fork07 in ubuntu_ltp_syscalls failed with T-3.13

Issue found with T-3.13.0-193

This failure should not be considered as a regression, as we didn't run ubuntu_ltp_syscalls on this kernel until we have openstack support added recently.

INFO: Test start time: Thu Aug 17 03:37:50 UTC 2023
COMMAND: /opt/ltp/bin/ltp-pan -q -e -S -a 23655 -n 23655 -f /tmp/ltp-BVFcJCpZxb/alltests -l /dev/null -C /dev/null -T /dev/null
LOG File: /dev/null
FAILED COMMAND File: /dev/null
TCONF COMMAND File: /dev/null
Running tests.......
tst_test.c:1560: TINFO: Timeout per run is 0h 00m 30s
fork07.c:50: TFAIL: read() returns 1, expected 0

Summary:
passed 0
failed 1
broken 0
skipped 0
warnings 0
INFO: ltp-pan reported some tests FAIL
LTP Version: 20230516
INFO: Test end time: Thu Aug 17 03:37:50 UTC 2023