ShellCheck - shell script analysis tool
version: 0.10.0
license: GNU General Public License, version 3
website: https://www.shellcheck.net
Redirect to /tmp/tmp.Rlr8U8Wf3V and /tmp/tmp.qx6HUVdmXF
Tree base:
b1c92cdf5af3 ("Merge branch 'net-wangxun-complete-ethtool-coalesce-options'")
Now at:
eee129f77be7 ("selftests: net: add test for broadcast destination")
 ====== Checking before the patch ======
 ====== Checking the tree with the patch ======
Checking tools/testing/selftests/net/broadcast_ether_dst.sh - 02463acdefff73204eb245d18956dfe65bef2c07e1c12b14e9483d0974d1ff14


In broadcast_ether_dst.sh line 11:
        exit $ERR
             ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 
        exit "$ERR"


In broadcast_ether_dst.sh line 19:
timeout 2s tcpdump -c 1 -w ${CAPFILE} udp port 9 > /dev/null 2>&1 &
                           ^--------^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 
timeout 2s tcpdump -c 1 -w "${CAPFILE}" udp port 9 > /dev/null 2>&1 &


In broadcast_ether_dst.sh line 34:
printf '\xff\xff\xff\xff\xff\xff'| cmp -i40:0 -n6 ${CAPFILE} > /dev/null 2>&1
                                                  ^--------^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 
printf '\xff\xff\xff\xff\xff\xff'| cmp -i40:0 -n6 "${CAPFILE}" > /dev/null 2>&1

For more information:
  https://www.shellcheck.net/wiki/SC2086 -- Double quote to prevent globbing ...