Already logging to debuglog.txt.
#0  0x00007f7403de1848 in poll () from /lib/libc.so.6
#1  0x00007f7405b79054 in WaitLatchOrSocket (latch=<optimized out>, wakeEvents=<optimized out>, sock=<optimized out>, timeout=<optimized out>) at pg_latch.c:325
#2  0x00007f7405b7dd2e in BackgroundWriterMain () at /tmp/buildd/postgresql-9.4-9.4.4/build/../src/backend/postmaster/bgwriter.c:378
#3  0x00007f7405a1f59f in AuxiliaryProcessMain (argc=<optimized out>, argv=0x7ffff1c22830) at /tmp/buildd/postgresql-9.4-9.4.4/build/../src/backend/bootstrap/bootstrap.c:427
#4  0x00007f7405b86f3b in StartChildProcess (type=BgWriterProcess) at /tmp/buildd/postgresql-9.4-9.4.4/build/../src/backend/postmaster/postmaster.c:5155
#5  0x00007f7405b89582 in reaper (postgres_signal_arg=<optimized out>) at /tmp/buildd/postgresql-9.4-9.4.4/build/../src/backend/postmaster/postmaster.c:2642
#6  <signal handler called>
#7  0x00007f7403de6033 in select () from /lib/libc.so.6
#8  0x00007f7405b8b6e8 in ServerLoop () at /tmp/buildd/postgresql-9.4-9.4.4/build/../src/backend/postmaster/postmaster.c:1561
#9  PostmasterMain (argc=0, argv=<optimized out>) at /tmp/buildd/postgresql-9.4-9.4.4/build/../src/backend/postmaster/postmaster.c:1244
#10 0x00007f7405b1e474 in main (argc=5, argv=0x7f7407809910) at /tmp/buildd/postgresql-9.4-9.4.4/build/../src/backend/main/main.c:228
#0  0x00007f7403de1848 in poll () from /lib/libc.so.6
#1  0x00007f7405b79054 in WaitLatchOrSocket (latch=<optimized out>, wakeEvents=<optimized out>, sock=<optimized out>, timeout=<optimized out>) at pg_latch.c:325
#2  0x00007f7405b7dd2e in BackgroundWriterMain () at /tmp/buildd/postgresql-9.4-9.4.4/build/../src/backend/postmaster/bgwriter.c:378
#3  0x00007f7405a1f59f in AuxiliaryProcessMain (argc=<optimized out>, argv=0x7ffff1c22830) at /tmp/buildd/postgresql-9.4-9.4.4/build/../src/backend/bootstrap/bootstrap.c:427
#4  0x00007f7405b86f3b in StartChildProcess (type=BgWriterProcess) at /tmp/buildd/postgresql-9.4-9.4.4/build/../src/backend/postmaster/postmaster.c:5155
#5  0x00007f7405b89582 in reaper (postgres_signal_arg=<optimized out>) at /tmp/buildd/postgresql-9.4-9.4.4/build/../src/backend/postmaster/postmaster.c:2642
#6  <signal handler called>
#7  0x00007f7403de6033 in select () from /lib/libc.so.6
#8  0x00007f7405b8b6e8 in ServerLoop () at /tmp/buildd/postgresql-9.4-9.4.4/build/../src/backend/postmaster/postmaster.c:1561
#9  PostmasterMain (argc=0, argv=<optimized out>) at /tmp/buildd/postgresql-9.4-9.4.4/build/../src/backend/postmaster/postmaster.c:1244
#10 0x00007f7405b1e474 in main (argc=5, argv=0x7f7407809910) at /tmp/buildd/postgresql-9.4-9.4.4/build/../src/backend/main/main.c:228
Continuing.

Program received signal SIGINT, Interrupt.
0x00007f7403de1848 in poll () from /lib/libc.so.6
#0  0x00007f7403de1848 in poll () from /lib/libc.so.6
#1  0x00007f7405b79054 in WaitLatchOrSocket (latch=<optimized out>, wakeEvents=<optimized out>, sock=<optimized out>, timeout=<optimized out>) at pg_latch.c:325
#2  0x00007f7405b7dd2e in BackgroundWriterMain () at /tmp/buildd/postgresql-9.4-9.4.4/build/../src/backend/postmaster/bgwriter.c:378
#3  0x00007f7405a1f59f in AuxiliaryProcessMain (argc=<optimized out>, argv=0x7ffff1c22830) at /tmp/buildd/postgresql-9.4-9.4.4/build/../src/backend/bootstrap/bootstrap.c:427
#4  0x00007f7405b86f3b in StartChildProcess (type=BgWriterProcess) at /tmp/buildd/postgresql-9.4-9.4.4/build/../src/backend/postmaster/postmaster.c:5155
#5  0x00007f7405b89582 in reaper (postgres_signal_arg=<optimized out>) at /tmp/buildd/postgresql-9.4-9.4.4/build/../src/backend/postmaster/postmaster.c:2642
#6  <signal handler called>
#7  0x00007f7403de6033 in select () from /lib/libc.so.6
#8  0x00007f7405b8b6e8 in ServerLoop () at /tmp/buildd/postgresql-9.4-9.4.4/build/../src/backend/postmaster/postmaster.c:1561
#9  PostmasterMain (argc=0, argv=<optimized out>) at /tmp/buildd/postgresql-9.4-9.4.4/build/../src/backend/postmaster/postmaster.c:1244
#10 0x00007f7405b1e474 in main (argc=5, argv=0x7f7407809910) at /tmp/buildd/postgresql-9.4-9.4.4/build/../src/backend/main/main.c:228
Detaching from program: /usr/lib/postgresql/9.4/bin/postgres, process 5322
