[Bug 59726] New: Syscall emulation on Linux using Syscall User Dispatch broken with glibc 2.34

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59726

            Bug ID: 59726
           Summary: Syscall emulation on Linux using Syscall User Dispatch
                    broken with glibc 2.34
           Product: Wine
           Version: 11.8
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: ntdll
          Assignee: [e-mail]
          Reporter: [e-mail]
   Regression SHA1: cbb9906d75346c9ca9be8ac0b3ddb06d9d48824d
      Distribution: ---

Created attachment 80872
  --> http://bugs.winehq.org/attachment.cgi?id=80872
VisualStudioSetup.exe

After initializing the Visual Studio installer
(https://visualstudio.microsoft.com) under Wine 11.8, execution stops. I
managed to identify that the cause is this commit:

cbb9906d75346c9ca9be8ac0b3ddb06d9d48824d is the first bad commit
commit cbb9906d75346c9ca9be8ac0b3ddb06d9d48824d (HEAD)
Author: Elizabeth Figura [e-mail]
Date: Fri Mar 13 16:25:41 2026 -0500

ntdll: Implement syscall emulation on Linux using Syscall User Dispatch.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=48291

dlls/ntdll/tests/exception.c | 1 -
dlls/ntdll/unix/signal_x86_64.c | 71
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-----------
2 files changed, 60 insertions(+), 12 deletions(-)

As I understand it, the reason for this behavior is the merging of libpthread,
libdl, libutil, libanl into libc in version 2.34
(https://sourceware.org/pipermail/libc-alpha/2021-August/129718.html). I am
running with libc version 2.32.

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[Bug 59726] Syscall emulation on Linux using Syscall User Dispatch broken with glibc 2.34

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59726

--- Comment #1 from [e-mail] <[e-mail]> ---
Created attachment 80873
  --> http://bugs.winehq.org/attachment.cgi?id=80873
Disable syscall user dispatch on glibc older than 2.34

This patch helped me

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[Bug 59726] Syscall emulation on Linux using Syscall User Dispatch broken with glibc 2.34

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59726

[e-mail] <[e-mail]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |regression

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[Bug 59726] Syscall emulation on Linux using Syscall User Dispatch broken with glibc 2.34

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59726

Zeb Figura <[e-mail]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[e-mail]

--- Comment #2 from Zeb Figura <[e-mail]> ---
I can't seem to run the installer; I get 'Unable to download installation
files. Check your internet connection and try again.'

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[Bug 59726] Syscall emulation on Linux using Syscall User Dispatch broken with glibc 2.34

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59726

--- Comment #3 from [e-mail] <[e-mail]> ---
Created attachment 80881
  --> http://bugs.winehq.org/attachment.cgi?id=80881
Paint.NET

Maybe this app will help you. It also doesn't work for me.

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[Bug 59726] Syscall emulation on Linux using Syscall User Dispatch broken with glibc 2.34

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59726

--- Comment #4 from Zeb Figura <[e-mail]> ---
Please don't attach executables here you don't have permission to redistribute.

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[Bug 59726] Syscall emulation on Linux using Syscall User Dispatch broken with glibc 2.34

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59726

--- Comment #5 from Zeb Figura <[e-mail]> ---
How exactly did you get visual studio to run? Did you use external patches or
winetricks verbs?

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[Bug 59726] Syscall emulation on Linux using Syscall User Dispatch broken with glibc 2.34

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59726

--- Comment #6 from Alexandre Julliard <[e-mail]> ---
The content of attachment 80872 has been deleted for the following reason:

Copyright violation

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[Bug 59726] Syscall emulation on Linux using Syscall User Dispatch broken with glibc 2.34

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59726

--- Comment #7 from [e-mail] <[e-mail]> ---
(In reply to Zeb Figura from comment #5)
> How exactly did you get visual studio to run? Did you use external patches
> or winetricks verbs?

What helped me was adding an additional condition check in the libc_addr_cb
function (dlls/ntdll/unix/signal_x86_64.c):

if (strcmp(p, "libc.so.6") && strcmp(p, "libpthread.so.0"))
    return 0;

I also found that setting static LONG syscall_dispatch_enabled = false; was
helpful.

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[Bug 59726] Syscall emulation on Linux using Syscall User Dispatch broken with glibc 2.34

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59726

--- Comment #8 from Zeb Figura <[e-mail]> ---
It won't run for me even after disabling syscall emulation. I get the error
mentioned in comment 2.

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[Bug 59726] Syscall emulation on Linux using Syscall User Dispatch broken with glibc 2.34

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59726

--- Comment #9 from [e-mail] <[e-mail]> ---
(In reply to Zeb Figura from comment #8)
> It won't run for me even after disabling syscall emulation. I get the error
> mentioned in comment 2.

What if I try installing paint.net? This program also causes the same problem
for me.

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[Bug 59726] Syscall emulation on Linux using Syscall User Dispatch broken with glibc 2.34

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59726

--- Comment #10 from [e-mail] <[e-mail]> ---
(In reply to [e-mail] from comment #9)
> (In reply to Zeb Figura from comment #8)
> > It won't run for me even after disabling syscall emulation. I get the error
> > mentioned in comment 2.
>
> What if I try installing paint.net?

*Have you tried installing paint.net?

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