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authorHerbert Xu <herbert@gondor.apana.org.au>2016-01-13 14:59:03 +0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-02-17 12:31:03 -0800
commit758c560bcbc7d7814a391597fbcba02f087fb7f7 (patch)
tree8512f7492226ca98c23645fc645421a2f877bbb5
parent2f129c2d4fdbdf159a5a86e0ee071406a4dd7a20 (diff)
crypto: af_alg - Allow af_af_alg_release_parent to be called on nokey path
commit 6a935170a980024dd29199e9dbb5c4da4767a1b9 upstream. This patch allows af_alg_release_parent to be called even for nokey sockets. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--crypto/af_alg.c9
-rw-r--r--include/crypto/if_alg.h1
2 files changed, 9 insertions, 1 deletions
diff --git a/crypto/af_alg.c b/crypto/af_alg.c
index 6566d2eb0142..e7cb8367771d 100644
--- a/crypto/af_alg.c
+++ b/crypto/af_alg.c
@@ -133,6 +133,12 @@ void af_alg_release_parent(struct sock *sk)
bool last;
sk = ask->parent;
+
+ if (ask->nokey_refcnt && !ask->refcnt) {
+ sock_put(sk);
+ return;
+ }
+
ask = alg_sk(sk);
lock_sock(sk);
@@ -268,8 +274,8 @@ int af_alg_accept(struct sock *sk, struct socket *newsock)
struct alg_sock *ask = alg_sk(sk);
const struct af_alg_type *type;
struct sock *sk2;
+ unsigned int nokey;
int err;
- bool nokey;
lock_sock(sk);
type = ask->type;
@@ -302,6 +308,7 @@ int af_alg_accept(struct sock *sk, struct socket *newsock)
sock_hold(sk);
alg_sk(sk2)->parent = sk;
alg_sk(sk2)->type = type;
+ alg_sk(sk2)->nokey_refcnt = nokey;
newsock->ops = type->ops;
newsock->state = SS_CONNECTED;
diff --git a/include/crypto/if_alg.h b/include/crypto/if_alg.h
index df8284415c56..a2bfd7843f18 100644
--- a/include/crypto/if_alg.h
+++ b/include/crypto/if_alg.h
@@ -31,6 +31,7 @@ struct alg_sock {
struct sock *parent;
unsigned int refcnt;
+ unsigned int nokey_refcnt;
const struct af_alg_type *type;
void *private;