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[0.4.10][WIN32K:NTUSER] Acquire the user lock exclusively in NtUserGetSystemMenu CORE-15512

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It is rare, but I have seen this crash happening as well
when interacting with the taskbar quickly after the boot.

fix picked from 0.4.12-dev-203-g c526f94
This commit is contained in:
Joachim Henze 2020-12-03 02:10:42 +01:00
parent b481debf01
commit 6be79eaefa
1 changed files with 1 additions and 1 deletions
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2
win32ss/user/ntuser/menu.c
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@ -5454,7 +5454,7 @@ NtUserGetSystemMenu(HWND hWnd, BOOL bRevert)
DECLARE_RETURN(HMENU);
TRACE("Enter NtUserGetSystemMenu\n");
UserEnterShared();
UserEnterExclusive();
if (!(Window = UserGetWindowObject(hWnd)))
{