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lightningd: avoid crash from hsmd not signing anchor spend

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Temporary patch to avoid issue #6973

[ Add much more logging! --RR ]

Changelog-Fixed: lightningd: avoid crash on signing failure when trying to spend anchor outputs.
This commit is contained in:
Alex Myers 2024-05-07 10:02:54 +09:30 • committed by Alex Myers
parent a481dbcddd
commit c3280676e8
1 changed files with 30 additions and 7 deletions
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37
lightningd/anchorspend.c
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@ -266,7 +266,7 @@ static struct bitcoin_tx *spend_anchor(const tal_t *ctx,
size_t base_weight, weight;
struct amount_sat fee, diff;
struct bitcoin_tx *tx;
struct wally_psbt *psbt;
struct wally_psbt *psbt, *signed_psbt;
struct amount_msat total_value;
const u8 *msg;
@ -381,21 +381,44 @@ static struct bitcoin_tx *spend_anchor(const tal_t *ctx,
utxos),
psbt);
msg = hsm_sync_req(tmpctx, ld, take(msg));
if (!fromwire_hsmd_sign_anchorspend_reply(tmpctx, msg, &psbt))
if (!fromwire_hsmd_sign_anchorspend_reply(tmpctx, msg, &signed_psbt))
fatal("Reading sign_anchorspend_reply: %s", tal_hex(tmpctx, msg));
if (!psbt_finalize(psbt))
fatal("Non-final PSBT from hsm: %s",
fmt_wally_psbt(tmpctx, psbt));
if (!psbt_finalize(signed_psbt)) {
/* Lots of logging, to try to figure out why! */
log_broken(channel->log, "Non-final PSBT from hsm: %s",
fmt_wally_psbt(tmpctx, signed_psbt));
log_broken(channel->log, "Before signing PSBT was %s",
fmt_wally_psbt(tmpctx, psbt));
for (size_t i = 0; i < tal_count(utxos); i++) {
const struct unilateral_close_info *ci = utxos[i]->close_info;
log_broken(channel->log, "UTXO %zu: %s amt=%s keyidx=%u",
i,
fmt_bitcoin_outpoint(tmpctx, &utxos[i]->outpoint),
fmt_amount_sat(tmpctx, utxos[i]->amount),
utxos[i]->keyindex);
if (ci) {
log_broken(channel->log,
"... close from channel %"PRIu64" peer %s (%s) commitment %s csv %u",
ci->channel_id,
fmt_node_id(tmpctx, &ci->peer_id),
ci->option_anchors ? "anchor" : "non-anchor",
ci->commitment_point ? fmt_pubkey(tmpctx, ci->commitment_point) : "none",
ci->csv);
}
}
return NULL;
}
/* Update fee so we know for next time */
anch->anchor_spend_fee = fee;
tx = tal(ctx, struct bitcoin_tx);
tx->chainparams = chainparams;
tx->wtx = psbt_final_tx(tx, psbt);
tx->wtx = psbt_final_tx(tx, signed_psbt);
assert(tx->wtx);
tx->psbt = tal_steal(tx, psbt);
tx->psbt = tal_steal(tx, signed_psbt);
return tx;
}