From: Ganesh Goudar ganeshgr@chelsio.com
[ Upstream commit 65b2c12dcdb883fc015c0ec65d6c2f857e0456ac ]
call chtls_free_uld() only for the initialized cdev, this fixes NULL dereference in chtls_free_uld()
Signed-off-by: Ganesh Goudar ganeshgr@chelsio.com Signed-off-by: Atul Gupta atul.gupta@chelsio.com Signed-off-by: Herbert Xu herbert@gondor.apana.org.au Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- drivers/crypto/chelsio/chtls/chtls.h | 5 +++++ drivers/crypto/chelsio/chtls/chtls_main.c | 7 +++++-- 2 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/crypto/chelsio/chtls/chtls.h b/drivers/crypto/chelsio/chtls/chtls.h index a53a0e6ba024..7725b6ee14ef 100644 --- a/drivers/crypto/chelsio/chtls/chtls.h +++ b/drivers/crypto/chelsio/chtls/chtls.h @@ -96,6 +96,10 @@ enum csk_flags { CSK_CONN_INLINE, /* Connection on HW */ };
+enum chtls_cdev_state { + CHTLS_CDEV_STATE_UP = 1 +}; + struct listen_ctx { struct sock *lsk; struct chtls_dev *cdev; @@ -146,6 +150,7 @@ struct chtls_dev { unsigned int send_page_order; int max_host_sndbuf; struct key_map kmap; + unsigned int cdev_state; };
struct chtls_hws { diff --git a/drivers/crypto/chelsio/chtls/chtls_main.c b/drivers/crypto/chelsio/chtls/chtls_main.c index 9b07f9165658..f59b044ebd25 100644 --- a/drivers/crypto/chelsio/chtls/chtls_main.c +++ b/drivers/crypto/chelsio/chtls/chtls_main.c @@ -160,6 +160,7 @@ static void chtls_register_dev(struct chtls_dev *cdev) tlsdev->hash = chtls_create_hash; tlsdev->unhash = chtls_destroy_hash; tls_register_device(&cdev->tlsdev); + cdev->cdev_state = CHTLS_CDEV_STATE_UP; }
static void chtls_unregister_dev(struct chtls_dev *cdev) @@ -281,8 +282,10 @@ static void chtls_free_all_uld(void) struct chtls_dev *cdev, *tmp;
mutex_lock(&cdev_mutex); - list_for_each_entry_safe(cdev, tmp, &cdev_list, list) - chtls_free_uld(cdev); + list_for_each_entry_safe(cdev, tmp, &cdev_list, list) { + if (cdev->cdev_state == CHTLS_CDEV_STATE_UP) + chtls_free_uld(cdev); + } mutex_unlock(&cdev_mutex); }