2016-06-11T21:14:10.422154Z 0 [Note] mysqld (mysqld 5.7.12) starting as process 1 ... 2016-06-11T21:14:10.468098Z 0 [Warning] Setting lower_case_table_names=2 because file system for /var/lib/mysql/ is case insensitive 2016-06-11T21:14:10.474998Z 0 [Note] InnoDB: PUNCH HOLE support available 2016-06-11T21:14:10.475297Z 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins 2016-06-11T21:14:10.475634Z 0 [Note] InnoDB: Uses event mutexes 2016-06-11T21:14:10.476472Z 0 [Note] InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier 2016-06-11T21:14:10.476533Z 0 [Note] InnoDB: Compressed tables use zlib 1.2.8 2016-06-11T21:14:10.476551Z 0 [Note] InnoDB: Using Linux native AIO 2016-06-11T21:14:10.477614Z 0 [Note] InnoDB: Number of pools: 1 2016-06-11T21:14:10.479426Z 0 [Note] InnoDB: Using CPU crc32 instructions 2016-06-11T21:14:10.491568Z 0 [Note] InnoDB: Initializing buffer pool, total size = 128M, instances = 1, chunk size = 128M 2016-06-11T21:14:10.501832Z 0 [Note] InnoDB: Completed initialization of buffer pool 2016-06-11T21:14:10.505706Z 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority(). 2016-06-11T21:14:10.590905Z 0 [Note] InnoDB: Highest supported file format is Barracuda. 2016-06-11T21:14:10.600401Z 0 [Note] InnoDB: Log scan progressed past the checkpoint lsn 13029936071 2016-06-11T21:14:11.306575Z 0 [Note] InnoDB: Doing recovery: scanned up to log sequence number 13035178496 2016-06-11T21:14:12.032962Z 0 [Note] InnoDB: Doing recovery: scanned up to log sequence number 13040421376 2016-06-11T21:14:12.760732Z 0 [Note] InnoDB: Doing recovery: scanned up to log sequence number 13045664256 2016-06-11T21:14:13.482653Z 0 [Note] InnoDB: Doing recovery: scanned up to log sequence number 13050907136 2016-06-11T21:14:14.237196Z 0 [Note] InnoDB: Doing recovery: scanned up to log sequence number 13056150016 2016-06-11T21:14:15.034139Z 0 [Note] InnoDB: Doing recovery: scanned up to log sequence number 13031049728 2016-06-11T21:14:15.843836Z 0 [Note] InnoDB: Doing recovery: scanned up to log sequence number 13036292608 2016-06-11T21:14:16.496169Z 0 [Note] InnoDB: Doing recovery: scanned up to log sequence number 13041535488 2016-06-11T21:14:17.220730Z 0 [Note] InnoDB: Doing recovery: scanned up to log sequence number 13046778368 2016-06-11T21:14:18.028497Z 0 [Note] InnoDB: Doing recovery: scanned up to log sequence number 13052021248 2016-06-11T21:14:18.870063Z 0 [Note] InnoDB: Doing recovery: scanned up to log sequence number 13057264128 2016-06-11T21:14:19.695840Z 0 [Note] InnoDB: Doing recovery: scanned up to log sequence number 13062507008 2016-06-11T21:14:20.437517Z 0 [Note] InnoDB: Doing recovery: scanned up to log sequence number 13067749888 2016-06-11T21:14:20.502690Z 0 [Note] InnoDB: Doing recovery: scanned up to log sequence number 13068064750 2016-06-11T21:14:20.506945Z 0 [Note] InnoDB: Database was not shutdown normally! 2016-06-11T21:14:20.507001Z 0 [Note] InnoDB: Starting crash recovery. 2016-06-11T21:14:20.529558Z 0 [Warning] InnoDB: Database page corruption or a failed file read of page [page id: space=1191, page number=27489]. Trying to recover it from the doublewrite buffer. 2016-06-11T21:14:20.530098Z 0 [Note] InnoDB: Recovered page [page id: space=1191, page number=27489] from the doublewrite buffer. 2016-06-11T21:14:22.826572Z 0 [Note] InnoDB: 1 transaction(s) which must be rolled back or cleaned up in total 4375585 row operations to undo 2016-06-11T21:14:22.826619Z 0 [Note] InnoDB: Trx id counter is 13824 2016-06-11T21:14:22.826629Z 0 [Note] InnoDB: Starting an apply batch of log records to the database... InnoDB: Progress in percent: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 2016-06-11 21:14:24 0x7f777b3b5700 InnoDB: Assertion failure in thread 140151145322240 in file btr0cur.cc line 352 InnoDB: Failing assertion: btr_page_get_prev(get_block->frame, mtr) == page_get_page_no(page) InnoDB: We intentionally generate a memory trap. InnoDB: Submit a detailed bug report to http://bugs.mysql.com. InnoDB: If you get repeated assertion failures or crashes, even InnoDB: immediately after the mysqld startup, there may be InnoDB: corruption in the InnoDB tablespace. Please refer to InnoDB: http://dev.mysql.com/doc/refman/5.7/en/forcing-innodb-recovery.html InnoDB: about forcing recovery. 21:14:24 UTC - 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. Attempting to collect some information that could help diagnose the problem. As this is a crash and something is definitely wrong, the information collection process might fail. key_buffer_size=8388608 read_buffer_size=131072 max_used_connections=0 max_threads=151 thread_count=0 connection_count=0 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 68189 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. Thread pointer: 0x0 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 = 0 thread_stack 0x40000 mysqld(my_print_stacktrace+0x2c)[0xe77fec] mysqld(handle_fatal_signal+0x459)[0x7a7019] /lib/x86_64-linux-gnu/libpthread.so.0(+0xf8d0)[0x7f77bd8bc8d0] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0x37)[0x7f77bc0aa067] /lib/x86_64-linux-gnu/libc.so.6(abort+0x148)[0x7f77bc0ab448] mysqld[0x77d54d] mysqld[0x110a6a8] mysqld(_Z27btr_cur_search_to_nth_levelP12dict_index_tmPK8dtuple_t15page_cur_mode_tmP9btr_cur_tmPKcmP5mtr_t+0x1909)[0x1115579] mysqld(_Z30btr_pcur_restore_position_funcmP10btr_pcur_tPKcmP5mtr_t+0x22b)[0x111859b] mysqld[0xf9d805] mysqld[0xf9e811] mysqld(_Z29ibuf_merge_or_delete_for_pageP11buf_block_tRK9page_id_tPK11page_size_tm+0xb08)[0xfa29a8] mysqld(_Z20buf_page_io_completeP10buf_page_tb+0x5b3)[0x1133263] mysqld(_Z12fil_aio_waitm+0x13f)[0x11a38ff] mysqld(io_handler_thread+0xd0)[0x1098be0] /lib/x86_64-linux-gnu/libpthread.so.0(+0x80a4)[0x7f77bd8b50a4] /lib/x86_64-linux-gnu/libc.so.6(clone+0x6d)[0x7f77bc15d87d] 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.