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| author | Reshetova, Elena <elena.reshetova@intel.com> | 2017-06-30 13:08:01 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-07-01 07:39:08 -0700 |
| commit | 41c6d650f6537e55a1b53438c646fbc3f49176bf (patch) | |
| tree | d7fb3d5a2f1b3fb0fe76fa010141be563488d36b /crypto | |
| parent | 14afee4b6092fde451ee17604e5f5c89da33e71e (diff) | |
| download | linux-41c6d650f6537e55a1b53438c646fbc3f49176bf.tar.gz linux-41c6d650f6537e55a1b53438c646fbc3f49176bf.tar.bz2 linux-41c6d650f6537e55a1b53438c646fbc3f49176bf.zip | |
net: convert sock.sk_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.
This patch uses refcount_inc_not_zero() instead of
atomic_inc_not_zero_hint() due to absense of a _hint()
version of refcount API. If the hint() version must
be used, we might need to revisit API.
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 'crypto')
| -rw-r--r-- | crypto/algif_aead.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/algif_aead.c b/crypto/algif_aead.c index 8af664f7d27c..be117495eb43 100644 --- a/crypto/algif_aead.c +++ b/crypto/algif_aead.c @@ -877,7 +877,7 @@ static void aead_sock_destruct(struct sock *sk) unsigned int ivlen = crypto_aead_ivsize( crypto_aead_reqtfm(&ctx->aead_req)); - WARN_ON(atomic_read(&sk->sk_refcnt) != 0); + WARN_ON(refcount_read(&sk->sk_refcnt) != 0); aead_put_sgl(sk); sock_kzfree_s(sk, ctx->iv, ivlen); sock_kfree_s(sk, ctx, ctx->len); |