Comment 1 for bug 1618257

InnoDB: ###### Diagnostic info printed to the standard error stream
2016-08-29T22:41:43.963670Z 0 [ERROR] [FATAL] InnoDB: Semaphore wait has lasted > 600 seconds. We intentionally crash the server because it appears to be hung.
2016-08-29 22:41:43 0x7fd41ffff700 InnoDB: Assertion failure in thread 140549046662912 in file ut0ut.cc line 921
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.
/usr/sbin/mysqld(my_print_stacktrace+0x2c)[0xec501c]
/usr/sbin/mysqld(handle_fatal_signal+0x461)[0x79d141]
/lib64/libpthread.so.0(+0xf7e0)[0x7fe20c60c7e0]
/lib64/libc.so.6(gsignal+0x35)[0x7fe20a846625]
/lib64/libc.so.6(abort+0x175)[0x7fe20a847e05]
/usr/sbin/mysqld[0x76bd86]
/usr/sbin/mysqld(_ZN2ib5fatalD1Ev+0xee)[0x114b91e]
/usr/sbin/mysqld(srv_error_monitor_thread+0xe50)[0x10e7200]
/lib64/libpthread.so.0(+0x7aa1)[0x7fe20c604aa1]
/lib64/libc.so.6(clone+0x6d)[0x7fe20a8fc93d]
2016-08-29T22:41:47.828145Z mysqld_safe Number of processes running now: 0
2016-08-29T22:41:47.829871Z mysqld_safe mysqld restarted