69d43905b7 test: add coverage for wallet read write db deadlock (furszy)
12daf6fcdc walletdb: scope bdb::EraseRecords under a single db txn (furszy)
043fcb0b05 wallet: bugfix, GetNewCursor() misses to provide batch ptr to BerkeleyCursor (furszy)
Pull request description:
Decoupled from #26644 so it can closed in favor of #26715.
Basically, with bdb, we can't make a write operation while we are traversing the db with the same db handler. These two operations are performed in different txn contexts and cause a deadlock.
Added coverage by using `EraseRecords()` which is the simplest function that executes this process.
To replicate it, need bdb support and drop the first commit. The test will run forever.
ACKs for top commit:
achow101:
ACK 69d43905b7
hebasto:
re-ACK 69d43905b7
Tree-SHA512: b3773be78925f674e962f4a5c54b398a9d0cfe697148c01c3ec0d68281cc5c1444b38165960d219ef3cf1a57c8ce6427f44a876275958d49bbc0808486e19d7d
6cc136bbd3