[Bug 49746] New: crash when virtual debug channel is enabled

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49746

Bug ID: 49746
           Summary: crash when virtual debug channel is enabled
           Product: Wine
           Version: 5.15
          Hardware: x86
                OS: Linux
            Status: NEW
          Keywords: regression
          Severity: normal
          Priority: P2
         Component: ntdll
          Assignee: [e-mail]
          Reporter: [e-mail]
   Regression SHA1: 4a7cd0f492affbc0eb347b97426b8c23f9a4f976
      Distribution: ---

Steps to reproduce:
WINEDBG=virtual wine winecfg

After running the command it starts printing debug traces and crashes with
"Segmentation fault" output. I've done the regression test with 32-bit wine but
there's identical crash on x86_64.

Bisect points to this commit:
4a7cd0f492affbc0eb347b97426b8c23f9a4f976 is the first bad commit
commit 4a7cd0f492affbc0eb347b97426b8c23f9a4f976
Author: Alexandre Julliard 
Date:   Thu Aug 20 15:27:30 2020 +0200

ntdll: Call NtContinue() from LdrInitializeThunk() instead of returning.

Signed-off-by: Alexandre Julliard

[Bug 49746] crash when virtual debug channel is enabled

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49746

Stefan Dösinger  changed:

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

--- Comment #1 from Stefan Dösinger  ---
For me it crashes without any debug channels.

stefan@grey ~/src/wine $ WINEDEBUG=-all ~/build/wine/wine winecfg
Segmentation fault (core dumped)

gdb says:
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7bc21b8 in server_leave_uninterrupted_section (mutex=0x7ffff7c19e40
<virtual_mutex>, sigset=0x21f7e0)
    at ../../../../src/wine/dlls/ntdll/unix/server.c:309
309     {

(gdb) bt
#0  0x00007ffff7bc21b8 in server_leave_uninterrupted_section
(mutex=0x7ffff7c19e40 <virtual_mutex>, sigset=0x21f7e0)
    at ../../../../src/wine/dlls/ntdll/unix/server.c:309
#1  0x0000000000000000 in ?? ()

[Bug 49746] crash when virtual debug channel is enabled

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49746

Fabian Maurer  changed:

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

[Bug 49746] crash when virtual debug channel is enabled

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49746

Piotr Caban  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED
      Fixed by SHA1|                            |3863b243fe5ef4e223a809e93a8
                   |                            |5e858952dd754.

--- Comment #2 from Piotr Caban  ---
It works for me now. Marking as fixed.

[Bug 49746] crash when virtual debug channel is enabled

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49746

Piotr Caban  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
      Fixed by SHA1|3863b243fe5ef4e223a809e93a8 |3863b243fe5ef4e223a809e93a8
                   |5e858952dd754.              |5e858952dd754

[Bug 49746] crash when virtual debug channel is enabled

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49746

Alexandre Julliard  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED

--- Comment #3 from Alexandre Julliard  ---
Closing bugs fixed in 5.16.