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| author | Reshetova, Elena <elena.reshetova@intel.com> | 2017-06-30 13:08:00 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-07-01 07:39:08 -0700 |
| commit | 14afee4b6092fde451ee17604e5f5c89da33e71e (patch) | |
| tree | 19be7a1d72a1b25c5e5366c1213cdda982aacca2 /net/netlink | |
| parent | 2638595afccf6554bfe55268ff9b2d3ac3dff2e6 (diff) | |
| download | linux-14afee4b6092fde451ee17604e5f5c89da33e71e.tar.gz linux-14afee4b6092fde451ee17604e5f5c89da33e71e.tar.bz2 linux-14afee4b6092fde451ee17604e5f5c89da33e71e.zip | |
net: convert sock.sk_wmem_alloc 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/netlink')
| -rw-r--r-- | net/netlink/af_netlink.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c index 05030ad1a36c..8ced52e91181 100644 --- a/net/netlink/af_netlink.c +++ b/net/netlink/af_netlink.c @@ -372,7 +372,7 @@ static void netlink_sock_destruct(struct sock *sk) } WARN_ON(atomic_read(&sk->sk_rmem_alloc)); - WARN_ON(atomic_read(&sk->sk_wmem_alloc)); + WARN_ON(refcount_read(&sk->sk_wmem_alloc)); WARN_ON(nlk_sk(sk)->groups); } |