Thread 5 (LWP 26300):
#0  0x0000003093608d97 in pthread_join (threadid=231708416, thread_return=0x0) at pthread_join.c:92
#1  0x0000000004a08c6b in pthread_join_WRK () from /usr/lib64/valgrind/vgpreload_helgrind-amd64-linux.so
#2  0x0000000004a0af2a in _vgw00000ZZ_libpthreadZdsoZd0_pthreadZujoin () from /usr/lib64/valgrind/vgpreload_helgrind-amd64-linux.so
#3  0x0000000004c27054 in ldap_pvt_thread_join (thread=231708416, thread_return=0x0) at thr_posix.c:197
#4  0x0000000000441bb4 in slapd_daemon () at daemon.c:2907
#5  0x000000000041b28a in main (argc=10, argv=0x7ff000228) at main.c:1013

Thread 4 (LWP 26328):
#0  0x0000003092ef63f3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:81
#1  0x00000000004406b4 in slapd_daemon_task (ptr=0x5614300) at daemon.c:2514
#2  0x0000000004a0a246 in mythread_wrapper () from /usr/lib64/valgrind/vgpreload_helgrind-amd64-linux.so
#3  0x0000003093607c53 in start_thread (arg=0xdcf9700) at pthread_create.c:308
#4  0x0000003092ef5e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 3 (LWP 26331):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000000004a0a3f3 in pthread_cond_wait_WRK () from /usr/lib64/valgrind/vgpreload_helgrind-amd64-linux.so
#2  0x0000000004a0b9bd in _vgw00000ZZ_libpthreadZdsoZd0_pthreadZucondZuwaitZAZa () from /usr/lib64/valgrind/vgpreload_helgrind-amd64-linux.so
#3  0x0000000004c27113 in ldap_pvt_thread_cond_wait (cond=0x532eaf8, mutex=0x532ead0) at thr_posix.c:277
#4  0x0000000004c2593d in ldap_int_thread_pool_wrapper (xpool=0x532eac0) at tpool.c:927
#5  0x0000000004a0a246 in mythread_wrapper () from /usr/lib64/valgrind/vgpreload_helgrind-amd64-linux.so
#6  0x0000003093607c53 in start_thread (arg=0xe4fa700) at pthread_create.c:308
#7  0x0000003092ef5e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 2 (LWP 26334):
#0  0x00000000004c121a in slap_sl_free (ptr=0xf4fd170, ctx=0x5645280) at sl_malloc.c:513
#1  0x0000000000449520 in do_search (op=0x5616a50, rs=0xecfaa60) at search.c:257
#2  0x00000000004451d4 in connection_operation (ctx=0xecfab40, arg_v=0x5616a50) at connection.c:1134
#3  0x0000000004c25a12 in ldap_int_thread_pool_wrapper (xpool=0x532eac0) at tpool.c:945
#4  0x0000000004a0a246 in mythread_wrapper () from /usr/lib64/valgrind/vgpreload_helgrind-amd64-linux.so
#5  0x0000003093607c53 in start_thread (arg=0xecfb700) at pthread_create.c:308
#6  0x0000003092ef5e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (LWP 26335):
#0  0x0000003092ee76cd in write () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000003092e76d83 in _IO_new_file_write (f=0x30931bb1e0 <_IO_2_1_stderr_>, data=0xf4fa960, n=63) at fileops.c:1254
#2  0x0000003092e7751f in new_do_write (to_do=63, data=0xf4fa960 "52735591 connection_closing: readying conn=1006 sd=9 for close\n", fp=0x30931bb1e0 <_IO_2_1_stderr_>) at fileops.c:530
#3  _IO_new_file_xsputn (f=0x30931bb1e0 <_IO_2_1_stderr_>, data=<optimized out>, n=63) at fileops.c:1338
#4  0x0000003092e6c76d in __GI__IO_fputs (str=0xf4fa960 "52735591 connection_closing: readying conn=1006 sd=9 for close\n", fp=0x30931bb1e0 <_IO_2_1_stderr_>) at iofputs.c:41
#5  0x0000000004e8b828 in lutil_debug (debug=-1, level=8, fmt=0x589aa0 "connection_closing: readying conn=%lu sd=%d for close\n") at debug.c:73
#6  0x0000000000444399 in connection_closing (c=0x5418d68, why=0x0) at connection.c:788
#7  0x00000000004454a1 in connection_operation (ctx=0xf4fbb40, arg_v=0x5648570) at connection.c:1184
#8  0x0000000004c25a12 in ldap_int_thread_pool_wrapper (xpool=0x532eac0) at tpool.c:945
#9  0x0000000004a0a246 in mythread_wrapper () from /usr/lib64/valgrind/vgpreload_helgrind-amd64-linux.so
#10 0x0000003093607c53 in start_thread (arg=0xf4fc700) at pthread_create.c:308
#11 0x0000003092ef5e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113