diff options
| author | Reshetova, Elena <elena.reshetova@intel.com> | 2017-07-04 15:52:57 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-07-05 00:35:15 +0300 |
| commit | fbea9e0760bf17e681b9bfc25b97b408708b9ff2 (patch) | |
| tree | a4c8c287dfb2452e1ea5c94e089350cf93b948e6 /net/l2tp/l2tp_core.h | |
| parent | 58951dde05fdac96a9d30805d8fa5d124dd4f92c (diff) | |
| download | linux-fbea9e0760bf17e681b9bfc25b97b408708b9ff2.tar.xz | |
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_core.h')
| -rw-r--r-- | net/l2tp/l2tp_core.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/l2tp/l2tp_core.h b/net/l2tp/l2tp_core.h index eec5ad2ebb93..da58fad2451b 100644 --- a/net/l2tp/l2tp_core.h +++ b/net/l2tp/l2tp_core.h @@ -7,6 +7,7 @@ * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ +#include <linux/refcount.h> #ifndef _L2TP_CORE_H_ #define _L2TP_CORE_H_ @@ -177,7 +178,7 @@ struct l2tp_tunnel { struct list_head list; /* Keep a list of all tunnels */ struct net *l2tp_net; /* the net we belong to */ - atomic_t ref_count; + refcount_t ref_count; #ifdef CONFIG_DEBUG_FS void (*show)(struct seq_file *m, void *arg); #endif |