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drm/amdgpu: check memory allocation failure 

Check memory allocation failure and return -ENOMEM in such a case.

'num_post_dep_syncobjs' still has to be set to 0 before the test in order
to have it initialized if 'amdgpu_cs_parser_fini()' is called to free
resources.

The calling graph would be, in such a case!
   failure in amdgpu_cs_process_syncobj_out_dep()
      ---> error code returned by amdgpu_cs_dependencies()
         --> amdgpu_cs_parser_fini() is called

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christophe JAILLET 2017-08-23 07:52:36 +02:00 committed by Alex Deucher
parent a3ce364558
commit 06f10a537e
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
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@ -1079,6 +1079,9 @@ static int amdgpu_cs_process_syncobj_out_dep(struct amdgpu_cs_parser *p,
GFP_KERNEL);
p->num_post_dep_syncobjs = 0;
if (!p->post_dep_syncobjs)
return -ENOMEM;
for (i = 0; i < num_deps; ++i) {
p->post_dep_syncobjs[i] = drm_syncobj_find(p->filp, deps[i].handle);
if (!p->post_dep_syncobjs[i])