How to kill stuck php-fpm processes

I have a production server, where I am not able to kill php-fpm processes. I am not able to kill any of the following process with kill -9. service php-fpm start,keeps on running, but doesnt give any error or output. System Reboot is not an option :( [root@vtermination etc]# ps aux | grep "php" root 1142 0.0 0.2 753984 35532 ? D 19:04 0:00 php-fpm-5.5 root 3133 0.0 0.2 753840 35220 ? D 19:43 0:00 php-fpm has invoked oom-killer root 3591 0.0 0.2 753984 35536 ? D 19:11 0:00 php-fpm-5.5 nginx 5470 0.0 0.2 761196 32960 ? D 17:01 0:00 php-fpm: pool www nginx 5548 0.0 0.2 835268 38768 ? D 17:01 0:00 php-fpm: pool www root 6917 0.0 0.2 753984 35636 ? D 19:05 0:00 php-fpm-5.5 nginx 7266 0.0 0.2 761848 36652 ? D 17:02 0:00 php-fpm: pool www root 7308 0.0 0.2 753984 35536 ? D 19:12 0:00 php-fpm-5.5 root 9638 0.0 0.2 641444 31820 ? S 19:22 0:00 /usr/bin/php -q /home/vtermina/private/crons/text/text_failed_sockets.php root 10103 0.0 0.2 753984 35428 pts/4 D 19:12 0:00 php-fpm-5.5 nginx 10951 0.0 0.2 761472 33520 ? D 17:36 0:00 php-fpm: pool www nginx 10955 0.0 0.2 761192 34024 ? D 17:36 0:00 php-fpm: pool www nginx 10958 0.0 0.2 761580 34196 ? D 17:36 0:00 php-fpm: pool www nginx 10961 0.0 0.2 761392 35504 ? D 17:36 0:00 php-fpm: pool www root 11123 0.0 0.2 753984 35512 ? D 19:13 0:00 php-fpm-5.5 root 12141 0.0 0.2 753984 35372 ? D 19:06 0:00 php-fpm-5.5 root 17819 0.0 0.2 753984 35576 ? D 19:22 0:00 php-fpm-5.5 root 18166 0.0 0.2 753984 35588 ? D 19:23 0:00 php-fpm-5.5 root 19724 0.0 0.2 753984 35576 ? D 19:07 0:00 php-fpm-5.5 root 20242 0.0 0.0 110388 1808 pts/4 S+ 19:49 0:00 grep php root 22224 0.0 0.2 753984 35508 ? D 19:08 0:00 php-fpm-5.5 root 23341 0.0 0.2 753984 35616 pts/5 D 19:08 0:00 php-fpm-5.5 root 24044 0.0 0.2 753984 35448 ? D 19:09 0:00 php-fpm-5.5 root 24715 0.0 0.2 753956 35164 pts/5 D+ 19:15 0:00 php-fpm -t root 25229 0.0 0.2 753984 35660 pts/6 D 19:09 0:00 php-fpm-5.5 root 25439 0.0 0.2 753984 35540 ? D 19:10 0:00 php-fpm-5.5 root 25721 0.0 0.2 753984 35564 pts/3 D 19:00 0:00 php-fpm-5.5 root 26046 0.0 0.2 753984 35560 ? D 19:01 0:00 php-fpm-5.5 root 28064 0.0 0.2 753984 35276 pts/4 D 19:01 0:00 php-fpm-5.5 root 28358 0.0 0.2 753984 35488 ? D 19:02 0:00 php-fpm-5.5 root 29052 0.0 0.2 753984 35604 ? D 19:03 0:00 php-fpm-5.5 nginx 29728 0.0 0.2 761148 31980 ? D 17:41 0:00 php-fpm: pool www nginx 29731 0.0 0.2 761868 35700 ? D 17:41 0:00 php-fpm: pool www nginx 31384 0.0 0.2 761788 39076 ? D 17:00 0:00 php-fpm: pool www Any suggestions ? Following are the two related questions, can there be any more solutions? https://superuser.com/questions/539920/cant-kill-a-sleeping-process?utm_medium=organic&utm_source=google_rich_qa&utm_campaign=google_rich_qa https://serverfault.com/questions/400021/nginx-php-fpm-processes-falls-in-uninterruptible-sleep