diff options
| author | Jakub Kicinski <kuba@kernel.org> | 2021-11-19 06:21:53 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-11-20 12:25:57 +0000 |
| commit | d07b26f5bbea9ade34dfd6abea7b3ca056c03cd1 (patch) | |
| tree | 4a907941337e5445e0834277647ba4c04269523e /net/core/dev.c | |
| parent | net: unexport dev_addr_init() & dev_addr_flush() (diff) | |
| download | linux-d07b26f5bbea9ade34dfd6abea7b3ca056c03cd1.tar.gz linux-d07b26f5bbea9ade34dfd6abea7b3ca056c03cd1.zip | |
dev_addr: add a modification check
netdev->dev_addr should only be modified via helpers,
but someone may be casting off the const. Add a runtime
check to catch abuses.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/dev.c')
| -rw-r--r-- | net/core/dev.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index 92c9258cbf28..9219e319e901 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -1377,6 +1377,7 @@ static int __dev_open(struct net_device *dev, struct netlink_ext_ack *extack) int ret; ASSERT_RTNL(); + dev_addr_check(dev); if (!netif_device_present(dev)) { /* may be detached because parent is runtime-suspended */ |