unexpected error from pymonetdb
Server closed connection
query started on line 339 of file sqlancer17.test
query text:
SELECT json.tojsonarray('<') FROM t1, t2 GROUP BY t1.c0

Server may have crashed
[Errno 32] Broken pipe
query started on line 344 of file sqlancer17.test
query text:
ROLLBACK


Segmentation fault
           PID: 1206770 (mserver5)
           UID: 9375 (monet)
           GID: 60020 (da)
        Signal: 11 (SEGV)
     Timestamp: Tue 2021-09-14 23:05:39 CEST (10s ago)
  Command Line: mserver5 --debug=0 --set gdk_nr_threads 0 --set mapi_listenaddr all --set mapi_port 0 --set mapi_usock /tmp/mtest-1195545/.s.monetdb.${PORT} --forcemito --dbpath=/export/scratch1/home/monet/testing/ce904debefe6-4-1-5/tests/sql/dbfarm/mTests_sql_test_SQLancer --set gdk_vm_maxsize 8589934592 --loadmodule udf
    Executable: /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/bin/mserver5
 Control Group: /user.slice/user-9375.slice/session-80.scope
          Unit: session-80.scope
         Slice: user-9375.slice
       Session: 80
     Owner UID: 9375 (monet)
       Boot ID: aec8033bdb4f44519c4c54fe049a4cd5
    Machine ID: 0d753a0a0a7c42c0991b02bbc9ec0291
      Hostname: lab05.da.cwi.nl
       Storage: /var/lib/systemd/coredump/core.mserver5.9375.aec8033bdb4f44519c4c54fe049a4cd5.1206770.1631653539000000.lz4
       Message: Process 1206770 (mserver5) of user 9375 dumped core.

[New LWP 1206783]
[New LWP 1206773]
[New LWP 1206777]
[New LWP 1206779]
[New LWP 1206772]
[New LWP 1206770]
[New LWP 1206771]
[New LWP 1206780]
[New LWP 1207412]
[New LWP 1206784]
[New LWP 1206778]
[New LWP 1206776]
[New LWP 1206781]
[New LWP 1206782]
[New LWP 1206788]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `mserver5 --debug=0 --set gdk_nr_threads 0 --set mapi_listenaddr all --set mapi_'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007f97a2d50f7e in __strncpy_avx2 () from /lib64/libc.so.6
[Current thread is 1 (Thread 0x7f974ffff640 (LWP 1206783))]

Thread 15 (Thread 0x7f9724924640 (LWP 1206788)):
#0  0x00007f97a2cb5451 in clock_nanosleep@GLIBC_2.2.5 () from /lib64/libc.so.6
No symbol table info available.
#1  0x00007f97a2cba997 in nanosleep () from /lib64/libc.so.6
No symbol table info available.
#2  0x00007f97a31a4d7f in MT_sleep_ms () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#3  0x00007f97a1452a7d in store_manager () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdbsql.so.11
No symbol table info available.
#4  0x00007f97a3164c6a in THRstarter () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#5  0x00007f97a31a2529 in thread_starter () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#6  0x00007f97a2dc13f9 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#7  0x00007f97a2cee4c3 in clone () from /lib64/libc.so.6
No symbol table info available.

Thread 14 (Thread 0x7f9754384640 (LWP 1206782)):
#0  0x00007f97a2dca0d4 in do_futex_wait.constprop () from /lib64/libpthread.so.0
No symbol table info available.
#1  0x00007f97a2dca1d8 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
No symbol table info available.
#2  0x00007f97a3536e50 in DFLOWworker () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#3  0x00007f97a3164c6a in THRstarter () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#4  0x00007f97a31a2529 in thread_starter () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#5  0x00007f97a2dc13f9 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#6  0x00007f97a2cee4c3 in clone () from /lib64/libc.so.6
No symbol table info available.

Thread 13 (Thread 0x7f9754585640 (LWP 1206781)):
#0  0x00007f97a2dca0d4 in do_futex_wait.constprop () from /lib64/libpthread.so.0
No symbol table info available.
#1  0x00007f97a2dca1d8 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
No symbol table info available.
#2  0x00007f97a35365d8 in q_dequeue () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#3  0x00007f97a3536941 in DFLOWworker () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#4  0x00007f97a3164c6a in THRstarter () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#5  0x00007f97a31a2529 in thread_starter () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#6  0x00007f97a2dc13f9 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#7  0x00007f97a2cee4c3 in clone () from /lib64/libc.so.6
No symbol table info available.

Thread 12 (Thread 0x7f9754f8a640 (LWP 1206776)):
#0  0x00007f97a2dca0d4 in do_futex_wait.constprop () from /lib64/libpthread.so.0
No symbol table info available.
#1  0x00007f97a2dca1d8 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
No symbol table info available.
#2  0x00007f97a35365d8 in q_dequeue () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#3  0x00007f97a3536941 in DFLOWworker () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#4  0x00007f97a3164c6a in THRstarter () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#5  0x00007f97a31a2529 in thread_starter () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#6  0x00007f97a2dc13f9 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#7  0x00007f97a2cee4c3 in clone () from /lib64/libc.so.6
No symbol table info available.

Thread 11 (Thread 0x7f9754b88640 (LWP 1206778)):
#0  0x00007f97a2dca0d4 in do_futex_wait.constprop () from /lib64/libpthread.so.0
No symbol table info available.
#1  0x00007f97a2dca1d8 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
No symbol table info available.
#2  0x00007f97a35365d8 in q_dequeue () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#3  0x00007f97a3536941 in DFLOWworker () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#4  0x00007f97a3164c6a in THRstarter () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#5  0x00007f97a31a2529 in thread_starter () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#6  0x00007f97a2dc13f9 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#7  0x00007f97a2cee4c3 in clone () from /lib64/libc.so.6
No symbol table info available.

Thread 10 (Thread 0x7f974fdfe640 (LWP 1206784)):
#0  0x00007f97a2dca0d4 in do_futex_wait.constprop () from /lib64/libpthread.so.0
No symbol table info available.
#1  0x00007f97a2dca1d8 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
No symbol table info available.
#2  0x00007f97a35365d8 in q_dequeue () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#3  0x00007f97a3536941 in DFLOWworker () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#4  0x00007f97a3164c6a in THRstarter () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#5  0x00007f97a31a2529 in thread_starter () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#6  0x00007f97a2dc13f9 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#7  0x00007f97a2cee4c3 in clone () from /lib64/libc.so.6
No symbol table info available.

Thread 9 (Thread 0x7f974fbfd640 (LWP 1207412)):
#0  0x00007f97a2dca0d4 in do_futex_wait.constprop () from /lib64/libpthread.so.0
No symbol table info available.
#1  0x00007f97a2dca1d8 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
No symbol table info available.
#2  0x00007f97a35365d8 in q_dequeue () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#3  0x00007f97a353794d in runMALdataflow () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#4  0x00007f97a353435b in runMALsequence () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#5  0x00007f97a3535e1d in runMAL () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#6  0x00007f97a13ab9a0 in SQLrun () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdbsql.so.11
No symbol table info available.
#7  0x00007f97a13ace73 in SQLengineIntern () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdbsql.so.11
No symbol table info available.
#8  0x00007f97a354801e in runScenario () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#9  0x00007f97a3548702 in MSserveClient () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#10 0x00007f97a3548e2f in MSscheduleClient () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#11 0x00007f97a35d4fae in doChallenge () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#12 0x00007f97a3164c6a in THRstarter () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#13 0x00007f97a31a2529 in thread_starter () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#14 0x00007f97a2dc13f9 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#15 0x00007f97a2cee4c3 in clone () from /lib64/libc.so.6
No symbol table info available.

Thread 8 (Thread 0x7f9754786640 (LWP 1206780)):
#0  0x00007f97a2dca0d4 in do_futex_wait.constprop () from /lib64/libpthread.so.0
No symbol table info available.
#1  0x00007f97a2dca1d8 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
No symbol table info available.
#2  0x00007f97a35365d8 in q_dequeue () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#3  0x00007f97a3536941 in DFLOWworker () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#4  0x00007f97a3164c6a in THRstarter () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#5  0x00007f97a31a2529 in thread_starter () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#6  0x00007f97a2dc13f9 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#7  0x00007f97a2cee4c3 in clone () from /lib64/libc.so.6
No symbol table info available.

Thread 7 (Thread 0x7f97a1a9c640 (LWP 1206771)):
#0  0x00007f97a2cb5451 in clock_nanosleep@GLIBC_2.2.5 () from /lib64/libc.so.6
No symbol table info available.
#1  0x00007f97a2cba997 in nanosleep () from /lib64/libc.so.6
No symbol table info available.
#2  0x00007f97a31a4d7f in MT_sleep_ms () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#3  0x00007f97a315bdaa in BBPmanager () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#4  0x00007f97a3164c6a in THRstarter () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#5  0x00007f97a31a2529 in thread_starter () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#6  0x00007f97a2dc13f9 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#7  0x00007f97a2cee4c3 in clone () from /lib64/libc.so.6
No symbol table info available.

Thread 6 (Thread 0x7f97a1c938c0 (LWP 1206770)):
#0  0x00007f97a2cb5451 in clock_nanosleep@GLIBC_2.2.5 () from /lib64/libc.so.6
No symbol table info available.
#1  0x00007f97a2cba997 in nanosleep () from /lib64/libc.so.6
No symbol table info available.
#2  0x00007f97a31a4d7f in MT_sleep_ms () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#3  0x0000000000403717 in main ()
No symbol table info available.

Thread 5 (Thread 0x7f97a189b640 (LWP 1206772)):
#0  0x00007f97a2cb5451 in clock_nanosleep@GLIBC_2.2.5 () from /lib64/libc.so.6
No symbol table info available.
#1  0x00007f97a2cba997 in nanosleep () from /lib64/libc.so.6
No symbol table info available.
#2  0x00007f97a31a4d7f in MT_sleep_ms () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#3  0x00007f97a3544d13 in profilerHeartbeat () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#4  0x00007f97a31a2529 in thread_starter () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#5  0x00007f97a2dc13f9 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#6  0x00007f97a2cee4c3 in clone () from /lib64/libc.so.6
No symbol table info available.

Thread 4 (Thread 0x7f9754987640 (LWP 1206779)):
#0  0x00007f97a2dca0d4 in do_futex_wait.constprop () from /lib64/libpthread.so.0
No symbol table info available.
#1  0x00007f97a2dca1d8 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
No symbol table info available.
#2  0x00007f97a35365d8 in q_dequeue () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#3  0x00007f97a3536941 in DFLOWworker () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#4  0x00007f97a3164c6a in THRstarter () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#5  0x00007f97a31a2529 in thread_starter () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#6  0x00007f97a2dc13f9 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#7  0x00007f97a2cee4c3 in clone () from /lib64/libc.so.6
No symbol table info available.

Thread 3 (Thread 0x7f9754d89640 (LWP 1206777)):
#0  0x00007f97a2dca0d4 in do_futex_wait.constprop () from /lib64/libpthread.so.0
No symbol table info available.
#1  0x00007f97a2dca1d8 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
No symbol table info available.
#2  0x00007f97a35365d8 in q_dequeue () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#3  0x00007f97a3536941 in DFLOWworker () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#4  0x00007f97a3164c6a in THRstarter () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#5  0x00007f97a31a2529 in thread_starter () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#6  0x00007f97a2dc13f9 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#7  0x00007f97a2cee4c3 in clone () from /lib64/libc.so.6
No symbol table info available.

Thread 2 (Thread 0x7f975518b640 (LWP 1206773)):
#0  0x00007f97a2ce33ff in poll () from /lib64/libc.so.6
No symbol table info available.
#1  0x00007f97a35d591b in SERVERlistenThread () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#2  0x00007f97a31a2529 in thread_starter () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#3  0x00007f97a2dc13f9 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#4  0x00007f97a2cee4c3 in clone () from /lib64/libc.so.6
No symbol table info available.

Thread 1 (Thread 0x7f974ffff640 (LWP 1206783)):
#0  0x00007f97a2d50f7e in __strncpy_avx2 () from /lib64/libc.so.6
No symbol table info available.
#1  0x00007f97a3561c15 in JSONjsonaggr () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#2  0x00007f97a356260f in JSONsubjsoncand () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#3  0x00007f97a35343ff in runMALsequence () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#4  0x00007f97a35368c0 in DFLOWworker () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libmonetdb5.so.31
No symbol table info available.
#5  0x00007f97a3164c6a in THRstarter () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#6  0x00007f97a31a2529 in thread_starter () from /export/scratch1/home/monet/testing/ce904debefe6-4-1-5/install/lib64/libbat.so.23
No symbol table info available.
#7  0x00007f97a2dc13f9 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#8  0x00007f97a2cee4c3 in clone () from /lib64/libc.so.6
No symbol table info available.