net/sfc/base: fix out of bounds read in VIs allocation

Coverity issue: 1349662
Fixes: e7cd430c864f ("net/sfc/base: import SFN7xxx family support")
Cc: stable@dpdk.org
Signed-off-by: Andy Moreton <amoreton@solarflare.com>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>

diff --git a/drivers/net/sfc/base/ef10_nic.c b/drivers/net/sfc/base/ef10_nic.c
index 3a74320..aac2679 100644 (file)
--- a/drivers/net/sfc/base/ef10_nic.c
+++ b/drivers/net/sfc/base/ef10_nic.c
@@ -501,7 +501,7 @@ 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) {
@@ -514,7 +514,7 @@ 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);