diff mbox series

[net-next,05/10] s390/qeth: limit trace to valid data of command request

Message ID 20190212173325.36555-6-jwi@linux.ibm.com
State Accepted
Delegated to: David Miller
Headers show
Series s390/qeth: updates 2019-02-12 | expand

Commit Message

Julian Wiedmann Feb. 12, 2019, 5:33 p.m. UTC
'len' specifies how much data we send to the HW, don't dump beyond this
boundary.
As of today this is no big concern - commands are built in full, zeroed
pages.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
---
 drivers/s390/net/qeth_core_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 428175e1cb5d..ae2ea0a0edce 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -1991,7 +1991,7 @@  void qeth_prepare_control_data(struct qeth_card *card, int len,
 	card->seqno.pdu_hdr++;
 	memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
 	       &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
-	QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
+	QETH_DBF_HEX(CTRL, 2, iob->data, min(len, QETH_DBF_CTRL_LEN));
 }
 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);