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authorReshetova, Elena <elena.reshetova@intel.com>2017-07-04 09:34:56 +0300
committerDavid S. Miller <davem@davemloft.net>2017-07-04 11:29:04 +0300
commit271201c09c86cd75e0fd6206bde689176e85aa21 (patch)
tree651a50d749adf45a651b8bcc9813dd049aeccffa /include/net/addrconf.h
parent1be9246077f6bb1583f9347c599480621d63c66a (diff)
downloadlinux-271201c09c86cd75e0fd6206bde689176e85aa21.tar.xz
net, ipv6: convert inet6_ifaddr.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 'include/net/addrconf.h')
-rw-r--r--include/net/addrconf.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/include/net/addrconf.h b/include/net/addrconf.h
index 620bd9a83ba9..6df79e96a780 100644
--- a/include/net/addrconf.h
+++ b/include/net/addrconf.h
@@ -350,18 +350,18 @@ void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp);
static inline void in6_ifa_put(struct inet6_ifaddr *ifp)
{
- if (atomic_dec_and_test(&ifp->refcnt))
+ if (refcount_dec_and_test(&ifp->refcnt))
inet6_ifa_finish_destroy(ifp);
}
static inline void __in6_ifa_put(struct inet6_ifaddr *ifp)
{
- atomic_dec(&ifp->refcnt);
+ refcount_dec(&ifp->refcnt);
}
static inline void in6_ifa_hold(struct inet6_ifaddr *ifp)
{
- atomic_inc(&ifp->refcnt);
+ refcount_inc(&ifp->refcnt);
}