[PATCH 1/2] ntoskrnl.exe: Avoid loading a driver multiple times in ZwLoadDriver().
Zebediah Figura
z.figura12 at gmail.com
Fri Dec 21 17:28:46 CST 2018
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=45805
Signed-off-by: Zebediah Figura <z.figura12 at gmail.com>
---
dlls/ntoskrnl.exe/ntoskrnl.c | 7 +++++++
dlls/ntoskrnl.exe/tests/driver.c | 3 +++
2 files changed, 10 insertions(+)
diff --git a/dlls/ntoskrnl.exe/ntoskrnl.c b/dlls/ntoskrnl.exe/ntoskrnl.c
index 2b3b2ec0ef..d0112f4904 100644
--- a/dlls/ntoskrnl.exe/ntoskrnl.c
+++ b/dlls/ntoskrnl.exe/ntoskrnl.c
@@ -3520,6 +3520,13 @@ NTSTATUS WINAPI ZwLoadDriver( const UNICODE_STRING *service_name )
return STATUS_NO_MEMORY;
}
+ if (wine_rb_get( &wine_drivers, &drv_name ))
+ {
+ TRACE( "driver %s already loaded\n", debugstr_us(&drv_name) );
+ RtlFreeUnicodeString( &drv_name );
+ return STATUS_IMAGE_ALREADY_LOADED;
+ }
+
set_service_status( service_handle, SERVICE_START_PENDING, 0 );
status = IoCreateDriver( &drv_name, init_driver );
diff --git a/dlls/ntoskrnl.exe/tests/driver.c b/dlls/ntoskrnl.exe/tests/driver.c
index 17e54cd508..6ab5c3e054 100644
--- a/dlls/ntoskrnl.exe/tests/driver.c
+++ b/dlls/ntoskrnl.exe/tests/driver.c
@@ -206,6 +206,9 @@ static void test_load_driver(void)
ret = ZwLoadDriver(&name);
ok(!ret, "got %#x\n", ret);
+ ret = ZwLoadDriver(&name);
+ ok(ret == STATUS_IMAGE_ALREADY_LOADED, "got %#x\n", ret);
+
ret = ZwUnloadDriver(&name);
ok(!ret, "got %#x\n", ret);
}
--
2.14.1
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