From: Thomas Hellstrom <thellstrom@vmware.com>
Date: Thu, 26 Apr 2018 07:59:30 +0000 (+0200)
Subject: drm/vmwgfx: Fix a buffer object leak
X-Git-Tag: v4.9.99~11
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=32c6a543d8a58cb4df06e103dae241d848263938;p=platform%2Fkernel%2Flinux-amlogic.git

drm/vmwgfx: Fix a buffer object leak

commit 13f149d47392782baafd96d54d4e65f3b5ca342f upstream.

A buffer object leak was introduced when fixing a premature buffer
object release. Fix this.

Cc: <stable@vger.kernel.org>
Fixes: 73a88250b709 ("Fix a destoy-while-held mutex problem.")
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Deepak Rawat <drawat@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
index 87086af42114..33ca24ab983e 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
@@ -2014,6 +2014,7 @@ void vmw_kms_helper_resource_finish(struct vmw_validation_ctx *ctx,
 		vmw_kms_helper_buffer_finish(res->dev_priv, NULL, ctx->buf,
 					     out_fence, NULL);
 
+	vmw_dmabuf_unreference(&ctx->buf);
 	vmw_resource_unreserve(res, false, NULL, 0);
 	mutex_unlock(&res->dev_priv->cmdbuf_mutex);
 }