Ceph » Messengers

This was found in an rgw teuthology run: http://qa-proxy.ceph.com/teuthology/yuriw-2023-02-16_22:47:08-rgw-wip-yuri4-testing-2023-02-16-0845-quincy-distro-default-smithi/7177316/ .

In the valgrind log found at: http://qa-proxy.ceph.com/teuthology/yuriw-2023-02-16_22:47:08-rgw-wip-yuri4-testing-2023-02-16-0845-quincy-distro-default-smithi/7177316/remote/smithi101/log/valgrind/ and attached to this tracker.

Do not know if this happens on main or on pacific. Do not know whether backports are needed.

Here's a bit of the first error:

<error>
  <unique>0x109f9</unique>
  <tid>6</tid>
  <threadname>msgr-worker-2</threadname>
  <kind>SyscallParam</kind>
  <what>Syscall param sendmsg(msg.msg_iov[4]) points to uninitialised byte(s)</what>
  <stack>
    <frame>
      <ip>0x85BFA27</ip>
      <obj>/usr/lib64/libpthread-2.28.so</obj>
      <fn>sendmsg</fn>
    </frame>
    <frame>
      <ip>0x7B37E73</ip>
      <obj>/usr/lib64/ceph/libceph-common.so.2</obj>
      <fn>PosixConnectedSocketImpl::send(ceph::buffer::v15_2_0::list&amp;, bool)</fn>
    </frame>
    <frame>
      <ip>0x7AD25D2</ip>
      <obj>/usr/lib64/ceph/libceph-common.so.2</obj>
      <fn>AsyncConnection::_try_send(bool)</fn>
    </frame>
    <frame>
      <ip>0x7B0B543</ip>
      <obj>/usr/lib64/ceph/libceph-common.so.2</obj>
      <fn>ProtocolV2::write_message(Message*, bool)</fn>
    </frame>
    <frame>
      <ip>0x7B213BA</ip>
      <obj>/usr/lib64/ceph/libceph-common.so.2</obj>
      <fn>ProtocolV2::write_event()</fn>
    </frame>
    <frame>
      <ip>0x7B32293</ip>
      <obj>/usr/lib64/ceph/libceph-common.so.2</obj>
      <fn>EventCenter::process_events(unsigned int, std::chrono::duration&lt;unsigned long, std::ratio&lt;1l, 1000000000l&gt; &gt;*)</fn>
    </frame>
    <frame>
      <ip>0x7B39B65</ip>
      <obj>/usr/lib64/ceph/libceph-common.so.2</obj>
    </frame>
    <frame>
      <ip>0x9586BA2</ip>
      <obj>/usr/lib64/libstdc++.so.6.0.25</obj>
    </frame>
    <frame>
      <ip>0x85B51C9</ip>
      <obj>/usr/lib64/libpthread-2.28.so</obj>
      <fn>start_thread</fn>
    </frame>
    <frame>
      <ip>0x9E2CE72</ip>
      <obj>/usr/lib64/libc-2.28.so</obj>
      <fn>clone</fn>
    </frame>
  </stack>