msan: Uninitialized bytes in read_iovec at offset 18 inside [0x7feba83b5a00, 34)

[maximyurchuk]

https://nda.ya.ru/t/qLK42Qce7CGmmG -- link to test

Uninitialized bytes in read_iovec at offset 18 inside [0x7feba83b5a00, 34)
==3176442==WARNING: MemorySanitizer: use-of-uninitialized-value
warning: address range table at offset 0x0 has a premature terminator entry at offset 0x10
warning: address range table at offset 0x30 has a premature terminator entry at offset 0x40
warning: address range table at offset 0x60 has a premature terminator entry at offset 0x70
warning: address range table at offset 0x90 has a premature terminator entry at offset 0xa0
warning: address range table at offset 0xc0 has a premature terminator entry at offset 0xd0
warning: address range table at offset 0x220 has a premature terminator entry at offset 0x230
warning: address range table at offset 0x280 has a premature terminator entry at offset 0x290
warning: address range table at offset 0x2b0 has a premature terminator entry at offset 0x2c0
warning: address range table at offset 0x8b0 has a premature terminator entry at offset 0x8c0
warning: address range table at offset 0x8e0 has a premature terminator entry at offset 0x8f0
warning: address range table at offset 0x910 has a premature terminator entry at offset 0x920
warning: address range table at offset 0x940 has a premature terminator entry at offset 0x950
warning: address range table at offset 0x970 has a premature terminator entry at offset 0x980
warning: address range table at offset 0x9a0 has a premature terminator entry at offset 0x9b0
warning: address range table at offset 0x9d0 has a premature terminator entry at offset 0x9e0
warning: address range table at offset 0xa00 has a premature terminator entry at offset 0xa10
warning: address range table at offset 0xa30 has a premature terminator entry at offset 0xa40
warning: address range table at offset 0xa60 has a premature terminator entry at offset 0xa70
warning: address range table at offset 0xa90 has a premature terminator entry at offset 0xaa0
warning: address range table at offset 0xac0 has a premature terminator entry at offset 0xad0
warning: address range table at offset 0xaf0 has a premature terminator entry at offset 0xb00
warning: address range table at offset 0xb20 has a premature terminator entry at offset 0xb30
warning: address range table at offset 0xb50 has a premature terminator entry at offset 0xb60
warning: address range table at offset 0xb80 has a premature terminator entry at offset 0xb90
warning: address range table at offset 0xbb0 has a premature terminator entry at offset 0xbc0
warning: address range table at offset 0xbe0 has a premature terminator entry at offset 0xbf0
warning: address range table at offset 0xc10 has a premature terminator entry at offset 0xc20
warning: address range table at offset 0xc70 has a premature terminator entry at offset 0xc80
warning: address range table at offset 0xca0 has a premature terminator entry at offset 0xcb0
warning: address range table at offset 0xcd0 has a premature terminator entry at offset 0xce0
warning: address range table at offset 0xd00 has a premature terminator entry at offset 0xd10
warning: address range table at offset 0xd30 has a premature terminator entry at offset 0xd40
warning: address range table at offset 0xd60 has a premature terminator entry at offset 0xd70
warning: address range table at offset 0xd90 has a premature terminator entry at offset 0xda0
    #0 0x1755570d in writev /home/tesseract/git/ydb/contrib/libs/clang18-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:1157:16
    #1 0x39c5dde5 in NInterconnect::TStreamSocket::WriteV(iovec const*, int) const /home/tesseract/git/ydb/ydb/library/actors/interconnect/interconnect_stream.cpp:135:26
    #2 0x39cf02e2 in NActors::TInterconnectSessionTCP::Write(NInterconnect::TOutgoingStreamT<262144ul>&, NInterconnect::TStreamSocket&, unsigned long) /home/tesseract/git/ydb/ydb/library/actors/interconnect/interconnect_tcp_session.cpp:731:36
    #3 0x39cef620 in NActors::TInterconnectSessionTCP::WriteData()::$_0::operator()(NInterconnect::TOutgoingStreamT<262144ul>&, TIntrusivePtr<NInterconnect::TStreamSocket, TDefaultIntrusivePtrOps<NInterconnect::TStreamSocket>> const&, TIntrusivePtr<NActors::TPollerToken, TDefaultIntrusivePtrOps<NActors::TPollerToken>> const&, bool*, unsigned long) const /home/tesseract/git/ydb/ydb/library/actors/interconnect/interconnect_tcp_session.cpp:608:43
    #4 0x39cec09d in NActors::TInterconnectSessionTCP::WriteData() /home/tesseract/git/ydb/ydb/library/actors/interconnect/interconnect_tcp_session.cpp:652:30
    #5 0x39ce650d in NActors::TInterconnectSessionTCP::GenerateTraffic() /home/tesseract/git/ydb/ydb/library/actors/interconnect/interconnect_tcp_session.cpp:415:13
    #6 0x39ceaeeb in NActors::TInterconnectSessionTCP::HandleRam(TAutoPtr<NActors::TEventHandle<NActors::TInterconnectSessionTCP::TEvRam>, TDelete>&) /home/tesseract/git/ydb/ydb/library/actors/interconnect/interconnect_tcp_session.cpp:391:13
    #7 0x39cce59d in NActors::TInterconnectSessionTCP::StateFunc(TAutoPtr<NActors::IEventHandle, TDelete>&) /home/tesseract/git/ydb/ydb/library/actors/interconnect/interconnect_tcp_session.h:447:13
    #8 0x19a4940e in NActors::TExecutorThread::Execute(NActors::TMailbox*, bool) /home/tesseract/git/ydb/ydb/library/actors/core/executor_thread.cpp:269:28
    #9 0x19a520fb in NActors::TExecutorThread::ProcessExecutorPool()::$_0::operator()(NActors::TMailbox*, bool) const /home/tesseract/git/ydb/ydb/library/actors/core/executor_thread.cpp:460:39
    #10 0x19a517ac in NActors::TExecutorThread::ProcessExecutorPool() /home/tesseract/git/ydb/ydb/library/actors/core/executor_thread.cpp:512:13
    #11 0x19a53472 in NActors::TExecutorThread::ThreadProc() /home/tesseract/git/ydb/ydb/library/actors/core/executor_thread.cpp:538:9
    #12 0x17863e33 in (anonymous namespace)::TPosixThread::ThreadProxy(void*) /home/tesseract/git/ydb/util/system/thread.cpp:244:20
    #13 0x7fec10db5608 in start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x8608) (BuildId: 0c044ba611aeeeaebb8374e660061f341ebc0bac)
    #14 0x7fec10cda352 in __clone (/lib/x86_64-linux-gnu/libc.so.6+0x11f352) (BuildId: eebe5d5f4b608b8a53ec446b63981bba373ca0ca)

SUMMARY: MemorySanitizer: use-of-uninitialized-value /home/tesseract/git/ydb/contrib/libs/clang18-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc:1157:16 in writev
Exiting
Determined node ID: 8
configured
Starting Kikimr r-1 built by tesseract
UDFsDir is not specified, no dynamic UDFs will be loaded.