Router crash with epoll error EPOLL_CTL_DEL

Feb 17 05:15:02 rh-amq-prd04.trfw.nx.digikey.com qdrouterd: epoll proactor failure in /builddir/build/BUILD/qpid-proton-0.28.0/c/src/proactor/epoll.c:312: "EPOLL_CTL_DEL": No such file or directory
Feb 17 05:15:02 rh-amq-prd04.trfw.nx.digikey.com systemd: qdrouterd.service: main process exited, code=killed, status=6/ABRT
Feb 17 05:15:02 rh-amq-prd04.trfw.nx.digikey.com systemd: Unit qdrouterd.service entered failed state.
Feb 17 05:15:02 rh-amq-prd04.trfw.nx.digikey.com systemd: qdrouterd.service failed.

(gdb) bt
#0  0x00007fac95cda377 in killpg () from /lib64/libc.so.6
#1  0x00007fac95cdba68 in abort () from /lib64/libc.so.6
#2  0x00007fac96c942b2 in rearm (p=<optimized out>, ee=<optimized out>) at /usr/src/debug/qpid-proton-0.28.0/c/src/proactor/epoll.c:715
#3  0x00007fac96c94ca6 in rearm (ee=0x4309, p=<optimized out>) at /usr/src/debug/qpid-proton-0.28.0/c/src/proactor/epoll.c:715
#4  0x00007fac00007fac in ?? ()
#5  0x0000000001af08a0 in ?? ()
#6  0xf60b914474d73800 in ?? ()
#7  0x00007fac5e605600 in ?? ()
#8  0x00007fac5e605a90 in ?? ()
#9  0x00007fac5e605600 in ?? ()
#10 0x00007fac96c95673 in lock (m=0x4) at /usr/src/debug/qpid-proton-0.28.0/c/src/proactor/epoll.c:112
#11 pconnection_cleanup (pc=0x7fac5e605b48) at /usr/src/debug/qpid-proton-0.28.0/c/src/proactor/epoll.c:901
#12 0x00007fac96c9852c in pconnection_done (pc=0x7fac5e6055f0) at /usr/src/debug/qpid-proton-0.28.0/c/src/proactor/epoll.c:1044
#13 pn_proactor_done (p=<optimized out>, batch=batch@entry=0x7fac5e605ba0) at /usr/src/debug/qpid-proton-0.28.0/c/src/proactor/epoll.c:2166
#14 0x00007fac9714abee in thread_run (arg=0x1ae2bd0) at /usr/src/debug/qpid-dispatch-1.9.0/src/server.c:1029
#15 0x00007fac96a7cea5 in start_thread () from /lib64/libpthread.so.0
#16 0x00007fac95da28cd in lseek64 () from /lib64/libc.so.6
#17 0x0000000000000000 in ?? ()
(gdb) info threads
  Id   Target Id         Frame 
  10   LWP 17163         0x00007fac95da2ea3 in get_kernel_syms () from /lib64/libc.so.6
  9    LWP 17157         0x00007fac96a80a35 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
  8    LWP 17138         0x00007fac95da2ea3 in get_kernel_syms () from /lib64/libc.so.6
  7    LWP 17159         0x00007fac95da2ea3 in get_kernel_syms () from /lib64/libc.so.6
  6    LWP 17165         0x00007fac95da2ea3 in get_kernel_syms () from /lib64/libc.so.6
  5    LWP 17164         0x00007fac95da2ea3 in get_kernel_syms () from /lib64/libc.so.6
  4    LWP 17162         0x00007fac95da2ea3 in get_kernel_syms () from /lib64/libc.so.6
  3    LWP 17160         0x00007fac95da2ea3 in get_kernel_syms () from /lib64/libc.so.6
  2    LWP 17158         0x00007fac95d97c2d in ppoll () from /lib64/libc.so.6
* 1    LWP 17161         0x00007fac95cda377 in killpg () from /lib64/libc.so.6
(gdb) up
#1  0x00007fac95cdba68 in abort () from /lib64/libc.so.6
(gdb) 
#2  0x00007fac96c942b2 in rearm (p=<optimized out>, ee=<optimized out>) at /usr/src/debug/qpid-proton-0.28.0/c/src/proactor/epoll.c:715
715	static void rearm(pn_proactor_t *p, epoll_extended_t *ee) {
(gdb) 
#3  0x00007fac96c94ca6 in rearm (ee=0x4309, p=<optimized out>) at /usr/src/debug/qpid-proton-0.28.0/c/src/proactor/epoll.c:715
715	static void rearm(pn_proactor_t *p, epoll_extended_t *ee) {
(gdb) 
#4  0x00007fac00007fac in ?? ()
(gdb) 
#5  0x0000000001af08a0 in ?? ()
(gdb) 
#6  0xf60b914474d73800 in ?? ()
(gdb) 
#7  0x00007fac5e605600 in ?? ()
(gdb) 
#8  0x00007fac5e605a90 in ?? ()
(gdb) 
#9  0x00007fac5e605600 in ?? ()
(gdb) 
#10 0x00007fac96c95673 in lock (m=0x4) at /usr/src/debug/qpid-proton-0.28.0/c/src/proactor/epoll.c:112
112	static inline void lock(pmutex *m) { pthread_mutex_lock(m); }
(gdb) 
#11 pconnection_cleanup (pc=0x7fac5e605b48) at /usr/src/debug/qpid-proton-0.28.0/c/src/proactor/epoll.c:901
901	  lock(&pc->context.mutex);
(gdb) 
#12 0x00007fac96c9852c in pconnection_done (pc=0x7fac5e6055f0) at /usr/src/debug/qpid-proton-0.28.0/c/src/proactor/epoll.c:1044
1044	      pconnection_cleanup(pc);
(gdb) 
#13 pn_proactor_done (p=<optimized out>, batch=batch@entry=0x7fac5e605ba0) at /usr/src/debug/qpid-proton-0.28.0/c/src/proactor/epoll.c:2166
2166	    pconnection_done(pc);
(gdb) 
#14 0x00007fac9714abee in thread_run (arg=0x1ae2bd0) at /usr/src/debug/qpid-dispatch-1.9.0/src/server.c:1029
1029	        pn_proactor_done(qd_server->proactor, events);
(gdb) 
#15 0x00007fac96a7cea5 in start_thread () from /lib64/libpthread.so.0
(gdb)