Description of problem (please be detailed as possible and provide log
snippests):

one monitor pod crashed with below trace:

{
    "crash_id": "2023-08-04T21:01:11.604927Z_aeede7d0-05ed-4104-91a9-d8d846e80497",
    "timestamp": "2023-08-04T21:01:11.604927Z",
    "process_name": "ceph-mon",
    "entity_name": "mon.a",
    "ceph_version": "16.2.10-138.el8cp",
    "utsname_hostname": "rook-ceph-mon-a-66d458c45b-74npw",
    "utsname_sysname": "Linux",
    "utsname_release": "4.18.0-372.52.1.el8_6.x86_64",
    "utsname_version": "#1 SMP Fri Mar 31 06:22:44 EDT 2023",
    "utsname_machine": "x86_64",
    "os_name": "Red Hat Enterprise Linux",
    "os_id": "rhel",
    "os_version_id": "8.7",
    "os_version": "8.7 (Ootpa)",
    "backtrace": [
        "/lib64/libpthread.so.0(+0x12cf0) [0x7fe72ba73cf0]",
        "(MonitorDBStore::get_synchronizer(std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >&, std::set<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::less<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >&)+0x41) [0x562ce5913671]",
        "(Monitor::_scrub(ScrubResult*, std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >*, int*)+0x20f) [0x562ce58cd22f]",
        "(Monitor::scrub()+0x3b8) [0x562ce58d20c8]",
        "(Monitor::scrub_start()+0x148) [0x562ce58d22d8]",
        "(Context::complete(int)+0xd) [0x562ce58f5a7d]",
        "(CommonSafeTimer<std::mutex>::timer_thread()+0x10f) [0x7fe72de2ed0f]",
        "(CommonSafeTimerThread<std::mutex>::entry()+0x11) [0x7fe72de300a1]",
        "/lib64/libpthread.so.0(+0x81ca) [0x7fe72ba691ca]",
        "clone()"
    ]
}

Version of all relevant components (if applicable):

OCP: 4.11
ODF: 4.11
Ceph: 16.2.10-138.el8cp

Does this issue impact your ability to continue to work with the product
(please explain in detail what is the user impact)?
No




Can this issue reproducible?
No

Can this issue reproduce from the UI?
NA




Actual results:
- Monitor pod crashed.

Expected results:
- Monitor pod crashed and restarted,however customer is looking for RCA. I couldn't find any downstream BZ to explain this specific trace therefore I need help from engineering.

- I see there is a tracker with similar issue reported.
https://tracker.ceph.com/issues/49809

Additional info: