diff options
| author | Kees Cook <keescook@chromium.org> | 2022-05-08 03:22:17 -0700 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2022-05-10 12:21:51 +0200 |
| commit | dc5306a8c0eace6c113aded2e36ae5e15fdca4d7 (patch) | |
| tree | 9871932c6b1920bdf99797282deb89d92f2de435 /net/decnet/dn_dev.c | |
| parent | 1809c30b6e5a83a1de1435fe01aaa4de4d626a7c (diff) | |
| download | linux-dc5306a8c0eace6c113aded2e36ae5e15fdca4d7.tar.gz | |
decnet: Use container_of() for struct dn_neigh casts
Clang's structure layout randomization feature gets upset when it sees
struct neighbor (which is randomized) cast to struct dn_neigh:
net/decnet/dn_route.c:1123:15: error: casting from randomized structure pointer type 'struct neighbour *' to 'struct dn_neigh *'
gateway = ((struct dn_neigh *)neigh)->addr;
^
Update all the open-coded casts to use container_of() to do the conversion
instead of depending on strict member ordering.
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/lkml/202205041247.WKBEHGS5-lkp@intel.com
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Yajun Deng <yajun.deng@linux.dev>
Cc: Zheng Yongjun <zhengyongjun3@huawei.com>
Cc: Bill Wendling <morbo@google.com>
Cc: linux-decnet-user@lists.sourceforge.net
Cc: netdev@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20220508102217.2647184-1-keescook@chromium.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'net/decnet/dn_dev.c')
| -rw-r--r-- | net/decnet/dn_dev.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/decnet/dn_dev.c b/net/decnet/dn_dev.c index 0ee7d4c0c95545..a09ba642b5e76a 100644 --- a/net/decnet/dn_dev.c +++ b/net/decnet/dn_dev.c @@ -854,7 +854,7 @@ static void dn_send_endnode_hello(struct net_device *dev, struct dn_ifaddr *ifa) memcpy(msg->neighbor, dn_hiord, ETH_ALEN); if (dn_db->router) { - struct dn_neigh *dn = (struct dn_neigh *)dn_db->router; + struct dn_neigh *dn = container_of(dn_db->router, struct dn_neigh, n); dn_dn2eth(msg->neighbor, dn->addr); } @@ -902,7 +902,7 @@ static void dn_send_router_hello(struct net_device *dev, struct dn_ifaddr *ifa) { int n; struct dn_dev *dn_db = rcu_dereference_raw(dev->dn_ptr); - struct dn_neigh *dn = (struct dn_neigh *)dn_db->router; + struct dn_neigh *dn = container_of(dn_db->router, struct dn_neigh, n); struct sk_buff *skb; size_t size; unsigned char *ptr; |