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cifs: check hash calculating succeeded

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calc_lanman_hash() could return -ENOMEM or other errors, we should check
that everything went fine before using the calculated key.

Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Steve French <smfrench@gmail.com>
This commit is contained in:
Luis de Bethencourt 2016-06-08 17:02:32 +01:00 committed by Steve French
parent b8da344b74
commit a6b6befbb2
1 changed files with 2 additions and 0 deletions
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2
fs/cifs/sess.c
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@ -710,6 +710,8 @@ sess_auth_lanman(struct sess_data *sess_data)
rc = calc_lanman_hash(ses->password, ses->server->cryptkey,
ses->server->sec_mode & SECMODE_PW_ENCRYPT ?
true : false, lnm_session_key);
if (rc)
goto out;
memcpy(bcc_ptr, (char *)lnm_session_key, CIFS_AUTH_RESP_SIZE);
bcc_ptr += CIFS_AUTH_RESP_SIZE;