Unloading ib_mthca crashes with a NULL pointer dereference because
devtmpfs_delete_node() calls device_get_devnode() with mode as NULL.

Signed-off-by: Goldwyn Rodrigues <rgold...@suse.de>

--- 
diff --git a/drivers/infiniband/core/uverbs_main.c 
b/drivers/infiniband/core/uverbs_main.c
index e49a85f..56898b6 100644
--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@ -826,7 +826,8 @@ static void ib_uverbs_remove_one(struct ib_device *device)
 
 static char *uverbs_devnode(struct device *dev, mode_t *mode)
 {
-       *mode = 0666;
+       if (mode)
+               *mode = 0666;
        return kasprintf(GFP_KERNEL, "infiniband/%s", dev_name(dev));
 }
 

-- 
Goldwyn
--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Reply via email to