src/ipc/libmultiprocess/src/mp/proxy.cpp:416:44: runtime error: member access within null pointer of type 'mp::Waiter' #34711
Description
https://github.com/bitcoin/bitcoin/actions/runs/22486512866/job/65139128983?pr=33920#step:11:3558
test 2026-02-27T13:07:39.511298Z TestFramework (DEBUG): Calling deprecated makeMiningOld2 should raise an error
node0 2026-02-27T13:07:39.511430Z [capnp-loop] [ipc/capnp/protocol.cpp:50] [IpcLogFn] [ipc] {bitcoin-node-27865/b-capnp-loop-27872} IPC server recv request #11 Init.construct$Params
node0 2026-02-27T13:07:39.511453Z [capnp-loop] [ipc/capnp/protocol.cpp:47] [IpcLogFn] [ipc:trace] {bitcoin-node-27865/b-capnp-loop-27872} request data: ()
node0 2026-02-27T13:07:39.511493Z [capnp-loop] [ipc/capnp/protocol.cpp:50] [IpcLogFn] [ipc] {bitcoin-node-27865/b-capnp-loop-27872} IPC server send response #11 Init.construct$Results
node0 2026-02-27T13:07:39.511528Z [capnp-loop] [ipc/capnp/protocol.cpp:47] [IpcLogFn] [ipc:trace] {bitcoin-node-27865/b-capnp-loop-27872} response data: (threadMap = <external capability>)
node0 2026-02-27T13:07:39.511722Z [capnp-loop] [ipc/capnp/protocol.cpp:50] [IpcLogFn] [ipc] {bitcoin-node-27865/b-capnp-loop-27872} IPC server recv request #12 Init.makeMiningOld2$Params
node0 2026-02-27T13:07:39.511765Z [capnp-loop] [ipc/capnp/protocol.cpp:47] [IpcLogFn] [ipc:trace] {bitcoin-node-27865/b-capnp-loop-27872} request data: ()
Error: node0 2026-02-27T13:07:39.511806Z [capnp-loop] [ipc/capnp/protocol.cpp:59] [IpcLogFn] [error] ipc: {bitcoin-node-27865/b-capnp-loop-27872} IPC server unhandled exception: Old mining interface (@2) not supported. Please update your client!
test 2026-02-27T13:07:39.512059Z TestFramework (DEBUG): Closing down network thread
test 2026-02-27T13:07:39.562890Z TestFramework (INFO): Stopping nodes
test 2026-02-27T13:07:39.562975Z TestFramework.node0 (DEBUG): Stopping node
node0 stderr /home/admin/actions-runner/_work/_temp/src/ipc/libmultiprocess/src/mp/proxy.cpp:416:44: runtime error: member access within null pointer of type 'mp::Waiter'
#0 0x5b9b042f9bc7 in mp::ProxyServer<mp::ThreadMap>::makeThread(capnp::CallContext<mp::ThreadMap::MakeThreadParams, mp::ThreadMap::MakeThreadResults>)::$_0::operator()() const /home/admin/actions-runner/_work/_temp/src/ipc/libmultiprocess/src/mp/proxy.cpp:416:44
#1 0x5b9b042f9bc7 in void std::__invoke_impl<void, mp::ProxyServer<mp::ThreadMap>::makeThread(capnp::CallContext<mp::ThreadMap::MakeThreadParams, mp::ThreadMap::MakeThreadResults>)::$_0>(std::__invoke_other, mp::ProxyServer<mp::ThreadMap>::makeThread(capnp::CallContext<mp::ThreadMap::MakeThreadParams, mp::ThreadMap::MakeThreadResults>)::$_0&&) /usr/lib/gcc/x86_64-linux-gnu/13/../../../../include/c++/13/bits/invoke.h:61:14
#2 0x5b9b042f9bc7 in std::__invoke_result<mp::ProxyServer<mp::ThreadMap>::makeThread(capnp::CallContext<mp::ThreadMap::MakeThreadParams, mp::ThreadMap::MakeThreadResults>)::$_0>::type std::__invoke<mp::ProxyServer<mp::ThreadMap>::makeThread(capnp::CallContext<mp::ThreadMap::MakeThreadParams, mp::ThreadMap::MakeThreadResults>)::$_0>(mp::ProxyServer<mp::ThreadMap>::makeThread(capnp::CallContext<mp::ThreadMap::MakeThreadParams, mp::ThreadMap::MakeThreadResults>)::$_0&&) /usr/lib/gcc/x86_64-linux-gnu/13/../../../../include/c++/13/bits/invoke.h:96:14
#3 0x5b9b042f9bc7 in void std::thread::_Invoker<std::tuple<mp::ProxyServer<mp::ThreadMap>::makeThread(capnp::CallContext<mp::ThreadMap::MakeThreadParams, mp::ThreadMap::MakeThreadResults>)::$_0>>::_M_invoke<0ul>(std::_Index_tuple<0ul>) /usr/lib/gcc/x86_64-linux-gnu/13/../../../../include/c++/13/bits/std_thread.h:292:13
#4 0x5b9b042f9bc7 in std::thread::_Invoker<std::tuple<mp::ProxyServer<mp::ThreadMap>::makeThread(capnp::CallContext<mp::ThreadMap::MakeThreadParams, mp::ThreadMap::MakeThreadResults>)::$_0>>::operator()() /usr/lib/gcc/x86_64-linux-gnu/13/../../../../include/c++/13/bits/std_thread.h:299:11
#5 0x5b9b042f9bc7 in std::thread::_State_impl<std::thread::_Invoker<std::tuple<mp::ProxyServer<mp::ThreadMap>::makeThread(capnp::CallContext<mp::ThreadMap::MakeThreadParams, mp::ThreadMap::MakeThreadResults>)::$_0>>>::_M_run() /usr/lib/gcc/x86_64-linux-gnu/13/../../../../include/c++/13/bits/std_thread.h:244:13
#6 0x7e490caa7db3 (/lib/x86_64-linux-gnu/libstdc++.so.6+0xecdb3) (BuildId: 753c6c8608b61d4e67be8f0c890e03e0aa046b8b)
#7 0x5b9b02f157da in asan_thread_start(void*) crtstuff.c
#8 0x7e490c719aa3 (/lib/x86_64-linux-gnu/libc.so.6+0x9caa3) (BuildId: 8e9fd827446c24067541ac5390e6f527fb5947bb)
#9 0x7e490c7a6c6b (/lib/x86_64-linux-gnu/libc.so.6+0x129c6b) (BuildId: 8e9fd827446c24067541ac5390e6f527fb5947bb)
SUMMARY: UndefinedBehaviorSanitizer: null-pointer-use /home/admin/actions-runner/_work/_temp/src/ipc/libmultiprocess/src/mp/proxy.cpp:416:44
https://github.com/bitcoin/bitcoin/actions/runs/22507213959/job/65208454067?pr=32575#step:9:2602:
test 2026-02-27T23:11:14.432126Z TestFramework (DEBUG): Calling deprecated makeMiningOld2 should raise an error
node0 2026-02-27T23:11:14.433082Z [capnp-loop] [ipc/capnp/protocol.cpp:53] [IpcLogFn] ipc: {bitcoin-node-27102/b-capnp-loop-27137} IPC server destroy N2mp11ProxyServerIN3ipc5capnp8messages6MiningEEE
node0 2026-02-27T23:11:14.433137Z [capnp-loop] [ipc/capnp/protocol.cpp:50] [IpcLogFn] [ipc] {bitcoin-node-27102/b-capnp-loop-27137} IPC server recv request #11 Init.construct$Params
node0 2026-02-27T23:11:14.433143Z [capnp-loop] [ipc/capnp/protocol.cpp:47] [IpcLogFn] [ipc:trace] {bitcoin-node-27102/b-capnp-loop-27137} request data: ()
node0 2026-02-27T23:11:14.433151Z [capnp-loop] [ipc/capnp/protocol.cpp:50] [IpcLogFn] [ipc] {bitcoin-node-27102/b-capnp-loop-27137} IPC server send response #11 Init.construct$Results
node0 2026-02-27T23:11:14.433156Z [capnp-loop] [ipc/capnp/protocol.cpp:47] [IpcLogFn] [ipc:trace] {bitcoin-node-27102/b-capnp-loop-27137} response data: (threadMap = <external capability>)
node0 2026-02-27T23:11:14.433243Z [capnp-loop] [ipc/capnp/protocol.cpp:50] [IpcLogFn] [ipc] {bitcoin-node-27102/b-capnp-loop-27137} IPC server recv request #12 Init.makeMiningOld2$Params
node0 2026-02-27T23:11:14.433255Z [capnp-loop] [ipc/capnp/protocol.cpp:47] [IpcLogFn] [ipc:trace] {bitcoin-node-27102/b-capnp-loop-27137} request data: ()
Error: 2026-02-27T23:11:14.433271Z [capnp-loop] [ipc/capnp/protocol.cpp:59] [IpcLogFn] [error] ipc: {bitcoin-node-27102/b-capnp-loop-27137} IPC server unhandled exception: Old mining interface (@2) not supported. Please update your client!
node0 2026-02-27T23:11:14.433329Z [capnp-loop] [ipc/capnp/protocol.cpp:53] [IpcLogFn] ipc: {bitcoin-node-27102/b-capnp-loop-27137} IPC server: socket disconnected.
node0 2026-02-27T23:11:14.433334Z [capnp-loop] [ipc/capnp/protocol.cpp:53] [IpcLogFn] ipc: {bitcoin-node-27102/b-capnp-loop-27137} IPC server destroy N2mp11ProxyServerIN3ipc5capnp8messages4InitEEE
test 2026-02-27T23:11:14.433542Z TestFramework (DEBUG): Closing down network thread
test 2026-02-27T23:11:14.485263Z TestFramework (INFO): Stopping nodes
test 2026-02-27T23:11:14.485316Z TestFramework.node0 (DEBUG): Stopping node