From: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Date: Wed, 14 Mar 2018 14:07:49 -0400
Subject: drm/amd/powerplay: Fix KASAN user after free on driver unload.
Git-commit: 3bb271f3cabc464a94dd9fc24df234f3c18d139b
Patch-mainline: v4.17-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
Reusing local handle to initialize BO without resetting it to
NULL is wrong since it causes amdgpu_bo_create_reserved to skip
new BO creation and just reuse the given pointer for pinning.
Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/amd/powerplay/smumgr/rv_smumgr.c | 22 ++------
drivers/gpu/drm/amd/powerplay/smumgr/vega10_smumgr.c | 49 ++++++-------------
2 files changed, 23 insertions(+), 48 deletions(-)
--- a/drivers/gpu/drm/amd/powerplay/smumgr/rv_smumgr.c
+++ b/drivers/gpu/drm/amd/powerplay/smumgr/rv_smumgr.c
@@ -327,10 +327,7 @@ static int rv_start_smu(struct pp_hwmgr
static int rv_smu_init(struct pp_hwmgr *hwmgr)
{
- struct amdgpu_bo *handle = NULL;
struct rv_smumgr *priv;
- uint64_t mc_addr;
- void *kaddr = NULL;
int r;
priv = kzalloc(sizeof(struct rv_smumgr), GFP_KERNEL);
@@ -345,9 +342,9 @@ static int rv_smu_init(struct pp_hwmgr *
sizeof(Watermarks_t),
PAGE_SIZE,
AMDGPU_GEM_DOMAIN_VRAM,
- &handle,
- &mc_addr,
- &kaddr);
+ &priv->smu_tables.entry[WMTABLE].handle,
+ &priv->smu_tables.entry[WMTABLE].mc_addr,
+ &priv->smu_tables.entry[WMTABLE].table);
if (r)
return -EINVAL;
@@ -355,18 +352,16 @@ static int rv_smu_init(struct pp_hwmgr *
priv->smu_tables.entry[WMTABLE].version = 0x01;
priv->smu_tables.entry[WMTABLE].size = sizeof(Watermarks_t);
priv->smu_tables.entry[WMTABLE].table_id = TABLE_WATERMARKS;
- priv->smu_tables.entry[WMTABLE].mc_addr = mc_addr;
- priv->smu_tables.entry[WMTABLE].table = kaddr;
- priv->smu_tables.entry[WMTABLE].handle = handle;
+
/* allocate space for watermarks table */
r = amdgpu_bo_create_kernel((struct amdgpu_device *)hwmgr->adev,
sizeof(DpmClocks_t),
PAGE_SIZE,
AMDGPU_GEM_DOMAIN_VRAM,
- &handle,
- &mc_addr,
- &kaddr);
+ &priv->smu_tables.entry[CLOCKTABLE].handle,
+ &priv->smu_tables.entry[CLOCKTABLE].mc_addr,
+ &priv->smu_tables.entry[CLOCKTABLE].table);
if (r) {
amdgpu_bo_free_kernel(&priv->smu_tables.entry[WMTABLE].handle,
@@ -378,9 +373,6 @@ static int rv_smu_init(struct pp_hwmgr *
priv->smu_tables.entry[CLOCKTABLE].version = 0x01;
priv->smu_tables.entry[CLOCKTABLE].size = sizeof(DpmClocks_t);
priv->smu_tables.entry[CLOCKTABLE].table_id = TABLE_DPMCLOCKS;
- priv->smu_tables.entry[CLOCKTABLE].mc_addr = mc_addr;
- priv->smu_tables.entry[CLOCKTABLE].table = kaddr;
- priv->smu_tables.entry[CLOCKTABLE].handle = handle;
return 0;
}
--- a/drivers/gpu/drm/amd/powerplay/smumgr/vega10_smumgr.c
+++ b/drivers/gpu/drm/amd/powerplay/smumgr/vega10_smumgr.c
@@ -377,10 +377,7 @@ static int vega10_verify_smc_interface(s
static int vega10_smu_init(struct pp_hwmgr *hwmgr)
{
- struct amdgpu_bo *handle = NULL;
struct vega10_smumgr *priv;
- uint64_t mc_addr;
- void *kaddr = NULL;
unsigned long tools_size;
int ret;
struct cgs_firmware_info info = {0};
@@ -403,27 +400,24 @@ static int vega10_smu_init(struct pp_hwm
sizeof(PPTable_t),
PAGE_SIZE,
AMDGPU_GEM_DOMAIN_VRAM,
- &handle,
- &mc_addr,
- &kaddr);
+ &priv->smu_tables.entry[PPTABLE].handle,
+ &priv->smu_tables.entry[PPTABLE].mc_addr,
+ &priv->smu_tables.entry[PPTABLE].table);
if (ret)
goto free_backend;
priv->smu_tables.entry[PPTABLE].version = 0x01;
priv->smu_tables.entry[PPTABLE].size = sizeof(PPTable_t);
priv->smu_tables.entry[PPTABLE].table_id = TABLE_PPTABLE;
- priv->smu_tables.entry[PPTABLE].mc_addr = mc_addr;
- priv->smu_tables.entry[PPTABLE].table = kaddr;
- priv->smu_tables.entry[PPTABLE].handle = handle;
/* allocate space for watermarks table */
ret = amdgpu_bo_create_kernel((struct amdgpu_device *)hwmgr->adev,
sizeof(Watermarks_t),
PAGE_SIZE,
AMDGPU_GEM_DOMAIN_VRAM,
- &handle,
- &mc_addr,
- &kaddr);
+ &priv->smu_tables.entry[WMTABLE].handle,
+ &priv->smu_tables.entry[WMTABLE].mc_addr,
+ &priv->smu_tables.entry[WMTABLE].table);
if (ret)
goto err0;
@@ -431,18 +425,15 @@ static int vega10_smu_init(struct pp_hwm
priv->smu_tables.entry[WMTABLE].version = 0x01;
priv->smu_tables.entry[WMTABLE].size = sizeof(Watermarks_t);
priv->smu_tables.entry[WMTABLE].table_id = TABLE_WATERMARKS;
- priv->smu_tables.entry[WMTABLE].mc_addr = mc_addr;
- priv->smu_tables.entry[WMTABLE].table = kaddr;
- priv->smu_tables.entry[WMTABLE].handle = handle;
/* allocate space for AVFS table */
ret = amdgpu_bo_create_kernel((struct amdgpu_device *)hwmgr->adev,
sizeof(AvfsTable_t),
PAGE_SIZE,
AMDGPU_GEM_DOMAIN_VRAM,
- &handle,
- &mc_addr,
- &kaddr);
+ &priv->smu_tables.entry[AVFSTABLE].handle,
+ &priv->smu_tables.entry[AVFSTABLE].mc_addr,
+ &priv->smu_tables.entry[AVFSTABLE].table);
if (ret)
goto err1;
@@ -450,9 +441,6 @@ static int vega10_smu_init(struct pp_hwm
priv->smu_tables.entry[AVFSTABLE].version = 0x01;
priv->smu_tables.entry[AVFSTABLE].size = sizeof(AvfsTable_t);
priv->smu_tables.entry[AVFSTABLE].table_id = TABLE_AVFS;
- priv->smu_tables.entry[AVFSTABLE].mc_addr = mc_addr;
- priv->smu_tables.entry[AVFSTABLE].table = kaddr;
- priv->smu_tables.entry[AVFSTABLE].handle = handle;
tools_size = 0x19000;
if (tools_size) {
@@ -460,17 +448,14 @@ static int vega10_smu_init(struct pp_hwm
tools_size,
PAGE_SIZE,
AMDGPU_GEM_DOMAIN_VRAM,
- &handle,
- &mc_addr,
- &kaddr);
+ &priv->smu_tables.entry[TOOLSTABLE].handle,
+ &priv->smu_tables.entry[TOOLSTABLE].mc_addr,
+ &priv->smu_tables.entry[TOOLSTABLE].table);
if (ret)
goto err2;
priv->smu_tables.entry[TOOLSTABLE].version = 0x01;
priv->smu_tables.entry[TOOLSTABLE].size = tools_size;
priv->smu_tables.entry[TOOLSTABLE].table_id = TABLE_PMSTATUSLOG;
- priv->smu_tables.entry[TOOLSTABLE].mc_addr = mc_addr;
- priv->smu_tables.entry[TOOLSTABLE].table = kaddr;
- priv->smu_tables.entry[TOOLSTABLE].handle = handle;
}
/* allocate space for AVFS Fuse table */
@@ -478,18 +463,16 @@ static int vega10_smu_init(struct pp_hwm
sizeof(AvfsFuseOverride_t),
PAGE_SIZE,
AMDGPU_GEM_DOMAIN_VRAM,
- &handle,
- &mc_addr,
- &kaddr);
+ &priv->smu_tables.entry[AVFSFUSETABLE].handle,
+ &priv->smu_tables.entry[AVFSFUSETABLE].mc_addr,
+ &priv->smu_tables.entry[AVFSFUSETABLE].table);
if (ret)
goto err3;
priv->smu_tables.entry[AVFSFUSETABLE].version = 0x01;
priv->smu_tables.entry[AVFSFUSETABLE].size = sizeof(AvfsFuseOverride_t);
priv->smu_tables.entry[AVFSFUSETABLE].table_id = TABLE_AVFS_FUSE_OVERRIDE;
- priv->smu_tables.entry[AVFSFUSETABLE].mc_addr = mc_addr;
- priv->smu_tables.entry[AVFSFUSETABLE].table = kaddr;
- priv->smu_tables.entry[AVFSFUSETABLE].handle = handle;
+
return 0;