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| author | Elena Reshetova <elena.reshetova@intel.com> | 2017-03-17 13:12:46 +0200 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2017-04-12 22:02:36 +0200 |
| commit | dab6b5daeeb3e70bfb2ed2d6d6f02dd387e3b338 (patch) | |
| tree | f53267726421189109c1e348965ac84e4281ac5c /net/bluetooth/rfcomm | |
| parent | 9232259913022c1ab96f7bf2b87598b89b942f1f (diff) | |
| download | linux-dab6b5daeeb3e70bfb2ed2d6d6f02dd387e3b338.tar.gz linux-dab6b5daeeb3e70bfb2ed2d6d6f02dd387e3b338.tar.bz2 linux-dab6b5daeeb3e70bfb2ed2d6d6f02dd387e3b338.zip | |
Bluetooth: convert rfcomm_dlc.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: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/bluetooth/rfcomm')
| -rw-r--r-- | net/bluetooth/rfcomm/core.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c index f7eb02f09b54..8ebca9033d60 100644 --- a/net/bluetooth/rfcomm/core.c +++ b/net/bluetooth/rfcomm/core.c @@ -311,7 +311,7 @@ struct rfcomm_dlc *rfcomm_dlc_alloc(gfp_t prio) skb_queue_head_init(&d->tx_queue); mutex_init(&d->lock); - atomic_set(&d->refcnt, 1); + refcount_set(&d->refcnt, 1); rfcomm_dlc_clear_state(d); @@ -342,7 +342,7 @@ static void rfcomm_dlc_unlink(struct rfcomm_dlc *d) { struct rfcomm_session *s = d->session; - BT_DBG("dlc %p refcnt %d session %p", d, atomic_read(&d->refcnt), s); + BT_DBG("dlc %p refcnt %d session %p", d, refcount_read(&d->refcnt), s); list_del(&d->list); d->session = NULL; |