[PATCH 5.4 12/49] chelsio/chtls: fix deadlock issue

Greg Kroah-Hartman
2020-10-31T11:35:24Z

From: Vinay Kumar Yadav <vinay.yadav@chelsio.com>

[ Upstream commit 28e9dcd9172028263c8225c15c4e329e08475e89 ]

In chtls_pass_establish() we hold child socket lock using bh_lock_sock
and we are again trying bh_lock_sock in add_to_reap_list, causing deadlock.
Remove bh_lock_sock in add_to_reap_list() as lock is already held.

Fixes: cc35c88ae4db ("crypto : chtls - CPL handler definition")
Signed-off-by: Vinay Kumar Yadav <vinay.yadav@chelsio.com>
Link: https://lore.kernel.org/r/20201025193538.31112-1-vinay.yadav@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 | 2 --
1 file changed, 2 deletions(-)

--- a/drivers/crypto/chelsio/chtls/chtls_cm.c
+++ b/drivers/crypto/chelsio/chtls/chtls_cm.c
@@ -1369,7 +1369,6 @@ static void add_to_reap_list(struct sock
struct chtls_sock *csk = sk->sk_user_data;

local_bh_disable();
- bh_lock_sock(sk);
release_tcp_port(sk); /* release the port immediately */

spin_lock(&reap_list_lock);
@@ -1378,7 +1377,6 @@ static void add_to_reap_list(struct sock
if (!csk->passive_reap_next)
schedule_work(&reap_task);
spin_unlock(&reap_list_lock);
- bh_unlock_sock(sk);
local_bh_enable();
}