svn commit: r314131 - head/sys/ofed/drivers/infiniband/core

[Navdeep Parhar]

Author: np
Date: Thu Feb 23 07:48:58 2017
New Revision: 314131
URL: https://svnweb.freebsd.org/changeset/base/314131

Log:
  Avoid NULL dereference in a couple of sysctl handlers in ibcore.
  iw_cxgbe sets ib_device->dma_device to NULL (since r311880).
  
  Reviewed by:	hselasky@
  Sponsored by:	Chelsio Communications

Modified:
  head/sys/ofed/drivers/infiniband/core/uverbs_main.c

Modified: head/sys/ofed/drivers/infiniband/core/uverbs_main.c
==============================================================================
--- head/sys/ofed/drivers/infiniband/core/uverbs_main.c	Thu Feb 23 07:45:58 2017	(r314130)
+++ head/sys/ofed/drivers/infiniband/core/uverbs_main.c	Thu Feb 23 07:48:58 2017	(r314131)
@@ -1225,7 +1225,7 @@ show_dev_device(struct device *device, s
 {
 	struct ib_uverbs_device *dev = dev_get_drvdata(device);
 
-	if (!dev)
+	if (!dev || !dev->ib_dev->dma_device)
 		return -ENODEV;
 
 	return sprintf(buf, "0x%04x\n",
@@ -1238,7 +1238,7 @@ show_dev_vendor(struct device *device, s
 {
 	struct ib_uverbs_device *dev = dev_get_drvdata(device);
 
-	if (!dev)
+	if (!dev || !dev->ib_dev->dma_device)
 		return -ENODEV;
 
 	return sprintf(buf, "0x%04x\n",