5e146022da wallet: fix scanning progress calculation for single block range (Sebastian Falbesoner)
Pull request description:
If the blockchain is rescanned for a single block (i.e. start and stop hashes are equal, and with that also the estimated start/stop verification progress values) the progress calculation could lead to a NaN value caused by a division by zero (0.0/0.0), resulting in an invalid JSON result for the `getwalletinfo` RPC. This PR fixes this behaviour by setting the progress to zero in that special case. Fixes#20297.
The behaviour can easily be reproduced by continuously running single block rescans in an endless loop, e.g. via
```bash
#!/bin/bash
while true
do
bitcoin-cli rescanblockchain $(bitcoin-cli getblockcount)
done
```
and at the same time perform some `getwalletinfo` RPCs.
On the master branch, this leads to frequent invalid responses (tested on mainchain):
```
$ bitcoin-cli getwalletinfo
error: couldn't parse reply from server
$ curl --user `cat ~/.bitcoin/.cookie` --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "getwalletinfo", "params": []}' -H 'content-type: text/plain;' http://127.0.0.1:8332/
{"result":{"walletname":"","walletversion":169900,"format":"bdb","balance":0.00000000,"unconfirmed_balance":0.00000000,"immature_balance":0.00000000,"txcount":0,"keypoololdest":1603677276,"keypoolsize":1000,"hdseedid":"3196e33ecb47c7130e6ca60f2f895f9259860dca","keypoolsize_hd_internal":1000,"paytxfee":0.00000000,"private_keys_enabled":true,"avoid_reuse":false,"scanning":{"duration":0,"progress":},"descriptors":false},"error":null,"id":"curltest"}
```
(note that missing value for "progress" in the JSON result).
On the PR branch, the behaviour doesn't occur anymore.
ACKs for top commit:
MarcoFalke:
review ACK 5e146022da
promag:
Core review ACK 5e146022da.
Tree-SHA512: f0e6aad5a6cd08b36c5fe820fff0ef26663229b39169a4dbe757f3c795a41cf5c69c9dc90efe7515675ae1059307f8971123781a0514d10704123a6f28b125ab
If the blockchain is rescanned for a single block (i.e. start and stop hashes
are equal, and with that also the estimated verification progress) the progress
calculation could lead to a NaN value caused by a division by zero, resulting in
an invalid JSON result for the getwalletinfo RPC. Fixed by setting the progress
to zero in that special case.
Co-authored-by: MarcoFalke <falke.marco@gmail.com>
-BEGIN VERIFY SCRIPT-
sed -i 's/PeerLogicValidation/PeerManager/g' $(git grep -l PeerLogicValidation ./src ./test)
sed -i 's/peer_logic/peerman/g' $(git grep -l peer_logic ./src ./test)
-END VERIFY SCRIPT-
PeerLogicValidation was originally net_processing's implementation to
the validation interface. It has since grown to contain much of
net_processing's logic. Therefore rename it to reflect its
responsibilities.
Suggested in
https://github.com/bitcoin/bitcoin/pull/10756#pullrequestreview-53892618.
5f26855f10 test: Remove ubsan alignment suppressions (Wladimir J. van der Laan)
9d933ef919 prevector: avoid misaligned member accesses (Anthony Towns)
Pull request description:
Ensure prevector data is appropriately aligned. Earlier discussion in #17530.
**Edit laanwj**: In contrast to #17530, it does this without increase in size of any of the coin cache data structures (x86_64, clang)
| Struct | (size,align) before | (size,align) after |
| ------------- | ------------- | ------- |
| Coin | 48, 8 | 48, 8 |
| CCoinsCacheEntry | 56, 8 | 56, 8 |
| CScript | 32, 1 | 32, 8 |
ACKs for top commit:
laanwj:
ACK 5f26855f10
practicalswift:
ACK 5f26855f10
jonatack:
ACK 5f26855f10
Tree-SHA512: 98d112d6856f683d5b212410b73f3071d2994f1efb046a2418a35890aa1cf1aa7c96a960fc2e963fa15241e861093c1ea41951cf5b4b5431f88345eb1dd0a98a
4f4993fe2a Remove UBSan suppression (practicalswift)
958e1a307e streams: Remove unused seek(size_t) (practicalswift)
Pull request description:
Fix broken `streams_vector_reader` test. Remove unused `seek(size_t)`.
Before this change the test `streams_vector_reader` triggered an unintended unsigned integer wraparound. It tried so seek using a negative value in `reader.seek(-6)`.
Changes in this PR:
* Fix broken `VectorReader::seek(size_t)` test case
* Remove unused `seek(size_t)`
Tree-SHA512: 6c6affd680626363eef9e496748f2f86a522325abab9d6b13161f41125cdc29ceb36c2c1509c90b8ff108d606df7629e55e094cc2b6253b05a892b81ce176b71
Jonas Schnelli