Crashing on I/O error is unhelpful

2022-01-24  8:21:51 0 [Note] Plugin 'FEEDBACK' is disabled.

2022-01-24  8:21:51 0 [Note] InnoDB: Loading buffer pool(s) from /mnt/dd/ib_buffer_pool

2022-01-24  8:21:51 0 [Note] InnoDB: Buffer pool(s) load completed at 220124  8:21:51

2022-01-24  8:21:51 0 [Note] sql/mysqld: ready for connections.

Version: '10.8.0-MariaDB'  socket: '/tmp/mysql.sock'  port: 0  Source distribution

2022-01-24 12:04:01 4 [Warning] Aborted connection 4 to db: 'test' user: 'dan' host: 'localhost' (Got an error writing communication packets)

2022-01-24 12:09:33 0x7f7a8dffb640  InnoDB: Assertion failure in file /home/dan/repos/mariadb-server-10.8/storage/innobase/os/os0file.cc line 3596

InnoDB: Failing assertion: cb->m_err == DB_SUCCESS

InnoDB: We intentionally generate a memory trap.

$ coredumpctl debug

           PID: 16931 (mysqld)

           UID: 1000 (dan)

           GID: 1000 (dan)

        Signal: 6 (ABRT)

     Timestamp: Mon 2022-01-24 12:09:33 AEDT (4min 3s ago)

  Command Line: sql/mysqld --no-defaults --skip-networking --datadir=/mnt/dd --verbose

    Executable: /home/dan/repos/build-mariadb-server-10.8/sql/mariadbd

Core was generated by `sql/mysqld --no-defaults --skip-networking --datadir=/mnt/dd --verbose'.

Program terminated with signal SIGABRT, Aborted.

gdb) bt full

#0  0x00007f7ad93df84c in __pthread_kill_implementation () from /lib64/libc.so.6

No symbol table info available.

#1  0x00007f7ad93926a6 in raise () from /lib64/libc.so.6

No symbol table info available.

#2  0x00007f7ad937c865 in abort () from /lib64/libc.so.6

No symbol table info available.

#3  0x0000000000c9ecfb in ut_dbg_assertion_failed (expr=0x1152a4f "cb->m_err == DB_SUCCESS", file=<optimized out>, line=<optimized out>, line@entry=3596) at /home/dan/repos/mariadb-server-10.8/storage/innobase/ut/ut0dbg.cc:60

No locals.

#4  0x0000000000c037d0 in io_callback (cb=<optimized out>) at /home/dan/repos/mariadb-server-10.8/storage/innobase/os/os0file.cc:3596

        request = <optimized out>

#5  0x0000000000d6588d in tpool::task_group::execute (this=0x2348930, t=0x23613d0) at /home/dan/repos/mariadb-server-10.8/tpool/task_group.cc:55

        lk = {_M_device = 0x2348960, _M_owns = false}

#6  0x0000000000d63976 in tpool::thread_pool_generic::worker_main (this=0x22dd700, thread_var=0x22ed2a0) at /home/dan/repos/mariadb-server-10.8/tpool/tpool_generic.cc:549

        task = 0x4223

#7  0x00007f7ad964e5c4 in execute_native_thread_routine () from /lib64/libstdc++.so.6

No symbol table info available.

#8  0x00007f7ad93dda87 in start_thread () from /lib64/libc.so.6

No symbol table info available.

#9  0x00007f7ad9462640 in clone3 () from /lib64/libc.so.6

No symbol table info available.

(gdb) up

#1  0x00007f7ad93926a6 in raise () from /lib64/libc.so.6

(gdb) up

#2  0x00007f7ad937c865 in abort () from /lib64/libc.so.6

(gdb) up

#3  0x0000000000c9ecfb in ut_dbg_assertion_failed (expr=0x1152a4f "cb->m_err == DB_SUCCESS", file=<optimized out>, line=<optimized out>, line@entry=3596) at /home/dan/repos/mariadb-server-10.8/storage/innobase/ut/ut0dbg.cc:60

60		abort();

(gdb) up

#4  0x0000000000c037d0 in io_callback (cb=<optimized out>) at /home/dan/repos/mariadb-server-10.8/storage/innobase/os/os0file.cc:3596

3596	  ut_a(cb->m_err == DB_SUCCESS);

(gdb) p cb

$1 = <optimized out>

(gdb) p cb->m_err

value has been optimized out

(gdb) list

3591	

3592	extern void fil_aio_callback(const IORequest &request);

3593	

3594	static void io_callback(tpool::aiocb *cb)

3595	{

3596	  ut_a(cb->m_err == DB_SUCCESS);

3597	  const IORequest &request= *static_cast<const IORequest*>

3598	    (static_cast<const void*>(cb->m_userdata));

3599	

3600	  /* Return cb back to cache*/

(gdb) up

#5  0x0000000000d6588d in tpool::task_group::execute (this=0x2348930, t=0x23613d0) at /home/dan/repos/mariadb-server-10.8/tpool/task_group.cc:55

55	        t->m_func(t->m_arg);

(gdb) p *t

$2 = (tpool::task) {_vptr$task = 0x1174848 <vtable for tpool::task+16>, m_func = 0xc03740 <io_callback(tpool::aiocb*)>, m_arg = 0x2361378, m_group = 0x2348930}

(gdb) p (tpool::aiocb *) t->m_arg

$3 = (tpool::aiocb *) 0x2361378

(gdb) p *((tpool::aiocb *) t->m_arg)

$4 = {<iovec> = {iov_base = 0x7f7ab47f8000, iov_len = 2097152}, m_fh = 12, m_opcode = tpool::aio_opcode::AIO_PWRITE, m_offset = 1048576, m_buffer = 0x7f7ab47f8000, m_len = 2097152, m_callback = 0xc03740 <io_callback(tpool::aiocb*)>, m_group = 0x2348930, m_ret_len = 0, m_err = 28, m_internal = 0x0, m_internal_task = {_vptr$task = 0x1174848 <vtable for tpool::task+16>, m_func = 0xc03740 <io_callback(tpool::aiocb*)>, m_arg = 0x2361378, m_group = 0x2348930}, m_userdata = '\000' <repeats 16 times>, "\310\065V\002\000\000\000\000\031\000\000\000\000\000\000"}