D18252.diff
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	Index: head/sys/dev/sfxge/common/mcdi_mon.c
	===================================================================
	--- head/sys/dev/sfxge/common/mcdi_mon.c
	+++ head/sys/dev/sfxge/common/mcdi_mon.c
	@@ -221,7 +221,13 @@
	uint8_t payload[MAX(MC_CMD_READ_SENSORS_EXT_IN_LEN,
	MC_CMD_READ_SENSORS_EXT_OUT_LEN)];
	uint32_t addr_lo, addr_hi;
	+ efx_rc_t rc;

	+ if (EFSYS_MEM_SIZE(esmp) < size) {
	+ rc = EINVAL;
	+ goto fail1;
	+ }
	+
	req.emr_cmd = MC_CMD_READ_SENSORS;
	req.emr_in_buf = payload;
	req.emr_in_length = MC_CMD_READ_SENSORS_EXT_IN_LEN;
	@@ -238,6 +244,11 @@
	efx_mcdi_execute(enp, &req);

	return (req.emr_rc);
	+
	+fail1:
	+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
	+
	+ return (rc);
	}

	static __checkReturn efx_rc_t