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Date: Wed, 23 Aug 2017 07:52:36 +0200 From: Christophe JAILLET <christophe.jaillet@...adoo.fr> To: alexander.deucher@....com, christian.koenig@....com, airlied@...ux.ie, Monk.Liu@....com, David1.Zhou@....com, AlexBin.Xie@....com, Jerry.Zhang@....com, airlied@...hat.com, marek.olsak@....com, john@...tquake.com, andresx7@...il.com, ray.huang@....com Cc: amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org, Christophe JAILLET <christophe.jaillet@...adoo.fr> Subject: [PATCH] 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 Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr> --- drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c index 15d4a28d73bb..baa90df90aea 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c @@ -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]) -- 2.11.0
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