[Bug 53626] New: Wine crash due to long filename when saving file in Framemaker

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=53626

Bug ID: 53626
           Summary: Wine crash due to long filename when saving file in
                    Framemaker
           Product: Wine
           Version: 7.16
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: win32u
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

When saving a file with a long filename (more than 28 chars) in Framemaker wine
crashes (not the application, wine itself including wineserver).

A bisect shows this commit as cause

commit 0ad2db66a109b4c0a46d04ff8231706fff540941
Author: Jacek Caban 
Date:   Sun Aug 14 20:49:53 2022 +0200

win32u: Pack messages sent directly from win32u.

Instead of leaking kernel pointers.

dlls/win32u/message.c        | 216 +++++++++++++++++++++++++++++++++++++++++--
 dlls/win32u/ntuser_private.h |   9 --
 2 files changed, 208 insertions(+), 17 deletions(-)

Reverting this commit in top of current git solves the problem.

It seems to be a memory corruption. If you give me a hint how
to further debug this I will do.