dberr_t BtrBulk::finish(dberr_t): Assertion `err != DB_SUCCESS || btr_validate_index(m_index, __null) == DB_SUCCESS' failed

# 2025-09-17T13:24:09 [1335711] | mariadbd: /data/Server/10.11D/storage/innobase/btr/btr0bulk.cc:1220: dberr_t BtrBulk::finish(dberr_t): Assertion `err != DB_SUCCESS || btr_validate_index(m_index, __null) == DB_SUCCESS' failed.

#0  __pthread_kill_implementation (no_tid=0, signo=6, threadid=140394052912704) at ./nptl/pthread_kill.c:44

#1  __pthread_kill_internal (signo=6, threadid=140394052912704) at ./nptl/pthread_kill.c:78

#2  __GI___pthread_kill (threadid=140394052912704, signo=signo@entry=6) at ./nptl/pthread_kill.c:89

#3  __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26

#4  __GI_abort () at ./stdlib/abort.c:79

#5  __assert_fail_base (fmt="%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion="err != DB_SUCCESS || btr_validate_index(m_index, __null) == DB_SUCCESS", file="/data/Server/10.11D/storage/innobase/btr/btr0bulk.cc", line=1220, 

    function=<optimized out>) at ./assert/assert.c:92

#6  __GI___assert_fail (assertion="err != DB_SUCCESS || btr_validate_index(m_index, __null) == DB_SUCCESS", file="/data/Server/10.11D/storage/innobase/btr/btr0bulk.cc", line=1220, function="dberr_t BtrBulk::finish(dberr_t)")

    at ./assert/assert.c:101

#7  BtrBulk::finish (this=this@entry=, err=DB_SUCCESS) at /data/Server/10.11D/storage/innobase/btr/btr0bulk.cc:1220

#8  row_merge_read_clustered_index (trx=trx@entry=, table=table@entry=, old_table=old_table@entry=, new_table=<optimized out>, new_table@entry=, online=online@entry=true, index=index@entry=, fts_sort_idx=<optimized out>, 

    psort_info=<optimized out>, files=<optimized out>, key_numbers=<optimized out>, n_index=<optimized out>, defaults=<optimized out>, add_v=<optimized out>, col_map=<optimized out>, add_autoinc=<optimized out>, sequence=..., 

    block=<optimized out>, skip_pk_sort=<optimized out>, tmpfd=<optimized out>, stage=<optimized out>, pct_cost=pct_cost@entry=33.333333333333336, crypt_block=<optimized out>, eval_table=<optimized out>, 

    allow_not_null=<optimized out>, col_collate=<optimized out>) at /data/Server/10.11D/storage/innobase/row/row0merge.cc:2825

#9  row_merge_build_indexes (trx=, old_table=, new_table=new_table@entry=, online=true, indexes=, key_numbers=, n_indexes=2, table=, defaults=, col_map=, add_autoinc=18446744073709551615, sequence=..., skip_pk_sort=true, stage=, 

    add_v=, eval_table=, allow_not_null=false, col_collate=) at /data/Server/10.11D/storage/innobase/row/row0merge.cc:4764

#10 ha_innobase::inplace_alter_table (this=, altered_table=, ha_alter_info=) at /data/Server/10.11D/storage/innobase/handler/handler0alter.cc:8972

#11 handler::ha_inplace_alter_table (ha_alter_info=, altered_table=, this=<optimized out>) at /data/Server/10.11D/sql/handler.h:4620

#12 mysql_inplace_alter_table (thd=thd@entry=, table_list=, table=table@entry=, altered_table=altered_table@entry=, ha_alter_info=ha_alter_info@entry=, target_mdl_request=target_mdl_request@entry=, ddl_log_state=, 

    trigger_param=, alter_ctx=, partial_alter=false, start_alter_id=0, if_exists=false) at /data/Server/10.11D/sql/sql_table.cc:8128

#13 mysql_alter_table (thd=thd@entry=, new_db=new_db@entry=, new_name=<optimized out>, create_info=create_info@entry=, table_list=<optimized out>, table_list@entry=, recreate_info=recreate_info@entry=, 

    alter_info=<optimized out>, order_num=<optimized out>, order=<optimized out>, ignore=<optimized out>, if_exists=<optimized out>) at /data/Server/10.11D/sql/sql_table.cc:11404

#14 Sql_cmd_alter_table::execute (this=<optimized out>, thd=) at /data/Server/10.11D/sql/sql_alter.cc:688

#15 mysql_execute_command (thd=thd@entry=, is_called_from_prepared_stmt=is_called_from_prepared_stmt@entry=false) at /data/Server/10.11D/sql/sql_parse.cc:6165

#16 mysql_parse (thd=thd@entry=, rawbuf=<optimized out>, length=<optimized out>, parser_state=parser_state@entry=) at /data/Server/10.11D/sql/sql_parse.cc:8180

#17 dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=, packet=packet@entry="ALTER TABLE `t2` ENCRYPTION_KEY_ID=6 /* E_R Thread5 QNO 11 CON_ID 22 */ ", packet_length=packet_length@entry=72, 

    blocking=blocking@entry=true) at /data/Server/10.11D/sql/sql_parse.cc:1906

#18 do_command (thd=thd@entry=, blocking=blocking@entry=true) at /data/Server/10.11D/sql/sql_parse.cc:1419

#19 do_handle_one_connection (connect=<optimized out>, connect@entry=, put_in_cache=put_in_cache@entry=true) at /data/Server/10.11D/sql/sql_connect.cc:1475

#20 handle_one_connection (arg=) at /data/Server/10.11D/sql/sql_connect.cc:1387

#21 start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442

#22 clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100