[Bug 47624] New: Application crashes in socket communication (Regression)

https://bugs.winehq.org/show_bug.cgi?id=47624

Bug ID: 47624
           Summary: Application crashes in socket communication
                    (Regression)
           Product: Wine
           Version: 4.13
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 65058
  --> https://bugs.winehq.org/attachment.cgi?id=65058
Wine debug log +relay,+ntdll,+winsock

For several years we've been using Wine 1.7.18 on Lubuntu 13 (Linux 3.11.10)
with a proprietary 32-bit Windows application programmed in Delphi. It is
installed on small embedded PCs with AMD Geode LX processors at 500 MHz and 1
GB RAM and we have about 100 of these machines. After upgrading a test machine
to newer Linux distributions and Wine 4.x the application crashes in its
network functions. When booting the same hard drive via USB on a modern PC
everything works, so the bug might be driver related. (But it works on the
older kernel!)

The basic error is this (Wine 4.13 devel):

340728.035:0008:0009:Ret  KERNEL32.GetProcAddress() retval=7db174ac
ret=0041615c
340728.035:0008:0009:Call ws2_32.shutdown(000000dc,00000001) ret=0067ba05
340728.035:0008:0009:Call
ntdll.wine_server_handle_to_fd(000000dc,00000000,0033fac8,0033fac4)
ret=7db246cb
340728.035:0008:0009:Ret  ntdll.wine_server_handle_to_fd() retval=00000000
ret=7db246cb
340728.035:0008:0009:trace:winsock:WS_shutdown socket 00dc, how 0x1, options
0x0
340728.035:0008:0009:trace:winsock:WS2_register_async_shutdown socket 00dc type
2
340728.036:0008:0009:Call ntdll.RtlAllocateHeap(00110000,00000000,00000018)
ret=7db1a77a
340728.036:0008:0009:Ret  ntdll.RtlAllocateHeap() retval=001be6c0 ret=7db1a77a
340728.036:0008:0009:err:seh:setup_exception_record nested exception on signal
stack in thread 0009 eip 7bca93b9 esp 7ffdbae0 stack 0x242000-0x340000

Winedbg does not work. When attaching to the Windows process, the application
crashes and Winedbg says "Can't attach to process ... Error 5". Running the
application in Winedbg directly generates the above error message plus "Process
of pid=xxxx has terminated". There is no backtrace, the thread dies completely.

I have tried various Linux distributions using 4.x kernels (Bodhi Linux 5,
Linux Mint Debian Edition 3, Debian 9.9, Debian 10, Ubuntu 16.04) and also
tried Wine 2.0.2, which is the oldest available binary package, and everytime
the above error occurs. Building a custom Linux kernel for the machine also
didn't change anything. Trying to build Wine 1.7.18 on Debian 10 resulted in
several compile time errors that I am not able to fix, so I am stuck with
available binary packages.

Debugging and changing the Windows application itself managed to move the crash
from the first network connect to when the application is shutdown. Only widely
available network component libraries for Delphi were used (Indy and ICS),
there is no self-developed net code.

So, the same Windows executable works with Wine 1.7.13 on Linux 3.11, but it
crashes in Wine 4.x (I tried several packages from Ubuntu and Debian from
winehq) on modern 4.x Linux kernels on this machine.

Any ideas? I'm ready to provide more needed info.

Thomas