From: Dave Airlie <airlied@redhat.com>
Date: Fri, 10 Mar 2017 02:13:04 +0000 (+1000)
Subject: drm/amdgpu: fix parser init error path to avoid crash in parser fini
X-Git-Tag: v4.9.71~135
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=063c753ef78bee13265bf02df185704e8fdff1f9;p=platform%2Fkernel%2Flinux-amlogic.git

drm/amdgpu: fix parser init error path to avoid crash in parser fini


[ Upstream commit 607523d19c9d67ba4cf7bdaced644f11ed04992c ]

If we don't reset the chunk info in the error path, the subsequent
fini path will double free.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index bfb4b91..f26d1fd 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -240,6 +240,8 @@ free_partial_kdata:
 	for (; i >= 0; i--)
 		drm_free_large(p->chunks[i].kdata);
 	kfree(p->chunks);
+	p->chunks = NULL;
+	p->nchunks = 0;
 put_ctx:
 	amdgpu_ctx_put(p->ctx);
 free_chunk: