Author: arybchik
Date: Wed Dec 26 09:34:26 2018
New Revision: 342481
URL: https://svnweb.freebsd.org/changeset/base/342481

Log:
  MFC r340798
  
  sfxge(4): fix out of bounds read in VIs allocation
  
  Submitted by:   Andy Moreton <amoreton at solarflare.com>
  Sponsored by:   Solarflare Communications, Inc.
  Differential Revision:  https://reviews.freebsd.org/D18068

Modified:
  stable/10/sys/dev/sfxge/common/ef10_nic.c
Directory Properties:
  stable/10/   (props changed)

Modified: stable/10/sys/dev/sfxge/common/ef10_nic.c
==============================================================================
--- stable/10/sys/dev/sfxge/common/ef10_nic.c   Wed Dec 26 09:33:26 2018        
(r342480)
+++ stable/10/sys/dev/sfxge/common/ef10_nic.c   Wed Dec 26 09:34:26 2018        
(r342481)
@@ -557,7 +557,7 @@ efx_mcdi_alloc_vis(
 {
        efx_mcdi_req_t req;
        uint8_t payload[MAX(MC_CMD_ALLOC_VIS_IN_LEN,
-                           MC_CMD_ALLOC_VIS_OUT_LEN)];
+                           MC_CMD_ALLOC_VIS_EXT_OUT_LEN)];
        efx_rc_t rc;
 
        if (vi_countp == NULL) {
@@ -570,7 +570,7 @@ efx_mcdi_alloc_vis(
        req.emr_in_buf = payload;
        req.emr_in_length = MC_CMD_ALLOC_VIS_IN_LEN;
        req.emr_out_buf = payload;
-       req.emr_out_length = MC_CMD_ALLOC_VIS_OUT_LEN;
+       req.emr_out_length = MC_CMD_ALLOC_VIS_EXT_OUT_LEN;
 
        MCDI_IN_SET_DWORD(req, ALLOC_VIS_IN_MIN_VI_COUNT, min_vi_count);
        MCDI_IN_SET_DWORD(req, ALLOC_VIS_IN_MAX_VI_COUNT, max_vi_count);
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