Originally posted by: sanket
Are you using AIX toolbox repository ?
The current version of lsof on repository is 4.89 which works with AIX 7.1
The core dump is coming from lsof-4.61-4 which is installed on your system. I am not seeing this on toolbox.
Could you please try installing 4.89 lsof from toolbox
https://public.dhe.ibm.com/aix/freeSoftware/aixtoolbox/RPMS/ppc/lsof/?C=M;O=D
The lsof from toolbox does not have any dependency.
# rpm -qa | grep lsof
lsof-4.89-1.ppc
# rpm -q --requires lsof-4.89-1.ppc
#
Also if you are using AIX toolbox repository then could you please clear all cache data "yum clean all" and then try.