/home/buildbot/buildbot/build/mariadb-10.1.11/storage/tokudb/PerconaFT/locktree/treenode.cc:74 destroy_root: Assertion `is_empty()' failed (errno=0)
: Success
Backtrace: (Note: toku_do_assert=0x0x7fe9c38e1cb0)
/usr/lib/mysql/plugin/ha_tokudb.so(_Z19db_env_do_backtraceP8_IO_FILE+0x1b)[0x7fe9c394365b]
/usr/lib/mysql/plugin/ha_tokudb.so(+0x11e7e3)[0x7fe9c39437e3]
/usr/lib/mysql/plugin/ha_tokudb.so(+0xbc8d7)[0x7fe9c38e18d7]
/usr/lib/mysql/plugin/ha_tokudb.so(+0x3f64d)[0x7fe9c386464d]
/usr/lib/mysql/plugin/ha_tokudb.so(+0x10000c)[0x7fe9c392500c]
/usr/lib/mysql/plugin/ha_tokudb.so(+0xb9981)[0x7fe9c38de981]
/usr/lib/mysql/plugin/ha_tokudb.so(_Z13toku_db_closeP9__toku_db+0x59)[0x7fe9c3936049]
/usr/lib/mysql/plugin/ha_tokudb.so(+0x1110a9)[0x7fe9c39360a9]
/usr/lib/mysql/plugin/ha_tokudb.so(+0x4a6ad)[0x7fe9c386f6ad]
/usr/lib/mysql/plugin/ha_tokudb.so(_ZN9ha_tokudb7__closeEv+0x10f)[0x7fe9c386fa3f]
/usr/lib/mysql/plugin/ha_tokudb.so(_ZN9ha_tokudb5closeEv+0x26)[0x7fe9c386fb66]
/usr/sbin/mysqld(+0xa4e0f8)[0x7fe9c80130f8]
/usr/sbin/mysqld(+0x6df071)[0x7fe9c7ca4071]
/usr/sbin/mysqld(_Z26fast_alter_partition_tableP3THDP5TABLEP10Alter_infoP14HA_CREATE_INFOP10TABLE_LISTPcPKc+0x8d0)[0x7fe9c7cad640]
/usr/sbin/mysqld(_Z17mysql_alter_tableP3THDPcS1_P14HA_CREATE_INFOP10TABLE_LISTP10Alter_infojP8st_orderb+0x1c9c)[0x7fe9c7a7fd6c]
/usr/sbin/mysqld(_ZN19Sql_cmd_alter_table7executeEP3THD+0x62e)[0x7fe9c7ac602e]
/usr/sbin/mysqld(_Z21mysql_execute_commandP3THD+0x1226)[0x7fe9c79f41f6]
/usr/sbin/mysqld(_Z11mysql_parseP3THDPcjP12Parser_state+0x20d)[0x7fe9c79fc6dd]
/usr/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcj+0x2460)[0x7fe9c79ffa20]
/usr/sbin/mysqld(_Z10do_commandP3THD+0x169)[0x7fe9c7a001c9]
/usr/sbin/mysqld(_Z24do_handle_one_connectionP3THD+0x18a)[0x7fe9c7ac32ea]
/usr/sbin/mysqld(handle_one_connection+0x40)[0x7fe9c7ac34c0]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x8182)[0x7fe9c60c4182]
/lib/x86_64-linux-gnu/libc.so.6(clone+0x6d)[0x7fe9c57e747d]
Engine status:
BUILD_ID = 0
Env panic code: 18446744073709551615
Env panic string: /home/buildbot/buildbot/build/mariadb-10.1.11/storage/tokudb/PerconaFT/locktree/treenode.cc:74 destroy_root: Assertion `is_empty()' failed (errno=0)

time of environment creation: Wed Feb  3 15:33:11 2016
time of engine startup: Sat Feb 20 02:15:03 2016
time now: Thu Nov  3 00:15:05 2016
db opens: 101937
db closes: 101858
num open dbs now: 79
max open dbs: 195
period, in ms, that recovery log is automatically fsynced: 0
dictionary inserts: 12952987008
dictionary inserts fail: 0
dictionary deletes: 24782
dictionary deletes fail: 0
dictionary updates: 0
dictionary updates fail: 0
dictionary broadcast updates: 0
dictionary broadcast updates fail: 0
dictionary multi inserts: 52914432944
dictionary multi inserts fail: 24
dictionary multi deletes: 0
dictionary multi deletes fail: 0
dictionary updates multi: 0
dictionary updates multi fail: 0
le: max committed xr: 9
le: max provisional xr: 3
le: expanded: 0
le: max memsize: 307
le: size of leafentries before garbage collection (during message application): 574796060985
le: size of leafentries after garbage collection (during message application): 276550626863
le: size of leafentries before garbage collection (outside message application): 0
le: size of leafentries after garbage collection (outside message application): 0
checkpoint: period: 60
checkpoint: footprint: 0
checkpoint: last checkpoint began: Thu Nov  3 00:14:31 2016
checkpoint: last complete checkpoint began: Thu Nov  3 00:14:31 2016
checkpoint: last complete checkpoint ended: Thu Nov  3 00:14:33 2016
checkpoint: time spent during checkpoint (begin and end phases): 737777
checkpoint: time spent during last checkpoint (begin and end phases): 2
checkpoint: last complete checkpoint LSN: 112471980955
checkpoint: checkpoints taken : 369960
checkpoint: checkpoints failed: 0
checkpoint: waiters now: 0
checkpoint: waiters max: 0
checkpoint: non-checkpoint client wait on mo lock: 46792
checkpoint: non-checkpoint client wait on cs lock: 0
checkpoint: checkpoint begin time: 2440536548
checkpoint: long checkpoint begin time: 0
checkpoint: long checkpoint begin count: 0
checkpoint: checkpoint end time: 731110642574
checkpoint: long checkpoint end time: 93495267
checkpoint: long checkpoint end count: 1
cachetable: miss: 5753
cachetable: miss time: 132998115
cachetable: prefetches: 4068
cachetable: size current: 4291058166
cachetable: size limit: 4724464025
cachetable: size writing: 0
cachetable: size nonleaf: 77807842
cachetable: size leaf: 4213248036
cachetable: size rollback: 2288
cachetable: size cachepressure: 49617864
cachetable: size currently cloned data for checkpoint: 0
cachetable: evictions: 929803
cachetable: cleaner executions: 23672316
cachetable: cleaner period: 1
cachetable: cleaner iterations: 5
cachetable: number of waits on cache pressure: 0
cachetable: time waiting on cache pressure: 0
cachetable: number of long waits on cache pressure: 0
cachetable: long time waiting on cache pressure: 0
cachetable: number of threads in pool: 8
cachetable: number of currently active threads in pool: 0
cachetable: number of currently queued work items: 0
cachetable: largest number of queued work items: 2
cachetable: total number of work items processed: 481166
cachetable: total execution time of processing work items: 108102623
cachetable: number of threads in pool: 16
cachetable: number of currently active threads in pool: 0
cachetable: number of currently queued work items: 0
cachetable: largest number of queued work items: 1511
cachetable: total number of work items processed: 1539315
cachetable: total execution time of processing work items: 9775869
cachetable: number of threads in pool: 2
cachetable: number of currently active threads in pool: 0
cachetable: number of currently queued work items: 0
cachetable: largest number of queued work items: 22
cachetable: total number of work items processed: 1648502
cachetable: total execution time of processing work items: 203134196
locktree: memory size: 100548
locktree: memory size limit: 536870912
locktree: number of times lock escalation ran: 0
locktree: time spent running escalation (seconds): 0.000000
locktree: latest post-escalation memory size: 0
locktree: number of locktrees open now: 81
locktree: number of pending lock requests: 0
locktree: number of locktrees eligible for the STO: 0
locktree: number of times a locktree ended the STO early: 250
locktree: time spent ending the STO early (seconds): 8.381125
locktree: number of wait locks: 0
locktree: time waiting for locks: 0
locktree: number of long wait locks: 0
locktree: long time waiting for locks: 0
locktree: number of lock timeouts: 0
locktree: number of waits on lock escalation: 0
locktree: time waiting on lock escalation: 0
locktree: number of long waits on lock escalation: 0
locktree: long time waiting on lock escalation: 0
ft: dictionary updates: 0
ft: dictionary broadcast updates: 0
ft: descriptor set: 2044
ft: messages ignored by leaf due to msn: 8437746
ft: total search retries due to TRY_AGAIN: 742238
ft: searches requiring more tries than the height of the tree: 7
ft: searches requiring more tries than the height of the tree plus three: 5
ft: leaf nodes flushed to disk (not for checkpoint): 11077
ft: leaf nodes flushed to disk (not for checkpoint) (bytes): 230919680
ft: leaf nodes flushed to disk (not for checkpoint) (uncompressed bytes): 2618281899
ft: leaf nodes flushed to disk (not for checkpoint) (seconds): 216.797381
ft: nonleaf nodes flushed to disk (not for checkpoint): 376
ft: nonleaf nodes flushed to disk (not for checkpoint) (bytes): 44958720
ft: nonleaf nodes flushed to disk (not for checkpoint) (uncompressed bytes): 522555519
ft: nonleaf nodes flushed to disk (not for checkpoint) (seconds): 7.574571
ft: leaf nodes flushed to disk (for checkpoint): 2644389
ft: leaf nodes flushed to disk (for checkpoint) (bytes): 615077421056
ft: leaf nodes flushed to disk (for checkpoint) (uncompressed bytes): 7674675688191
ft: leaf nodes flushed to disk (for checkpoint) (seconds): 57697.178587
ft: nonleaf nodes flushed to disk (for checkpoint): 1849626
ft: nonleaf nodes flushed to disk (for checkpoint) (bytes): 269757828096
ft: nonleaf nodes flushed to disk (for checkpoint) (uncompressed bytes): 3044135888180
ft: nonleaf nodes flushed to disk (for checkpoint) (seconds): 35339.592370
ft: uncompressed / compressed bytes written (leaf): UNKNOWN STATUS TYPE: 6
ft: uncompressed / compressed bytes written (nonleaf): UNKNOWN STATUS TYPE: 6
ft: uncompressed / compressed bytes written (overall): UNKNOWN STATUS TYPE: 6
ft: nonleaf node partial evictions: 14172526
ft: nonleaf node partial evictions (bytes): 30792237490
ft: leaf node partial evictions: 59201464
ft: leaf node partial evictions (bytes): 5130705502134
ft: leaf node full evictions: 821463
ft: leaf node full evictions (bytes): 4607209244
ft: nonleaf node full evictions: 108340
ft: nonleaf node full evictions (bytes): 327372034
ft: leaf nodes created: 863665
ft: nonleaf nodes created: 118792
ft: leaf nodes destroyed: 0
ft: nonleaf nodes destroyed: 0
ft: bytes of messages injected at root (all trees): 1374439093008
ft: bytes of messages flushed from h1 nodes to leaves: 1374376820043
ft: bytes of messages currently in trees (estimate): 62272965
ft: messages injected at root: 23209231670
ft: broadcast messages injected at root: 0
ft: basements decompressed as a target of a query: 0
ft: basements decompressed for prelocked range: 0
ft: basements decompressed for prefetch: 0
ft: basements decompressed for write: 0
ft: buffers decompressed as a target of a query: 1430
ft: buffers decompressed for prelocked range: 1258
ft: buffers decompressed for prefetch: 0
ft: buffers decompressed for write: 14118794
ft: pivots fetched for query: 4584
ft: pivots fetched for query (bytes): 149849600
ft: pivots fetched for query (seconds): 26.615034
ft: pivots fetched for prefetch: 4068
ft: pivots fetched for prefetch (bytes): 133300224
ft: pivots fetched for prefetch (seconds): 15.791660
ft: pivots fetched for write: 51
ft: pivots fetched for write (bytes): 136704
ft: pivots fetched for write (seconds): 0.265308
ft: basements fetched as a target of a query: 737644
ft: basements fetched as a target of a query (bytes): 5894133248
ft: basements fetched as a target of a query (seconds): 1336.912260
ft: basements fetched for prelocked range: 68878
ft: basements fetched for prelocked range (bytes): 519206400
ft: basements fetched for prelocked range (seconds): 92.113701
ft: basements fetched for prefetch: 499486
ft: basements fetched for prefetch (bytes): 3758028800
ft: basements fetched for prefetch (seconds): 668.285470
ft: basements fetched for write: 564933
ft: basements fetched for write (bytes): 3668996096
ft: basements fetched for write (seconds): 1019.298457
ft: buffers fetched as a target of a query: 30
ft: buffers fetched as a target of a query (bytes): 21504
ft: buffers fetched as a target of a query (seconds): 0.181353
ft: buffers fetched for prelocked range: 0
ft: buffers fetched for prelocked range (bytes): 0
ft: buffers fetched for prelocked range (seconds): 0.000000
ft: buffers fetched for prefetch: 0
ft: buffers fetched for prefetch (bytes): 0
ft: buffers fetched for prefetch (seconds): 0.000000
ft: buffers fetched for write: 179
ft: buffers fetched for write (bytes): 766464
ft: buffers fetched for write (seconds): 0.240896
ft: leaf compression to memory (seconds): 420922.313558
ft: leaf serialization to memory (seconds): 13231.487302
ft: leaf decompression to memory (seconds): 1636.170565
ft: leaf deserialization to memory (seconds): 61.126969
ft: nonleaf compression to memory (seconds): 217709.801068
ft: nonleaf serialization to memory (seconds): 8340.082105
ft: nonleaf decompression to memory (seconds): 38.614889
ft: nonleaf deserialization to memory (seconds): 97.281689
ft: promotion: roots split: 2458
ft: promotion: leaf roots injected into: 13004750628
ft: promotion: h1 roots injected into: 197698558
ft: promotion: injections at depth 0: 1578533627
ft: promotion: injections at depth 1: 4999725621
ft: promotion: injections at depth 2: 17084173269
ft: promotion: injections at depth 3: 2239701430
ft: promotion: injections lower than depth 3: 155744086
ft: promotion: stopped because of a nonempty buffer: 5626253640
ft: promotion: stopped at height 1: 23610
ft: promotion: stopped because the child was locked or not at all in memory: 152181
ft: promotion: stopped because the child was not fully in memory: 2
ft: promotion: stopped anyway, after locking the child: 31970
ft: basement nodes deserialized with fixed-keysize: 1865412
ft: basement nodes deserialized with variable-keysize: 5633
ft: promotion: succeeded in using the rightmost leaf shortcut: 26608255894
ft: promotion: tried the rightmost leaf shorcut but failed (out-of-bounds): 112086
ft: promotion: tried the rightmost leaf shorcut but failed (child reactive): 3084230
ft: cursor skipped deleted leaf entries: 292588
ft flusher: total nodes potentially flushed by cleaner thread: 1537068
ft flusher: height-one nodes flushed by cleaner thread: 1483691
ft flusher: height-greater-than-one nodes flushed by cleaner thread: 53377
ft flusher: nodes cleaned which had empty buffers: 1489709
ft flusher: nodes dirtied by cleaner thread: 78779
ft flusher: max bytes in a buffer flushed by cleaner thread: 3935704
ft flusher: min bytes in a buffer flushed by cleaner thread: 57
ft flusher: total bytes in buffers flushed by cleaner thread: 62086083632
ft flusher: max workdone in a buffer flushed by cleaner thread: 3599949
ft flusher: min workdone in a buffer flushed by cleaner thread: 0
ft flusher: total workdone in buffers flushed by cleaner thread: 620598175
ft flusher: times cleaner thread tries to merge a leaf: 0
ft flusher: cleaner thread leaf merges in progress: 0
ft flusher: cleaner thread leaf merges successful: 0
ft flusher: nodes dirtied by cleaner thread leaf merges: 0
ft flusher: total number of flushes done by flusher threads or cleaner threads: 429496
ft flusher: number of in memory flushes: 429496
ft flusher: number of flushes that read something off disk: 0
ft flusher: number of flushes that triggered another flush in child: 8717
ft flusher: number of flushes that triggered 1 cascading flush: 8612
ft flusher: number of flushes that triggered 2 cascading flushes: 105
ft flusher: number of flushes that triggered 3 cascading flushes: 0
ft flusher: number of flushes that triggered 4 cascading flushes: 0
ft flusher: number of flushes that triggered 5 cascading flushes: 0
ft flusher: number of flushes that triggered over 5 cascading flushes: 0
ft flusher: leaf node splits: 861110
ft flusher: nonleaf node splits: 116334
ft flusher: leaf node merges: 0
ft flusher: nonleaf node merges: 0
ft flusher: leaf node balances: 0
hot: operations ever started: 0
hot: operations successfully completed: 0
hot: operations aborted: 0
hot: max number of flushes from root ever required to optimize a tree: 0
txn: begin: 37207997733
txn: begin read only: 2465
txn: successful commits: 37207962902
txn: aborts: 37296
logger: next LSN: 112472023269
logger: writes: 6358554
logger: writes (bytes): 5828996404859
logger: writes (uncompressed bytes): 5828996404859
logger: writes (seconds): 6053.100956
logger: number of long logger write operations: 92
indexer: number of indexers successfully created: 0
indexer: number of calls to toku_indexer_create_indexer() that failed: 0
indexer: number of calls to indexer->build() succeeded: 0
indexer: number of calls to indexer->build() failed: 0
indexer: number of calls to indexer->close() that succeeded: 0
indexer: number of calls to indexer->close() that failed: 0
indexer: number of calls to indexer->abort(): 0
indexer: number of indexers currently in existence: 0
indexer: max number of indexers that ever existed simultaneously: 0
loader: number of loaders successfully created: 0
loader: number of calls to toku_loader_create_loader() that failed: 0
loader: number of calls to loader->put() succeeded: 0
loader: number of calls to loader->put() failed: 0
loader: number of calls to loader->close() that succeeded: 0
loader: number of calls to loader->close() that failed: 0
loader: number of calls to loader->abort(): 0
loader: number of loaders currently in existence: 0
loader: max number of loaders that ever existed simultaneously: 0
memory: number of malloc operations: 0
memory: number of free operations: 0
memory: number of realloc operations: 0
memory: number of malloc operations that failed: 0
memory: number of realloc operations that failed: 16599
memory: number of bytes requested: 0
memory: number of bytes used (requested + overhead): 0
memory: number of bytes freed: 0
memory: largest attempted allocation size: 0
memory: size of the last failed allocation attempt: 0
memory: estimated maximum memory footprint: 0
memory: mallocator version: 3.5.1-0-g7709a64c59daf0b1f938be49472fcc499e1bd136
memory: mmap threshold: 4194304
filesystem: ENOSPC redzone state: 0
filesystem: threads currently blocked by full disk: 0
filesystem: number of operations rejected by enospc prevention (red zone): 0
filesystem: most recent disk full: Thu Jan  1 02:00:00 1970
filesystem: number of write operations that returned ENOSPC: 0
filesystem: fsync time: 385383730060
filesystem: fsync count: 10018602
filesystem: long fsync time: 2462554167
filesystem: long fsync count: 1167
context: tree traversals blocked by a full fetch: 0
context: tree traversals blocked by a partial fetch: 0
context: tree traversals blocked by a full eviction: 0
context: tree traversals blocked by a partial eviction: 4
context: tree traversals blocked by a message injection: 74096
context: tree traversals blocked by a message application: 19
context: tree traversals blocked by a flush: 3
context: tree traversals blocked by a the cleaner thread: 3
context: tree traversals blocked by something uninstrumented: 8514
context: promotion blocked by a full fetch (should never happen): 0
context: promotion blocked by a partial fetch (should never happen): 0
context: promotion blocked by a full eviction (should never happen): 0
context: promotion blocked by a partial eviction (should never happen): 21
context: promotion blocked by a message injection: 17500
context: promotion blocked by a message application: 0
context: promotion blocked by a flush: 2361
context: promotion blocked by the cleaner thread: 342
context: promotion blocked by something uninstrumented: 752
context: something uninstrumented blocked by something uninstrumented: 2

Memory usage:
Arena 0:
system bytes     =          0
in use bytes     =          0
Total (incl. mmap):
system bytes     =          0
in use bytes     =          0
max mmap regions =          0
max mmap bytes   =          0
161103  0:15:05 [ERROR] 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 http://kb.askmonty.org/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: 10.1.11-MariaDB-1~trusty
key_buffer_size=16777216
read_buffer_size=131072
max_used_connections=21
max_threads=153
thread_count=7
It is possible that mysqld could use up to 
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 1248906 K  bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x0x7fe94efec008
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 = 0x7fe9c85fcdf0 thread_stack 0x30000
/usr/sbin/mysqld(my_print_stacktrace+0x2e)[0x7fe9c80463fe]
/usr/sbin/mysqld(handle_fatal_signal+0x38d)[0x7fe9c7b73f9d]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x10340)[0x7fe9c60cc340]
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x39)[0x7fe9c5723cc9]
/lib/x86_64-linux-gnu/libc.so.6(abort+0x148)[0x7fe9c57270d8]
/usr/lib/mysql/plugin/ha_tokudb.so(+0x11e7e8)[0x7fe9c39437e8]
/usr/lib/mysql/plugin/ha_tokudb.so(+0xbc8d7)[0x7fe9c38e18d7]
/usr/lib/mysql/plugin/ha_tokudb.so(+0x3f64d)[0x7fe9c386464d]
/usr/lib/mysql/plugin/ha_tokudb.so(+0x10000c)[0x7fe9c392500c]
/usr/lib/mysql/plugin/ha_tokudb.so(+0xb9981)[0x7fe9c38de981]
/usr/lib/mysql/plugin/ha_tokudb.so(_Z13toku_db_closeP9__toku_db+0x59)[0x7fe9c3936049]
/usr/lib/mysql/plugin/ha_tokudb.so(+0x1110a9)[0x7fe9c39360a9]
/usr/lib/mysql/plugin/ha_tokudb.so(+0x4a6ad)[0x7fe9c386f6ad]
/usr/lib/mysql/plugin/ha_tokudb.so(_ZN9ha_tokudb7__closeEv+0x10f)[0x7fe9c386fa3f]
/usr/lib/mysql/plugin/ha_tokudb.so(_ZN9ha_tokudb5closeEv+0x26)[0x7fe9c386fb66]
/usr/sbin/mysqld(+0xa4e0f8)[0x7fe9c80130f8]
/usr/sbin/mysqld(+0x6df071)[0x7fe9c7ca4071]
/usr/sbin/mysqld(_Z26fast_alter_partition_tableP3THDP5TABLEP10Alter_infoP14HA_CREATE_INFOP10TABLE_LISTPcPKc+0x8d0)[0x7fe9c7cad640]
/usr/sbin/mysqld(_Z17mysql_alter_tableP3THDPcS1_P14HA_CREATE_INFOP10TABLE_LISTP10Alter_infojP8st_orderb+0x1c9c)[0x7fe9c7a7fd6c]
/usr/sbin/mysqld(_ZN19Sql_cmd_alter_table7executeEP3THD+0x62e)[0x7fe9c7ac602e]
/usr/sbin/mysqld(_Z21mysql_execute_commandP3THD+0x1226)[0x7fe9c79f41f6]
/usr/sbin/mysqld(_Z11mysql_parseP3THDPcjP12Parser_state+0x20d)[0x7fe9c79fc6dd]
/usr/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcj+0x2460)[0x7fe9c79ffa20]
/usr/sbin/mysqld(_Z10do_commandP3THD+0x169)[0x7fe9c7a001c9]
/usr/sbin/mysqld(_Z24do_handle_one_connectionP3THD+0x18a)[0x7fe9c7ac32ea]
/usr/sbin/mysqld(handle_one_connection+0x40)[0x7fe9c7ac34c0]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x8182)[0x7fe9c60c4182]
/lib/x86_64-linux-gnu/libc.so.6(clone+0x6d)[0x7fe9c57e747d]

Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query (0x7fe941020020): is an invalid pointer
Connection ID (thread ID): 687376
Status: NOT_KILLED

Optimizer switch: index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,engine_condition_pushdown=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=on,semijoin_with_cache=on,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,table_elimination=on,extended_keys=on,exists_to_in=on

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.