SetAppendix(ReportError(QueryResponseInfo)) instruction stopped reporting xcm execution result

[0x8f701]

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Description of bug

1. reserve_transfer_assets may causes users to lose all funds if insufficient KSM/DOT left in wallet.
2. SetAppendix(ReportError(QueryResponseInfo)) seems stopped reporting xcm status to parachain. We start to see this after the latest kusama upgrade

Steps to reproduce

No response

[dudo50]

Hey @GopherJ ,
I have already reported this here: #3050
The fix is being issued in the latest 1.1.2 update and you can vote on it here: https://kusama.polkassembly.io/referenda/339

[acatangiu]

Marking as duplicate of #3050

[0x8f701]

@acatangiu @dudo50 How about another issue?

SetAppendix(ReportError(QueryResponseInfo)) seems stopped reporting xcm status to parachain. We start to see this after the latest kusama upgrade

I think it should be re-opened

[acatangiu]

@franciscoaguirre can you take a look please?

[0x8f701]

hi @franciscoaguirre do you have any guess? we are live on kusama as Parallel Heiko network, we had this issue since 13 days ago

You can see kusama is not re-calling our notification_received method since that time https://parallel-heiko.subscan.io/event?page=1&time_dimension=date&module=liquidstaking&event_id=notificationreceived

code ref: https://github.com/parallel-finance/parallel/blob/efa2146c42fd85743a6565b32a9bb65e9e991620/pallets/xcm-helper/src/lib.rs#L258-L280

I've checked the transact was executed successfully on kusama but without callback

[franciscoaguirre]

I'll look into it and let you know what I find

[franciscoaguirre]

I think I know what's the problem. @GopherJ can you provide me with the extrinsic that triggers the notification? So I can replay it locally and look at the logs

[0x8f701]

@franciscoaguirre sure

You can check https://parallel-heiko.subscan.io/event?page=1&time_dimension=date&module=liquidstaking&event_id=unbonding these are all xcm extrinsics that we sent to kusama

picking https://parallel-heiko.subscan.io/block/5346019?tab=event&event=5346019-3, it comes from the block 0x7136d6bab11772edc763e98479f851aad8e0b979166fc8231d46d21b4a78a354 which corresponds relaychian block: 21,766,456

and it finally executed in relaychain block 21,766,459 as you can see from: https://polkadot.js.org/apps/?rpc=wss%3A%2F%2Fkusama.api.onfinality.io%2Fpublic-ws#/explorer/query/21766459

[0x8f701]

The extrinsic sent to kusama should be simple, it should be staking.unbond(31204272643408)

[0x8f701]

@franciscoaguirre hi, do you have any ideas?

[franciscoaguirre]

I haven't managed to run it locally with the same configuration, but it's an issue with the ReportError instruction needing to send a new message and not having anything in the holding register to pay for delivery fees.

I saw the message before the appendix does RefundSurplus and DepositAsset. Could you try removing the DepositAsset and putting it after the ReportError instruction in the appendix? That would make sure the weight surplus is still in the holding register, so it can be used for the delivery fees.

This situation definitely needs to be improved, but please let me know if that solves the issue.

[0x8f701]

@acatangiu could you reopen this issue?