Comment 45 for bug 1567540

It's not solid, but I've seen three of these so far.
It crashes ballpark of 1 in 5 tries.

FreeBSD 10.1-RELEASE amd64

I haven't seen any troubles like this before 4.3.33
It crashes before it writes anything to the post-switching log file.

May 14 01:32:20 ted3 ntpd[79529]: switching logging to file /var/log/ntp/ntpd.lo
g
May 14 01:32:20 ted3 kernel: pid 79529 (ntpd), uid 0: exited on signal 11 (core
dumped)

Core was generated by `ntpd'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /lib/libgcc_s.so.1...done.
Loaded symbols for /lib/libgcc_s.so.1
Reading symbols from /lib/libmd.so.6...done.
Loaded symbols for /lib/libmd.so.6
Reading symbols from /lib/libm.so.5...done.
Loaded symbols for /lib/libm.so.5
Reading symbols from /lib/libthr.so.3...done.
Loaded symbols for /lib/libthr.so.3
Reading symbols from /lib/libc.so.7...done.
Loaded symbols for /lib/libc.so.7
Reading symbols from /libexec/ld-elf.so.1...done.
Loaded symbols for /libexec/ld-elf.so.1
#0 0x000000080119db43 in sbrk () from /lib/libc.so.7
[New Thread 801c06c00 (LWP 100287/ntpd)]
[New Thread 801c06400 (LWP 100169/ntpd)]
(gdb) bt
#0 0x000000080119db43 in sbrk () from /lib/libc.so.7
#1 0x0000000801199aaf in sbrk () from /lib/libc.so.7
#2 0x0000000801184593 in syscall () from /lib/libc.so.7
#3 0x00000008011a5283 in realloc () from /lib/libc.so.7
#4 0x0000000000437285 in ereallocz (ptr=0x80180a140, newsz=32, priorsz=0,
    zero_init=1) at ../../libntp/emalloc.c:43
#5 0x00000000004399c7 in get_worker_context (c=0x801c42100, idx=0)
    at ../../libntp/ntp_intres.c:982
#6 0x0000000000439665 in blocking_getaddrinfo (c=0x801c42100, req=0x801c1b0c0)
    at ../../libntp/ntp_intres.c:327
#7 0x000000000043a5d0 in blocking_child_common (c=<value optimized out>)
    at ../../libntp/ntp_worker.c:288
#8 0x000000000043c619 in blocking_thread (ThreadArg=0x80180a140)
    at ../../libntp/work_thread.c:663
#9 0x0000000800ed74f5 in pthread_create () from /lib/libthr.so.3
#10 0x0000000000000000 in ?? ()
(gdb)