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Date:   Thu, 10 Sep 2020 01:55:40 +0530
From:   Vinay Kumar Yadav <>
Cc:, Vinay Kumar Yadav <>
Subject: [PATCH net-next 6/6] chelsio/chtls: Fix writing freed memory

When chtls_sock *csk is freed, same memory can be allocated
to different csk in chtls_sock_create().
csk->cdev = NULL; statement might ends up modifying wrong
csk, eventually causing kernel panic.
removing (csk->cdev = NULL) statement as it is not required.

Fixes: 3a0a97838923 ("crypto/chtls: Fix chtls crash in connection cleanup")
Signed-off-by: Vinay Kumar Yadav <>
 drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c | 1 -
 1 file changed, 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 bdb53fa41022..ec4f79049a06 100644
--- a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c
+++ b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c
@@ -483,7 +483,6 @@ void chtls_destroy_sock(struct sock *sk)
 	kref_put(&csk->kref, chtls_sock_release);
-	csk->cdev = NULL;
 	if (sk->sk_family == AF_INET)
 		sk->sk_prot = &tcp_prot;

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