[Bug 56117] New: Celtic Kings runs out of memory in mere seconds when music is enabled

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=56117

Bug ID: 56117
           Summary: Celtic Kings runs out of memory in mere seconds when
                    music is enabled
           Product: Wine
           Version: 8.18
          Hardware: x86-64
               URL: https://archive.org/download/celtic-kings/Celtic%20Kin
                    gs.zip
                OS: Linux
            Status: NEW
          Keywords: download, regression
          Severity: normal
          Priority: P2
         Component: dmusic
          Assignee: [e-mail]
          Reporter: [e-mail]
                CC: [e-mail]
   Regression SHA1: 7a678903fbe9b384e97b23bc8cb73c9239616054
      Distribution: ArchLinux

Created attachment 75783
  --> https://bugs.winehq.org/attachment.cgi?id=75783
terminal output

Audio never worked in the game without native directmusic and this has not
changed with the more complete directmusic implementation in recent Wine.

The problem is that the game runs out of memory in about 15 seconds just while
idling in the main menu.

Some kind of memory leak first appeared in Wine-8.18 after
commit 7a678903fbe9b384e97b23bc8cb73c9239616054
dmime: Implement IDirectMusicPerformance_GetNotificationPMsg.

It was less severe and allowed me to play the tutorial for a couple minutes
then the game quit abruptly. For example I can see in htop that the memory
consumption of Celtic Kings.exe grows steadily whenever I issue a move command
for my character.

In Wine-8.19 the issue became more severe: the game runs out of memory in 10-15
seconds while idling in the main menu when music is enabled (no user
interaction is needed).
This is due to
commit d5e156fa7fc9ff47c1c99af342047319f0f23bfa
dmime: Rewrite message thread with a condition variable.

Can be reproduced with the demo version.

Tested with wine-9.0-rc3-6-g91a29134ff3.