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authorReshetova, Elena <elena.reshetova@intel.com>2017-07-04 15:53:23 +0300
committerDavid S. Miller <davem@davemloft.net>2017-07-04 22:35:18 +0100
commit55eabed60a68e918abc44f6beb64f38cc008b29d (patch)
tree41de9aa9ab0982cc950c034da4918ee343447658 /include/net
parent850a6212c6fa151076dca045821c75025723bc46 (diff)
net, xfrm: convert sec_path.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/xfrm.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index e1bd1de2d66a..c0916ab18d32 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -1030,7 +1030,7 @@ struct xfrm_offload {
};
struct sec_path {
- atomic_t refcnt;
+ refcount_t refcnt;
int len;
int olen;
@@ -1051,7 +1051,7 @@ static inline struct sec_path *
secpath_get(struct sec_path *sp)
{
if (sp)
- atomic_inc(&sp->refcnt);
+ refcount_inc(&sp->refcnt);
return sp;
}
@@ -1060,7 +1060,7 @@ void __secpath_destroy(struct sec_path *sp);
static inline void
secpath_put(struct sec_path *sp)
{
- if (sp && atomic_dec_and_test(&sp->refcnt))
+ if (sp && refcount_dec_and_test(&sp->refcnt))
__secpath_destroy(sp);
}