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| author | Reshetova, Elena <elena.reshetova@intel.com> | 2017-07-04 14:53:28 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-07-04 23:35:19 +0200 |
| commit | c638457a7c6b8931cd4586d6a13a33887185342d (patch) | |
| tree | 7339cd480b668078f1b238ada053beca604ac97f /net/sctp/endpointola.c | |
| parent | net, sctp: convert sctp_transport.refcnt from atomic_t to refcount_t (diff) | |
| download | linux-c638457a7c6b8931cd4586d6a13a33887185342d.tar.xz linux-c638457a7c6b8931cd4586d6a13a33887185342d.zip | |
net, sctp: convert sctp_ep_common.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 '')
| -rw-r--r-- | net/sctp/endpointola.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/net/sctp/endpointola.c b/net/sctp/endpointola.c index efbc31877804..0e86f988f836 100644 --- a/net/sctp/endpointola.c +++ b/net/sctp/endpointola.c @@ -114,7 +114,7 @@ static struct sctp_endpoint *sctp_endpoint_init(struct sctp_endpoint *ep, ep->base.type = SCTP_EP_TYPE_SOCKET; /* Initialize the basic object fields. */ - atomic_set(&ep->base.refcnt, 1); + refcount_set(&ep->base.refcnt, 1); ep->base.dead = false; /* Create an input queue. */ @@ -285,7 +285,7 @@ static void sctp_endpoint_destroy(struct sctp_endpoint *ep) /* Hold a reference to an endpoint. */ void sctp_endpoint_hold(struct sctp_endpoint *ep) { - atomic_inc(&ep->base.refcnt); + refcount_inc(&ep->base.refcnt); } /* Release a reference to an endpoint and clean up if there are @@ -293,7 +293,7 @@ void sctp_endpoint_hold(struct sctp_endpoint *ep) */ void sctp_endpoint_put(struct sctp_endpoint *ep) { - if (atomic_dec_and_test(&ep->base.refcnt)) + if (refcount_dec_and_test(&ep->base.refcnt)) sctp_endpoint_destroy(ep); } |