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scsi: libfc: check fc_frame_payload_get() return value for null

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We should not assume the payload of a PRLI or PLOGI respons is always
present.

Signed-off-by: Thomas Abraham <tabraham@suse.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Arun Easi <arun.easi@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Thomas Abraham 2018-10-07 10:35:36 +02:00 committed by Martin K. Petersen
parent a33e5bfb29
commit aad1271a48
1 changed files with 10 additions and 4 deletions
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14
drivers/scsi/libfc/fc_rport.c
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@ -1038,8 +1038,11 @@ static void fc_rport_plogi_resp(struct fc_seq *sp, struct fc_frame *fp,
struct fc_els_ls_rjt *rjt;
rjt = fc_frame_payload_get(fp, sizeof(*rjt));
FC_RPORT_DBG(rdata, "PLOGI ELS rejected, reason %x expl %x\n",
rjt->er_reason, rjt->er_explan);
if (!rjt)
FC_RPORT_DBG(rdata, "PLOGI bad response\n");
else
FC_RPORT_DBG(rdata, "PLOGI ELS rejected, reason %x expl %x\n",
rjt->er_reason, rjt->er_explan);
fc_rport_error_retry(rdata, -FC_EX_ELS_RJT);
}
out:
@ -1211,8 +1214,11 @@ static void fc_rport_prli_resp(struct fc_seq *sp, struct fc_frame *fp,
} else {
rjt = fc_frame_payload_get(fp, sizeof(*rjt));
FC_RPORT_DBG(rdata, "PRLI ELS rejected, reason %x expl %x\n",
rjt->er_reason, rjt->er_explan);
if (!rjt)
FC_RPORT_DBG(rdata, "PRLI bad response\n");
else
FC_RPORT_DBG(rdata, "PRLI ELS rejected, reason %x expl %x\n",
rjt->er_reason, rjt->er_explan);
fc_rport_error_retry(rdata, FC_EX_ELS_RJT);
}