From: Salah Triki salah.triki@gmail.com
[ Upstream commit af5226abb40cae959f424f7ca614787a1c87ce48 ]
xa_store() may fail so check its return value and return error code if error occurred.
Signed-off-by: Salah Triki salah.triki@gmail.com Acked-by: Namjae Jeon linkinjeon@kernel.org Signed-off-by: Steve French stfrench@microsoft.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/smb/server/smb2pdu.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/fs/smb/server/smb2pdu.c b/fs/smb/server/smb2pdu.c index 57839f9708bb6..372021b3f2632 100644 --- a/fs/smb/server/smb2pdu.c +++ b/fs/smb/server/smb2pdu.c @@ -1445,7 +1445,7 @@ static int ntlm_authenticate(struct ksmbd_work *work, { struct ksmbd_conn *conn = work->conn; struct ksmbd_session *sess = work->sess; - struct channel *chann = NULL; + struct channel *chann = NULL, *old; struct ksmbd_user *user; u64 prev_id; int sz, rc; @@ -1557,7 +1557,12 @@ static int ntlm_authenticate(struct ksmbd_work *work, return -ENOMEM;
chann->conn = conn; - xa_store(&sess->ksmbd_chann_list, (long)conn, chann, KSMBD_DEFAULT_GFP); + old = xa_store(&sess->ksmbd_chann_list, (long)conn, chann, + KSMBD_DEFAULT_GFP); + if (xa_is_err(old)) { + kfree(chann); + return xa_err(old); + } } }