drm/vmwgfx: Handle vmalloc() failure in vmw_local_fifo_reserve()

commit f0c62e9878024300319ba2438adc7b06c6b9c448 upstream.

If vmalloc() fails then we need to a bit of cleanup before returning.

Fixes: fb1d9738ca05 ("drm/vmwgfx: Add DRM driver for VMware Virtual GPU")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.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_fifo.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
index 39f2b03888e7e5b7beb107cd0a32aa0345a328be..f98703fd22b1b55b6ac99d90089836b3d58e3846 100644 (file)
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
@@ -384,6 +384,8 @@ void *vmw_fifo_reserve(struct vmw_private *dev_priv, uint32_t bytes)
                                return fifo_state->static_buffer;
                        else {
                                fifo_state->dynamic_buffer = vmalloc(bytes);
+                               if (!fifo_state->dynamic_buffer)
+                                       goto out_err;
                                return fifo_state->dynamic_buffer;
                        }
                }