MariaDB crashes - [ERROR] mysqld got signal 11

160803 17:02:37 [ERROR] mysqld got signal 11 ;

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-bugs

We 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: 10.0.26-MariaDB-wsrep

key_buffer_size=16777216

read_buffer_size=262144

max_used_connections=261

max_threads=1026

thread_count=97

It is possible that mysqld could use up to 

key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 825068 K  bytes of memory

Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x0x0

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...

stack_bottom = 0x0 thread_stack 0x48000

/usr/sbin/mysqld(my_print_stacktrace+0x49)[0x7f95fe6f4599]

/usr/sbin/mysqld(handle_fatal_signal+0x329)[0x7f95fe18a5f9]

/lib64/libpthread.so.0(+0x11880)[0x7f95fcf1d880]

/lib64/libc.so.6(+0x987c0)[0x7f95fbaaa7c0]

/usr/lib64/libcrypto.so.1.0.0(+0x125565)[0x7f95fc930565]

/usr/lib64/libcrypto.so.1.0.0(BIO_write+0x8f)[0x7f95fc92687f]

/usr/lib64/libssl.so.1.0.0(ssl3_write_pending+0x91)[0x7f95fccbe1f1]

/usr/lib64/libssl.so.1.0.0(ssl3_write_bytes+0xe5)[0x7f95fccbe965]

/usr/lib/galera/libgalera_smm.so(_ZN4asio3ssl6detail5io_opINS_19basic_stream_socketINS_2ip3tcpENS_21stream_socket_serviceIS5_EEEENS1_8write_opIN5boost5arrayINS_12const_bufferELm2EEEEENS_6detail8write_opINS0_6streamIS8_EESD_NSF_14transfer_all_tENSA_3_bi6bind_tIvNSA_4_mfi3mf2IvN5gcomm13AsioTcpSocketERKNS_10error_codeEmEENSK_5list3INSK_5valueINSA_10shared_ptrISP_EEEEPFNSA_3argILi1EEEvEPFNSZ_ILi2EEEvEEEEEEEEclESQ_mi+0x20e)[0x7f95faee5c2e]

/usr/lib/galera/libgalera_smm.so(_ZN4asio6detail8write_opINS_3ssl6streamINS_19basic_stream_socketINS_2ip3tcpENS_21stream_socket_serviceIS6_EEEEEEN5boost5arrayINS_12const_bufferELm2EEENS0_14transfer_all_tENSB_3_bi6bind_tIvNSB_4_mfi3mf2IvN5gcomm13AsioTcpSocketERKNS_10error_codeEmEENSG_5list3INSG_5valueINSB_10shared_ptrISL_EEEEPFNSB_3argILi1EEEvEPFNSV_ILi2EEEvEEEEEEclESO_mi+0x212)[0x7f95faee6242]

/usr/lib/galera/libgalera_smm.so(_ZN5gcomm13AsioTcpSocket9write_oneERKN5boost5arrayIN4asio12const_bufferELm2EEE+0x14c)[0x7f95faecc5ec]

/usr/lib/galera/libgalera_smm.so(_ZN5gcomm13AsioTcpSocket4sendERKNS_8DatagramE+0x2e0)[0x7f95faecd5e0]

/usr/lib/galera/libgalera_smm.so(_Z4sendPN5gcomm6SocketERNS_8DatagramE+0x38)[0x7f95fae82548]

/usr/lib/galera/libgalera_smm.so(_ZN5gcomm6GMCast11handle_downERNS_8DatagramERKNS_13ProtoDownMetaE+0x2f3)[0x7f95fae835a3]

/usr/lib/galera/libgalera_smm.so(_ZN5gcomm8Protolay9send_downERNS_8DatagramERKNS_13ProtoDownMetaE+0x6c)[0x7f95fae7fcdc]

/usr/lib/galera/libgalera_smm.so(_ZN5gcomm3evs5Proto8send_gapERKNS0_6CallerERKNS_4UUIDERKNS_6ViewIdENS0_5RangeEbb+0x65d)[0x7f95fae6b23d]

/usr/lib/galera/libgalera_smm.so(_ZN5gcomm3evs5Proto11handle_userERKNS0_11UserMessageESt17_Rb_tree_iteratorISt4pairIKNS_4UUIDENS0_4NodeEEERKNS_8DatagramE+0xd65)[0x7f95fae700e5]

/usr/lib/galera/libgalera_smm.so(_ZN5gcomm3evs5Proto10handle_msgERKNS0_7MessageERKNS_8DatagramEb+0x6ca)[0x7f95fae7347a]

/usr/lib/galera/libgalera_smm.so(_ZN5gcomm3evs5Proto9handle_upEPKvRKNS_8DatagramERKNS_11ProtoUpMetaE+0x4a4)[0x7f95fae74084]

/usr/lib/galera/libgalera_smm.so(_ZN5gcomm6GMCast9handle_upEPKvRKNS_8DatagramERKNS_11ProtoUpMetaE+0x329)[0x7f95fae8f399]

/usr/lib/galera/libgalera_smm.so(_ZN5gcomm10Protostack8dispatchEPKvRKNS_8DatagramERKNS_11ProtoUpMetaE+0x6e)[0x7f95faebc62e]

/usr/lib/galera/libgalera_smm.so(_ZN5gcomm12AsioProtonet8dispatchERKPKvRKNS_8DatagramERKNS_11ProtoUpMetaE+0x6f)[0x7f95faeef3df]

/usr/lib/galera/libgalera_smm.so(_ZN5gcomm13AsioTcpSocket12read_handlerERKN4asio10error_codeEm+0x612)[0x7f95faecbeb2]

/usr/lib/galera/libgalera_smm.so(_ZN4asio6detail7read_opINS_3ssl6streamINS_19basic_stream_socketINS_2ip3tcpENS_21stream_socket_serviceIS6_EEEEEEN5boost5arrayINS_14mutable_bufferELm1EEENSB_3_bi6bind_tImNSB_4_mfi3mf2ImN5gcomm13AsioTcpSocketERKNS_10error_codeEmEENSF_5list3INSF_5valueINSB_10shared_ptrISK_EEEEPFNSB_3argILi1EEEvEPFNSU_ILi2EEEvEEEEENSG_IvNSI_IvSK_SN_mEES11_EEEclESN_mi+0x4b1)[0x7f95faee45c1]

/usr/lib/galera/libgalera_smm.so(_ZN4asio3ssl6detail5io_opINS_19basic_stream_socketINS_2ip3tcpENS_21stream_socket_serviceIS5_EEEENS1_7read_opINS_6detail17consuming_buffersINS_14mutable_bufferEN5boost5arrayISC_Lm1EEEEEEENSA_7read_opINS0_6streamIS8_EESF_NSD_3_bi6bind_tImNSD_4_mfi3mf2ImN5gcomm13AsioTcpSocketERKNS_10error_codeEmEENSL_5list3INSL_5valueINSD_10shared_ptrISQ_EEEEPFNSD_3argILi1EEEvEPFNS10_ILi2EEEvEEEEENSM_IvNSO_IvSQ_ST_mEES17_EEEEEclESR_mi+0xbc)[0x7f95faee36cc]

/usr/lib/galera/libgalera_smm.so(_ZN4asio6detail23reactive_socket_recv_opINS_17mutable_buffers_1ENS_3ssl6detail5io_opINS_19basic_stream_socketINS_2ip3tcpENS_21stream_socket_serviceIS8_EEEENS4_7read_opINS0_17consuming_buffersINS_14mutable_bufferEN5boost5arrayISE_Lm1EEEEEEENS0_7read_opINS3_6streamISB_EESH_NSF_3_bi6bind_tImNSF_4_mfi3mf2ImN5gcomm13AsioTcpSocketERKNS_10error_codeEmEENSN_5list3INSN_5valueINSF_10shared_ptrISS_EEEEPFNSF_3argILi1EEEvEPFNS12_ILi2EEEvEEEEENSO_IvNSQ_IvSS_SV_mEES19_EEEEEEE11do_completeEPNS0_15task_io_serviceEPNS0_25task_io_service_operationESV_m+0xd2)[0x7f95faee4812]

/usr/lib/galera/libgalera_smm.so(_ZN4asio6detail15task_io_service3runERNS_10error_codeE+0x453)[0x7f95faed5e13]

/usr/lib/galera/libgalera_smm.so(_ZN5gcomm12AsioProtonet10event_loopERKN2gu8datetime6PeriodE+0x25f)[0x7f95faef071f]

/usr/lib/galera/libgalera_smm.so(_ZN9GCommConn3runEv+0x76)[0x7f95faf06fd6]

/usr/lib/galera/libgalera_smm.so(_ZN9GCommConn6run_fnEPv+0x2b)[0x7f95faf0f9ab]

/lib64/libpthread.so.0(+0x764c)[0x7f95fcf1364c]

/lib64/libc.so.6(clone+0x6d)[0x7f95fbb0820d]

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.