Comment 6 for bug 1469214

This one looks a problem of systemd-timesyncd, from pmap log[1],
both the PC and faulted address aren't valid, which drop in heap area,
but the faulted address(0x7fa8ea6008) shouldn't have been allocated
and is far away from the start address(0x7f9eb27000) of hear area.

[1] pmap log

ubuntu@ms10-37-mcdivittB0:~$ ps -ax | grep systemd-timesyncd
  412 ? Ssl 0:00 /lib/systemd/systemd-timesyncd
18058 pts/2 S+ 0:00 grep --color=auto systemd-timesyncd
ubuntu@ms10-37-mcdivittB0:~$ sudo pmap 412 | tail -n 10
0000007f82730000 108K r-x-- systemd-timesyncd
0000007f8274e000 16K rw--- [ anon ]
0000007f82757000 8K rw--- [ anon ]
0000007f82759000 4K r---- [ anon ]
0000007f8275a000 4K r-x-- [ anon ]
0000007f8275b000 4K r---- systemd-timesyncd
0000007f8275c000 4K rw--- systemd-timesyncd
0000007f9eb27000 132K rw--- [ anon ]
0000007fd5e13000 132K rw--- [ stack ]
 total 77176K
ubuntu@ms10-37-mcdivittB0:~$ sudo pmap 412
412: /lib/systemd/systemd-timesyncd
0000007f7c000000 132K rw--- [ anon ]
0000007f7c021000 65404K ----- [ anon ]
0000007f81c29000 16K r-x-- libnss_dns-2.21.so
0000007f81c2d000 64K ----- libnss_dns-2.21.so
0000007f81c3d000 4K r---- libnss_dns-2.21.so
0000007f81c3e000 4K rw--- libnss_dns-2.21.so
0000007f81c3f000 4K ----- [ anon ]
0000007f81c40000 8188K rw--- [ anon ]
0000007f8243f000 40K r-x-- libnss_files-2.21.so
0000007f82449000 60K ----- libnss_files-2.21.so
0000007f82458000 4K r---- libnss_files-2.21.so
0000007f82459000 4K rw--- libnss_files-2.21.so
0000007f8245a000 36K r-x-- libnss_nis-2.21.so
0000007f82463000 60K ----- libnss_nis-2.21.so
0000007f82472000 4K r---- libnss_nis-2.21.so
0000007f82473000 4K rw--- libnss_nis-2.21.so
0000007f82474000 72K r-x-- libnsl-2.21.so
0000007f82486000 60K ----- libnsl-2.21.so
0000007f82495000 4K r---- libnsl-2.21.so
0000007f82496000 4K rw--- libnsl-2.21.so
0000007f82497000 8K rw--- [ anon ]
0000007f82499000 24K r-x-- libnss_compat-2.21.so
0000007f8249f000 64K ----- libnss_compat-2.21.so
0000007f824af000 4K r---- libnss_compat-2.21.so
0000007f824b0000 4K rw--- libnss_compat-2.21.so
0000007f824b1000 580K r-x-- libm-2.21.so
0000007f82542000 60K ----- libm-2.21.so
0000007f82551000 4K r---- libm-2.21.so
0000007f82552000 4K rw--- libm-2.21.so
0000007f82553000 16K r-x-- libcap.so.2.24
0000007f82557000 60K ----- libcap.so.2.24
0000007f82566000 4K r---- libcap.so.2.24
0000007f82567000 4K rw--- libcap.so.2.24
0000007f82568000 68K r-x-- libresolv-2.21.so
0000007f82579000 64K ----- libresolv-2.21.so
0000007f82589000 4K r---- libresolv-2.21.so
0000007f8258a000 4K rw--- libresolv-2.21.so
0000007f8258b000 8K rw--- [ anon ]
0000007f8258d000 1216K r-x-- libc-2.21.so
0000007f826bd000 60K ----- libc-2.21.so
0000007f826cc000 16K r---- libc-2.21.so
0000007f826d0000 8K rw--- libc-2.21.so
0000007f826d2000 16K rw--- [ anon ]
0000007f826d6000 88K r-x-- libpthread-2.21.so
0000007f826ec000 60K ----- libpthread-2.21.so
0000007f826fb000 4K r---- libpthread-2.21.so
0000007f826fc000 4K rw--- libpthread-2.21.so
0000007f826fd000 16K rw--- [ anon ]
0000007f82701000 112K r-x-- ld-2.21.so
0000007f8272d000 4K r---- ld-2.21.so
0000007f8272e000 8K rw--- ld-2.21.so
0000007f82730000 108K r-x-- systemd-timesyncd
0000007f8274e000 16K rw--- [ anon ]
0000007f82757000 8K rw--- [ anon ]
0000007f82759000 4K r---- [ anon ]
0000007f8275a000 4K r-x-- [ anon ]
0000007f8275b000 4K r---- systemd-timesyncd
0000007f8275c000 4K rw--- systemd-timesyncd
0000007f9eb27000 132K rw--- [ anon ]
0000007fd5e13000 132K rw--- [ stack ]
 total 77176K