The bt full of gdb seems to indicate that systemd chokes on a unit file. I bet it is clamav-freshclam. I am going to reboot now.

  (gdb) bt full
  #0  0x00007fec4596675b in kill () at ../sysdeps/unix/syscall-template.S:120
  No locals.
  #1  0x000055d907cfab1c in crash (sig=11) at ../src/core/main.c:257
        sa = {__sigaction_handler = {sa_handler = 0x0, sa_sigaction = 0x0}, sa_mask = {__val = {0 }},
          sa_flags = 0, sa_restorer = 0x0}
        pid = 
        __func__ = "crash"
        __PRETTY_FUNCTION__ = "crash"
  #2  
  No locals.
  #3  0x000055d907d74d73 in unit_active_state (u=) at ../src/core/unit.c:830
        __PRETTY_FUNCTION__ = "unit_active_state"
  #4  0x000055d907d84d86 in unit_may_gc (u=0x55d908ddfa00) at ../src/core/unit.c:392
        state = 
        r = 
        __PRETTY_FUNCTION__ = 
        __func__ = 
  #5  0x000055d907d739fe in unit_may_gc (u=0x55d908ddfa00) at ../src/core/unit.c:389
        state = 
        r = 
        __PRETTY_FUNCTION__ = 
        __func__ = 
        _found = 
        __assert_in_set = 
        _error = 
        _u = 
        _l = 
  #6  unit_add_to_gc_queue (u=0x55d908ddfa00) at ../src/core/unit.c:468
        __PRETTY_FUNCTION__ = "unit_add_to_gc_queue"
  #7  0x000055d907d85ab1 in unit_clear_dependencies (u=0x55d908da3000) at ../src/core/unit.c:555
        other_deps = 0x0
        other = 0x55d908ddfa00
        deps = 0x55d908dc4878
        __PRETTY_FUNCTION__ = 
  #8  unit_free (u=0x55d908da3000) at ../src/core/unit.c:698
        slice = 0x55d908cb92a0
        t = 0x0
        __PRETTY_FUNCTION__ = 
  #9  0x000055d907d45d05 in unit_free (u=) at ../src/core/unit.c:654
        slice = 
        t = 
        __PRETTY_FUNCTION__ = 
        __unique_prefix_i15 = 
        j = 
        j = 
        _head = 
        _item = 
        _head = 
        _item = 
        _head = 
        _item = 
        _head = 
        _item = 
        _head = 
        _item = 
        _head = 
        _item = 
        _head = 
        _item = 
        _head = 
        _item = 
        _head = 
        _item = 
        _head = 
        _item = 
        _head = 
        _item = 
        _head = 
        _item = 
  #10 manager_clear_jobs_and_units (m=m@entry=0x55d908cb78f0) at ../src/core/manager.c:1421
        u = 
        __PRETTY_FUNCTION__ = 
  #11 0x000055d907d4b01a in manager_clear_jobs_and_units (m=0x55d908cb78f0) at ../src/core/manager.c:1418
        u = 
        __PRETTY_FUNCTION__ = 
  #12 manager_reload (m=0x55d908cb78f0) at ../src/core/manager.c:3826
        reloading = 0x0
        fds = 0x7fec45112ba8
        f = 0x55d908f6c940
        r = 
        __PRETTY_FUNCTION__ = "manager_reload"
        __func__ = "manager_reload"
  #13 0x000055d907cf9a7b in invoke_main_loop (ret_error_message=0x7ffd4b3057f0, ret_switch_root_init=,
    ret_switch_root_dir=, ret_fds=0x7ffd4b3057e0, ret_shutdown_verb=,
    ret_retval=, ret_reexecute=, saved_rlimit_memlock=0x7ffd4b305820,
    saved_rlimit_nofile=0x7ffd4b305830, m=0x55d908cb78f0) at ../src/core/main.c:1934
        saved_log_target = 
        saved_log_level = 
        r = 
        r = 
        __PRETTY_FUNCTION__ = 
        __func__ = 
        _error = 
        _level = 
        _e = 
        saved_log_target = 
        saved_log_level = 
        _level = 
        _e = 
        _level = 
        _e = 
        _level = 
        _e = 
        _ptr_ = 
        _ptr_ = 
        _level = 
        _e = 
        table = 
        _level = 
        _e = 
  #14 main (argc=1, argv=0x7ffd4b305ab8) at ../src/core/main.c:2910
        initrd_timestamp = {realtime = 0, monotonic = 0}
        userspace_timestamp = {realtime = 1726568591653978, monotonic = 37908672}
        kernel_timestamp = {realtime = 1726568553745306, monotonic = 0}
        security_start_timestamp = {realtime = 1726568591655330, monotonic = 37910024}
        security_finish_timestamp = {realtime = 1726568591655914, monotonic = 37910609}
        saved_rlimit_nofile = {rlim_cur = 1024, rlim_max = 4096}
        saved_rlimit_memlock = {rlim_cur = 65536, rlim_max = 65536}
        skip_setup = 
        loaded_policy = false
        queue_default_job = 
        first_boot = 
        reexecute = false
        switch_root_dir = 0x0
        switch_root_init = 0x0
        before_startup = 
        after_startup = 
        timespan = "\000\000\000\000\000\000\000\000\000\303t\255\211[\367\r\000\000\000\000\000\000\000\000\310\375\377\377\377\377\377\377\002", '\000' , "\002\000\000\000\000\000\000\000\006\000\000\000\000\000\000\200"
        shutdown_verb = 0x0
        error_message = 0x0
        r = 
        retval = 1
        m = 0x55d908cb78f0
        fds = 0x0
        finish = 
        systemd = "systemd"
        __func__ = "main"
        __PRETTY_FUNCTION__ = "main"
        _head = 
        _item = 
        _head = 
        _item = 
        _head = 
        _item = 
        _head = 
        _item = 
        _head = 

        _item = 
        _head = 
        _item = 
        _head = 
        _item = 
        _head = 
        _item = 
        _head = 
        _item = 
        _head = 
        _item = 
  #10 manager_clear_jobs_and_units (m=m@entry=0x55d908cb78f0) at ../src/core/manager.c:1421
        u = 
        __PRETTY_FUNCTION__ = 
  #11 0x000055d907d4b01a in manager_clear_jobs_and_units (m=0x55d908cb78f0) at ../src/core/manager.c:1418
        u = 
        __PRETTY_FUNCTION__ = 
  #12 manager_reload (m=0x55d908cb78f0) at ../src/core/manager.c:3826
        reloading = 0x0
        fds = 0x7fec45112ba8
        f = 0x55d908f6c940
        r = 
        __PRETTY_FUNCTION__ = "manager_reload"
        __func__ = "manager_reload"
  #13 0x000055d907cf9a7b in invoke_main_loop (ret_error_message=0x7ffd4b3057f0, ret_switch_root_init=,
    ret_switch_root_dir=, ret_fds=0x7ffd4b3057e0, ret_shutdown_verb=,
    ret_retval=, ret_reexecute=, saved_rlimit_memlock=0x7ffd4b305820,
    saved_rlimit_nofile=0x7ffd4b305830, m=0x55d908cb78f0) at ../src/core/main.c:1934
        saved_log_target = 
        saved_log_level = 
        r = 
        r = 
        __PRETTY_FUNCTION__ = 
        __func__ = 
        _error = 
        _level = 
        _e = 
        saved_log_target = 
        saved_log_level = 
        _level = 
        _e = 
        _level = 
        _e = 
        _level = 
        _e = 
        _ptr_ = 
        _ptr_ = 
        _level = 
        _e = 
        table = 
        _level = 
        _e = 
  #14 main (argc=1, argv=0x7ffd4b305ab8) at ../src/core/main.c:2910
        initrd_timestamp = {realtime = 0, monotonic = 0}
        userspace_timestamp = {realtime = 1726568591653978, monotonic = 37908672}
        kernel_timestamp = {realtime = 1726568553745306, monotonic = 0}
        security_start_timestamp = {realtime = 1726568591655330, monotonic = 37910024}
        security_finish_timestamp = {realtime = 1726568591655914, monotonic = 37910609}
        saved_rlimit_nofile = {rlim_cur = 1024, rlim_max = 4096}
        saved_rlimit_memlock = {rlim_cur = 65536, rlim_max = 65536}
        skip_setup = 
        loaded_policy = false
        queue_default_job = 
        first_boot = 
        reexecute = false
        switch_root_dir = 0x0
        switch_root_init = 0x0
        before_startup = 
        after_startup = 
        timespan = "\000\000\000\000\000\000\000\000\000\303t\255\211[\367\r\000\000\000\000\000\000\000\000\310\375\377\377\377\377\377\377\002", '\000' , "\002\000\000\000\000\000\000\000\006\000\000\000\000\000\000\200"
        shutdown_verb = 0x0
        error_message = 0x0
        r = 
        retval = 1
        m = 0x55d908cb78f0
        fds = 0x0
        finish = 
        systemd = "systemd"
        __func__ = "main"
        __PRETTY_FUNCTION__ = "main"

The server has ECC memory and there are no messages in the syslog about ECC failures. The SEGV occurred on two consecutive days when systemd was reloading so for the moment I find it unlikely that memory may be the root cause but looking at a core dump would certainly help. Where is it?

Comments URL: https://news.ycombinator.com/item?id=41578325

Points: 3

# Comments: 5

Bitcoin is 1st generation blockchain technology and compared to current 3rd generation (e.g. XRP) it is slow and expensive.

IMF, BIS, ECB and FED have stated in political obfuscated speak that they want a fast and cheap bridge currency for cross-border payments. There is only one serious candidate for this: XRP.

The coverage is calculated by DNS servers and web proxies and can only be incorrect if circumvented. The web proxies are almost all in corporate environments where they cannot be circumvented. Only a tiny fraction of HTTPS uses a TLS1.3 extension to encrypt the FQDN of the web server - the rest of the HTTPS traffic can be monitored.

The company exists for 15 years, is run by two persons and the yearly sales of URL filtering solutions is less than USD 250,000. The assets are a URL database with 53 categories and content categorisation bots with two AI engines. The URL database has "only" 16.9 million entries but covers 99.77% of all URLs used by a large Telecom in the USA. The coverage percentage varies; it depends on country and client type and is for some clients 99.90% or even 99.99%.

We consider to sell the company and start a new business in agriculture. The "burning" question is how to determine the value of the URL database and the categorisation bots, and ultimately determine a reasonable/just asking price for the company.

Thank you for suggestions.

Comments URL: https://news.ycombinator.com/item?id=27116376

Points: 6

# Comments: 5