[Bug 51614] New: NtGdiSetLayout is missing call to release_dc_ptr(dc)
WineHQ Bugzilla
wine-bugs at winehq.org
Mon Aug 16 00:54:02 CDT 2021
https://bugs.winehq.org/show_bug.cgi?id=51614
Bug ID: 51614
Summary: NtGdiSetLayout is missing call to release_dc_ptr(dc)
Product: Wine
Version: 6.15
Hardware: x86-64
OS: Linux
Status: UNCONFIRMED
Severity: major
Priority: P2
Component: gdi32
Assignee: wine-bugs at winehq.org
Reporter: jinoh.kang.kr at gmail.com
CC: huw at codeweavers.com, jacek at codeweavers.com,
julliard at winehq.org
Regression SHA1: 22df510eff3ee66bf02230b46eefef64a5bd8f74
Distribution: ---
Created attachment 70467
--> https://bugs.winehq.org/attachment.cgi?id=70467
Patch to add back release_dc_ptr(dc) to appropriate place
The commit 22df510eff3ee66bf02230b46eefef64a5bd8f74 (gdi32: Use ntgdi interface
for SetLayout implementation.) deletes a call to release_dc_ptr(dc) following
get_dc_ptr(hdc) in NtGdiSetLayout(HDC,LONG,DWORD).
The thread calling NtGdiSetLayout therefore holds the DC lock indefinitely,
preventing other threads from accessing the device context.
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