From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Vinay Kumar Yadav <vinay.yadav@chelsio.com>,
Herbert Xu <herbert@gondor.apana.org.au>,
Sasha Levin <sashal@kernel.org>,
linux-crypto@vger.kernel.org
Subject: [PATCH AUTOSEL 5.5 265/542] crypto: chtls - Fixed memory leak
Date: Fri, 14 Feb 2020 10:44:17 -0500 [thread overview]
Message-ID: <20200214154854.6746-265-sashal@kernel.org> (raw)
In-Reply-To: <20200214154854.6746-1-sashal@kernel.org>
From: Vinay Kumar Yadav <vinay.yadav@chelsio.com>
[ Upstream commit 93e23eb2ed6c11b4f483c8111ac155ec2b1f3042 ]
Freed work request skbs when connection terminates.
enqueue_wr()/ dequeue_wr() is shared between softirq
and application contexts, should be protected by socket
lock. Moved dequeue_wr() to appropriate file.
Signed-off-by: Vinay Kumar Yadav <vinay.yadav@chelsio.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/crypto/chelsio/chtls/chtls_cm.c | 27 +++++++++++++------------
drivers/crypto/chelsio/chtls/chtls_cm.h | 21 +++++++++++++++++++
drivers/crypto/chelsio/chtls/chtls_hw.c | 3 +++
3 files changed, 38 insertions(+), 13 deletions(-)
diff --git a/drivers/crypto/chelsio/chtls/chtls_cm.c b/drivers/crypto/chelsio/chtls/chtls_cm.c
index aca75237bbcf8..dffa2aa855fdd 100644
--- a/drivers/crypto/chelsio/chtls/chtls_cm.c
+++ b/drivers/crypto/chelsio/chtls/chtls_cm.c
@@ -727,6 +727,14 @@ static int chtls_close_listsrv_rpl(struct chtls_dev *cdev, struct sk_buff *skb)
return 0;
}
+static void chtls_purge_wr_queue(struct sock *sk)
+{
+ struct sk_buff *skb;
+
+ while ((skb = dequeue_wr(sk)) != NULL)
+ kfree_skb(skb);
+}
+
static void chtls_release_resources(struct sock *sk)
{
struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
@@ -741,6 +749,11 @@ static void chtls_release_resources(struct sock *sk)
kfree_skb(csk->txdata_skb_cache);
csk->txdata_skb_cache = NULL;
+ if (csk->wr_credits != csk->wr_max_credits) {
+ chtls_purge_wr_queue(sk);
+ chtls_reset_wr_list(csk);
+ }
+
if (csk->l2t_entry) {
cxgb4_l2t_release(csk->l2t_entry);
csk->l2t_entry = NULL;
@@ -1735,6 +1748,7 @@ static void chtls_peer_close(struct sock *sk, struct sk_buff *skb)
else
sk_wake_async(sk, SOCK_WAKE_WAITD, POLL_IN);
}
+ kfree_skb(skb);
}
static void chtls_close_con_rpl(struct sock *sk, struct sk_buff *skb)
@@ -2062,19 +2076,6 @@ static int chtls_conn_cpl(struct chtls_dev *cdev, struct sk_buff *skb)
return 0;
}
-static struct sk_buff *dequeue_wr(struct sock *sk)
-{
- struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
- struct sk_buff *skb = csk->wr_skb_head;
-
- if (likely(skb)) {
- /* Don't bother clearing the tail */
- csk->wr_skb_head = WR_SKB_CB(skb)->next_wr;
- WR_SKB_CB(skb)->next_wr = NULL;
- }
- return skb;
-}
-
static void chtls_rx_ack(struct sock *sk, struct sk_buff *skb)
{
struct cpl_fw4_ack *hdr = cplhdr(skb) + RSS_HDR;
diff --git a/drivers/crypto/chelsio/chtls/chtls_cm.h b/drivers/crypto/chelsio/chtls/chtls_cm.h
index 129d7ac649a93..3fac0c74a41fa 100644
--- a/drivers/crypto/chelsio/chtls/chtls_cm.h
+++ b/drivers/crypto/chelsio/chtls/chtls_cm.h
@@ -185,6 +185,12 @@ static inline void chtls_kfree_skb(struct sock *sk, struct sk_buff *skb)
kfree_skb(skb);
}
+static inline void chtls_reset_wr_list(struct chtls_sock *csk)
+{
+ csk->wr_skb_head = NULL;
+ csk->wr_skb_tail = NULL;
+}
+
static inline void enqueue_wr(struct chtls_sock *csk, struct sk_buff *skb)
{
WR_SKB_CB(skb)->next_wr = NULL;
@@ -197,4 +203,19 @@ static inline void enqueue_wr(struct chtls_sock *csk, struct sk_buff *skb)
WR_SKB_CB(csk->wr_skb_tail)->next_wr = skb;
csk->wr_skb_tail = skb;
}
+
+static inline struct sk_buff *dequeue_wr(struct sock *sk)
+{
+ struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
+ struct sk_buff *skb = NULL;
+
+ skb = csk->wr_skb_head;
+
+ if (likely(skb)) {
+ /* Don't bother clearing the tail */
+ csk->wr_skb_head = WR_SKB_CB(skb)->next_wr;
+ WR_SKB_CB(skb)->next_wr = NULL;
+ }
+ return skb;
+}
#endif
diff --git a/drivers/crypto/chelsio/chtls/chtls_hw.c b/drivers/crypto/chelsio/chtls/chtls_hw.c
index 2a34035d3cfbc..a217fe72602d4 100644
--- a/drivers/crypto/chelsio/chtls/chtls_hw.c
+++ b/drivers/crypto/chelsio/chtls/chtls_hw.c
@@ -350,6 +350,7 @@ int chtls_setkey(struct chtls_sock *csk, u32 keylen, u32 optname)
kwr->sc_imm.cmd_more = cpu_to_be32(ULPTX_CMD_V(ULP_TX_SC_IMM));
kwr->sc_imm.len = cpu_to_be32(klen);
+ lock_sock(sk);
/* key info */
kctx = (struct _key_ctx *)(kwr + 1);
ret = chtls_key_info(csk, kctx, keylen, optname);
@@ -388,8 +389,10 @@ int chtls_setkey(struct chtls_sock *csk, u32 keylen, u32 optname)
csk->tlshws.txkey = keyid;
}
+ release_sock(sk);
return ret;
out_notcb:
+ release_sock(sk);
free_tls_keyid(sk);
out_nokey:
kfree_skb(skb);
--
2.20.1
next prev parent reply other threads:[~2020-02-14 15:54 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20200214154854.6746-1-sashal@kernel.org>
2020-02-14 15:40 ` [PATCH AUTOSEL 5.5 017/542] crypto: testmgr - don't try to decrypt uninitialized buffers Sasha Levin
2020-02-14 15:41 ` [PATCH AUTOSEL 5.5 092/542] crypto: arm/chacha - fix build failured when kernel mode NEON is disabled Sasha Levin
2020-02-14 15:43 ` [PATCH AUTOSEL 5.5 193/542] padata: validate cpumask without removed CPU during offline Sasha Levin
2020-02-14 15:43 ` [PATCH AUTOSEL 5.5 194/542] padata: always acquire cpu_hotplug_lock before pinst->lock Sasha Levin
2020-02-14 15:43 ` [PATCH AUTOSEL 5.5 242/542] crypto: inside-secure - add unspecified HAS_IOMEM dependency Sasha Levin
2020-02-14 15:43 ` [PATCH AUTOSEL 5.5 243/542] crypto: amlogic " Sasha Levin
2020-02-14 15:44 ` Sasha Levin [this message]
2020-02-14 15:44 ` [PATCH AUTOSEL 5.5 303/542] crypto: artpec6 - return correct error code for failed setkey() Sasha Levin
2020-02-14 15:44 ` [PATCH AUTOSEL 5.5 304/542] crypto: atmel-sha - fix error handling when setting hmac key Sasha Levin
2020-02-14 15:46 ` [PATCH AUTOSEL 5.5 378/542] crypto: hisilicon - Update debugfs usage of SEC V2 Sasha Levin
2020-02-14 15:46 ` [PATCH AUTOSEL 5.5 379/542] crypto: hisilicon - Bugfixed tfm leak Sasha Levin
2020-02-14 15:46 ` [PATCH AUTOSEL 5.5 380/542] crypto: essiv - fix AEAD capitalization and preposition use in help text Sasha Levin
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