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10.2 08d0a2a8cf
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mysqld: /data/src/10.2/mysys/my_seek.c:53: my_seek: Assertion `pos != (~(my_off_t) 0)' failed.
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180904 23:25:35 [ERROR] mysqld got signal 6 ;
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#7 0x00007f99e9045ee2 in __assert_fail () from /lib/x86_64-linux-gnu/libc.so.6
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#8 0x00005638218aeb9d in my_seek (fd=451, pos=18446744073709551615, whence=0, MyFlags=0) at /data/src/10.2/mysys/my_seek.c:53
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#9 0x000056382181a598 in inline_mysql_file_seek (src_file=0x563821c17030 "/data/src/10.2/storage/myisam/mi_dynrec.c", src_line=1911, file=451, pos=18446744073709551615, whence=0, flags=0) at /data/src/10.2/include/mysql/psi/mysql_file.h:1229
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#10 0x000056382181fb00 in _mi_get_block_info (info=0x7f99e80ffd60, file=451, filepos=18446744073709551615) at /data/src/10.2/storage/myisam/mi_dynrec.c:1911
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#11 0x000056382181b423 in unlink_deleted_block (info=0x7f996cfe37d0, block_info=0x7f99e80ffff0) at /data/src/10.2/storage/myisam/mi_dynrec.c:461
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#12 0x000056382181c93b in _mi_write_part_record (info=0x7f996cfe37d0, filepos=1156, length=115, next_filepos=388, record=0x7f99e8100090, reclength=0x7f99e8100088, flag=0x7f99e81000ac) at /data/src/10.2/storage/myisam/mi_dynrec.c:732
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#13 0x000056382181b007 in write_dynamic_record (info=0x7f996cfe37d0, record=0x7f996d031af8 "_<\360\004test\002sp\002\002sp\001\001\002\002\t", reclength=111) at /data/src/10.2/storage/myisam/mi_dynrec.c:371
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#14 0x000056382181ada0 in _mi_write_blob_record (info=0x7f996cfe37d0, record=0x7f996cfec6a8 "\360test", ' ' <repeats 188 times>, "sp "...) at /data/src/10.2/storage/myisam/mi_dynrec.c:295
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#15 0x000056382183f165 in mi_write (info=0x7f996cfe37d0, record=0x7f996cfec6a8 "\360test", ' ' <repeats 188 times>, "sp "...) at /data/src/10.2/storage/myisam/mi_write.c:146
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#16 0x00005638217fb69d in ha_myisam::write_row (this=0x7f996cfebf28, buf=0x7f996cfec6a8 "\360test", ' ' <repeats 188 times>, "sp "...) at /data/src/10.2/storage/myisam/ha_myisam.cc:922
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#17 0x0000563821164671 in handler::ha_write_row (this=0x7f996cfebf28, buf=0x7f996cfec6a8 "\360test", ' ' <repeats 188 times>, "sp "...) at /data/src/10.2/sql/handler.cc:5959
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#18 0x00005638212ccbdd in sp_create_routine (thd=0x7f996c000b00, type=TYPE_ENUM_PROCEDURE, sp=0x7f996cfde388) at /data/src/10.2/sql/sp.cc:1262
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#19 0x0000563820ee81ca in mysql_execute_command (thd=0x7f996c000b00) at /data/src/10.2/sql/sql_parse.cc:5711
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#20 0x0000563820eeeb4c in mysql_parse (thd=0x7f996c000b00, rawbuf=0x7f996c010fb8 "CREATE PROCEDURE sp() BEGIN END", length=31, parser_state=0x7f99e8101250, is_com_multi=false, is_next_command=false) at /data/src/10.2/sql/sql_parse.cc:8009
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#21 0x0000563820edc5ca in dispatch_command (command=COM_QUERY, thd=0x7f996c000b00, packet=0x7f996c0191e1 "CREATE PROCEDURE sp() BEGIN END", packet_length=31, is_com_multi=false, is_next_command=false) at /data/src/10.2/sql/sql_parse.cc:1824
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#22 0x0000563820edaf2d in do_command (thd=0x7f996c000b00) at /data/src/10.2/sql/sql_parse.cc:1378
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#23 0x000056382102c7c8 in do_handle_one_connection (connect=0x5638250e5580) at /data/src/10.2/sql/sql_connect.cc:1335
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#24 0x000056382102c555 in handle_one_connection (arg=0x5638250e5580) at /data/src/10.2/sql/sql_connect.cc:1241
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#25 0x00007f99ead1c494 in start_thread (arg=0x7f99e8102700) at pthread_create.c:333
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#26 0x00007f99e910293f in clone () from /lib/x86_64-linux-gnu/libc.so.6
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Query (0x7f996c010fb8): CREATE PROCEDURE sp() BEGIN END
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Connection ID (thread ID): 9
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Status: NOT_KILLED
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The failure happens after a crash recovery, when the system table (in this case mysql.proc) is corrupted. Apparently it's a debug assertion only. A non-debug build produces an error instead:
MariaDB [test]> CREATE PROCEDURE sp() BEGIN END;
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ERROR 126 (HY000): Index for table './mysql/proc.MYI' is corrupt; try to repair it
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MariaDB [test]> show warnings;
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+-------+------+------------------------------------------------------------------+
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| Level | Code | Message |
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+-------+------+------------------------------------------------------------------+
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| Error | 145 | Table './mysql/proc' is marked as crashed and should be repaired |
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| Error | 1194 | Table 'proc' is marked as crashed and should be repaired |
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| Error | 1034 | 1 client is using or hasn't closed the table properly |
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| Error | 1034 | Found 1156 deleted space in delete link chain. Should be 1440 |
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| Error | 1034 | Found 4 deleted rows in delete link chain. Should be 5 |
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| Error | 1034 | record delete-link-chain corrupted |
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| Error | 1034 | Number of rows changed from 3 to 2 |
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| Error | 126 | Index for table './mysql/proc.MYI' is corrupt; try to repair it |
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| Error | 1304 | PROCEDURE sp already exists |
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+-------+------+------------------------------------------------------------------+
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9 rows in set (0.00 sec)
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REPAIR TABLE helps, both for non-debug error and debug failure.
To reproduce, unpack the attached data.tar.gz, start a 10.2 server on it (all default options will do), and run
CREATE PROCEDURE sp() BEGIN END;
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or alike.
Note:
It would be helpful for testing purposes if the assertion failure got fixed, as it affects various crash-recovery scenarios, but I understand that it's not a high-priority task, since 10.4 switches system tables to Aria, and whatever failures we get out of it are going to be different.
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data.tar.gz