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| author | Reshetova, Elena <elena.reshetova@intel.com> | 2017-07-04 15:52:57 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-07-04 22:35:15 +0100 |
| commit | fbea9e0760bf17e681b9bfc25b97b408708b9ff2 (patch) | |
| tree | a4c8c287dfb2452e1ea5c94e089350cf93b948e6 /net/l2tp/l2tp_debugfs.c | |
| parent | 58951dde05fdac96a9d30805d8fa5d124dd4f92c (diff) | |
| download | linux-stable-fbea9e0760bf17e681b9bfc25b97b408708b9ff2.tar.gz linux-stable-fbea9e0760bf17e681b9bfc25b97b408708b9ff2.tar.bz2 linux-stable-fbea9e0760bf17e681b9bfc25b97b408708b9ff2.zip | |
net, l2tp: convert l2tp_tunnel.ref_count 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/l2tp/l2tp_debugfs.c')
| -rw-r--r-- | net/l2tp/l2tp_debugfs.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/l2tp/l2tp_debugfs.c b/net/l2tp/l2tp_debugfs.c index 98a005d0d04a..53bae54c4d6e 100644 --- a/net/l2tp/l2tp_debugfs.c +++ b/net/l2tp/l2tp_debugfs.c @@ -145,7 +145,7 @@ static void l2tp_dfs_seq_tunnel_show(struct seq_file *m, void *v) ""); seq_printf(m, " %d sessions, refcnt %d/%d\n", session_count, tunnel->sock ? refcount_read(&tunnel->sock->sk_refcnt) : 0, - atomic_read(&tunnel->ref_count)); + refcount_read(&tunnel->ref_count)); seq_printf(m, " %08x rx %ld/%ld/%ld rx %ld/%ld/%ld\n", tunnel->debug, atomic_long_read(&tunnel->stats.tx_packets), @@ -170,7 +170,7 @@ static void l2tp_dfs_seq_session_show(struct seq_file *m, void *v) ""); if (session->send_seq || session->recv_seq) seq_printf(m, " nr %hu, ns %hu\n", session->nr, session->ns); - seq_printf(m, " refcnt %d\n", atomic_read(&session->ref_count)); + seq_printf(m, " refcnt %d\n", refcount_read(&session->ref_count)); seq_printf(m, " config %d/%d/%c/%c/%s/%s %08x %u\n", session->mtu, session->mru, session->recv_seq ? 'R' : '-', |