InnoDB key rotation is not skipping unused pages

encryption.innodb-checksum-algorithm '8k,cbc,xtradb' w4 [ fail ]

        Test ended at 2017-06-22 01:05:03

CURRENT_TEST: encryption.innodb-checksum-algorithm

mysqltest: At line 110: query 'ALTER TABLE t_$checksum DISCARD TABLESPACE' failed: 2013: Lost connection to MySQL server during query

The result from queries just before the failure was:

< snip >

restore: t_crc32 .ibd and .cfg files

restore: tpe_crc32 .ibd and .cfg files

restore: tp_crc32 .ibd and .cfg files

ALTER TABLE tce_crc32 IMPORT TABLESPACE;

update tce_crc32 set b=substr(b,1);

ALTER TABLE tc_crc32 IMPORT TABLESPACE;

update tc_crc32 set b=substr(b,1);

ALTER TABLE te_crc32 IMPORT TABLESPACE;

update te_crc32 set b=substr(b,1);

ALTER TABLE t_crc32 IMPORT TABLESPACE;

update t_crc32 set b=substr(b,1);

ALTER TABLE tpe_crc32 IMPORT TABLESPACE;

update tpe_crc32 set b=substr(b,1);

ALTER TABLE tp_crc32 IMPORT TABLESPACE;

update tp_crc32 set b=substr(b,1);

SET GLOBAL innodb_checksum_algorithm=crc32;

ALTER TABLE tce_crc32 DISCARD TABLESPACE;

ALTER TABLE tc_crc32 DISCARD TABLESPACE;

ALTER TABLE te_crc32 DISCARD TABLESPACE;

ALTER TABLE t_crc32 DISCARD TABLESPACE;

More results from queries before failure can be found in /mnt/buildbot/build/mariadb-10.1.25/mysql-test/var/4/log/innodb-checksum-algorithm.log

Server [mysqld.1 - pid: 30197, winpid: 30197, exit: 256] failed during test run

Server log from this test:

----------SERVER LOG START-----------

2017-06-22  1:05:00 3072244032 [Note] /mnt/buildbot/build/mariadb-10.1.25/sql/mysqld (mysqld 10.1.25-MariaDB-debug) starting as process 30198 ...

2017-06-22  1:05:00 3072244032 [Warning] Could not increase number of max_open_files to more than 1024 (request: 4162)

2017-06-22  1:05:00 3072244032 [Note] Plugin 'SEQUENCE' is disabled.

2017-06-22  1:05:00 3072244032 [Note] Plugin 'partition' is disabled.

2017-06-22  1:05:00 3072244032 [Note] InnoDB:  innodb-page-size has been changed from the default value 16384 to 8192 .

innodb_open_files should not be greater than the open_files_limit.

2017-06-22  1:05:00 3072244032 [Note] InnoDB: innodb_empty_free_list_algorithm has been changed to legacy because of small buffer pool size. In order to use backoff, increase buffer pool at least up to 20MB.

2017-06-22  1:05:00 3072244032 [Note] InnoDB: Using mutexes to ref count buffer pool pages

2017-06-22  1:05:00 3072244032 [Note] InnoDB:  InnoDB: !!!!!!!! UNIV_DEBUG switched on !!!!!!!!!

2017-06-22  1:05:00 3072244032 [Note] InnoDB:  InnoDB: !!!!!!!! UNIV_SYNC_DEBUG switched on !!!!!!!!!

2017-06-22  1:05:00 3072244032 [Note] InnoDB: The InnoDB memory heap is disabled

2017-06-22  1:05:00 3072244032 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins

2017-06-22  1:05:00 3072244032 [Note] InnoDB: GCC builtin __sync_synchronize() is used for memory barrier

2017-06-22  1:05:00 3072244032 [Note] InnoDB: Compressed tables use zlib 1.2.3.4

2017-06-22  1:05:00 3072244032 [Note] InnoDB: Using Linux native AIO

2017-06-22  1:05:00 3072244032 [Note] InnoDB: Using generic crc32 instructions

2017-06-22  1:05:00 3072244032 [Note] InnoDB: Initializing buffer pool, size = 8.0M

2017-06-22  1:05:00 3072244032 [Note] InnoDB: Completed initialization of buffer pool

2017-06-22  1:05:00 3072244032 [Note] InnoDB: Highest supported file format is Barracuda.

2017-06-22  1:05:01 3072244032 [Note] InnoDB: 128 rollback segment(s) are active.

2017-06-22  1:05:01 3072244032 [Note] InnoDB: Waiting for purge to start

2017-06-22  1:05:01 3072244032 [Note] InnoDB:  Percona XtraDB (http://www.percona.com) 5.6.36-82.0 started; log sequence number 934005

2017-06-22  1:05:01 2824854336 [Note] InnoDB: Dumping buffer pool(s) not yet started

2017-06-22  1:05:01 3072244032 [Note] Plugin 'INNODB_SYS_DATAFILES' is disabled.

2017-06-22  1:05:01 3072244032 [Note] Plugin 'INNODB_SYS_TABLESTATS' is disabled.

2017-06-22  1:05:01 3072244032 [Note] Plugin 'INNODB_SYS_INDEXES' is disabled.

2017-06-22  1:05:01 3072244032 [Note] Plugin 'XTRADB_RSEG' is disabled.

2017-06-22  1:05:01 3072244032 [Note] Plugin 'CHANGED_PAGE_BITMAPS' is disabled.

2017-06-22  1:05:01 3072244032 [Note] Plugin 'INNODB_FT_BEING_DELETED' is disabled.

2017-06-22  1:05:01 3072244032 [Note] Plugin 'INNODB_LOCK_WAITS' is disabled.

2017-06-22  1:05:01 3072244032 [Note] Plugin 'INNODB_TABLESPACES_ENCRYPTION' is disabled.

2017-06-22  1:05:01 3072244032 [Note] Plugin 'XTRADB_INTERNAL_HASH_TABLES' is disabled.

2017-06-22  1:05:01 3072244032 [Note] Plugin 'INNODB_SYS_FIELDS' is disabled.

2017-06-22  1:05:01 3072244032 [Note] Plugin 'INNODB_CMPMEM_RESET' is disabled.

2017-06-22  1:05:01 3072244032 [Note] Plugin 'FEEDBACK' is disabled.

2017-06-22  1:05:01 3072244032 [Note] Plugin 'INNODB_CMP' is disabled.

2017-06-22  1:05:01 3072244032 [Note] Plugin 'INNODB_FT_INDEX_TABLE' is disabled.

2017-06-22  1:05:01 3072244032 [Note] Plugin 'INNODB_SYS_TABLESPACES' is disabled.

2017-06-22  1:05:01 3072244032 [Note] Plugin 'INNODB_MUTEXES' is disabled.

2017-06-22  1:05:01 3072244032 [Note] Plugin 'INNODB_CMP_RESET' is disabled.

2017-06-22  1:05:01 3072244032 [Note] Plugin 'INNODB_FT_INDEX_CACHE' is disabled.

2017-06-22  1:05:01 3072244032 [Note] Plugin 'INNODB_FT_DEFAULT_STOPWORD' is disabled.

2017-06-22  1:05:01 3072244032 [Note] Plugin 'INNODB_SYS_COLUMNS' is disabled.

2017-06-22  1:05:01 3072244032 [Note] Plugin 'INNODB_FT_CONFIG' is disabled.

2017-06-22  1:05:01 3072244032 [Note] Plugin 'INNODB_CMP_PER_INDEX_RESET' is disabled.

2017-06-22  1:05:01 3072244032 [Note] Plugin 'XTRADB_READ_VIEW' is disabled.

2017-06-22  1:05:01 3072244032 [Note] Plugin 'INNODB_SYS_SEMAPHORE_WAITS' is disabled.

2017-06-22  1:05:01 3072244032 [Note] Plugin 'INNODB_CHANGED_PAGES' is disabled.

2017-06-22  1:05:01 3072244032 [Note] Plugin 'INNODB_FT_DELETED' is disabled.

2017-06-22  1:05:01 3072244032 [Note] Plugin 'INNODB_TABLESPACES_SCRUBBING' is disabled.

2017-06-22  1:05:01 3072244032 [Warning] /mnt/buildbot/build/mariadb-10.1.25/sql/mysqld: unknown option '--loose-pam-debug'

2017-06-22  1:05:01 3072244032 [Note] Server socket created on IP: '127.0.0.1'.

2017-06-22  1:05:01 3072244032 [Note] /mnt/buildbot/build/mariadb-10.1.25/sql/mysqld: ready for connections.

Version: '10.1.25-MariaDB-debug'  socket: '/mnt/buildbot/build/mariadb-10.1.25/mysql-test/var/tmp/4/mysqld.1.sock'  port: 16000  Source distribution

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Creating #1 thread id 2805988160 total threads 4.

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Creating #2 thread id 2797595456 total threads 4.

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Creating #3 thread id 2789202752 total threads 4.

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Creating #4 thread id 2780810048 total threads 4.

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Sync to disk of '"test"."tce_crc32"' started.

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Stopping purge

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Writing table metadata to './test/tce_crc32.cfg'

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Table '"test"."tce_crc32"' flushed to disk

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Sync to disk of '"test"."tc_crc32"' started.

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Writing table metadata to './test/tc_crc32.cfg'

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Table '"test"."tc_crc32"' flushed to disk

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Sync to disk of '"test"."te_crc32"' started.

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Writing table metadata to './test/te_crc32.cfg'

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Table '"test"."te_crc32"' flushed to disk

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Sync to disk of '"test"."t_crc32"' started.

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Writing table metadata to './test/t_crc32.cfg'

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Table '"test"."t_crc32"' flushed to disk

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Sync to disk of '"test"."tpe_crc32"' started.

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Writing table metadata to './test/tpe_crc32.cfg'

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Table '"test"."tpe_crc32"' flushed to disk

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Sync to disk of '"test"."tp_crc32"' started.

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Writing table metadata to './test/tp_crc32.cfg'

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Table '"test"."tp_crc32"' flushed to disk

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Deleting the meta-data file './test/tce_crc32.cfg'

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Deleting the meta-data file './test/tc_crc32.cfg'

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Deleting the meta-data file './test/te_crc32.cfg'

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Deleting the meta-data file './test/t_crc32.cfg'

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Deleting the meta-data file './test/tpe_crc32.cfg'

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Deleting the meta-data file './test/tp_crc32.cfg'

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Resuming purge

2017-06-22  1:05:01 2974498624 [Warning] InnoDB: innodb_checksum_algorithm is set to "strict_crc32" but the page [page id: space=0, page number=447] contains a valid checksum "innodb". Accepting the page as valid. Change innodb_checksum_algorithm to "crc32" to silently accept such pages or rewrite all pages so that they contain "crc32" checksum.

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Importing tablespace for table 'test/tce_crc32' that was exported from host 'ubuntu-precise-i386'

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Phase I - Update all pages

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Sync to disk

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Sync to disk - done!

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Phase III - Flush changes to disk

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Phase IV - Flush complete

2017-06-22  1:05:01 2974498624 [Note] InnoDB: "test"."tce_crc32" autoinc value set to 2

2017-06-22  1:05:01 2789202752 [Warning] InnoDB: innodb_checksum_algorithm is set to "strict_crc32" but the page [page id: space=0, page number=13] contains a valid checksum "innodb". Accepting the page as valid. Change innodb_checksum_algorithm to "crc32" to silently accept such pages or rewrite all pages so that they contain "crc32" checksum.

2017-06-22  1:05:01 2805988160 [Warning] InnoDB: innodb_checksum_algorithm is set to "strict_crc32" but the page [page id: space=0, page number=61] contains a valid checksum "innodb". Accepting the page as valid. Change innodb_checksum_algorithm to "crc32" to silently accept such pages or rewrite all pages so that they contain "crc32" checksum.

2017-06-22  1:05:01 2797595456 [Warning] InnoDB: innodb_checksum_algorithm is set to "strict_crc32" but the page [page id: space=0, page number=421] contains a valid checksum "innodb". Accepting the page as valid. Change innodb_checksum_algorithm to "crc32" to silently accept such pages or rewrite all pages so that they contain "crc32" checksum.

2017-06-22  1:05:01 2780810048 [Warning] InnoDB: innodb_checksum_algorithm is set to "strict_crc32" but the page [page id: space=0, page number=395] contains a valid checksum "innodb". Accepting the page as valid. Change innodb_checksum_algorithm to "crc32" to silently accept such pages or rewrite all pages so that they contain "crc32" checksum.

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Importing tablespace for table 'test/tc_crc32' that was exported from host 'ubuntu-precise-i386'

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Phase I - Update all pages

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Sync to disk

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Sync to disk - done!

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Phase III - Flush changes to disk

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Phase IV - Flush complete

2017-06-22  1:05:01 2974498624 [Note] InnoDB: "test"."tc_crc32" autoinc value set to 2

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Importing tablespace for table 'test/te_crc32' that was exported from host 'ubuntu-precise-i386'

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Phase I - Update all pages

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Sync to disk

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Sync to disk - done!

2017-06-22  1:05:01 2789202752 [Warning] InnoDB: innodb_checksum_algorithm is set to "strict_crc32" but the page [page id: space=0, page number=14] contains a valid checksum "innodb". Accepting the page as valid. Change innodb_checksum_algorithm to "crc32" to silently accept such pages or rewrite all pages so that they contain "crc32" checksum.

2017-06-22  1:05:01 2805988160 [Warning] InnoDB: innodb_checksum_algorithm is set to "strict_crc32" but the page [page id: space=0, page number=62] contains a valid checksum "innodb". Accepting the page as valid. Change innodb_checksum_algorithm to "crc32" to silently accept such pages or rewrite all pages so that they contain "crc32" checksum.

2017-06-22  1:05:01 2797595456 [Warning] InnoDB: innodb_checksum_algorithm is set to "strict_crc32" but the page [page id: space=0, page number=466] contains a valid checksum "innodb". Accepting the page as valid. Change innodb_checksum_algorithm to "crc32" to silently accept such pages or rewrite all pages so that they contain "crc32" checksum.

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Phase III - Flush changes to disk

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Phase IV - Flush complete

2017-06-22  1:05:01 2974498624 [Note] InnoDB: "test"."te_crc32" autoinc value set to 2

2017-06-22  1:05:01 2789202752 [Warning] InnoDB: innodb_checksum_algorithm is set to "strict_crc32" but the page [page id: space=0, page number=15] contains a valid checksum "innodb". Accepting the page as valid. Change innodb_checksum_algorithm to "crc32" to silently accept such pages or rewrite all pages so that they contain "crc32" checksum.

2017-06-22  1:05:01 2805988160 [Warning] InnoDB: innodb_checksum_algorithm is set to "strict_crc32" but the page [page id: space=0, page number=63] contains a valid checksum "innodb". Accepting the page as valid. Change innodb_checksum_algorithm to "crc32" to silently accept such pages or rewrite all pages so that they contain "crc32" checksum.

2017-06-22  1:05:01 2797595456 [Warning] InnoDB: innodb_checksum_algorithm is set to "strict_crc32" but the page [page id: space=0, page number=469] contains a valid checksum "innodb". Accepting the page as valid. Change innodb_checksum_algorithm to "crc32" to silently accept such pages or rewrite all pages so that they contain "crc32" checksum.

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Importing tablespace for table 'test/t_crc32' that was exported from host 'ubuntu-precise-i386'

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Phase I - Update all pages

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Sync to disk

2017-06-22  1:05:01 2974498624 [Note] InnoDB: Sync to disk - done!

2017-06-22  1:05:02 2789202752 [Warning] InnoDB: innodb_checksum_algorithm is set to "strict_crc32" but the page [page id: space=0, page number=16] contains a valid checksum "innodb". Accepting the page as valid. Change innodb_checksum_algorithm to "crc32" to silently accept such pages or rewrite all pages so that they contain "crc32" checksum.

2017-06-22  1:05:02 2805988160 [Warning] InnoDB: innodb_checksum_algorithm is set to "strict_crc32" but the page [page id: space=0, page number=64] contains a valid checksum "innodb". Accepting the page as valid. Change innodb_checksum_algorithm to "crc32" to silently accept such pages or rewrite all pages so that they contain "crc32" checksum.

2017-06-22  1:05:02 2974498624 [Note] InnoDB: Phase III - Flush changes to disk

2017-06-22  1:05:02 2974498624 [Note] InnoDB: Phase IV - Flush complete

2017-06-22  1:05:02 2974498624 [Note] InnoDB: "test"."t_crc32" autoinc value set to 2

2017-06-22  1:05:02 2974498624 [Note] InnoDB: Importing tablespace for table 'test/tpe_crc32' that was exported from host 'ubuntu-precise-i386'

2017-06-22  1:05:02 2974498624 [Note] InnoDB: Phase I - Update all pages

2017-06-22  1:05:02 2974498624 [Note] InnoDB: Sync to disk

2017-06-22  1:05:02 2974498624 [Note] InnoDB: Sync to disk - done!

2017-06-22  1:05:02 2789202752 [Warning] InnoDB: innodb_checksum_algorithm is set to "strict_crc32" but the page [page id: space=0, page number=17] contains a valid checksum "innodb". Accepting the page as valid. Change innodb_checksum_algorithm to "crc32" to silently accept such pages or rewrite all pages so that they contain "crc32" checksum.

2017-06-22  1:05:02 2805988160 [Warning] InnoDB: innodb_checksum_algorithm is set to "strict_crc32" but the page [page id: space=0, page number=65] contains a valid checksum "innodb". Accepting the page as valid. Change innodb_checksum_algorithm to "crc32" to silently accept such pages or rewrite all pages so that they contain "crc32" checksum.

2017-06-22  1:05:02 2974498624 [Note] InnoDB: Phase III - Flush changes to disk

2017-06-22  1:05:02 2974498624 [Note] InnoDB: Phase IV - Flush complete

2017-06-22  1:05:02 2974498624 [Note] InnoDB: "test"."tpe_crc32" autoinc value set to 2

2017-06-22  1:05:02 2974498624 [Note] InnoDB: Importing tablespace for table 'test/tp_crc32' that was exported from host 'ubuntu-precise-i386'

2017-06-22  1:05:02 2974498624 [Note] InnoDB: Phase I - Update all pages

2017-06-22  1:05:02 2974498624 [Note] InnoDB: Sync to disk

2017-06-22  1:05:02 2974498624 [Note] InnoDB: Sync to disk - done!

2017-06-22  1:05:02 2789202752 [Warning] InnoDB: innodb_checksum_algorithm is set to "strict_crc32" but the page [page id: space=0, page number=18] contains a valid checksum "innodb". Accepting the page as valid. Change innodb_checksum_algorithm to "crc32" to silently accept such pages or rewrite all pages so that they contain "crc32" checksum.

2017-06-22  1:05:02 2805988160 [Warning] InnoDB: innodb_checksum_algorithm is set to "strict_crc32" but the page [page id: space=0, page number=66] contains a valid checksum "innodb". Accepting the page as valid. Change innodb_checksum_algorithm to "crc32" to silently accept such pages or rewrite all pages so that they contain "crc32" checksum.

2017-06-22  1:05:02 2974498624 [Note] InnoDB: Phase III - Flush changes to disk

2017-06-22  1:05:02 2974498624 [Note] InnoDB: Phase IV - Flush complete

2017-06-22  1:05:02 2974498624 [Note] InnoDB: "test"."tp_crc32" autoinc value set to 2

2017-06-22  1:05:02 2780810048 [ERROR] InnoDB: Corruption: Block space_id 0 != page space_id 0 or Block offset 510 != page offset 0

2017-06-22 01:05:02 a5bfcb40  InnoDB: Assertion failure in thread 2780810048 in file buf0buf.cc line 2734

InnoDB: Failing assertion: block->page.offset == page_get_page_no(page_align(ptr))

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/5.6/en/forcing-innodb-recovery.html

InnoDB: about forcing recovery.

170622  1:05:02 [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 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: 10.1.25-MariaDB-debug

key_buffer_size=1048576

read_buffer_size=131072

max_used_connections=1

max_threads=153

thread_count=1

It is possible that mysqld could use up to 

key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 61820 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 = 0x0 thread_stack 0x48400

/mnt/buildbot/build/mariadb-10.1.25/sql/mysqld(my_print_stacktrace+0x32)[0x8b2eaf1]

/mnt/buildbot/build/mariadb-10.1.25/sql/mysqld(handle_fatal_signal+0x3b0)[0x84d9008]

[0xb773f400]

[0xb773f424]

/lib/i386-linux-gnu/libc.so.6(gsignal+0x4f)[0xb721b1ef]

/lib/i386-linux-gnu/libc.so.6(abort+0x175)[0xb721e835]

/mnt/buildbot/build/mariadb-10.1.25/sql/mysqld[0x898d5ac]

/mnt/buildbot/build/mariadb-10.1.25/sql/mysqld[0x898d61f]

/mnt/buildbot/build/mariadb-10.1.25/sql/mysqld[0x8828df1]

/mnt/buildbot/build/mariadb-10.1.25/sql/mysqld[0x88245c0]

mysys/stacktrace.c:267(my_print_stacktrace)[0x8825454]

fil/fil0crypt.cc:1992(fil_crypt_rotate_page)[0x8a160f0]

fil/fil0crypt.cc:2122(fil_crypt_rotate_pages)[0x8a165d9]

fil/fil0crypt.cc:2355(fil_crypt_thread)[0x8a16e02]

/lib/i386-linux-gnu/libpthread.so.0(+0x6d4c)[0xb74c7d4c]

/lib/i386-linux-gnu/libc.so.6(clone+0x5e)[0xb72d7ace]

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.

Writing a core file

----------SERVER LOG END-------------