Server continues to spawn ksh processes

Issue

• System keeps spawning ksh process like below. It spawns about 300 per sec.

user1  1464992 1464991  0 12:14 ?        00:00:00 -ksh
user1  1464993 1464992  0 12:14 ?        00:00:00 -ksh
user1  1464994 1464993  0 12:14 ?        00:00:00 -ksh
user1  1464995 1464994  0 12:14 ?        00:00:00 -ksh
user1  1464996 1464995  0 12:14 ?        00:00:00 -ksh
user1  1464997 1464996  0 12:14 ?        00:00:00 -ksh
user1  1464998 1464997  0 12:14 ?        00:00:00 -ksh

• Processes are not responding to SIGSTP properly

[root@devserv test]# strace -p 2243414
Process 2243414 attached - interrupt to quit
wait4(-1, 0x7fff5a87fee4, WSTOPPED|WCONTINUED, NULL) = ? ERESTARTSYS (To be restarted)
--- SIGTSTP (Stopped) @ 0 (0) ---
rt_sigaction(SIGTSTP, {0x416c10, [], SA_RESTORER|SA_RESTART, 0x381e4302d0}, {0x416c10, [], SA_RESTORER|SA_RESTART, 0x381e4302d0}, 8) = 0
rt_sigreturn(0x14)                      = 61
wait4(-1, 0x7fff5a87fee4, WSTOPPED|WCONTINUED, NULL) = ? ERESTARTSYS (To be restarted)
--- SIGTSTP (Stopped) @ 0 (0) ---
rt_sigaction(SIGTSTP, {0x416c10, [], SA_RESTORER|SA_RESTART, 0x381e4302d0}, {0x416c10, [], SA_RESTORER|SA_RESTART, 0x381e4302d0}, 8) = 0
rt_sigreturn(0x14)                      = 61
wait4(-1, 0x7fff5a87fee4, WSTOPPED|WCONTINUED, NULL) = ? ERESTARTSYS (To be restarted)
--- SIGTSTP (Stopped) @ 0 (0) ---
rt_sigaction(SIGTSTP, {0x416c10, [], SA_RESTORER|SA_RESTART, 0x381e4302d0}, {0x416c10, [], SA_RESTORER|SA_RESTART, 0x381e4302d0}, 8) = 0
rt_sigreturn(0x14)                      = 61
wait4(-1, 0x7fff5a87fee4, WSTOPPED|WCONTINUED, NULL) = ? ERESTARTSYS (To be restarted)
--- SIGTSTP (Stopped) @ 0 (0) ---
rt_sigaction(SIGTSTP, {0x416c10, [], SA_RESTORER|SA_RESTART, 0x381e4302d0}, {0x416c10, [], SA_RESTORER|SA_RESTART, 0x381e4302d0}, 8) = 0
rt_sigreturn(0x14)                      = 61
wait4(-1, 0x7fff5a87fee4, WSTOPPED|WCONTINUED, NULL) = ? ERESTARTSYS (To be restarted)