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authorReshetova, Elena <elena.reshetova@intel.com>2017-07-04 09:34:55 +0300
committerDavid S. Miller <davem@davemloft.net>2017-07-04 01:29:04 -0700
commit1be9246077f6bb1583f9347c599480621d63c66a (patch)
tree1c53e30fe4a14dde41e95b4d10cba6df96fd91a1 /net/ipv6
parent0aeea21ada517b99a6e95298ffc105381bcd3a52 (diff)
net, ipv6: convert inet6_dev.refcnt 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/ipv6')
-rw-r--r--net/ipv6/addrconf.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 114fb64cf176..2365f1224c6b 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -426,7 +426,7 @@ static struct inet6_dev *ipv6_add_dev(struct net_device *dev)
}
/* One reference from device. */
- in6_dev_hold(ndev);
+ refcount_set(&ndev->refcnt, 1);
if (dev->flags & (IFF_NOARP | IFF_LOOPBACK))
ndev->cnf.accept_dad = -1;