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| author | Julian Wiedmann <jwi@linux.vnet.ibm.com> | 2017-12-20 18:07:18 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-12-20 15:11:49 -0500 |
| commit | ad3cbf61332914711e5f506972b1dc9af8d62146 (patch) | |
| tree | 4d2dc91ffa39b5aa9d169c39a1af3446868b5a92 | |
| parent | bb25c3855a12cc58e33cd7ee9b69943790fe35f7 (diff) | |
| download | linux-ad3cbf61332914711e5f506972b1dc9af8d62146.tar.bz2 | |
s390/qeth: fix error handling in checksum cmd callback
Make sure to check both return code fields before processing the
response. Otherwise we risk operating on invalid data.
Fixes: c9475369bd2b ("s390/qeth: rework RX/TX checksum offload")
Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/s390/net/qeth_core_main.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index 6c815207f4f5..3614df68830f 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -5386,6 +5386,13 @@ out: } EXPORT_SYMBOL_GPL(qeth_poll); +static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd) +{ + if (!cmd->hdr.return_code) + cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; + return cmd->hdr.return_code; +} + int qeth_setassparms_cb(struct qeth_card *card, struct qeth_reply *reply, unsigned long data) { @@ -6242,7 +6249,7 @@ static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card, (struct qeth_checksum_cmd *)reply->param; QETH_CARD_TEXT(card, 4, "chkdoccb"); - if (cmd->hdr.return_code) + if (qeth_setassparms_inspect_rc(cmd)) return 0; memset(chksum_cb, 0, sizeof(*chksum_cb)); |