Correct skb refcount in alloc_ctrl_skb(), causing skb memleak
when chtls_send_abort() called with NULL skb.
Also race between user context and softirq causing memleak,
consider the call sequence scenario
chtls_setkey() //user context
chtls_peer_close()
chtls_abort_req_rss()
chtls_setkey() //user context
work request skb queued in chtls_setkey() won't be freed
because resources are already cleaned for this connection,
fix it by not queuing work request while socket is closing.
v1->v2:
- fix W=1 warning.
Fixes: cc35c88ae4db ("crypto : chtls - CPL handler definition")
Signed-off-by: Vinay Kumar Yadav <[email protected]>
---
drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c | 2 +-
drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_hw.c | 3 +++
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c
b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c
index 24154816d1d1..63aacc184f68 100644
--- a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c
+++ b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c
@@ -212,7 +212,7 @@ static struct sk_buff *alloc_ctrl_skb(struct sk_buff *skb,
int len)
{
if (likely(skb && !skb_shared(skb) && !skb_cloned(skb))) {
__skb_trim(skb, 0);
- refcount_add(2, &skb->users);
+ refcount_inc(&skb->users);
} else {
skb = alloc_skb(len, GFP_KERNEL | __GFP_NOFAIL);
}
diff --git a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_hw.c
b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_hw.c
index f1820aca0d33..62c829023da5 100644
--- a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_hw.c
+++ b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_hw.c
@@ -383,6 +383,9 @@ int chtls_setkey(struct chtls_sock *csk, u32 keylen,
if (ret)
goto out_notcb;
+ if (unlikely(csk_flag(sk, CSK_ABORT_SHUTDOWN)))
+ goto out_notcb;
+
set_wr_txq(skb, CPL_PRIORITY_DATA, csk->tlshws.txqid);
csk->wr_credits -= DIV_ROUND_UP(len, 16);
csk->wr_unacked += DIV_ROUND_UP(len, 16);
--
2.18.1
