python.log getting filled with "epoll wait error: No such file or directory" prints

[root@AN test]# ps -ef | grep dnad

root      8366   837  0 03:51 ?        00:00:00 /ca/bin/dnad

root     12973 10895  0 04:02 pts/0    00:00:00 grep --color=auto dnad

[root@AN test]# ls -l /proc/8366/fd

total 0

lr-x------. 1 root root 64 Aug  7 03:57 0 -> /dev/null

lrwx------. 1 root root 64 Aug  7 03:57 1 -> /tmp/ca_pipe_dnad

lrwx------. 1 root root 64 Aug  7 03:57 2 -> /tmp/ca_pipe_dnad

lrwx------. 1 root root 64 Aug  7 03:57 3 -> anon_inode:[eventpoll]

lrwx------. 1 root root 64 Aug  7 03:57 6 -> /tmp/ca_pipe_dnad
Try to close epoll fd of dnad process

[root@AN test]# gdb -p 8366

(gdb) call (int)close(3)

$1 = 0

(gdb) quit

A debugging session is active.
    Inferior 1 [process 8366] will be detached.

Quit anyway? (y or n) y

Detaching from program: /ca/bin/dnad, process 8366
=================================================================

Observation in Buggy build:

Continuious logs exhausting the memory until you kill dnad process manually
[root@AN test]# tail -f  /var/crash/ca_log/dnad.log

GMT Wed 07 Aug 2024 01:23:13:epoll wait error: Bad file descriptor

GMT Wed 07 Aug 2024 01:23:13:epoll wait error: Bad file descriptor

GMT Wed 07 Aug 2024 01:23:13:epoll wait error: Bad file descriptor

GMT Wed 07 Aug 2024 01:23:13:epoll wait error: Bad file descriptor

GMT Wed 07 Aug 2024 01:23:13:epoll wait error: Bad file descriptor

GMT Wed 07 Aug 2024 01:23:13:epoll wait error: Bad file descriptor

GMT Wed 07 Aug 2024 01:23:13:epoll wait error: Bad file descriptor

GMT Wed 07 Aug 2024 01:23:13:epoll wait error: Bad file descriptor

GMT Wed 07 Aug 2024 01:23:13:epoll wait error: Bad file descriptor

GMT Wed 07 Aug 2024 01:23:13:epoll wait e

rror: Bad file descriptor

GMT Wed 07 Aug 2024 01:23:24:epoll wait error: Bad file descriptor
=======================================

Observation in fixed build:

New process 14643 restarted for dnad

[root@AN test]# ps -ef | grep dnad

root     14542 13838  0 04:09 pts/2    00:00:00 tail -f /var/crash/ca_log/dnad.log

root     14643   837  0 04:09 ?        00:00:00 /ca/bin/dnad

root     14663 10895  0 04:09 pts/0    00:00:00 grep --color=auto dnad
Print the log in /var/crash/ca_log/dnad.log only one time and restart the dnad process

[root@AN test]# tail -f /var/crash/ca_log/dnad.log

GMT Wed 07 Aug 2024 03:29:35:Begin to write log......

CST Wed 07 Aug 2024 11:51:21:Begin to write log......

GMT Wed 07 Aug 2024 04:09:14:epoll wait error: Interrupted system call