I guess the # turned into links, sorry about that.

Here's the same log in a file https://0x0.st/H-W_.dump.

Hello! I am using Howdy for facial authentication using an IR camera on my laptop.

I also use greetd+ReGreet as my Display Manager, which is working great.

However, when Howdy fails to recognize my face, the ReGreet UI freezes. We (Harish Rajagopal and I) have figured out it is not ReGreet getting freezes, but greetd. You can read the conversation here.

I am attaching the coredump of greetd, which I got by running coredumpctl info greetd -S today:

           PID: 126161 (greetd)
           UID: 0 (root)
           GID: 0 (root)
        Signal: 6 (ABRT)
     Timestamp: Sun 2023-03-19 00:22:24 EET (13min ago)
  Command Line: /nix/store/6gq7rm8bil7n6l53wcygyqy6arn007ha-greetd-0.8.0/bin/greetd --session-worker 12
    Executable: /nix/store/6gq7rm8bil7n6l53wcygyqy6arn007ha-greetd-0.8.0/bin/greetd
 Control Group: /system.slice/greetd.service
          Unit: greetd.service
         Slice: system.slice
       Boot ID: 61e83d899d4847f8b0e61b0ffb68a1af
    Machine ID: 20973b6ad9b7467586c81b604444befa
      Hostname: io
       Storage: /var/lib/systemd/coredump/core.greetd.0.61e83d899d4847f8b0e61b0ffb68a1af.126161.1679178144000000.zst (inaccessible)
       Message: Process 126161 (greetd) of user 0 dumped core.
                
                Module pam_warn.so without build-id.
                Module libffi.so.8 without build-id.
                Module libp11-kit.so.0 without build-id.
                Module libcap.so.2 without build-id.
                Module pam_systemd.so without build-id.
                Module pam_loginuid.so without build-id.
                Module pam_env.so without build-id.
                Module pam_deny.so without build-id.
                Module pam_gnupg.so without build-id.
                Module libinih.so.0 without build-id.
                Module libstdc++.so.6 without build-id.
                Module libevdev.so.2 without build-id.
                Module libINIReader.so.0 without build-id.
                Module pam_howdy.so without build-id.
                Module libcrypt.so.1 without build-id.
                Module pam_unix.so without build-id.
                Module libaudit.so.1 without build-id.
                Module libgcc_s.so.1 without build-id.
                Module libpam_misc.so.0 without build-id.
                Module libpam.so.0 without build-id.
                Module greetd without build-id.
                Stack trace of thread 126161:
                #0  0x00007f73b848abc7 __pthread_kill_implementation (libc.so.6 + 0x8abc7)
                #1  0x00007f73b843db46 raise (libc.so.6 + 0x3db46)
                #2  0x00007f73b84284b5 abort (libc.so.6 + 0x284b5)
                #3  0x00007f73b80a9a89 _ZN9__gnu_cxx27__verbose_terminate_handlerEv.cold (libstdc++.so.6 + 0xa9a89)
                #4  0x00007f73b80b4f0a _ZN10__cxxabiv111__terminateEPFvvE (libstdc++.so.6 + 0xb4f0a)
                #5  0x00007f73b80b4f75 _ZSt9terminatev (libstdc++.so.6 + 0xb4f75)
                #6  0x00007f73b80b51c7 __cxa_throw (libstdc++.so.6 + 0xb51c7)
                #7  0x00007f73b80ac756 _ZSt20__throw_system_errori (libstdc++.so.6 + 0xac756)
                #8  0x00007f73b80e05c0 _ZNSt6thread4joinEv (libstdc++.so.6 + 0xe05c0)
                #9  0x00007f73b86b3d46 _Z8identifyP10pam_handleiiPPKcb (pam_howdy.so + 0xcd46)
                #10 0x00007f73b8769cbe _pam_dispatch (libpam.so.0 + 0x3cbe)
                #11 0x00007f73b876966f pam_authenticate (libpam.so.0 + 0x366f)
                #12 0x00005644a9e5ba41 _ZN6greetd4main28_$u7b$$u7b$closure$u7d$$u7d$17h220da801a4c25d49E (greetd + 0x2ea41)
                #13 0x00005644a9e57397 _ZN6greetd4main17h75a23768bd6843e3E (greetd + 0x2a397)
                #14 0x00005644a9e3fed4 _ZN3std10sys_common9backtrace28__rust_begin_short_backtrace17h7bf8c7c098f4166dE (greetd + 0x12ed4)
                #15 0x00005644a9e5f531 main (greetd + 0x32531)
                #16 0x00007f73b842924e __libc_start_call_main (libc.so.6 + 0x2924e)
                #17 0x00007f73b8429309 __libc_start_main@@GLIBC_2.34 (libc.so.6 + 0x29309)
                #18 0x00005644a9e3bdd5 _start (greetd + 0xedd5)
                ELF object binary architecture: AMD x86-64