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authorReshetova, Elena <elena.reshetova@intel.com>2017-07-04 09:34:57 +0300
committerDavid S. Miller <davem@davemloft.net>2017-07-04 01:29:04 -0700
commitd3981bc615f652b9ead0762dd180125ac2b21a3a (patch)
treeec29e37211e9ac8e862d019735c539a34dfdabee /include/net
parent271201c09c86cd75e0fd6206bde689176e85aa21 (diff)
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net, ipv6: convert ifmcaddr6.mca_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')
-rw-r--r--include/net/if_inet6.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/if_inet6.h b/include/net/if_inet6.h
index 2b41cb86d62f..4bb52ce634e8 100644
--- a/include/net/if_inet6.h
+++ b/include/net/if_inet6.h
@@ -127,7 +127,7 @@ struct ifmcaddr6 {
struct timer_list mca_timer;
unsigned int mca_flags;
int mca_users;
- atomic_t mca_refcnt;
+ refcount_t mca_refcnt;
spinlock_t mca_lock;
unsigned long mca_cstamp;
unsigned long mca_tstamp;