err1:
+ amdgpu_bo_free_kernel(&priv->smu_tables.entry[WMTABLE].handle,
+ &priv->smu_tables.entry[WMTABLE].mc_addr,
+ &priv->smu_tables.entry[WMTABLE].table);
+err0:
+ kfree(priv);
+ return -EINVAL;
}
const struct pp_smumgr_func rv_smu_funcs = { diff --git a/drivers/gpu/drm/amd/powerplay/smumgr/tonga_smumgr.c b/drivers/gpu/drm/amd/powerplay/smumgr/tonga_smumgr.c
index 39d6f4e..f29d10c 100644
--- a/drivers/gpu/drm/amd/powerplay/smumgr/tonga_smumgr.c
+++ b/drivers/gpu/drm/amd/powerplay/smumgr/tonga_smumgr.c
@@ -227,10 +227,12 @@ static int tonga_smu_init(struct pp_hwmgr *hwmgr)
if (tonga_priv == NULL)
return -ENOMEM;
- hwmgr->smu_backend = tonga_priv;
-
- if (smu7_init(hwmgr))
+ if (smu7_init(hwmgr)) {
+ kfree(tonga_priv);
return -EINVAL;
+ }
+
+ hwmgr->smu_backend = tonga_priv;
return 0;
}
--
1.9.1
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