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#23233 bip324-net-v2 #1

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#23233 bip324-net-v2 #1

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@dhruv dhruv commented Nov 19, 2021

Revives #18242. Depends on #25361 (please review that first, the first 6 commits are to be reviewed there).

Latest BIP324 draft is here (not submitted to the BIP repository since it's still under work; the changes being made do not affect this PR).

This PR adds a p2p message transport {de}serializer for encrypted message after BIP324. The code is exclusively used in the tests.

Includes:

  • Authenticated encryption
  • short command IDs
  • unit and fuzz tests

Excludes (to keep it reviewable):

  • The handshake
  • ECDH (enabling libsecp256k1 & CKey implementation)
  • Service flag (to signal v2 support) and a way to globally enable it

src/test/net_tests.cpp Show resolved Hide resolved
src/test/net_tests.cpp Show resolved Hide resolved
src/test/net_tests.cpp Show resolved Hide resolved
src/net.h Outdated
if (ret < 0) {
Reset();
} else {
msg_bytes = msg_bytes.subspan(ret);
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7561797

Notes:
Chopping off the number of bytes which are read doesn't affect the unit test in any way since 2 different span_msg is passed to Read() and they aren't used anywhere else. Also span_msg and msg.data.data() will share different memory locations. It might be of significance somewhere else though.

src/protocol.h Show resolved Hide resolved
src/net.cpp Outdated
// the packet length excludes the 16 byte MAC tag
uint32_t packet_length = serialized_command_size + msg.data.size();

// prepare the packet length & message command and reserve 4 bytes (3bytes AAD + 1byte short-ID)
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yocto nit : 7561797

Suggested change
// prepare the packet length & message command and reserve 4 bytes (3bytes AAD + 1byte short-ID)
// prepare the packet length & message command and reserve 4 bytes (3 bytes AAD + 1 byte short-ID)

src/net.cpp Outdated

// prepare the packet length & message command and reserve 4 bytes (3bytes AAD + 1byte short-ID)
std::vector<unsigned char> serialized_header(CHACHA20_POLY1305_AEAD_AAD_LEN + 1);
// LE serialize the 24bits length
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yocto nit : 7561797

Suggested change
// LE serialize the 24bits length
// LE serialize the 24 bits length

src/net.cpp Outdated
// prepare the packet length & message command and reserve 4 bytes (3bytes AAD + 1byte short-ID)
std::vector<unsigned char> serialized_header(CHACHA20_POLY1305_AEAD_AAD_LEN + 1);
// LE serialize the 24bits length
// we do "manually" encode this since there is no helper for 24bit serialization
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yocto nit : 7561797

Suggested change
// we do "manually" encode this since there is no helper for 24bit serialization
// we do "manually" encode this since there is no helper for 24 bit serialization

src/net.cpp Outdated Show resolved Hide resolved
src/test/net_tests.cpp Outdated Show resolved Hide resolved
@dhruv dhruv force-pushed the __bip324-net-v2 branch 5 times, most recently from 83c8657 to 6f81971 Compare December 3, 2021 19:20
dhruv pushed a commit that referenced this pull request Jan 13, 2022
This is needed to turn globals into member variables. Otherwise, this
will lead to issues:

runtime error: reference binding to null pointer of type 'CBlockFileInfo'
    #0 in std::vector<CBlockFileInfo, std::allocator<CBlockFileInfo> >::operator[](unsigned long) /usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/bits/stl_vector.h:1046:2
    #1 in BlockManager::FlushBlockFile(bool, bool) src/node/blockstorage.cpp:540:47
    #2 in CChainState::FlushStateToDisk(BlockValidationState&, FlushStateMode, int) src/validation.cpp:2262:28
    #3 in CChainState::ResizeCoinsCaches(unsigned long, unsigned long) src/validation.cpp:4414:15
    #4 in validation_chainstate_tests::validation_chainstate_resize_caches::test_method() src/test/validation_chainstate_tests.cpp:66:12
@dhruv dhruv force-pushed the __bip324-net-v2 branch 7 times, most recently from afff6b6 to a999f11 Compare January 24, 2022 17:51
dhruv pushed a commit that referenced this pull request Jan 31, 2022
This change fixes "Hunk #1 succeeded at 307 (offset -1 lines)."
@dhruv dhruv force-pushed the __bip324-net-v2 branch 5 times, most recently from 6e87197 to ed5f00d Compare February 2, 2022 01:08
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dhruv commented Feb 9, 2022

TODO push and update PR:

git range-diff 5e8e0b3d7f ed5f00d d7afc96

dhruv pushed a commit that referenced this pull request Feb 16, 2022
…ndbox

fa45597 util: Add missing unlinkat to syscall sandbox (MarcoFalke)

Pull request description:

  This will be needed for g++-12 (after libstdc++6 12-20220206).

  Steps to reproduce:

  ```
  gdb --args ./src/bitcoind -sandbox=log-and-abort -regtest
  ./src/bitcoin-cli -regtest -named createwallet wallet_name=a descriptors=false
  ./src/bitcoin-cli -regtest stop
  ```

  BT:

  ```
  Thread 1 "b-shutoff" received signal SIGSYS, Bad system call.
  0x00007ffff79564f7 in unlinkat () from /lib/x86_64-linux-gnu/libc.so.6
  (gdb) bt
  #0  0x00007ffff79564f7 in unlinkat () from /lib/x86_64-linux-gnu/libc.so.6
  #1  0x00007ffff7cc7335 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
  #2  0x00007ffff7cc94e3 in std::filesystem::remove_all(std::filesystem::__cxx11::path const&) () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
  #3  0x00005555559d4918 in wallet::BerkeleyEnvironment::Flush (this=0x7fffc4005160, fShutdown=<optimized out>) at /usr/include/c++/12/bits/fs_path.h:595
  #4  0x000055555592c058 in wallet::StopWallets (context=...) at /usr/include/c++/12/bits/shared_ptr_base.h:1665
  #5  0x00005555556617ca in Shutdown (node=...) at ./src/init.cpp:293
  #6  0x000055555563ada6 in AppInit (argv=<optimized out>, argc=<optimized out>, node=...) at ./src/bitcoind.cpp:249
  #7  main (argc=<optimized out>, argv=<optimized out>) at ./src/bitcoind.cpp:273

ACKs for top commit:
  laanwj:
    Code review ACK fa45597

Tree-SHA512: e80a38828f8656040954c9befa2d1c9d5170e204dc09c61031633349897f51ccd85cc5c99a089c4726d7f5237875cd9ed3fa8ef864cd6c1c8a2b8250b392d57f
@dhruv dhruv force-pushed the __bip324-net-v2 branch 2 times, most recently from deeceeb to 6e87202 Compare February 22, 2022 21:59
dhruv pushed a commit that referenced this pull request Mar 2, 2022
fa7e147 test: Fix intermittent Tsan issue (MarcoFalke)

Pull request description:

  Fix https://cirrus-ci.com/task/5176769937408000?logs=ci#L5161

  ```
  WARNING: ThreadSanitizer: data race (pid=22965)
    Write of size 8 at 0x7f74d5e21f50 by main thread:
      #0 std::__1::ios_base::precision(long) /usr/lib/llvm-13/bin/../include/c++/v1/ios:513:18 (test_bitcoin+0x1a8366)
      #1 boost::io::ios_base_all_saver::restore() /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/io/ios_state.hpp:341:17 (test_bitcoin+0x1a8366)
      #2 boost::unit_test::unit_test_log_t::operator<<(boost::unit_test::log::begin const&) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/unit_test_log.ipp:336:55 (test_bitcoin+0x1a8366)
      #3 boost::test_tools::tt_detail::report_assertion(boost::test_tools::assertion_result const&, boost::unit_test::lazy_ostream const&, boost::unit_test::basic_cstring<char const>, unsigned long, boost::test_tools::tt_detail::tool_level, boost::test_tools::tt_detail::check_type, unsigned long, ...) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/test_tools.ipp:359:19 (test_bitcoin+0x1b3b9b)
      #4 txindex_tests::txindex_initial_sync::test_method() src/test/txindex_tests.cpp:31:5 (test_bitcoin+0x78aebc)
      #5 txindex_tests::txindex_initial_sync_invoker() src/test/txindex_tests.cpp:16:1 (test_bitcoin+0x78a384)
      #6 boost::detail::function::void_function_invoker0<void (*)(), void>::invoke(boost::detail::function::function_buffer&) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/function/function_template.hpp:117:11 (test_bitcoin+0x2bf30d)
      #7 boost::function0<void>::operator()() const /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/function/function_template.hpp:763:14 (test_bitcoin+0x224027)
      #8 boost::detail::forward::operator()() /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/execution_monitor.ipp:1368:32 (test_bitcoin+0x224027)
      #9 boost::detail::function::function_obj_invoker0<boost::detail::forward, int>::invoke(boost::detail::function::function_buffer&) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/function/function_template.hpp:137:18 (test_bitcoin+0x224027)
      #10 boost::function0<int>::operator()() const /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/function/function_template.hpp:763:14 (test_bitcoin+0x1ac66c)
      #11 int boost::detail::do_invoke<boost::shared_ptr<boost::detail::translator_holder_base>, boost::function<int ()> >(boost::shared_ptr<boost::detail::translator_holder_base> const&, boost::function<int ()> const&) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/execution_monitor.ipp:290:30 (test_bitcoin+0x1ac66c)
      #12 boost::execution_monitor::catch_signals(boost::function<int ()> const&) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/execution_monitor.ipp:879:16 (test_bitcoin+0x1ac66c)
      #13 boost::execution_monitor::execute(boost::function<int ()> const&) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/execution_monitor.ipp:1277:16 (test_bitcoin+0x1ac980)
      #14 boost::execution_monitor::vexecute(boost::function<void ()> const&) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/execution_monitor.ipp:1377:5 (test_bitcoin+0x1a7f9b)
      #15 boost::unit_test::unit_test_monitor_t::execute_and_translate(boost::function<void ()> const&, unsigned long) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/unit_test_monitor.ipp:49:9 (test_bitcoin+0x1a7f9b)
      #16 boost::unit_test::framework::state::execute_test_tree(unsigned long, unsigned long, boost::unit_test::framework::state::random_generator_helper const*) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/framework.ipp:823:44 (test_bitcoin+0x1e0d5c)
      #17 boost::unit_test::framework::state::execute_test_tree(unsigned long, unsigned long, boost::unit_test::framework::state::random_generator_helper const*) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/framework.ipp:792:58 (test_bitcoin+0x1e14a6)
      #18 boost::unit_test::framework::state::execute_test_tree(unsigned long, unsigned long, boost::unit_test::framework::state::random_generator_helper const*) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/framework.ipp:792:58 (test_bitcoin+0x1e14a6)
      #19 boost::unit_test::framework::run(unsigned long, bool) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/framework.ipp:1696:29 (test_bitcoin+0x1a6bfb)
      #20 boost::unit_test::unit_test_main(boost::unit_test::test_suite* (*)(int, char**), int, char**) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/unit_test_main.ipp:248:9 (test_bitcoin+0x1c4ed6)
      #21 main /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/unit_test_main.ipp:304:12 (test_bitcoin+0x1c5506)
    Previous write of size 8 at 0x7f74d5e21f50 by thread T4:
      [failed to restore the stack]
    Location is global 'std::__1::cout' of size 160 at 0x7f74d5e21f30 (libc++.so.1+0x0000000cdf50)
    Thread T4 'b-txindex' (tid=22989, running) created by main thread at:
      #0 pthread_create <null> (test_bitcoin+0x1184cd)
      #1 std::__1::__libcpp_thread_create(unsigned long*, void* (*)(void*), void*) /usr/lib/llvm-13/bin/../include/c++/v1/__threading_support:514:10 (test_bitcoin+0xa23f1b)
      #2 std::__1::thread::thread<void (*)(char const*, std::__1::function<void ()>), char const*, BaseIndex::Start(CChainState&)::$_0, void>(void (*&&)(char const*, std::__1::function<void ()>), char const*&&, BaseIndex::Start(CChainState&)::$_0&&) /usr/lib/llvm-13/bin/../include/c++/v1/thread:307:16 (test_bitcoin+0xa23f1b)
      #3 BaseIndex::Start(CChainState&) src/index/base.cpp:363:21 (test_bitcoin+0xa23f1b)
      #4 txindex_tests::txindex_initial_sync::test_method() src/test/txindex_tests.cpp:31:5 (test_bitcoin+0x78adfa)
      #5 txindex_tests::txindex_initial_sync_invoker() src/test/txindex_tests.cpp:16:1 (test_bitcoin+0x78a384)
      #6 boost::detail::function::void_function_invoker0<void (*)(), void>::invoke(boost::detail::function::function_buffer&) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/function/function_template.hpp:117:11 (test_bitcoin+0x2bf30d)
      #7 boost::function0<void>::operator()() const /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/function/function_template.hpp:763:14 (test_bitcoin+0x224027)
      #8 boost::detail::forward::operator()() /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/execution_monitor.ipp:1368:32 (test_bitcoin+0x224027)
      #9 boost::detail::function::function_obj_invoker0<boost::detail::forward, int>::invoke(boost::detail::function::function_buffer&) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/function/function_template.hpp:137:18 (test_bitcoin+0x224027)
      #10 boost::function0<int>::operator()() const /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/function/function_template.hpp:763:14 (test_bitcoin+0x1ac66c)
      #11 int boost::detail::do_invoke<boost::shared_ptr<boost::detail::translator_holder_base>, boost::function<int ()> >(boost::shared_ptr<boost::detail::translator_holder_base> const&, boost::function<int ()> const&) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/execution_monitor.ipp:290:30 (test_bitcoin+0x1ac66c)
      #12 boost::execution_monitor::catch_signals(boost::function<int ()> const&) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/execution_monitor.ipp:879:16 (test_bitcoin+0x1ac66c)
      #13 boost::execution_monitor::execute(boost::function<int ()> const&) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/execution_monitor.ipp:1277:16 (test_bitcoin+0x1ac980)
      #14 boost::execution_monitor::vexecute(boost::function<void ()> const&) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/execution_monitor.ipp:1377:5 (test_bitcoin+0x1a7f9b)
      #15 boost::unit_test::unit_test_monitor_t::execute_and_translate(boost::function<void ()> const&, unsigned long) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/unit_test_monitor.ipp:49:9 (test_bitcoin+0x1a7f9b)
      #16 boost::unit_test::framework::state::execute_test_tree(unsigned long, unsigned long, boost::unit_test::framework::state::random_generator_helper const*) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/framework.ipp:823:44 (test_bitcoin+0x1e0d5c)
      #17 boost::unit_test::framework::state::execute_test_tree(unsigned long, unsigned long, boost::unit_test::framework::state::random_generator_helper const*) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/framework.ipp:792:58 (test_bitcoin+0x1e14a6)
      #18 boost::unit_test::framework::state::execute_test_tree(unsigned long, unsigned long, boost::unit_test::framework::state::random_generator_helper const*) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/framework.ipp:792:58 (test_bitcoin+0x1e14a6)
      #19 boost::unit_test::framework::run(unsigned long, bool) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/framework.ipp:1696:29 (test_bitcoin+0x1a6bfb)
      #20 boost::unit_test::unit_test_main(boost::unit_test::test_suite* (*)(int, char**), int, char**) /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/unit_test_main.ipp:248:9 (test_bitcoin+0x1c4ed6)
      #21 main /tmp/cirrus-ci-build/depends/x86_64-pc-linux-gnu/include/boost/test/impl/unit_test_main.ipp:304:12 (test_bitcoin+0x1c5506)
  SUMMARY: ThreadSanitizer: data race /usr/lib/llvm-13/bin/../include/c++/v1/ios:513:18 in std::__1::ios_base::precision(long)
  ==================
  Exit status: 2

ACKs for top commit:
  fanquake:
    CI ignored ACK fa7e147

Tree-SHA512: 5194e026410b96ad3c8addeecce0a55ee0271c3cfac9fa0715345b1a50d59925549cee0a3e415e5837ae6d2f214a7b622c73cfc7fdf41d5e55c24fb87fddb9d1
@dhruv dhruv force-pushed the __bip324-net-v2 branch 2 times, most recently from 5a0994f to b0d5fa2 Compare March 10, 2022 18:36
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dhruv commented Dec 7, 2022

rebased -- now making rekey changes

@dhruv
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dhruv commented Dec 8, 2022

0c808de has the new rekeying mechanism

dhruv pushed a commit that referenced this pull request Dec 14, 2022
e4be0e9 test: add -maxtipage test for the maximum allowable value (James O'Beirne)
a451e83 fix: validation: cast now() to seconds for maxtipage comparison (James O'Beirne)

Pull request description:

  Since bitcoin/bitcoin@faf4487, the maxtipage comparison in IsInitialBlockDownload() has been broken, since the NodeClock::now() time_point is in the system's native denomination (nanoseconds).

  Without this patch, specifying the maximum allowable -maxtipage (9223372036854775807) results in a SIGABRT crash:

  ```
  % gdb --args ./src/bitcoind -maxtipage=9223372036854775207 -minimumchainwork=0x00 -stopatheight=30000
  ...
  2022-11-09T15:55:17Z [dnsseed] dnsseed thread exit
  [Thread 0x7fff937fe640 (LWP 69883) exited]

  Thread 29 "b-msghand" received signal SIGABRT, Aborted.
  [Switching to Thread 0x7fff91ffb640 (LWP 69886)]
  __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, no_tid=no_tid@entry=0) at ./nptl/pthread_kill.c:44
  44      ./nptl/pthread_kill.c: No such file or directory.
  (gdb) bt
  #0  __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, no_tid=no_tid@entry=0) at ./nptl/pthread_kill.c:44
  #1  0x00007ffff768989f in __pthread_kill_internal (signo=6, threadid=<optimized out>) at ./nptl/pthread_kill.c:78
  #2  0x00007ffff763da52 in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26
  #3  0x00007ffff7628469 in __GI_abort () at ./stdlib/abort.c:79
  #4  0x00007ffff7cf79a4 in __mulvdi3 () from /lib/x86_64-linux-gnu/libgcc_s.so.1
  #5  0x00005555558d13ab in std::chrono::__duration_cast_impl<std::chrono::duration<long, std::ratio<1l, 1000000000l> >, std::ratio<1000000000l, 1l>, long, false, true>::__cast<long, std::ratio<1l, 1l> > (__d=...) at /usr/include/c++/12/bits/chrono.h:521
  #6  std::chrono::duration_cast<std::chrono::duration<long, std::ratio<1l, 1000000000l> >, long, std::ratio<1l, 1l> > (__d=...)
      at /usr/include/c++/12/bits/chrono.h:260
  #7  std::chrono::duration<long, std::ratio<1l, 1000000000l> >::duration<long, std::ratio<1l, 1l>, void> (__d=..., this=<optimized out>)
      at /usr/include/c++/12/bits/chrono.h:514
  #8  std::chrono::operator-<long, std::ratio<1l, 1000000000l>, long, std::ratio<1l, 1l> > (__rhs=..., __lhs=...)
      at /usr/include/c++/12/bits/chrono.h:650
  #9  std::chrono::operator-<NodeClock, std::chrono::duration<long, std::ratio<1l, 1000000000l> >, long, std::ratio<1l, 1l> > (__rhs=...,
      __lhs=...) at /usr/include/c++/12/bits/chrono.h:1020
  #10 Chainstate::IsInitialBlockDownload (this=0x555556071940) at ./src/validation.cpp:1545
  #11 0x00005555556efd1e in operator() (__closure=<optimized out>) at ./src/net_processing.cpp:3369
  #12 (anonymous namespace)::PeerManagerImpl::ProcessMessage (this=0x555556219be0, pfrom=..., msg_type=..., vRecv=..., time_received=...,
      interruptMsgProc=...) at ./src/net_processing.cpp:3369
  #13 0x00005555556f75cc in (anonymous namespace)::PeerManagerImpl::ProcessMessages (this=0x555556219be0, pfrom=<optimized out>,
      interruptMsgProc=std::atomic<bool> = { false }) at ./src/net_processing.cpp:4985
  #14 0x00005555556a83c9 in CConnman::ThreadMessageHandler (this=0x5555560ebc70) at ./src/net.cpp:2014
  #15 0x0000555555c4d5d6 in std::function<void ()>::operator()() const (this=0x7fff91ffadb0) at /usr/include/c++/12/bits/std_function.h:591
  #16 util::TraceThread(std::basic_string_view<char, std::char_traits<char> >, std::function<void ()>) (
      thread_name="0\255\377\221\377\177\000\000\v\000\000\000\000\000\000\000TraceThread\000\000\000\000\000P\255\377\221\377\177\000\000\017\000\000\000\000\000\000\000util/thread.cpp\000\000\000\000\000\000\000\000\000\000ihB鵿6\000\000\000\000\000\000\000\000\260\255\377\221\377\177\000\000\277\211\321UUU\000\000p\324\304UUU\000\000\002\000\000\000\000\000\000\000\240xh\367\377\177\000\000\000\000\000\000\000\000\000\000]\340iUUU\000\000p\274\016VUU\000\000\000\000\000\000\000\000\000\000\300\303iUUU\000\000p\206jUUU", '\000' <repeats 11 times>, "ihB鵿6\200\251!VUU\000\000"..., thread_func=...) at util/thread.cpp:21
  #17 0x000055555569e05d in std::__invoke_impl<void, void (*)(std::basic_string_view<char>, std::function<void()>), char const*, CConnman::Start(CScheduler&, const Options&)::<lambda()> > (__f=<optimized out>) at /usr/include/c++/12/bits/invoke.h:61
  #18 std::__invoke<void (*)(std::basic_string_view<char>, std::function<void()>), char const*, CConnman::Start(CScheduler&, const Options&)::<lambda()> > (__fn=<optimized out>) at /usr/include/c++/12/bits/invoke.h:96
  #19 std::thread::_Invoker<std::tuple<void (*)(std::basic_string_view<char, std::char_traits<char> >, std::function<void()>), char const*, CConnman::Start(CScheduler&, const Options&)::<lambda()> > >::_M_invoke<0, 1, 2> (this=<optimized out>) at /usr/include/c++/12/bits/std_thread.h:252
  #20 std::thread::_Invoker<std::tuple<void (*)(std::basic_string_view<char, std::char_traits<char> >, std::function<void()>), char const*, CConnman::Start(CScheduler&, const Options&)::<lambda()> > >::operator() (this=<optimized out>) at /usr/include/c++/12/bits/std_thread.h:259
  #21 std::thread::_State_impl<std::thread::_Invoker<std::tuple<void (*)(std::basic_string_view<char, std::char_traits<char> >, std::function<void()>), char const*, CConnman::Start(CScheduler&, const Options&)::<lambda()> > > >::_M_run(void) (this=<optimized out>)
      at /usr/include/c++/12/bits/std_thread.h:210
  #22 0x00007ffff7ad43d3 in ?? () from /lib/x86_64-linux-gnu/libstdc++.so.6
  #23 0x00007ffff7687b27 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:435
  #24 0x00007ffff770a78c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81
  (gdb)
  ```

ACKs for top commit:
  MarcoFalke:
    review ACK e4be0e9 🏽

Tree-SHA512: d892d6264a284d952a68a8631a6301277373b8df939dafd9e2652f2f22ab60712cde63b90c27c67ea2d05f02443452e3e4e1b9f25479bfaca00d4c4de13b9fbd
dhruv pushed a commit that referenced this pull request Mar 20, 2023
05eeba2 [test] Add manual prune startup test case (dergoegge)
4517419 [util] Avoid integer overflow in CheckDiskSpace (dergoegge)

Pull request description:

  Starting a fresh node with `-prune=1` causes an integer overflow to happen in `CheckDiskSpace` ([here](https://github.com/bitcoin/bitcoin/blob/f7bdcfc83f5753349018be3b5a663c8923d1a5eb/src/init.cpp#L1633-L1648)) because `nPruneTarget` is to the max `uint64_t` value.
  ```
   node1 stderr util/system.cpp:138:51: runtime error: unsigned integer overflow: 52428800 + 18446744073709551615 cannot be represented in type 'unsigned long'
      #0 0x564a482b5088 in CheckDiskSpace(fs::path const&, unsigned long) src/./src/util/system.cpp:138:51
      #1 0x564a4728dc59 in AppInitMain(node::NodeContext&, interfaces::BlockAndHeaderTipInfo*) src/./src/init.cpp:1639:14
      #2 0x564a47256e6a in AppInit(node::NodeContext&, int, char**) src/./src/bitcoind.cpp:221:43
      #3 0x564a47256087 in main src/./src/bitcoind.cpp:265:13
      #4 0x7fcb7cbffd8f  (/lib/x86_64-linux-gnu/libc.so.6+0x29d8f) (BuildId: 69389d485a9793dbe873f0ea2c93e02efaa9aa3d)
      #5 0x7fcb7cbffe3f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e3f) (BuildId: 69389d485a9793dbe873f0ea2c93e02efaa9aa3d)
      #6 0x564a471957f4 in _start (/tmp/cirrus-ci-build/ci/scratch/build/bitcoin-x86_64-pc-linux-gnu/src/bitcoind+0xca07f4) (BuildId: 035cb22302d37317a630900a15a26ecb326d395c)
  SUMMARY: UndefinedBehaviorSanitizer: unsigned-integer-overflow util/system.cpp:138:51 in
  ```

  I think side stepping the overflow for this specific case, is better than adding an exception to the UB suppresions file.

ACKs for top commit:
  MarcoFalke:
    ACK 05eeba2 🥝
  john-moffett:
    ACK 05eeba2

Tree-SHA512: 1d8e6bcb49818139f04b5ab2cbef7f9b422bf0c38a804cd532b6bd0ba4c4fd07f959ba977e59896343f213086c8ecc48180f50d006638dc84649c66ec379d58a
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2 participants