[MDEV-22451] SIGSEGV in __memmove_avx_unaligned_erms/memcpy from _my_b_write on CREATE after RESET MASTER Created: 2020-05-04  Updated: 2020-05-27  Resolved: 2020-05-20

Status: Closed
Project: MariaDB Server
Component/s: Admin statements, Replication
Affects Version/s: 10.1, 10.2, 10.3, 10.4, 10.5
Fix Version/s: 10.5.4, 10.1.46, 10.2.33, 10.3.24, 10.4.14

Type: Bug Priority: Major
Reporter: Roel Van de Paar Assignee: Sujatha Sivakumar (Inactive)
Resolution: Fixed Votes: 0
Labels: sprint-current-week

Issue Links:
Duplicate
duplicates MDEV-17977 FLUSH MASTER fails with ER_NO_UNIQUE_... Stalled
Relates
relates to MDEV-17977 FLUSH MASTER fails with ER_NO_UNIQUE_... Stalled

 Description   

# mysqld options required for replay: --log-bin 
RESET MASTER TO 5000000000;
CREATE DATABASE a;

Leads to:

10.5.3 f544a712c8a2ef3f3ecba80cb2782b1839fb36ab

Core was generated by `/test/MD010520-mariadb-10.5.3-linux-x86_64-opt/bin/mysqld --no-defaults --core-'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  __pthread_kill (threadid=<optimized out>, signo=signo@entry=11)
    at ../sysdeps/unix/sysv/linux/pthread_kill.c:57
[Current thread is 1 (Thread 0x7f5590352700 (LWP 1193316))]
(gdb) bt
#0  __pthread_kill (threadid=<optimized out>, signo=signo@entry=11) at ../sysdeps/unix/sysv/linux/pthread_kill.c:57
#1  0x0000556d52e73ac7 in my_write_core (sig=sig@entry=11) at /test/10.5_opt/mysys/stacktrace.c:518
#2  0x0000556d528357ca in handle_fatal_signal (sig=11) at /test/10.5_opt/sql/signal_handler.cc:329
#3  <signal handler called>
#4  __memmove_avx_unaligned_erms () at ../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:371
#5  0x0000556d52e531c1 in memcpy (__len=18446604068837093352, __src=0x7f55903503b0, __dest=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/string_fortified.h:34
#6  _my_b_write (info=0x556d53a002e0 <mysql_bin_log+800>, Buffer=0x7f55903503b0 "\246ۯ^\242d", Count=Count@entry=19) at /test/10.5_opt/mysys/mf_iocache.c:607
#7  0x0000556d52e53a7c in my_b_write (Count=19, Buffer=<optimized out>, info=<optimized out>) at /test/10.5_opt/include/my_sys.h:537
#8  my_b_safe_write (info=<optimized out>, Buffer=<optimized out>, Count=Count@entry=19) at /test/10.5_opt/mysys/mf_iocache.c:1860
#9  0x0000556d5292ef56 in Log_event_writer::write_internal (this=0x7f55903504e0, pos=<optimized out>, len=19) at /test/10.5_opt/sql/log_event_server.cc:802
#10 0x0000556d52935a98 in Log_event_writer::write_header (this=0x7f55903504e0, pos=pos@entry=0x7f55903503b0 "\246ۯ^\242d", len=len@entry=19) at /test/10.5_opt/sql/log_event_server.cc:896
#11 0x0000556d52936095 in Log_event::write_header (this=this@entry=0x7f55903505a0, event_data_length=event_data_length@entry=19) at /test/10.5_opt/sql/log_event_server.cc:989
#12 0x0000556d52936cfc in Gtid_log_event::write (this=0x7f55903505a0) at /test/10.5_opt/sql/log_event_server.cc:3340
#13 0x0000556d529123f9 in Log_event_writer::write (ev=0x7f55903505a0, this=0x7f55903504e0) at /test/10.5_opt/sql/log_event.h:5736
#14 MYSQL_BIN_LOG::write_event (this=this@entry=0x556d539fffc0 <mysql_bin_log>, ev=ev@entry=0x7f55903505a0, cache_data=cache_data@entry=0x0, file=file@entry=0x556d53a002e0 <mysql_bin_log+800>) at /test/10.5_opt/sql/log.cc:5447
#15 0x0000556d5291340b in MYSQL_BIN_LOG::write_event (ev=0x7f55903505a0, this=0x556d539fffc0 <mysql_bin_log>) at /test/10.5_opt/sql/log.h:821
#16 MYSQL_BIN_LOG::write_gtid_event (this=this@entry=0x556d539fffc0 <mysql_bin_log>, thd=thd@entry=0x7f5556812018, standalone=standalone@entry=true, is_transactional=is_transactional@entry=false, commit_id=commit_id@entry=0) at /test/10.5_opt/sql/log.cc:6279
#17 0x0000556d52922ea8 in MYSQL_BIN_LOG::write (this=0x556d539fffc0 <mysql_bin_log>, event_info=event_info@entry=0x7f5590350ba0, with_annotate=with_annotate@entry=0x0) at /test/10.5_opt/sql/log.cc:6585
#18 0x0000556d52601236 in mysql_create_db_internal (thd=0x7f5556812018, db=0x7f5556816b18, options=..., create_info=create_info@entry=0x7f5590350f30, silent=silent@entry=false) at /test/10.5_opt/sql/sql_db.cc:745
#19 0x0000556d52601529 in mysql_create_db (thd=thd@entry=0x7f5556812018, db=db@entry=0x7f5556816b18, options=..., create_info=create_info@entry=0x7f5556817310) at /test/10.5_opt/sql/sql_db.cc:826
#20 0x0000556d52640358 in mysql_execute_command (thd=thd@entry=0x7f5556812018) at /test/10.5_opt/sql/sql_parse.cc:5093
#21 0x0000556d5264722c in mysql_parse (thd=0x7f5556812018, rawbuf=<optimized out>, length=17, parser_state=0x7f55903514d0, is_com_multi=<optimized out>, is_next_command=<optimized out>) at /test/10.5_opt/sql/sql_parse.cc:7957
#22 0x0000556d5263c855 in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x7f5556812018, packet=packet@entry=0x7f555683a019 "CREATE DATABASE a", packet_length=packet_length@entry=17, is_com_multi=is_com_multi@entry=false, is_next_command=is_next_command@entry=false) at /test/10.5_opt/sql/sql_parse.cc:1839
#23 0x0000556d5263aae6 in do_command (thd=0x7f5556812018) at /test/10.5_opt/sql/sql_parse.cc:1358
#24 0x0000556d5272f29e in do_handle_one_connection (connect=<optimized out>, connect@entry=0x7f558e032ad8, put_in_cache=put_in_cache@entry=true) at /test/10.5_opt/sql/sql_connect.cc:1422
#25 0x0000556d5272f444 in handle_one_connection (arg=arg@entry=0x7f558e032ad8) at /test/10.5_opt/sql/sql_connect.cc:1319
#26 0x0000556d52a9b53a in pfs_spawn_thread (arg=0x7f558e04b018) at /test/10.5_opt/storage/perfschema/pfs.cc:2201
#27 0x00007f558f7c46db in start_thread (arg=0x7f5590352700) at pthread_create.c:463
#28 0x00007f558ebc288f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Bug confirmed present in:
MariaDB: 10.1.45 (dbg), 10.1.45 (opt), 10.2.32 (dbg), 10.2.32 (opt), 10.3.23 (dbg), 10.3.23 (opt), 10.4.13 (dbg), 10.4.13 (opt), 10.5.2 (dbg), 10.5.2 (opt), 10.5.3 (dbg), 10.5.3 (opt)

Bug confirmed not present in:

MySQL: 5.5.62 (dbg), 5.5.62 (opt), 5.6.47 (dbg), 5.6.47 (opt), 5.7.29 (dbg), 5.7.29 (opt), 8.0.19 (dbg), 8.0.19 (opt)

Looks a lot like MDEV-17977, though that testcase seems to not crash 10.5.3.



 Comments   
Comment by Andrei Elkin [ 2020-05-04 ]

sujatha.sivakumar Let's try to remove it out of sight the soonest. Mared with current_sprint from that purpose.

Comment by Sujatha Sivakumar (Inactive) [ 2020-05-12 ]

Hello Andrei,

Please review the changes for MDEV-22451.

https://github.com/MariaDB/server/commit/23cb7b481fa1696f6926b9996ab9f649b39f898b
BuildBot Testing: http://buildbot.askmonty.org/buildbot/grid?category=main&branch=bb-10.1-sujatha

Thank you.

Comment by Andrei Elkin [ 2020-05-15 ]

The patch looks good. Just the test part can be improved, as commented on GITHUB.

Comment by Sujatha Sivakumar (Inactive) [ 2020-05-20 ]

Patches for higher version require minor changes.

10.2 Patch: https://github.com/MariaDB/server/commit/447db9cdc4d0e2860e4357dac59d7851fd0ffa58

10.3 Patch: https://github.com/MariaDB/server/commit/1f728a357e17904fbdfa043d12ce63240eccb7c9

10.4: https://github.com/MariaDB/server/commit/bd5128f8a322075c676415e20d2952e23e0a47e4

Comment by Roel Van de Paar [ 2020-05-27 ]

Filter removed from runs

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