[MDEV-41290] ib_uint64_t mach_read_next_much_compressed(const byte **): Assertion `val > 0x7F' failed - Jira

Details

Type: Bug
Status: Open (View Workflow)
Priority: Major
Resolution: Unresolved
Affects Version/s: 13.0, 13.1
Fix Version/s: 13.0, 13.1
Component/s: Storage Engine - InnoDB
Labels:
- regression-13.0

Bug Category:
Can result in hang or crash

Description

  --source include/have_innodb.inc

  --source include/have_sequence.inc

  --source include/have_debug.inc

  CREATE TABLE t1 (a INT PRIMARY KEY, b INT, KEY(b)) ENGINE=InnoDB STATS_PERSISTENT=0;

  CREATE TABLE t2 (a INT PRIMARY KEY, c VARBINARY(4000)) ENGINE=InnoDB STATS_PERSISTENT=0;

  INSERT INTO t1 VALUES (1,1),(2,2);

  INSERT INTO t2 SELECT seq, REPEAT(x'803F', 2000) FROM seq_1_to_12;

  UPDATE t1 SET b=b+1;

  --connect con1,localhost,root

  BEGIN;

  UPDATE t1 SET b=b+1;

  --connection default

  SET GLOBAL innodb_max_purge_lag_wait=0;

  UPDATE t2 SET c='x' WHERE a<=4;

  UPDATE t2 SET c='x' WHERE a BETWEEN 5 AND 8;

  UPDATE t2 SET c='x' WHERE a>8;

  --let $shutdown_timeout= 0

  --let $restart_parameters= --innodb-log-recovery-target=18446744073709551615

  --source include/restart_mysqld.inc

  --disconnect con1

  CHECK TABLE t1 EXTENDED;

  --let $shutdown_timeout=

  --let $restart_parameters=

  --source include/restart_mysqld.inc

  DROP TABLE t1, t2;

Leads to:

INFO: no cores found at data*/core nor at node*/core, and no *SAN or Valgrind report found in the error log

CS 13.0.2 b2c4e675049e23ce8c7346985f40840fcd4e583f (Debug, Clang 22.1.8-20260621) Build 09/09/2026
mariadbd: /test/13.0_dbg/storage/innobase/include/mach0data.inl:517: ib_uint64_t mach_read_next_much_compressed(const byte **): Assertion `val > 0x7F' failed.

CS 13.0.2 b2c4e675049e23ce8c7346985f40840fcd4e583f (Debug, Clang 22.1.8-20260621) Build 09/09/2026
Core was generated by `/test/MD090926-mariadb-13.0.2-linux-x86_64-dbg/bin/mariadbd --defaults-group-su'.
Program terminated with signal SIGABRT, Aborted.
#0 __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:44

[Current thread is 1 (LWP 1074821)]
(gdb) bt
#0 __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:44
#1 __pthread_kill_internal (signo=6, threadid=<optimized out>)at ./nptl/pthread_kill.c:78
#2 __GI___pthread_kill (threadid=<optimized out>, signo=signo@entry=6)at ./nptl/pthread_kill.c:89
#3 0x000073ec9504527e in __GI_raise (sig=sig@entry=6)at ../sysdeps/posix/raise.c:26
#4 0x000073ec950288ff in __GI_abort () at ./stdlib/abort.c:79
#5 0x000073ec9502881b in __assert_fail_base (fmt=0x73ec951d1208 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x581c23d85f31 "val > 0x7F", file=file@entry=0x581c23d57ad6 "/test/13.0_dbg/storage/innobase/include/mach0data.inl", line=line@entry=517, function=function@entry=0x581c23d9487d "ib_uint64_t mach_read_next_much_compressed(const byte **)") at ./assert/assert.c:96
#6 0x000073ec9503b517 in __assert_fail (assertion=0x581c23d85f31 "val > 0x7F", file=0x581c23d57ad6 "/test/13.0_dbg/storage/innobase/include/mach0data.inl", line=517, function=0x581c23d9487d "ib_uint64_t mach_read_next_much_compressed(const byte **)") at ./assert/assert.c:105
#7 0x0000581c236688a2 in mach_read_next_much_compressed (b=0x73ec765702a0)at include/mach0data.inl:517
#8 0x0000581c23668741 in trx_undo_rec_get_pars (undo_rec=0x6bec700ac139 "?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200"..., type=0x73ec76570667 "\017@\aWv\354s", cmpl_info=0x73ec76570666 "\003\017@\aWv\354s", updated_extern=0x73ec76570665, undo_no=0x73ec76570658, table_id=0x73ec76570650)at /test/13.0_dbg/storage/innobase/trx/trx0rec.cc:519
#9 0x0000581c23670d60 in trx_undo_prev_version (rec=0x6bebac02af0e "\200", index=0x581c62d73a48, offsets=0x6bebac008268, heap=0x6bebac02b240, old_vers=0x73ec76570c28, check=@0x73ec76570740: {latch = purge_sys_t::view_guard::END_VIEW}, v_status=0, v_heap=0x0, vrow=0x0, undo_rec=0x6bec700ac139 "?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200?\200"...)at /test/13.0_dbg/storage/innobase/trx/trx0rec.cc:2221
#10 0x0000581c23670983 in trx_undo_prev_version_build (rec=0x6bebac02af0e "\200", index=0x581c62d73a48, offsets=0x6bebac008268, heap=0x6bebac02b240, old_vers=0x73ec76570c28, mtr=0x73ec76571468, v_status=0, v_heap=0x0, vrow=0x0)at /test/13.0_dbg/storage/innobase/trx/trx0rec.cc:2198
#11 0x0000581c23615ebc in row_check_index (prebuilt=0x6bebac0298a8, n_rows=0x73ec765718b8)at /test/13.0_dbg/storage/innobase/row/row0sel.cc:6632
#12 0x0000581c233eef20 in ha_innobase::check (this=0x6bebac032dd0, thd=0x6bebac000d60, check_opt=0x6bebac006638)at /test/13.0_dbg/storage/innobase/handler/ha_innodb.cc:15573
#13 0x0000581c2300abf9 in handler::ha_check (this=0x6bebac032dd0, thd=0x6bebac000d60, check_opt=0x6bebac006638)at /test/13.0_dbg/sql/handler.cc:5710
#14 0x0000581c22ddd18a in mysql_admin_table (thd=0x6bebac000d60, tables=0x6bebac019570, check_opt=0x6bebac006638, operator_name=0x581c244de068 <msg_check>, lock_type=TL_READ_NO_INSERT, org_open_for_modify=false, no_errors_from_open=false, extra_open_options=32, prepare_func=0x0, operator_func=(int (handler::)(class handler const, class THD , HA_CHECK_OPT )) 0x581c2300aa60 <handler::ha_check(THD, st_ha_check_opt)>, view_operator_func=0x581c22d59260 <view_check(THD, TABLE_LIST, st_ha_check_opt*)>, is_cmd_replicated=false) at /test/13.0_dbg/sql/sql_admin.cc:949
#15 0x0000581c22ddfc03 in Sql_cmd_check_table::execute (this=0x6bebac019cc0, thd=0x6bebac000d60) at /test/13.0_dbg/sql/sql_admin.cc:1702
#16 0x0000581c22c01c06 in mysql_execute_command (thd=0x6bebac000d60, is_called_from_prepared_stmt=false) at /test/13.0_dbg/sql/sql_parse.cc:5905
#17 0x0000581c22bf2d18 in mysql_parse (thd=0x6bebac000d60, rawbuf=0x6bebac019480 "CHECK TABLE t1 EXTENDED", length=23, parser_state=0x73ec765749f0) at /test/13.0_dbg/sql/sql_parse.cc:7943
#18 0x0000581c22bf046e in dispatch_command (command=COM_QUERY, thd=0x6bebac000d60, packet=0x6bebac00b691 "", packet_length=23, blocking=true) at /test/13.0_dbg/sql/sql_parse.cc:1903
#19 0x0000581c22bf379a in do_command (thd=0x6bebac000d60, blocking=true)at /test/13.0_dbg/sql/sql_parse.cc:1437
#20 0x0000581c22dc575e in do_handle_one_connection (connect=0x581c62f1b5f0, put_in_cache=true) at /test/13.0_dbg/sql/sql_connect.cc:1514
#21 0x0000581c22dc5541 in handle_one_connection (arg=0x581c62f1b5f0)at /test/13.0_dbg/sql/sql_connect.cc:1426
#22 0x000073ec9509cb84 in start_thread (arg=<optimized out>)at ./nptl/pthread_create.c:447
#23 0x000073ec95129ecc in clone3 ()at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Bug Detection Matrix
Rel o/d Build Commit UniqueID observed
CS 10.11 dbg 090926 2753b5919a10abd32ba822877c6a1cbf602d3748 No bug found
CS 10.11 opt 090926 2753b5919a10abd32ba822877c6a1cbf602d3748 Assert: no error log(s) found - exiting
CS 11.4 dbg 090926 42038e1145dd43b3910055c364fb720a8a152d61 No bug found
CS 11.4 opt 090926 42038e1145dd43b3910055c364fb720a8a152d61 Assert: no error log(s) found - exiting
CS 11.8 dbg 090926 e2e060ce3d8c3ce11b6c7ba28ced0f1a30c50a54 No bug found
CS 11.8 opt 090926 e2e060ce3d8c3ce11b6c7ba28ced0f1a30c50a54 Assert: no error log(s) found - exiting
CS 12.3 dbg 090926 e9f84a1fdf7093191e55b55dc14b08b9d4ebaa20 No bug found
CS 12.3 opt 090926 e9f84a1fdf7093191e55b55dc14b08b9d4ebaa20 Assert: no error log(s) found - exiting
CS 13.0 dbg 090926 b2c4e675049e23ce8c7346985f40840fcd4e583f val > 0x7F\|SIGABRT\|mach_read_next_much_compressed\|trx_undo_rec_get_pars\|trx_undo_prev_version\|trx_undo_prev_version_build
CS 13.0 opt 090926 b2c4e675049e23ce8c7346985f40840fcd4e583f Assert: no error log(s) found - exiting
CS 13.1 dbg 090926 02c842c30dcb05a962eaac58c69920e6be3369cf val > 0x7F\|SIGABRT\|mach_read_next_much_compressed\|trx_undo_rec_get_pars\|trx_undo_prev_version\|trx_undo_prev_version_build
CS 13.1 opt 090926 02c842c30dcb05a962eaac58c69920e6be3369cf Assert: no error log(s) found - exiting
ES 10.6 dbg 090926 aa3fb9800c358182ee2a1f8cca8ffbdd6d0a37eb No bug found
ES 10.6 opt 090926 aa3fb9800c358182ee2a1f8cca8ffbdd6d0a37eb Assert: no error log(s) found - exiting
ES 11.4 dbg 090926 32807340954440071ca8ae8e2de51fb180d134c6 No bug found
ES 11.4 opt 090926 32807340954440071ca8ae8e2de51fb180d134c6 Assert: no error log(s) found - exiting
ES 11.8 dbg 090926 c4af6f687a2dd983072457429aa2294f11957650 No bug found
ES 11.8 opt 090926 c4af6f687a2dd983072457429aa2294f11957650 Assert: no error log(s) found - exiting
ES 12.3 dbg 090926 c3bd5108d81f19e33efb93f7b6ae971293732fd0 No bug found
ES 12.3 opt 090926 c3bd5108d81f19e33efb93f7b6ae971293732fd0 Assert: no error log(s) found - exiting

ib_uint64_t mach_read_next_much_compressed(const byte **): Assertion `val > 0x7F' failed

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