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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 11:29:04 +0300
commit1be9246077f6bb1583f9347c599480621d63c66a (patch)
tree1c53e30fe4a14dde41e95b4d10cba6df96fd91a1 /include/net/if_inet6.h
parent0aeea21ada517b99a6e95298ffc105381bcd3a52 (diff)
downloadlinux-1be9246077f6bb1583f9347c599480621d63c66a.tar.xz
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 'include/net/if_inet6.h')
-rw-r--r--include/net/if_inet6.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/net/if_inet6.h b/include/net/if_inet6.h
index f656f9051aca..e7a17b231afc 100644
--- a/include/net/if_inet6.h
+++ b/include/net/if_inet6.h
@@ -17,6 +17,7 @@
#include <net/snmp.h>
#include <linux/ipv6.h>
+#include <linux/refcount.h>
/* inet6_dev.if_flags */
@@ -187,7 +188,7 @@ struct inet6_dev {
struct ifacaddr6 *ac_list;
rwlock_t lock;
- atomic_t refcnt;
+ refcount_t refcnt;
__u32 if_flags;
int dead;