Reproduction steps with the core dump from this BFG:

(gdb) thread apply 40 bt 27

gdb will succeed

(gdb) thread apply 40 bt 28

Recursive internal problem.

 

(gdb) disable pretty-printer global mongo;DatabaseName

1 printer disabled

281 of 282 printers enabled

(gdb) thread apply 40 bt 28

gdb will succeed

 

 

(gdb) f 27
(gdb) p dbName
$6 = (const mongo::DatabaseName &) @0x60002d1e0000: {
  _data =

{     _data = 0x55bbd34e7fd5 <__tsan_atomic32_store()+69> "H\215\r\004Z\215",     _length = 4611686018427387904,     _footer = 140379693904630   }

}

The value of dbName is wrong and our pretty printers try to allocate 4611686018427387904 bytes to read it

 

(gdb) python gdb.selected_inferior().read_memory(0x55bbd34e7fd5, 4611686018427387904)
/data/mci/0d2d927a2c6c6202f906eb70ddfa4799/toolchain-builder/tmp/build-gdb-v4.sh-n3T/src/gdb-12.1/gdb/utils.c:712: internal-error: virtual memory exhausted: can't allocate 4611686018427387904 bytes.
A problem internal to GDB has been detected,
further debugging may prove unreliable.