iser: set sector for ambiguous mr status errors

commit 24c3456c8d5ee6fc1933ca40f7b4406130682668 upstream.

If for some reason we failed to query the mr status, we need to make sure
to provide sufficient information for an ambiguous error (guard error on
sector 0).

Fixes: 0a7a08ad6f5f ("IB/iser: Implement check_protection")
Cc: <stable@vger.kernel.org>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/infiniband/ulp/iser/iser_verbs.c b/drivers/infiniband/ulp/iser/iser_verbs.c
index 55a73b0ed4c66f1f34da8067bd4d57376f84febb..e28a5d713d1a9544af84341582513226ebf034c3 100644 (file)
--- a/drivers/infiniband/ulp/iser/iser_verbs.c
+++ b/drivers/infiniband/ulp/iser/iser_verbs.c
@@ -1108,7 +1108,9 @@ u8 iser_check_task_pi_status(struct iscsi_iser_task *iser_task,
                                         IB_MR_CHECK_SIG_STATUS, &mr_status);
                if (ret) {
                        pr_err("ib_check_mr_status failed, ret %d\n", ret);
-                       goto err;
+                       /* Not a lot we can do, return ambiguous guard error */
+                       *sector = 0;
+                       return 0x1;
                }
 
                if (mr_status.fail_status & IB_MR_CHECK_SIG_STATUS) {
@@ -1136,9 +1138,6 @@ u8 iser_check_task_pi_status(struct iscsi_iser_task *iser_task,
        }
 
        return 0;
-err:
-       /* Not alot we can do here, return ambiguous guard error */
-       return 0x1;
 }
 
 void iser_err_comp(struct ib_wc *wc, const char *type)