ShellCheck - shell script analysis tool
version: 0.11.0
license: GNU General Public License, version 3
website: https://www.shellcheck.net
Redirect to /tmp/tmp.hiVy35Hygn and /tmp/tmp.0XodMgx9e3
Tree base:
be054cc66f73 ("net/sched: act_skbedit: fix divide-by-zero in tcf_skbedit_hash()")
Now at:
75ad14f3deb7 ("vsock: lock down child_ns_mode as write-once")
 ====== Checking before the patch ======
Checking tools/testing/selftests/vsock/vmtest.sh - 3bbe24ed85577bc751e7e913126d8b44bb8554cc21519ace46c3118b1749f848


In vmtest.sh line 14:
readonly SCRIPT_DIR="$(cd -P -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd -P)"
         ^--------^ SC2155 (warning): Declare and assign separately to avoid masking return values.


In vmtest.sh line 15:
readonly KERNEL_CHECKOUT=$(realpath "${SCRIPT_DIR}"/../../../../)
         ^-------------^ SC2155 (warning): Declare and assign separately to avoid masking return values.


In vmtest.sh line 44:
readonly LOG=$(mktemp /tmp/vsock_vmtest_XXXX.log)
         ^-^ SC2155 (warning): Declare and assign separately to avoid masking return values.


In vmtest.sh line 225:
init_namespaces() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 258:
cleanup() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 365:
	pushd "${KERNEL_CHECKOUT}" &>/dev/null
        ^-- SC2164 (warning): Use 'pushd ... || exit' or 'pushd ... || return' in case pushd fails.

Did you mean:
	pushd "${KERNEL_CHECKOUT}" &>/dev/null || exit


In vmtest.sh line 371:
	if ! make -j$(nproc); then
                    ^------^ SC2046 (warning): Quote this to prevent word splitting.


In vmtest.sh line 375:
	popd &>/dev/null
        ^--------------^ SC2164 (warning): Use 'popd ... || exit' or 'popd ... || return' in case popd fails.

Did you mean:
	popd &>/dev/null || exit


In vmtest.sh line 403:
terminate_pids() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 445:
		${kernel_opt} \
                ^-----------^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean:
		"${kernel_opt}" \


In vmtest.sh line 476:
wait_for_listener()
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 511:
vm_wait_for_listener() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 522:
host_wait_for_listener() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 549:
vm_dmesg_check() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 571:
vm_vsock_test() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 598:
			return $rc
                               ^-^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean:
			return "$rc"


In vmtest.sh line 606:
	return $rc
               ^-^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean:
	return "$rc"


In vmtest.sh line 609:
host_vsock_test() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 643:
			return $rc
                               ^-^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean:
			return "$rc"


In vmtest.sh line 651:
	return $rc
               ^-^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean:
	return "$rc"


In vmtest.sh line 685:
log_guest() {
^-- SC2120 (warning): log_guest references arguments, but none are ever passed.
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 689:
ns_get_mode() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 695:
test_ns_host_vsock_ns_mode_ok() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 709:
test_ns_diff_global_host_connect_to_global_vm_ok() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 762:
test_ns_diff_global_host_connect_to_local_vm_fails() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 805:
test_ns_diff_global_vm_connect_to_global_host_ok() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 868:
test_ns_diff_global_vm_connect_to_local_host_fails() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 919:
test_ns_diff_local_host_connect_to_local_vm_fails() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 964:
test_ns_diff_local_vm_connect_to_local_host_fails() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1012:
__test_loopback_two_netns() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1042:
test_ns_diff_global_to_local_loopback_local_fails() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1052:
test_ns_diff_local_to_global_loopback_fails() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1062:
test_ns_diff_local_to_local_loopback_fails() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1072:
test_ns_diff_global_to_global_loopback_ok() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1082:
test_ns_same_local_loopback_ok() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1092:
test_ns_same_local_host_connect_to_local_vm_ok() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1135:
test_ns_same_local_vm_connect_to_local_host_ok() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1171:
namespaces_can_boot_same_cid() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1193:
test_ns_global_same_cid_fails() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1203:
test_ns_local_global_same_cid_ok() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1213:
test_ns_global_local_same_cid_ok() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1223:
test_ns_local_same_cid_ok() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1233:
test_ns_host_vsock_child_ns_mode_ok() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1261:
test_vm_server_host_client() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1273:
test_vm_client_host_server() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1285:
test_vm_loopback() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1302:
check_ns_delete_doesnt_break_connection() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1362:
test_ns_delete_vm_ok() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1366:
test_ns_delete_host_ok() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1370:
test_ns_delete_both_ok() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1437:
	host_oops_cnt_after=$(dmesg | grep -i 'Oops' | wc -l)
                                      ^------------^ SC2126 (style): Consider using 'grep -c' instead of 'grep|wc -l'.

For more information:
  https://www.shellcheck.net/wiki/SC2046 -- Quote this to prevent word splitt...
  https://www.shellcheck.net/wiki/SC2120 -- log_guest references arguments, b...
  https://www.shellcheck.net/wiki/SC2155 -- Declare and assign separately to ...

 ====== Checking the tree with the patch ======
Checking tools/testing/selftests/vsock/vmtest.sh - 3bbe24ed85577bc751e7e913126d8b44bb8554cc21519ace46c3118b1749f848


In vmtest.sh line 14:
readonly SCRIPT_DIR="$(cd -P -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd -P)"
         ^--------^ SC2155 (warning): Declare and assign separately to avoid masking return values.


In vmtest.sh line 15:
readonly KERNEL_CHECKOUT=$(realpath "${SCRIPT_DIR}"/../../../../)
         ^-------------^ SC2155 (warning): Declare and assign separately to avoid masking return values.


In vmtest.sh line 44:
readonly LOG=$(mktemp /tmp/vsock_vmtest_XXXX.log)
         ^-^ SC2155 (warning): Declare and assign separately to avoid masking return values.


In vmtest.sh line 226:
init_namespaces() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 261:
cleanup() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 368:
	pushd "${KERNEL_CHECKOUT}" &>/dev/null
        ^-- SC2164 (warning): Use 'pushd ... || exit' or 'pushd ... || return' in case pushd fails.

Did you mean:
	pushd "${KERNEL_CHECKOUT}" &>/dev/null || exit


In vmtest.sh line 374:
	if ! make -j$(nproc); then
                    ^------^ SC2046 (warning): Quote this to prevent word splitting.


In vmtest.sh line 378:
	popd &>/dev/null
        ^--------------^ SC2164 (warning): Use 'popd ... || exit' or 'popd ... || return' in case popd fails.

Did you mean:
	popd &>/dev/null || exit


In vmtest.sh line 406:
terminate_pids() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 448:
		${kernel_opt} \
                ^-----------^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean:
		"${kernel_opt}" \


In vmtest.sh line 479:
wait_for_listener()
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 514:
vm_wait_for_listener() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 525:
host_wait_for_listener() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 552:
vm_dmesg_check() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 574:
vm_vsock_test() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 601:
			return $rc
                               ^-^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean:
			return "$rc"


In vmtest.sh line 609:
	return $rc
               ^-^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean:
	return "$rc"


In vmtest.sh line 612:
host_vsock_test() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 646:
			return $rc
                               ^-^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean:
			return "$rc"


In vmtest.sh line 654:
	return $rc
               ^-^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean:
	return "$rc"


In vmtest.sh line 688:
log_guest() {
^-- SC2120 (warning): log_guest references arguments, but none are ever passed.
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 692:
ns_get_mode() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 698:
test_ns_host_vsock_ns_mode_ok() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 712:
test_ns_diff_global_host_connect_to_global_vm_ok() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 765:
test_ns_diff_global_host_connect_to_local_vm_fails() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 808:
test_ns_diff_global_vm_connect_to_global_host_ok() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 871:
test_ns_diff_global_vm_connect_to_local_host_fails() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 922:
test_ns_diff_local_host_connect_to_local_vm_fails() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 967:
test_ns_diff_local_vm_connect_to_local_host_fails() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1015:
__test_loopback_two_netns() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1045:
test_ns_diff_global_to_local_loopback_local_fails() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1055:
test_ns_diff_local_to_global_loopback_fails() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1065:
test_ns_diff_local_to_local_loopback_fails() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1075:
test_ns_diff_global_to_global_loopback_ok() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1085:
test_ns_same_local_loopback_ok() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1095:
test_ns_same_local_host_connect_to_local_vm_ok() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1138:
test_ns_same_local_vm_connect_to_local_host_ok() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1174:
namespaces_can_boot_same_cid() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1196:
test_ns_global_same_cid_fails() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1206:
test_ns_local_global_same_cid_ok() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1216:
test_ns_global_local_same_cid_ok() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1226:
test_ns_local_same_cid_ok() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1236:
test_ns_host_vsock_child_ns_mode_ok() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1258:
test_vm_server_host_client() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1270:
test_vm_client_host_server() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1282:
test_vm_loopback() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1299:
check_ns_delete_doesnt_break_connection() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1359:
test_ns_delete_vm_ok() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1363:
test_ns_delete_host_ok() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1367:
test_ns_delete_both_ok() {
^-- SC2329 (info): This function is never invoked. Check usage (or ignored if invoked indirectly).


In vmtest.sh line 1434:
	host_oops_cnt_after=$(dmesg | grep -i 'Oops' | wc -l)
                                      ^------------^ SC2126 (style): Consider using 'grep -c' instead of 'grep|wc -l'.

For more information:
  https://www.shellcheck.net/wiki/SC2046 -- Quote this to prevent word splitt...
  https://www.shellcheck.net/wiki/SC2120 -- log_guest references arguments, b...
  https://www.shellcheck.net/wiki/SC2155 -- Declare and assign separately to ...