From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Thu, 27 Apr 2017 09:12:08 +0000 (+0300)
Subject: drm/vmwgfx: Handle vmalloc() failure in vmw_local_fifo_reserve()
X-Git-Tag: v3.16.48~72
X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b01751a6d65eca74c9c3986d65e2c4176997ecd7;p=linux

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: Ben Hutchings <ben@decadent.org.uk>
---

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
index 6eae14d2a3f7..f4a9ffd6bcb1 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
@@ -385,6 +385,8 @@ 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;
 			}
 		}