From 3d340d4f31aa1cb3ad6cd9e7a59118e84ab040f1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Aida=20Jonikien=C4=97?= <aidas957@gmail.com>
Date: Fri, 8 Mar 2024 17:52:24 -0600
Subject: [PATCH] ntdll: Trigger write watches on the "info" pointer in
 SystemInterruptInformation.

---
 dlls/ntdll/unix/system.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/ntdll/unix/system.c b/dlls/ntdll/unix/system.c
index 4c6c4cd23e2..9dc1ff80152 100644
--- a/dlls/ntdll/unix/system.c
+++ b/dlls/ntdll/unix/system.c
@@ -2943,7 +2943,7 @@ NTSTATUS WINAPI NtQuerySystemInformation( SYSTEM_INFORMATION_CLASS class,
         len = peb->NumberOfProcessors * sizeof(SYSTEM_INTERRUPT_INFORMATION);
         if (size >= len)
         {
-            if (!info) ret = STATUS_ACCESS_VIOLATION;
+            if (!info || !virtual_check_buffer_for_write( info, len )) ret = STATUS_ACCESS_VIOLATION;
             else
             {
 #ifdef HAVE_GETRANDOM
-- 
2.43.0