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Test for extra locks held in handle_error unconditionally #2158

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TheBlueMatt
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handle_error must be called without per_peer_state mutex or pending_events mutex locks held or we may risk deadlocks. Previously we checked this in debug builds in the error path, but not in the success path.

As it turns out, funding_transaction_generated's error path does hold a per_peer_state lock, which we fix here as well as move the tests to happen unconditionally.

`handle_error` must be called without `per_peer_state` mutex or
`pending_events` mutex locks held or we may risk deadlocks.
Previously we checked this in debug builds in the error path, but
not in the success path.

As it turns out, `funding_transaction_generated`'s error path does
hold a `per_peer_state` lock, which we fix here as well as move the
tests to happen unconditionally.
@TheBlueMatt TheBlueMatt added this to the 0.0.115 milestone Apr 6, 2023
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codecov-commenter commented Apr 6, 2023

Codecov Report

Patch coverage: 78.57% and project coverage change: +0.50 🎉

Comparison is base (8fcbe64) 91.30% compared to head (9e6e20f) 91.81%.

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Additional details and impacted files
@@            Coverage Diff             @@
##             main    #2158      +/-   ##
==========================================
+ Coverage   91.30%   91.81%   +0.50%     
==========================================
  Files         102      102              
  Lines       49927    54196    +4269     
  Branches    49927    54196    +4269     
==========================================
+ Hits        45586    49760    +4174     
- Misses       4341     4436      +95     
Impacted Files Coverage Δ
lightning/src/ln/channelmanager.rs 91.53% <78.57%> (+2.40%) ⬆️

... and 9 files with indirect coverage changes

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dunxen
dunxen previously approved these changes Apr 6, 2023
wpaulino
wpaulino previously approved these changes Apr 7, 2023
@TheBlueMatt TheBlueMatt dismissed stale reviews from wpaulino and dunxen via 9e6e20f April 7, 2023 04:54
@valentinewallace valentinewallace merged commit 186cd04 into lightningdevkit:main Apr 7, 2023
k0k0ne pushed a commit to bitlightlabs/rust-lightning that referenced this pull request Sep 30, 2024
0.0.115 - Apr 24, 2023 - "Rebroadcast the Bugfixes"

API Updates
===========

 * The MSRV of the main LDK crates has been increased to 1.48 (lightningdevkit#2107).
 * Attempting to claim an un-expired payment on a channel which has closed no
   longer fails. The expiry time of payments is exposed via
   `PaymentClaimable::claim_deadline` (lightningdevkit#2148).
 * `payment_metadata` is now supported in `Invoice` deserialization, sending,
   and receiving (via a new `RecipientOnionFields` struct) (lightningdevkit#2139, lightningdevkit#2127).
 * `Event::PaymentFailed` now exposes a failure reason (lightningdevkit#2142).
 * BOLT12 messages now support stateless generation and validation (lightningdevkit#1989).
 * The `NetworkGraph` is now pruned of stale data after RGS processing (lightningdevkit#2161).
 * Max inbound HTLCs in-flight can be changed in the handshake config (lightningdevkit#2138).
 * `lightning-transaction-sync` feature `esplora-async-https` was added (lightningdevkit#2085).
 * A `ChannelPending` event is now emitted after the initial handshake (lightningdevkit#2098).
 * `PaymentForwarded::outbound_amount_forwarded_msat` was added (lightningdevkit#2136).
 * `ChannelManager::list_channels_by_counterparty` was added (lightningdevkit#2079).
 * `ChannelDetails::feerate_sat_per_1000_weight` was added (lightningdevkit#2094).
 * `Invoice::fallback_addresses` was added to fetch `bitcoin` types (lightningdevkit#2023).
 * The offer/refund description is now exposed in `Invoice{,Request}` (lightningdevkit#2206).

Backwards Compatibility
=======================

 * Payments sent with the legacy `*_with_route` methods on LDK 0.0.115+ will no
   longer be retryable via the LDK 0.0.114- `retry_payment` method (lightningdevkit#2139).
 * `Event::PaymentPathFailed::retry` was removed and will always be `None` for
    payments initiated on 0.0.115 which fail on an earlier version (lightningdevkit#2063).
 * `Route`s and `PaymentParameters` with blinded path information will not be
   readable on prior versions of LDK. Such objects are not currently constructed
   by LDK, but may be when processing BOLT12 data in a coming release (lightningdevkit#2146).
 * Providing `ChannelMonitorUpdate`s generated by LDK 0.0.115 to a
   `ChannelMonitor` on 0.0.114 or before may panic (lightningdevkit#2059). Note that this is
   in general unsupported, and included here only for completeness.

Bug Fixes
=========

 * Fixed a case where `process_events_async` may `poll` a `Future` which has
   already completed (lightningdevkit#2081).
 * Fixed deserialization of `u16` arrays. This bug may have previously corrupted
   the historical buckets in a `ProbabilisticScorer`. Users relying on the
   historical buckets may wish to wipe their scorer on upgrade to remove corrupt
   data rather than waiting on it to decay (lightningdevkit#2191).
 * The `process_events_async` task is now `Send` and can thus be polled on a
   multi-threaded runtime (lightningdevkit#2199).
 * Fixed a missing macro export causing
   `impl_writeable_tlv_based_enum{,_upgradable}` calls to not compile (lightningdevkit#2091).
 * Fixed compilation of `lightning-invoice` with both `no-std` and serde (lightningdevkit#2187)
 * Fix an issue where the `background-processor` would not wake when a
   `ChannelMonitorUpdate` completed asynchronously, causing delays (lightningdevkit#2090).
 * Fix an issue where `process_events_async` would exit immediately (lightningdevkit#2145).
 * `Router` calls from the `ChannelManager` now call `find_route_with_id` rather
   than `find_route`, as was intended and described in the API (lightningdevkit#2092).
 * Ensure `process_events_async` always exits if any sleep future returns true,
   not just if all sleep futures repeatedly return true (lightningdevkit#2145).
 * `channel_update` messages no longer set the disable bit unless the peer has
   been disconnected for some time. This should resolve cases where channels are
   disabled for extended periods of time (lightningdevkit#2198).
 * We no longer remove CLN nodes from the network graph for violating the BOLT
   spec in some cases after failing to pay through them (lightningdevkit#2220).
 * Fixed a debug assertion which may panic under heavy load (lightningdevkit#2172).
 * `CounterpartyForceClosed::peer_msg` is now wrapped in UntrustedString (lightningdevkit#2114)
 * Fixed a potential deadlock in `funding_transaction_generated` (lightningdevkit#2158).

Security
========

 * Transaction re-broadcasting is now substantially more aggressive, including a
   new regular rebroadcast feature called on a timer from the
   `background-processor` or from `ChainMonitor::rebroadcast_pending_claims`.
   This should substantially increase transaction confirmation reliability
   without relying on downstream `TransactionBroadcaster` implementations for
   rebroadcasting (lightningdevkit#2203, lightningdevkit#2205, lightningdevkit#2208).
 * Implemented the changes from BOLT PRs lightningdevkit#1031, lightningdevkit#1032, and lightningdevkit#1040 which resolve a
   privacy vulnerability which allows an intermediate node on the path to
   discover the final destination for a payment (lightningdevkit#2062).

In total, this release features 110 files changed, 11928 insertions, 6368
deletions in 215 commits from 21 authors, in alphabetical order:
 * Advait
 * Alan Cohen
 * Alec Chen
 * Allan Douglas R. de Oliveira
 * Arik Sosman
 * Elias Rohrer
 * Evan Feenstra
 * Jeffrey Czyz
 * John Cantrell
 * Lucas Soriano del Pino
 * Marc Tyndel
 * Matt Corallo
 * Paul Miller
 * Steven
 * Steven Williamson
 * Steven Zhao
 * Tony Giorgio
 * Valentine Wallace
 * Wilmer Paulino
 * benthecarman
 * munjesi
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5 participants