diff options
| author | Reshetova, Elena <elena.reshetova@intel.com> | 2017-06-30 13:08:07 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-07-01 17:39:09 +0300 |
| commit | edcb691871b27c3cc463b7291afe75f1c3423406 (patch) | |
| tree | 5935d0a93146c27c2c33a89c6911dbbd706a4ad5 /include/net | |
| parent | 717d1e993ad8d24a711775d8f2afbcdc76a520a1 (diff) | |
| download | linux-edcb691871b27c3cc463b7291afe75f1c3423406.tar.xz | |
net: convert inet_frag_queue.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/inet_frag.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/net/inet_frag.h b/include/net/inet_frag.h index 975779d0e7b0..440c1e9d0623 100644 --- a/include/net/inet_frag.h +++ b/include/net/inet_frag.h @@ -50,7 +50,7 @@ struct inet_frag_queue { spinlock_t lock; struct timer_list timer; struct hlist_node list; - atomic_t refcnt; + refcount_t refcnt; struct sk_buff *fragments; struct sk_buff *fragments_tail; ktime_t stamp; @@ -129,7 +129,7 @@ void inet_frag_maybe_warn_overflow(struct inet_frag_queue *q, static inline void inet_frag_put(struct inet_frag_queue *q, struct inet_frags *f) { - if (atomic_dec_and_test(&q->refcnt)) + if (refcount_dec_and_test(&q->refcnt)) inet_frag_destroy(q, f); } |