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[NTOS:MM] Fix PTE protection for executable CoW pages

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Fixes Blender x64.
See https://jira.reactos.org/browse/CORE-19761
This commit is contained in:
Timo Kreuzer 2024-09-23 21:26:37 +03:00
parent 52265ae007
commit c0590f5de0
1 changed files with 6 additions and 1 deletions
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7
ntoskrnl/mm/section.c
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@ -1509,7 +1509,12 @@ MmAlterViewAttributes(PMMSUPPORT AddressSpace,
*/
Page = MmGetPfnForProcess(Process, Address);
Protect = PAGE_READONLY;
/* Choose protection based on what was requested */
if (NewProtect == PAGE_EXECUTE_READWRITE)
Protect = PAGE_EXECUTE_READ;
else
Protect = PAGE_READONLY;
if (IS_SWAP_FROM_SSE(Entry) || PFN_FROM_SSE(Entry) != Page)
{
Protect = NewProtect;