use-of-uninitialized-value in rollback_inplace_alter_table(Alter_inplace_info*, TABLE const*, row_prebuilt_t*)

# 2026-07-08T23:09:33 [3070108] | SUMMARY: MemorySanitizer: use-of-uninitialized-value /test/10.11_dbg_msan/storage/innobase/handler/handler0alter.cc:9378:22 in rollback_inplace_alter_table(Alter_inplace_info*, TABLE const*, row_prebuilt_t*)

# 2026-07-08T23:09:33 [3070108] | 2026-07-08 23:07:15 30 [ERROR] InnoDB: Cannot add field `col_text_copy` in table `test`.`t4` because after adding it, the row size is 2144 which is greater than maximum allowed size (1979 bytes) for a record on index leaf page.

# 2026-07-08T23:09:33 [3070108] | ==3079868==WARNING: MemorySanitizer: use-of-uninitialized-value

# 2026-07-08T23:09:33 [3070108] | 2026-07-08 23:07:20 0 [Note] InnoDB: Resized log to 64.000MiB; start LSN=856576

# 2026-07-08T23:09:33 [3070108] |     #0 0x5f2eddb43199 in rollback_inplace_alter_table(Alter_inplace_info*, TABLE const*, row_prebuilt_t*) /test/10.11_dbg_msan/storage/innobase/handler/handler0alter.cc:9378:22

# 2026-07-08T23:09:33 [3070108] |     #1 0x5f2edcf51cf0 in mysql_inplace_alter_table(THD*, TABLE_LIST*, TABLE*, TABLE*, Alter_inplace_info*, MDL_request*, st_ddl_log_state*, TRIGGER_RENAME_PARAM*, Alter_table_ctx*, bool&, unsigned long long&, bool) /test/10.11_dbg_msan/sql/sql_table.cc:8295:16

# 2026-07-08T23:09:33 [3070108] |     #2 0x5f2edcf3c37c in mysql_alter_table(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, TABLE_LIST*, Recreate_info*, Alter_info*, unsigned int, st_order*, bool, bool) /test/10.11_dbg_msan/sql/sql_table.cc:11462:16

# 2026-07-08T23:09:33 [3070108] |     #3 0x5f2edd11f87a in Sql_cmd_alter_table::execute(THD*) /test/10.11_dbg_msan/sql/sql_alter.cc:688:11

# 2026-07-08T23:09:33 [3070108] |     #4 0x5f2edcc46079 in mysql_execute_command(THD*, bool) /test/10.11_dbg_msan/sql/sql_parse.cc:6199:26

# 2026-07-08T23:09:33 [3070108] |     #5 0x5f2edcc3a6ef in mysql_parse(THD*, char*, unsigned int, Parser_state*) /test/10.11_dbg_msan/sql/sql_parse.cc:8219:18

# 2026-07-08T23:09:33 [3070108] |     #6 0x5f2edcc34126 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) /test/10.11_dbg_msan/sql/sql_parse.cc:1924:7

# 2026-07-08T23:09:33 [3070108] |     #7 0x5f2edcc3b1ae in do_command(THD*, bool) /test/10.11_dbg_msan/sql/sql_parse.cc:1434:17

# 2026-07-08T23:09:33 [3070108] |     #8 0x5f2edd10722c in do_handle_one_connection(CONNECT*, bool) /test/10.11_dbg_msan/sql/sql_connect.cc:1482:11

# 2026-07-08T23:09:33 [3070108] |     #9 0x5f2edd106bb6 in handle_one_connection /test/10.11_dbg_msan/sql/sql_connect.cc:1394:5

# 2026-07-08T23:09:33 [3070108] |     #10 0x79b9c709caa3 in start_thread nptl/pthread_create.c:447:8

# 2026-07-08T23:09:33 [3070108] |     #11 0x79b9c7129a63 in clone misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:100

# 2026-07-08T23:09:33 [3070108] | 

# 2026-07-08T23:09:33 [3070108] |   Member fields were destroyed

# 2026-07-08T23:09:33 [3070108] |     #0 0x5f2edc1696b1 in __sanitizer_dtor_callback_fields (/data/Server_bin/MSAN_MD080726-mariadb-10.11.19-linux-x86_64-dbg/bin/mariadbd+0xff86b1) (BuildId: 9ac4fa3f4478741e712ebd6016da11b676c29367)

# 2026-07-08T23:09:33 [3070108] |     #1 0x5f2eddb51889 in dict_v_col_t::~dict_v_col_t() /test/10.11_dbg_msan/storage/innobase/include/dict0mem.h:735:14

# 2026-07-08T23:09:33 [3070108] |     #2 0x5f2eddb51889 in dict_v_col_t::~dict_v_col_t() /test/10.11_dbg_msan/storage/innobase/include/dict0mem.h:733:8

# 2026-07-08T23:09:33 [3070108] |     #3 0x5f2eddb51889 in ha_innobase_inplace_ctx::~ha_innobase_inplace_ctx() /test/10.11_dbg_msan/storage/innobase/handler/handler0alter.cc:1203:19

# 2026-07-08T23:09:33 [3070108] | 

# 2026-07-08T23:09:33 [3070108] | SUMMARY: MemorySanitizer: use-of-uninitialized-value /test/10.11_dbg_msan/storage/innobase/handler/handler0alter.cc:9378:22 in rollback_inplace_alter_table(Alter_inplace_info*, TABLE const*, row_prebuilt_t*)

# $RQG_HOME/rqg.pl \

# --gendata=conf/mariadb/table_stress.zz \

# --gendata_sql=conf/mariadb/table_stress.sql \

# --grammar=conf/mariadb/table_stress_innodb_nocopy1.yy \

# --redefine=conf/mariadb/redefine_innodb_log_archive.yy \

# --mysqld=--loose-innodb_log_archive=ON \

# --mysqld=--loose-innodb_log_file_size=16M \

# --reporters=LogArchiveRecovery \

# --mysqld=--loose-innodb_lock_schedule_algorithm=fcfs \

# --mysqld=--loose-idle_write_transaction_timeout=0 \

# --mysqld=--loose-idle_transaction_timeout=0 \

# --mysqld=--loose-idle_readonly_transaction_timeout=0 \

# --mysqld=--connect_timeout=60 \

# --mysqld=--interactive_timeout=28800 \

# --mysqld=--slave_net_timeout=60 \

# --mysqld=--net_read_timeout=30 \

# --mysqld=--net_write_timeout=60 \

# --mysqld=--loose-table_lock_wait_timeout=50 \

# --mysqld=--wait_timeout=28800 \

# --no_mask \

# --queries=10000000 \

# --seed=random \

# --reporters=None \

# --reporters=ErrorLog \

# --reporters=Deadlock \

# --validators=None \

# --mysqld=--log_output=none \

# --mysqld=--log_bin_trust_function_creators=1 \

# --mysqld=--loose-debug_assert_on_not_freed_memory=0 \

# --engine=InnoDB \

# --restart_timeout=240 \

# --mysqld=--plugin-load-add=file_key_management.so \

# --mysqld=--loose-file-key-management-filename=$RQG_HOME/conf/mariadb/encryption_keys.txt \

# --mysqld=--plugin-load-add=provider_lzo.so \

# --mysqld=--plugin-load-add=provider_bzip2.so \

# --mysqld=--plugin-load-add=provider_lzma.so \

# --mysqld=--plugin-load-add=provider_snappy.so \

# --mysqld=--plugin-load-add=provider_lz4.so \

# --mysqld=--loose-innodb_compression_level=1 \

# --duration=300 \

# --mysqld=--loose-innodb_fatal_semaphore_wait_threshold=300 \

# --mysqld=--loose-innodb_data_file_path=ibdata1:1M:autoextend:autoshrink \

# --redefine=conf/mariadb/redefine_innodb_log_write_ahead_size.yy \

# --mysqld=--lock-wait-timeout=86400 \

# --mysqld=--innodb-lock-wait-timeout=50 \

# --mysqld=--sql_mode=STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION \

# --mysqld=--loose-innodb_read_only_compressed=OFF \

# --mysqld=--innodb_stats_persistent=on \

# --mysqld=--innodb_adaptive_hash_index=off \

# --mysqld=--innodb_random_read_ahead=OFF \

# --mysqld=--innodb_log_buffer_size=2M \

# --mysqld=--log-bin \

# --mysqld=--sync-binlog=1 \

# --mysqld=--loose-innodb_evict_tables_on_commit_debug=on \

# --threads=6 \

# --rr=rr record --wait \

# --mysqld=--innodb_undo_log_truncate=OFF \

# --mysqld=--innodb_undo_tablespaces=0 \

# --mysqld=--innodb_rollback_on_timeout=ON \

# --mysqld=--innodb_page_size=4K \

# --mysqld=--innodb-buffer-pool-size=256M \

# --vardir_type=slow \

# --no_mask \

# --batch \

# --basedir1=/Server_bin/MSAN_MD080726-mariadb-10.11.19-linux-x86_64-dbg \

# --basedir2=/Server_bin/MSAN_MD080726-mariadb-10.11.19-linux-x86_64-dbg \

# --script_debug=_nix_ \

# --major_runid=1783576491 \

# --minor_runid=107