Delayed SIGSEGV in buf_pool_t::resize on InnoDB buffer pool resize after or during DROP TABLE

SET sql_mode='';

CREATE TABLE t1 (a INT NOT NULL, b INT, PRIMARY KEY(a)) ENGINE=InnoDB;

SET GLOBAL innodb_buffer_pool_size=21474836480;

INSERT INTO t1 VALUES (0,0,0);

DROP TABLE t1;

SET GLOBAL innodb_buffer_pool_size=@@innodb_buffer_pool_size + 1048576;

SELECT SLEEP (3);

Core was generated by `/test/MD140222-mariadb-10.9.0-linux-x86_64-dbg/bin/mysqld --no-defaults --core-'.

Program terminated with signal SIGSEGV, Segmentation fault.

#0  buf_pool_t::resize (this=this@entry=0x55764535bc40 <buf_pool>)

    at /test/10.9_dbg/storage/innobase/buf/buf0buf.cc:1683

[Current thread is 1 (Thread 0x150c29af5700 (LWP 1052367))]

(gdb) bt

#0  buf_pool_t::resize (this=this@entry=0x55764535bc40 <buf_pool>) at /test/10.9_dbg/storage/innobase/buf/buf0buf.cc:1683

#1  0x000055764471d763 in buf_resize_callback () at /test/10.9_dbg/storage/innobase/buf/buf0buf.cc:1992

#2  0x0000557644849100 in tpool::task_group::execute (this=0x557645cb6080 <single_threaded_group>, t=t@entry=0x557645cb5fe0 <buf_resize_task>) at /test/10.9_dbg/tpool/task_group.cc:55

#3  0x0000557644849189 in tpool::task::execute (this=0x557645cb5fe0 <buf_resize_task>) at /test/10.9_dbg/tpool/task.cc:32

#4  0x0000557644847e1f in tpool::thread_pool_generic::worker_main (this=0x5576465a91d0, thread_var=0x5576465b8470) at /test/10.9_dbg/tpool/tpool_generic.cc:549

#5  0x0000557644848156 in std::__invoke_impl<void, void (tpool::thread_pool_generic::*)(tpool::worker_data*), tpool::thread_pool_generic*, tpool::worker_data*> (__t=<optimized out>, __f=<optimized out>) at /usr/include/c++/9/bits/invoke.h:89

#6  std::__invoke<void (tpool::thread_pool_generic::*)(tpool::worker_data*), tpool::thread_pool_generic*, tpool::worker_data*> (__fn=<optimized out>) at /usr/include/c++/9/bits/invoke.h:95

#7  std::thread::_Invoker<std::tuple<void (tpool::thread_pool_generic::*)(tpool::worker_data*), tpool::thread_pool_generic*, tpool::worker_data*> >::_M_invoke<0ul, 1ul, 2ul> (this=<optimized out>) at /usr/include/c++/9/thread:244

#8  std::thread::_Invoker<std::tuple<void (tpool::thread_pool_generic::*)(tpool::worker_data*), tpool::thread_pool_generic*, tpool::worker_data*> >::operator() (this=<optimized out>) at /usr/include/c++/9/thread:251

#9  std::thread::_State_impl<std::thread::_Invoker<std::tuple<void (tpool::thread_pool_generic::*)(tpool::worker_data*), tpool::thread_pool_generic*, tpool::worker_data*> > >::_M_run (this=<optimized out>) at /usr/include/c++/9/thread:195

#10 0x0000150c5515fde4 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6

#11 0x0000150c5527a609 in start_thread (arg=<optimized out>) at pthread_create.c:477

#12 0x0000150c54e68293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95