mysqld got signal 6 ;
This could be because you hit a bug. It is also possible that this binary
or one of the libraries it was linked against is corrupt, improperly built,
or misconfigured. This error can also be caused by malfunctioning hardware.
To report this bug, see
https://mariadb.com/kb/en/reporting-bugsWe will try our best to scrape up some info that will hopefully help
diagnose the problem, but since we have already crashed,
something is definitely wrong and this may fail.
Server version: 10.1.17-MariaDB-1~jessie
key_buffer_size=536870912
read_buffer_size=2097152
max_used_connections=3
max_threads=602
thread_count=12
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 4235319 K bytes of memory
Hope that's ok; if not, decrease some variables in the equation.
Thread pointer: 0x0x7efb7334c008
Attempting backtrace. You can use the following information to find out
where mysqld died. If you see no messages after this, something went
terribly wrong...
/usr/sbin/mysqld(my_print_stacktrace+0x2e)[0x7f1a343aea2e]
/usr/sbin/mysqld(handle_fatal_signal+0x2d5)[0x7f1a33eea905]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x10eb0)[0x7f1a33515eb0]
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x38)[0x7f1a31592198]
/lib/x86_64-linux-gnu/libc.so.6(abort+0x16a)[0x7f1a3159361a]
/usr/sbin/mysqld(+0x7d6e74)[0x7f1a3411ee74]
/usr/sbin/mysqld(+0x7db5e3)[0x7f1a341235e3]
/usr/sbin/mysqld(+0x7dc6df)[0x7f1a341246df]
/usr/sbin/mysqld(+0x7bbf95)[0x7f1a34103f95]
/usr/sbin/mysqld(+0x709db3)[0x7f1a34051db3]
/usr/sbin/mysqld(_ZN7handler13ha_update_rowEPKhPh+0x44a)[0x7f1a33ef517a]
/usr/sbin/mysqld(_Z12mysql_updateP3THDP10TABLE_LISTR4ListI4ItemES6_PS4_jP8st_ordery15enum_duplicatesbPySB_+0x152c)[0x7f1a33e01a4c]
/usr/sbin/mysqld(_Z21mysql_execute_commandP3THD+0x34ba)[0x7f1a33d61f4a]
/usr/sbin/mysqld(_Z11mysql_parseP3THDPcjP12Parser_state+0x26e)[0x7f1a33d67d8e]
/usr/sbin/mysqld(+0x420589)[0x7f1a33d68589]
/usr/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcj+0x16ec)[0x7f1a33d6a1fc]
/usr/sbin/mysqld(_Z10do_commandP3THD+0x16e)[0x7f1a33d6ae3e]
/usr/sbin/mysqld(_Z24do_handle_one_connectionP3THD+0x182)[0x7f1a33e35312]
/usr/sbin/mysqld(handle_one_connection+0x40)[0x7f1a33e354d0]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x7444)[0x7f1a3350c444]
/lib/x86_64-linux-gnu/libc.so.6(clone+0x6d)[0x7f1a3164620d]
Connection ID (thread ID): 26
Status: NOT_KILLED
Optimizer switch: index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersec$
The manual page at
http://dev.mysql.com/doc/mysql/en/crashing.html contains
information that should help you find out what is causing the crash.
mariadb.service: main process exited, code=exited, status=1/FAILURE
Unit mariadb.service entered failed state.