RDS MySQL stuck offline & upgrading

One of our DB instances on MySQL 8.0.29 was crashing with regular "DB instance restarted" in the logs. I tried modifying it to 8.0.30, but now it's stuck upgrading, with regular "Error restarting mysql: MySQL process is not running and the restart attempt failed." in the logs.

The error log contains the following over and over again:

2022-09-23T16:03:46.082336Z 0 [Warning] [MY-011068] [Server] The syntax 'log_slave_updates' is deprecated and will be removed in a future release. Please use log_replica_updates instead.
2022-09-23T16:03:46.082352Z 0 [Warning] [MY-011069] [Server] The syntax '--master-info-repository' is deprecated and will be removed in a future release.
2022-09-23T16:03:46.082362Z 0 [Warning] [MY-011069] [Server] The syntax '--master-info-repository' is deprecated and will be removed in a future release.
2022-09-23T16:03:46.082415Z 0 [Warning] [MY-011069] [Server] The syntax '--relay-log-info-file' is deprecated and will be removed in a future release.
2022-09-23T16:03:46.082425Z 0 [Warning] [MY-011069] [Server] The syntax '--relay-log-info-repository' is deprecated and will be removed in a future release.
2022-09-23T16:03:46.082457Z 0 [Warning] [MY-011068] [Server] The syntax 'skip_slave_start' is deprecated and will be removed in a future release. Please use skip_replica_start instead.
2022-09-23T16:03:46.082469Z 0 [Warning] [MY-011068] [Server] The syntax 'slave_exec_mode' is deprecated and will be removed in a future release. Please use replica_exec_mode instead.
2022-09-23T16:03:46.082483Z 0 [Warning] [MY-011068] [Server] The syntax 'slave_load_tmpdir' is deprecated and will be removed in a future release. Please use replica_load_tmpdir instead.
2022-09-23T16:03:46.082676Z 0 [Warning] [MY-010101] [Server] Insecure configuration for --secure-file-priv: Location is accessible to all OS users. Consider choosing a different directory.
2022-09-23T16:03:46.082703Z 0 [Warning] [MY-010918] [Server] 'default_authentication_plugin' is deprecated and will be removed in a future release. Please use authentication_policy instead.
2022-09-23T16:03:46.082719Z 0 [System] [MY-010116] [Server] /rdsdbbin/mysql/bin/mysqld (mysqld 8.0.29) starting as process 726
2022-09-23T16:03:46.085105Z 0 [Warning] [MY-010161] [Server] You need to use --log-bin to make --log-replica-updates work.
2022-09-23T16:03:46.089322Z 1 [System] [MY-013576] [InnoDB] InnoDB initialization has started.
2022-09-23T16:03:46.095259Z 1 [Warning] [MY-012191] [InnoDB] Scan path '/rdsdbdata/db/innodb' is ignored because it is a sub-directory of '/rdsdbdata/db/
2022-09-23T16:03:48.212117Z 1 [System] [MY-013577] [InnoDB] InnoDB initialization has ended.

InnoDB: Progress in percents: 116:03:49 UTC - mysqld got signal 11 ;
Most likely, you have hit a bug, but this error can also be caused by malfunctioning hardware.
Thread pointer: 0x1518a5406000
Attempting backtrace. You can use the following information to find out
where mysqld died. If you see no messages after this, something went
terribly wrong...
stack_bottom = 15189fcc63e8 thread_stack 0x40000
/rdsdbbin/mysql/bin/mysqld(my_print_stacktrace(unsigned char const*, unsigned long)+0x2e) [0x2097dae]
/rdsdbbin/mysql/bin/mysqld(print_fatal_signal(int)+0x2bb) [0x102057b]
/rdsdbbin/mysql/bin/mysqld(handle_fatal_signal+0xa5) [0x1020625]
/lib64/libpthread.so.0(+0x118e0) [0x1518c0d458e0]
/rdsdbbin/mysql/bin/mysqld(page_cur_search_with_match_bytes(buf_block_t const*, dict_index_t const*, dtuple_t const*, page_cur_mode_t, unsigned long*, unsigned long*, unsigned long*, unsigned long*, page_cur_t*)+0x190) [0x22d69b0]
/rdsdbbin/mysql/bin/mysqld(btr_cur_search_to_nth_level(dict_index_t*, unsigned long, dtuple_t const*, page_cur_mode_t, unsigned long, btr_cur_t*, unsigned long, char const*, unsigned long, mtr_t*)+0x1ec2) [0x2406642]
/rdsdbbin/mysql/bin/mysqld(row_search_on_row_ref(btr_pcur_t*, unsigned long, dict_table_t*, dtuple_t const*, mtr_t*)+0xd2) [0x233d2c2]
/rdsdbbin/mysql/bin/mysqld(row_undo_search_clust_to_pcur(undo_node_t*)+0x15f) [0x234bd4f]
/rdsdbbin/mysql/bin/mysqld(row_undo_mod(undo_node_t*, que_thr_t*)+0x18f) [0x258461f]
/rdsdbbin/mysql/bin/mysqld(row_undo_step(que_thr_t*)+0x52) [0x234c542]
/rdsdbbin/mysql/bin/mysqld(que_run_threads(que_thr_t*)+0x5c8) [0x22f3da8]
/rdsdbbin/mysql/bin/mysqld(trx_rollback_or_clean_recovered(bool)+0x9a5) [0x23a4475]
/rdsdbbin/mysql/bin/mysqld(trx_recovery_rollback_thread()+0x1c) [0x23a53fc]
/rdsdbbin/mysql/bin/mysqld(std::thread::_State_impl<std::thread::_Invoker<std::tuple<Detached_thread, void (*)()> > >::_M_run()+0xb0) [0x2296fc0]
/rdsdbbin/mysql/bin/mysqld() [0x2baabf0]
/lib64/libpthread.so.0(+0x744b) [0x1518c0d3b44b]
/lib64/libc.so.6(clone+0x3f) [0x1518c052040f]

Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query (0): Connection ID (thread ID): 0
Status: NOT_KILLED

The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains
information that should help you find out what is causing the crash.

Is there any way to fix this, or are we going to have to delete / recreate the instance?