cat ~/Downloads/affected_datadir.tar.xz.parta{a,b} > /tmp/affected_datadir.tar.xz

tar -axf /tmp/affected_datadir.tar.xz

$ gdb --args sql/mysqld --no-defaults --skip-networking --datadir=/tmp/affected_datadir/

GNU gdb (GDB) Fedora 9.1-6.fc32

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Reading symbols from sql/mysqld...

(gdb) bt

No stack.

(gdb) r

Starting program: /home/dan/repos/build-mariadb-server-10.2-debug/sql/mysqld --no-defaults --skip-networking --datadir=/tmp/affected_datadir/

[Thread debugging using libthread_db enabled]

Using host libthread_db library "/lib64/libthread_db.so.1".

2020-11-06 11:59:29 140737341138880 [Note] /home/dan/repos/build-mariadb-server-10.2-debug/sql/mysqld (mysqld 10.2.35-MariaDB-debug) starting as process 138885 ...

[New Thread 0x7ffff721f700 (LWP 138889)]

2020-11-06 11:59:29 140737341138880 [Note] InnoDB: !!!!!!!! UNIV_DEBUG switched on !!!!!!!!!

2020-11-06 11:59:29 140737341138880 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins

2020-11-06 11:59:29 140737341138880 [Note] InnoDB: Uses event mutexes

2020-11-06 11:59:29 140737341138880 [Note] InnoDB: Compressed tables use zlib 1.2.11

2020-11-06 11:59:29 140737341138880 [Note] InnoDB: Using Linux native AIO

2020-11-06 11:59:29 140737341138880 [Note] InnoDB: Number of pools: 1

2020-11-06 11:59:29 140737341138880 [Note] InnoDB: Using SSE2 crc32 instructions

2020-11-06 11:59:29 140737341138880 [Note] InnoDB: Initializing buffer pool, total size = 128M, instances = 1, chunk size = 128M

2020-11-06 11:59:29 140737341138880 [Note] InnoDB: Completed initialization of buffer pool

[New Thread 0x7fffdf177700 (LWP 138890)]

[New Thread 0x7fffde976700 (LWP 138891)]

[New Thread 0x7fffde175700 (LWP 138892)]

[New Thread 0x7fffdd974700 (LWP 138893)]

[New Thread 0x7fffdd173700 (LWP 138894)]

[New Thread 0x7fffdc972700 (LWP 138895)]

[New Thread 0x7fffdc171700 (LWP 138896)]

[New Thread 0x7fffdb970700 (LWP 138897)]

[New Thread 0x7fffdb16f700 (LWP 138898)]

[New Thread 0x7fffda96e700 (LWP 138899)]

[New Thread 0x7fffda16d700 (LWP 138900)]

2020-11-06 11:59:29 140736852317952 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().

2020-11-06 11:59:29 140737341138880 [Note] InnoDB: Highest supported file format is Barracuda.

mysqld: /home/dan/repos/mariadb-server-10.2/storage/innobase/trx/trx0undo.cc:1220: trx_undo_t *trx_undo_mem_create_at_db_start(trx_rseg_t *, ulint, ulint, mtr_t *): Assertion `type == 2' failed.

Thread 1 "mysqld" received signal SIGABRT, Aborted.

__GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50

50	  return ret;

Missing separate debuginfos, use: dnf debuginfo-install libgcc-10.2.1-6.fc32.x86_64 libstdc++-10.2.1-6.fc32.x86_64 openssl-libs-1.1.1g-1.fc32.x86_64

(gdb) bt

#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50

#1  0x00007ffff7516895 in __GI_abort () at abort.c:79

#2  0x00007ffff7516769 in __assert_fail_base (fmt=0x7ffff76840b8 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", 

    assertion=0x148fe17 "type == 2", file=0x148fa70 "/home/dan/repos/mariadb-server-10.2/storage/innobase/trx/trx0undo.cc", 

    line=1220, function=<optimized out>) at assert.c:92

#3  0x00007ffff7525e76 in __GI___assert_fail (assertion=0x148fe17 "type == 2", 

    file=0x148fa70 "/home/dan/repos/mariadb-server-10.2/storage/innobase/trx/trx0undo.cc", line=1220, 

    function=0x14902d7 "trx_undo_t *trx_undo_mem_create_at_db_start(trx_rseg_t *, ulint, ulint, mtr_t *)") at assert.c:101

#4  0x0000000000ed7bed in trx_undo_mem_create_at_db_start (rseg=0x2ce6bb0, id=0, page_no=269, mtr=0x7fffffff22a0)

    at /home/dan/repos/mariadb-server-10.2/storage/innobase/trx/trx0undo.cc:1220

#5  0x0000000000ed730a in trx_undo_lists_init (rseg=0x2ce6bb0)

    at /home/dan/repos/mariadb-server-10.2/storage/innobase/trx/trx0undo.cc:1269

#6  0x0000000000ebb909 in trx_rseg_mem_restore (rseg=0x2ce6bb0, mtr=0x7fffffff28a0)

    at /home/dan/repos/mariadb-server-10.2/storage/innobase/trx/trx0rseg.cc:193

#7  0x0000000000ebb4f1 in trx_rseg_array_init () at /home/dan/repos/mariadb-server-10.2/storage/innobase/trx/trx0rseg.cc:253

#8  0x0000000000ec4a8d in trx_lists_init_at_db_start () at /home/dan/repos/mariadb-server-10.2/storage/innobase/trx/trx0trx.cc:981

#9  0x0000000000ebf04a in trx_sys_init_at_db_start () at /home/dan/repos/mariadb-server-10.2/storage/innobase/trx/trx0sys.cc:500

#10 0x0000000000e6d3dc in innobase_start_or_create_for_mysql ()

    at /home/dan/repos/mariadb-server-10.2/storage/innobase/srv/srv0start.cc:2223

#11 0x0000000000c7a882 in innobase_init (p=0x2466470)

    at /home/dan/repos/mariadb-server-10.2/storage/innobase/handler/ha_innodb.cc:4303

#12 0x00000000009fae86 in ha_initialize_handlerton (plugin=0x243a018) at /home/dan/repos/mariadb-server-10.2/sql/handler.cc:555

#13 0x0000000000730b0d in plugin_initialize (tmp_root=0x7fffffffd080, plugin=0x243a018, argc=0x1b479d0 <remaining_argc>, 

    argv=0x23f67e8, options_only=false) at /home/dan/repos/mariadb-server-10.2/sql/sql_plugin.cc:1417

#14 0x000000000073047a in plugin_init (argc=0x1b479d0 <remaining_argc>, argv=0x23f67e8, flags=0)

    at /home/dan/repos/mariadb-server-10.2/sql/sql_plugin.cc:1698

#15 0x00000000005eb44b in init_server_components () at /home/dan/repos/mariadb-server-10.2/sql/mysqld.cc:5392

#16 0x00000000005e7653 in mysqld_main (argc=4, argv=0x23f67e8) at /home/dan/repos/mariadb-server-10.2/sql/mysqld.cc:5990

#17 0x00000000005e3362 in main (argc=4, argv=0x7fffffffdab8) at /home/dan/repos/mariadb-server-10.2/sql/main.cc:25