[#MDEV-18038] Assertion failure in innodb.undo_truncate_recover: "pad_len >= len || i * 512U >= len - pad_len || log_block_get_hdr_no( buf + i * 512U) == log_block_get_hdr

mtr -mem -force -max-test-fail=9999 -suite=innodb -par=5 innodb.undo_truncate_recover{,,,} -repeat=100

And here is actually two failures. One is Missing MLOG_CHECKPOINT at 24666925 between the checkpoint 23868993 and the end 24666925 similar to https://jira.mariadb.org/browse/MDEV-13080

#4  __GI_raise (sig=sig@entry=6) at raise.c:50

#5  __GI_abort () at abort.c:79

#6  __assert_fail_base (fmt=0x7ffa583e9858 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=0x16a4106 "pad_len >= len || i * 512U >= len - pad_len || log_block_get_hdr_no( buf + i * 512U) == log_block_get_hdr_no(buf) + i", file=0x16a3080 "/work/mariadb/storage/innobase/log/log0log.cc", line=839, function=<optimized out>) at assert.c:92

#7  __GI___assert_fail (assertion=0x16a4106 "pad_len >= len || i * 512U >= len - pad_len || log_block_get_hdr_no( buf + i * 512U) == log_block_get_hdr_no(buf) + i", file=0x16a3080 "/work/mariadb/storage/innobase/log/log0log.cc", line=839, function=0x16a3fd4 "void log_write_buf(byte *, ulint, ulint, lsn_t, ulint)") at assert.c:101

#8  log_write_buf (buf=0x7ffa484a00ca "\200", len=717312, pad_len=0, start_lsn=23930880, new_data_offset=352) at log0log.cc:835

#9  log_write_up_to (lsn=24648005, flush_to_disk=true) at log0log.cc:1104

#10 trx_purge_initiate_truncate (limit=..., undo_trunc=0x1c28cb0 <purge_sys+624>) at trx0purge.cc:1033

#11 trx_purge_truncate_history () at trx0purge.cc:1109

#12 trx_purge (n_purge_threads=4, truncate=true) at trx0purge.cc:1623

#13 srv_do_purge (n_total_purged=0x7ffa3d7f9e48) at srv0srv.cc:2595

#14 srv_purge_coordinator_thread (arg=0x0) at srv0srv.cc:2720

#15 start_thread (arg=<optimized out>) at pthread_create.c:486

#16 clone () at clone.S:95

Both failures happens rarely and only with a bash trick {,,,} which ensures a parallel execution of tests. I suppose it's a concurrency issue.

10.3 323e6cd74ce76c7811835bed640a2934

innodb.undo_truncate_recover '16k,2,innodb' w2 [ fail ]  Found warnings/errors in server log file!

        Test ended at 2019-04-19 00:26:03

line

mysqld: /home/buildbot/buildbot/build/mariadb-10.3.15/storage/innobase/log/log0log.cc:822: void log_write_buf(byte*, ulint, ulint, lsn_t, ulint): Assertion `pad_len >= len || i * 512U >= len - pad_len || log_block_get_hdr_no( buf + i * 512U) == log_block_get_hdr_no(buf) + i' failed.

Attempting backtrace. You can use the following information to find out

[MDEV-18038] Assertion failure in innodb.undo_truncate_recover: "pad_len >= len \|\| i * 512U >= len - pad_len \|\| log_block_get_hdr_no( buf + i * 512U) == log_block_get_hdr_no(buf) + i" Created: 2018-12-19 Updated: 2022-11-11 Resolved: 2022-11-11
Status:	Closed
Project:	MariaDB Server
Component/s:	Storage Engine - InnoDB
Affects Version/s:	10.3.12
Fix Version/s:	10.3.16

[MDEV-18038] Assertion failure in innodb.undo_truncate_recover: "pad_len >= len || i * 512U >= len - pad_len || log_block_get_hdr_no( buf + i * 512U) == log_block_get_hdr_no(buf) + i" Created: 2018-12-19 Updated: 2022-11-11 Resolved: 2022-11-11