diff options
| author | Reshetova, Elena <elena.reshetova@intel.com> | 2017-06-30 13:07:58 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-07-01 17:39:07 +0300 |
| commit | 633547973ffc32fd2c815639d4675e1531f0896f (patch) | |
| tree | 751ca7a379366af93f578d9f35f48339d4d2dd9b /net/core/rtnetlink.c | |
| parent | 53869cebce4bc53f71a080e7830600d4ae1ab712 (diff) | |
| download | linux-633547973ffc32fd2c815639d4675e1531f0896f.tar.xz | |
net: convert sk_buff.users from atomic_t to refcount_t
refcount_t type and corresponding API should be
used instead of atomic_t when the variable is used as
a reference counter. This allows to avoid accidental
refcounter overflows that might lead to use-after-free
situations.
Signed-off-by: Elena Reshetova <elena.reshetova@intel.com>
Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David Windsor <dwindsor@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/rtnetlink.c')
| -rw-r--r-- | net/core/rtnetlink.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index ed51de525a88..d1ba90980be1 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -649,7 +649,7 @@ int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, unsigned int g NETLINK_CB(skb).dst_group = group; if (echo) - atomic_inc(&skb->users); + refcount_inc(&skb->users); netlink_broadcast(rtnl, skb, pid, group, GFP_KERNEL); if (echo) err = netlink_unicast(rtnl, skb, pid, MSG_DONTWAIT); |