From: Carol L Soto <clsoto@linux.vnet.ibm.com>
Date: Tue, 2 Jun 2015 21:07:23 +0000 (-0500)
Subject: net/mlx4_core: double free of dev_vfs
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5114a04e6c73a0c6e74737e801b8a3b3d40c7e36;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

net/mlx4_core: double free of dev_vfs

If user loads mlx4_core with num_vfs greater than
supported then variable dev->dev_vfs is freed 2 times after unloading the
driver.

Acked-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Carol L Soto <clsoto@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index 0dbd70427221..9485cbef5166 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -2824,6 +2824,7 @@ disable_sriov:
 free_mem:
 	dev->persist->num_vfs = 0;
 	kfree(dev->dev_vfs);
+        dev->dev_vfs = NULL;
 	return dev_flags & ~MLX4_FLAG_MASTER;
 }