shutdown ignored in ssl_tls_accept

[matt335672]

xrdp version

0.10.x

Detailed xrdp version, build options

xrdp 0.10.3
  A Remote Desktop Protocol Server.
  Copyright (C) 2004-2025 Jay Sorg, Neutrino Labs, and all contributors.
  See https://github.com/neutrinolabs/xrdp for more information.

  Configure options:
      --disable-devel-all
      --enable-fuse
      --enable-pixman
      --enable-ipv6
      --enable-painter
      --enable-jpeg
      --with-imlib2
      --enable-vsock
      --with-freetype2
      --enable-ibus
      --enable-x264
      --enable-openh264
      --enable-utmp
      --with-libpcsclite
      --enable-neutrinordp
      CC=gcc
      CFLAGS=-g -fvar-tracking -Wl,-z,now -Wno-error=deprecated-declarations

  Compiled with OpenSSL 3.0.13 30 Jan 2024

Operating system & version

Ubuntu 24.04

Installation method

git clone & make install

Which backend do you use?

N/A

What desktop environment do you use?

N/A

Environment xrdp running on

Nested VM

What's your client?

Remmina

Area(s) with issue?

Other

Steps to reproduce

1. sudo systemctl start xrdp
2. Connect from Remmina:-

3. Debugger shows child xrdp in ssl_tls_accept():-

(gdb) where
#0  0x000072b63031b494 in __GI___poll (fds=fds@entry=0x7ffddfc18950, nfds=nfds@entry=1, timeout=timeout@entry=100)
    at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x000072b630b2081a in poll (__timeout=<optimized out>, __nfds=1, __fds=0x7ffddfc18950)
    at /usr/include/x86_64-linux-gnu/bits/poll2.h:39
#2  g_sck_can_recv (sck=<optimized out>, millis=millis@entry=100) at os_calls.c:1605
#3  0x000072b630b24ba0 in ssl_tls_accept (self=0x5d19ee7ef300, ssl_protocols=ssl_protocols@entry=369098752, 
    tls_ciphers=tls_ciphers@entry=0x0) at ssl_calls.c:1210
#4  0x000072b630b27d81 in trans_set_tls_mode (self=0x5d19ee7eb460, key=<optimized out>, cert=<optimized out>, 
    ssl_protocols=369098752, tls_ciphers=0x0) at trans.c:1056
#5  0x000072b630af737a in xrdp_sec_incoming (self=0x5d19ee7ed2e0) at xrdp_sec.c:2525
#6  0x000072b630af2cbc in xrdp_rdp_incoming (self=0x5d19ee7eb680) at xrdp_rdp.c:943
#7  0x000072b630ad7d9d in libxrdp_process_incoming (session=<optimized out>) at libxrdp.c:87
#8  0x00005d19cfb976a8 in xrdp_process_main_loop (self=self@entry=0x5d19ee7e45f0) at xrdp_process.c:248
#9  0x00005d19cfb8a8bb in xrdp_process_run (in_val=0x0) at xrdp_listen.c:153
#10 xrdp_listen_fork (server_trans=0x5d19ee7eb460, self=0x5d19ee7e48c0) at xrdp_listen.c:714
#11 xrdp_listen_main_loop (self=0x5d19ee7e48c0) at xrdp_listen.c:888
#12 0x00005d19cfb81adf in main (argc=<optimized out>, argv=<optimized out>) at xrdp.c:778

4. sudo systemctl stop xrdp hangs, as child xrdp ignores signal.

✔️ Expected Behavior

systemctl stop completes.

❌ Actual Behavior

systemctl stop hangs.

Anything else?

No response

[matt335672]

I'll look at this the week after next, unless someone else picks it up.