[PATCH 4.19 15/43] chtls: Fix chtls resources release sequence

Greg Kroah-Hartman
2021-01-15T13:01:51Z

From: Ayush Sawal <ayush.sawal@chelsio.com>

[ Upstream commit 15ef6b0e30b354253e2c10b3836bc59767eb162b ]

CPL_ABORT_RPL is sent after releasing the resources by calling
chtls_release_resources(sk); and chtls_conn_done(sk);
eventually causing kernel panic. Fixing it by calling release
in appropriate order.

Fixes: cc35c88ae4db ("crypto : chtls - CPL handler definition")
Signed-off-by: Vinay Kumar Yadav <vinay.yadav@chelsio.com>
Signed-off-by: Ayush Sawal <ayush.sawal@chelsio.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/crypto/chelsio/chtls/chtls_cm.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)

--- a/drivers/crypto/chelsio/chtls/chtls_cm.c
+++ b/drivers/crypto/chelsio/chtls/chtls_cm.c
@@ -1884,9 +1884,9 @@ static void bl_abort_syn_rcv(struct sock
queue = csk->txq_idx;

skb->sk = NULL;
- do_abort_syn_rcv(child, lsk);
chtls_send_abort_rpl(child, skb, BLOG_SKB_CB(skb)->cdev,
CPL_ABORT_NO_RST, queue);
+ do_abort_syn_rcv(child, lsk);
}

static int abort_syn_rcv(struct sock *sk, struct sk_buff *skb)
@@ -1916,8 +1916,8 @@ static int abort_syn_rcv(struct sock *sk
if (!sock_owned_by_user(psk)) {
int queue = csk->txq_idx;

- do_abort_syn_rcv(sk, psk);
chtls_send_abort_rpl(sk, skb, cdev, CPL_ABORT_NO_RST, queue);
+ do_abort_syn_rcv(sk, psk);
} else {
skb->sk = sk;
BLOG_SKB_CB(skb)->backlog_rcv = bl_abort_syn_rcv;
@@ -1960,12 +1960,11 @@ static void chtls_abort_req_rss(struct s

if (sk->sk_state == TCP_SYN_RECV && !abort_syn_rcv(sk, skb))
return;
-
- chtls_release_resources(sk);
- chtls_conn_done(sk);
}

chtls_send_abort_rpl(sk, skb, csk->cdev, rst_status, queue);
+ chtls_release_resources(sk);
+ chtls_conn_done(sk);
}

static void chtls_abort_rpl_rss(struct sock *sk, struct sk_buff *skb)