JVM stuck/looping in futex call

[Sundara Mohan M]

Hi,
    I am running openjdk12/Linux on our systems and see jvm not responding
to jstack or any diagnostic command (jcmd VM.info/Thread.print). Though
application is running fine.

I see following stack track

Process 115586 attached
futex(0x7feeeffa19d0, FUTEX_WAIT, 116198, NULL) = ? ERESTARTSYS (To be
restarted if SA_RESTART is set)
--- SIGQUIT {si_signo=SIGQUIT, si_code=SI_USER, si_pid=115587, si_uid=1000}
---
futex(0x7feee8008bf8, FUTEX_WAKE_PRIVATE, 1) = 1
rt_sigreturn()                          = 202
futex(0x7feeeffa19d0, FUTEX_WAIT, 116198, NULL) = ? ERESTARTSYS (To be
restarted if SA_RESTART is set)
--- SIGQUIT {si_signo=SIGQUIT, si_code=SI_USER, si_pid=115587, si_uid=1000}
---
futex(0x7feee8008bf8, FUTEX_WAKE_PRIVATE, 1) = 1
rt_sigreturn()                          = 202
futex(0x7feeeffa19d0, FUTEX_WAIT, 116198, NULL) = ? ERESTARTSYS (To be
restarted if SA_RESTART is set)
--- SIGQUIT {si_signo=SIGQUIT, si_code=SI_USER, si_pid=115587, si_uid=1000}
---
futex(0x7feee8008bf8, FUTEX_WAKE_PRIVATE, 1) = 1
rt_sigreturn()                          = 202
futex(0x7feeeffa19d0, FUTEX_WAIT, 116198, NULL) = ? ERESTARTSYS (To be
restarted if SA_RESTART is set)
--- SIGQUIT {si_signo=SIGQUIT, si_code=SI_USER, si_pid=115587, si_uid=1000}
---
rt_sigreturn()                          = 202
futex(0x7feeeffa19d0, FUTEX_WAIT, 116198, NULL) = ? ERESTARTSYS (To be
restarted if SA_RESTART is set)
--- SIGQUIT {si_signo=SIGQUIT, si_code=SI_USER, si_pid=115587, si_uid=1000}
---
rt_sigreturn()                          = 202
futex(0x7feeeffa19d0, FUTEX_WAIT, 116198, NULL^CProcess 115586 detached
 <detached ...>

Can someone help me understand what is happening here?

Please redirect me to proper ilist if this is not correct list for these
type of questions.

TIA
Sundar