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author | Reshetova, Elena <elena.reshetova@intel.com> | 2017-06-30 13:08:00 +0300 |
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committer | David S. Miller <davem@davemloft.net> | 2017-07-01 07:39:08 -0700 |
commit | 14afee4b6092fde451ee17604e5f5c89da33e71e (patch) | |
tree | 19be7a1d72a1b25c5e5366c1213cdda982aacca2 /net/core/skbuff.c | |
parent | 2638595afccf6554bfe55268ff9b2d3ac3dff2e6 (diff) | |
download | op-kernel-dev-14afee4b6092fde451ee17604e5f5c89da33e71e.zip op-kernel-dev-14afee4b6092fde451ee17604e5f5c89da33e71e.tar.gz |
net: convert sock.sk_wmem_alloc 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/core/skbuff.c')
-rw-r--r-- | net/core/skbuff.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 659dfc0..c267713 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -3024,7 +3024,7 @@ int skb_append_datato_frags(struct sock *sk, struct sk_buff *skb, get_page(pfrag->page); skb->truesize += copy; - atomic_add(copy, &sk->sk_wmem_alloc); + refcount_add(copy, &sk->sk_wmem_alloc); skb->len += copy; skb->data_len += copy; offset += copy; |