Description:
After `mysql-server` on my `ubuntu 20.04` server crashed, I copied `/var/lib/mysql` to backup folder on the server. Now I tried to restore all databases by copying from backup path to `/var/lib/mysql` but after doing this it won't let `mysql-server` to start.
```
information that should help you find out what is causing the crash.
2022-11-01T20:12:19.497292Z 0 [System] [MY-013951] [Server] 2022-11-01T20:12:19Z UTC - mysqld got signal 6 ;
2022-11-01T20:12:19.497293Z 0 [System] [MY-013951] [Server] Most likely, you have hit a bug, but this error can also be caused by malfunctioning hardware.
2022-11-01T20:12:19.497294Z 0 [System] [MY-013951] [Server] BuildID[sha1]=42fffe844f4ae6ac576008e5df6b737ffd4d4eef
2022-11-01T20:12:19.497295Z 0 [System] [MY-013951] [Server] Thread pointer: 0x55866695e820
2022-11-01T20:12:19.497296Z 0 [System] [MY-013951] [Server] Attempting backtrace. You can use the following information to find out
2022-11-01T20:12:19.497297Z 0 [System] [MY-013951] [Server] where mysqld died. If you see no messages after this, something went
2022-11-01T20:12:19.497298Z 0 [System] [MY-013951] [Server] terribly wrong...
2022-11-01T20:12:19.497299Z 0 [System] [MY-013951] [Server] stack_bottom = 7f3f2e7cabe0 thread_stack 0x100000
2022-11-01T20:12:19.497300Z 0 [System] [MY-013951] [Server] /usr/sbin/mysqld(my_print_stacktrace(unsigned char const*, unsigned long)+0x41) [0x558660d3af11]
2022-11-01T20:12:19.497301Z 0 [System] [MY-013951] [Server] /usr/sbin/mysqld(print_fatal_signal(int)+0x39b) [0x55865fbcc97b]
2022-11-01T20:12:19.497302Z 0 [System] [MY-013951] [Server] /usr/sbin/mysqld(my_server_abort()+0x76) [0x55865fbccac6]
2022-11-01T20:12:19.497303Z 0 [System] [MY-013951] [Server] /usr/sbin/mysqld(my_abort()+0xe) [0x558660d34f3e]
2022-11-01T20:12:19.497304Z 0 [System] [MY-013951] [Server] /usr/sbin/mysqld(ut_dbg_assertion_failed(char const*, char const*, unsigned long)+0x349) [0x558660fc7759]
2022-11-01T20:12:19.497305Z 0 [System] [MY-013951] [Server] /usr/sbin/mysqld(+0x2520908) [0x558660f95908]
2022-11-01T20:12:19.497306Z 0 [System] [MY-013951] [Server] /usr/sbin/mysqld(trx_undo_prev_version_build(unsigned char const*, mtr_t*, unsigned char const*, dict_index_t const*, unsigned long*, mem_block_info_t*, unsigned char**, mem_block_info_t*, dtuple_t const**, unsigned long, lob::undo_vers_t*)+0x698) [0x558660f95fe8]
2022-11-01T20:12:19.497307Z 0 [System] [MY-013951] [Server] /usr/sbin/mysqld(row_vers_build_for_consistent_read(unsigned char const*, mtr_t*, dict_index_t*, unsigned long**, ReadView*, mem_block_info_t**, mem_block_info_t*, unsigned char**, dtuple_t const**, lob::undo_vers_t*)+0x2ac) [0x558660f467ac]
2022-11-01T20:12:19.497308Z 0 [System] [MY-013951] [Server] /usr/sbin/mysqld(Row_sel_get_clust_rec_for_mysql::operator()(row_prebuilt_t*, dict_index_t*, unsigned char const*, que_thr_t*, unsigned char const**, unsigned long**, mem_block_info_t**, dtuple_t const**, mtr_t*, lob::undo_vers_t*)+0x776) [0x558660f26056]
2022-11-01T20:12:19.497309Z 0 [System] [MY-013951] [Server] /usr/sbin/mysqld(row_search_mvcc(unsigned char*, page_cur_mode_t, row_prebuilt_t*, unsigned long, unsigned long)+0x2599) [0x558660f2d349]
2022-11-01T20:12:19.497310Z 0 [System] [MY-013951] [Server] /usr/sbin/mysqld(ha_innobase::index_read(unsigned char*, unsigned char const*, unsigned int, ha_rkey_function)+0x341) [0x558660d96e51]
2022-11-01T20:12:19.497311Z 0 [System] [MY-013951] [Server] /usr/sbin/mysqld(handler::index_read_idx_map(unsigned char*, unsigned int, unsigned char const*, unsigned long, ha_rkey_function)+0x131) [0x55865fce5901]
2022-11-01T20:12:19.497312Z 0 [System] [MY-013951] [Server] /usr/sbin/mysqld(handler::ha_index_read_idx_map(unsigned char*, unsigned int, unsigned char const*, unsigned long, ha_rkey_function)+0x1ec) [0x55865fcde3ac]
2022-11-01T20:12:19.497313Z 0 [System] [MY-013951] [Server] /usr/sbin/mysqld(dd::Raw_table::find_record(dd::Object_key const&, std::unique_ptr<dd::Raw_record, std::default_delete<dd::Raw_record> >&)+0x6b) [0x558660b4b2ab]
2022-11-01T20:12:19.497314Z 0 [System] [MY-013951] [Server] /usr/sbin/mysqld(bool dd::cache::Storage_adapter::get<dd::Item_name_key, dd::Abstract_table>(THD*, dd::Item_name_key const&, enum_tx_isolation, bool, dd::Abstract_table const**)+0x281) [0x558660b39351]
2022-11-01T20:12:19.497315Z 0 [System] [MY-013951] [Server] /usr/sbin/mysqld(dd::sync_meta_data(THD*)+0xa57) [0x558660abbfd7]
2022-11-01T20:12:19.497316Z 0 [System] [MY-013951] [Server] /usr/sbin/mysqld(dd::bootstrap::restart(THD*)+0xfa) [0x558660abd93a]
2022-11-01T20:12:19.497317Z 0 [System] [MY-013951] [Server] /usr/sbin/mysqld(+0x2292af1) [0x558660d07af1]
2022-11-01T20:12:19.497318Z 0 [System] [MY-013951] [Server] /usr/sbin/mysqld(dd::upgrade_57::do_pre_checks_and_initialize_dd(THD*)+0xb38) [0x558660d0d9c8]
2022-11-01T20:12:19.497319Z 0 [System] [MY-013951] [Server] /usr/sbin/mysqld(+0x121cfb6) [0x55865fc91fb6]
2022-11-01T20:12:19.497320Z 0 [System] [MY-013951] [Server] /usr/sbin/mysqld(+0x2839d7d) [0x5586612aed7d]
2022-11-01T20:12:19.497321Z 0 [System] [MY-013951] [Server] /lib/x86_64-linux-gnu/libpthread.so.0(+0x8609) [0x7f3f3d92a609]
2022-11-01T20:12:19.497322Z 0 [System] [MY-013951] [Server] /lib/x86_64-linux-gnu/libc.so.6(clone+0x43) [0x7f3f3d4fb133]
2022-11-01T20:12:19.497323Z 0 [System] [MY-013951] [Server] Trying to get some variables.
2022-11-01T20:12:19.497324Z 0 [System] [MY-013951] [Server] Some pointers may be invalid and cause the dump to abort.
2022-11-01T20:12:19.497325Z 0 [System] [MY-013951] [Server] Query (0): is an invalid pointer
2022-11-01T20:12:19.497326Z 0 [System] [MY-013951] [Server] Connection ID (thread ID): 1
2022-11-01T20:12:19.497327Z 0 [System] [MY-013951] [Server] Status: NOT_KILLED
2022-11-01T20:12:19.497328Z 0 [System] [MY-013951] [Server] The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains
2022-11-01T20:12:19.497329Z 0 [System] [MY-013951] [Server] information that should help you find out what is causing the crash.
2022-11-01T20:12:20.428088Z 0 [System] [MY-010116] [Server] /usr/sbin/mysqld (mysqld 8.0.31-0ubuntu0.20.04.1) starting as process 163519
2022-11-01T20:12:20.435161Z 0 [System] [MY-013951] [Server] A backtrace was processed and added to the main error-log in the appropriate format.
2022-11-01T20:12:20.446410Z 1 [System] [MY-013576] [InnoDB] InnoDB initialization has started.
2022-11-01T20:12:21.216911Z 1 [System] [MY-013577] [InnoDB] InnoDB initialization has ended.
2022-11-01T20:12:21.364955Z 1 [Warning] [MY-013021] [InnoDB] A transaction id in a record of table `mysql`.`tables` is newer than the system-wide maximum.
2022-11-01T20:12:21.365075Z 1 [Warning] [MY-013021] [InnoDB] A transaction id in a record of table `mysql`.`tables` is newer than the system-wide maximum.
2022-11-01T20:12:21.365626Z 1 [Warning] [MY-013021] [InnoDB] A transaction id in a record of table `mysql`.`tables` is newer than the system-wide maximum.
2022-11-01T20:12:21.365679Z 1 [Warning] [MY-013021] [InnoDB] A transaction id in a record of table `mysql`.`tables` is newer than the system-wide maximum.
2022-11-01T20:12:21.366345Z 1 [ERROR] [MY-013183] [InnoDB] Assertion failure: trx0rec.ic:92:next_undo_offset > undo_offset thread 140550543333120
```
How to repeat:
backup files by copying to backup folder and purge mysql-server and reinstall it the restore backup files.
