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| author | Christian König <christian.koenig@amd.com> | 2018-07-27 15:32:04 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-07-31 16:58:16 -0500 |
| commit | 52c054caf83012fe9fe858ee86d90b4ea2cc3cca (patch) | |
| tree | 614a12fd37355647ceef8c1bcc3455c695a2641f /drivers/gpu | |
| parent | ccf9ef0b0d10434dec5046bcfc4e834a7b1830fd (diff) | |
| download | linux-52c054caf83012fe9fe858ee86d90b4ea2cc3cca.tar.bz2 | |
drm/amdgpu: add proper error handling to amdgpu_bo_list_get
Otherwise we silently don't use a BO list when the handle is invalid.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu.h | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.c | 28 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 11 |
3 files changed, 20 insertions, 23 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 1f6345dda6ea..4d4d6697fbce 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -713,8 +713,8 @@ struct amdgpu_bo_list { struct amdgpu_bo_list_entry *array; }; -struct amdgpu_bo_list * -amdgpu_bo_list_get(struct amdgpu_fpriv *fpriv, int id); +int amdgpu_bo_list_get(struct amdgpu_fpriv *fpriv, int id, + struct amdgpu_bo_list **result); void amdgpu_bo_list_get_list(struct amdgpu_bo_list *list, struct list_head *validated); void amdgpu_bo_list_put(struct amdgpu_bo_list *list); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.c index 7679c068c89a..944868e47119 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.c @@ -180,27 +180,20 @@ error_free: return r; } -struct amdgpu_bo_list * -amdgpu_bo_list_get(struct amdgpu_fpriv *fpriv, int id) +int amdgpu_bo_list_get(struct amdgpu_fpriv *fpriv, int id, + struct amdgpu_bo_list **result) { - struct amdgpu_bo_list *result; - rcu_read_lock(); - result = idr_find(&fpriv->bo_list_handles, id); + *result = idr_find(&fpriv->bo_list_handles, id); - if (result) { - if (kref_get_unless_zero(&result->refcount)) { - rcu_read_unlock(); - mutex_lock(&result->lock); - } else { - rcu_read_unlock(); - result = NULL; - } - } else { + if (*result && kref_get_unless_zero(&(*result)->refcount)) { rcu_read_unlock(); + mutex_lock(&(*result)->lock); + return 0; } - return result; + rcu_read_unlock(); + return -ENOENT; } void amdgpu_bo_list_get_list(struct amdgpu_bo_list *list, @@ -335,9 +328,8 @@ int amdgpu_bo_list_ioctl(struct drm_device *dev, void *data, break; case AMDGPU_BO_LIST_OP_UPDATE: - r = -ENOENT; - list = amdgpu_bo_list_get(fpriv, handle); - if (!list) + r = amdgpu_bo_list_get(fpriv, handle, &list); + if (r) goto error_free; r = amdgpu_bo_list_set(adev, filp, list, info, diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c index 533b2e7656c0..8a49c3b97bd4 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c @@ -572,11 +572,16 @@ static int amdgpu_cs_parser_bos(struct amdgpu_cs_parser *p, INIT_LIST_HEAD(&p->validated); /* p->bo_list could already be assigned if AMDGPU_CHUNK_ID_BO_HANDLES is present */ - if (!p->bo_list) - p->bo_list = amdgpu_bo_list_get(fpriv, cs->in.bo_list_handle); - else + if (p->bo_list) { mutex_lock(&p->bo_list->lock); + } else if (cs->in.bo_list_handle) { + r = amdgpu_bo_list_get(fpriv, cs->in.bo_list_handle, + &p->bo_list); + if (r) + return r; + } + if (p->bo_list) { amdgpu_bo_list_get_list(p->bo_list, &p->validated); if (p->bo_list->first_userptr != p->bo_list->num_entries) |