[PATCH 4/7] wineoss: Limit Wow64 buffer allocations to 32-bit addresses.
Huw Davies
huw at codeweavers.com
Wed May 4 01:54:25 CDT 2022
Signed-off-by: Huw Davies <huw at codeweavers.com>
---
dlls/wineoss.drv/oss.c | 21 +++++++++++++++------
1 file changed, 15 insertions(+), 6 deletions(-)
diff --git a/dlls/wineoss.drv/oss.c b/dlls/wineoss.drv/oss.c
index 986ed274445..40b8879ef47 100644
--- a/dlls/wineoss.drv/oss.c
+++ b/dlls/wineoss.drv/oss.c
@@ -535,6 +535,15 @@ static HRESULT setup_oss_device(AUDCLNT_SHAREMODE share, int fd,
return ret;
}
+static ULONG_PTR zero_bits(void)
+{
+#ifdef _WIN64
+ return !NtCurrentTeb()->WowTebOffset ? 0 : 0x7fffffff;
+#else
+ return 0;
+#endif
+}
+
static NTSTATUS create_stream(void *args)
{
struct create_stream_params *params = args;
@@ -597,8 +606,8 @@ static NTSTATUS create_stream(void *args)
if(params->share == AUDCLNT_SHAREMODE_EXCLUSIVE)
stream->bufsize_frames -= stream->bufsize_frames % stream->period_frames;
size = stream->bufsize_frames * params->fmt->nBlockAlign;
- if(NtAllocateVirtualMemory(GetCurrentProcess(), (void **)&stream->local_buffer, 0, &size,
- MEM_COMMIT, PAGE_READWRITE)){
+ if(NtAllocateVirtualMemory(GetCurrentProcess(), (void **)&stream->local_buffer, zero_bits(),
+ &size, MEM_COMMIT, PAGE_READWRITE)){
params->result = E_OUTOFMEMORY;
goto exit;
}
@@ -931,8 +940,8 @@ static NTSTATUS get_render_buffer(void *args)
stream->tmp_buffer = NULL;
}
size = frames * stream->fmt->nBlockAlign;
- if(NtAllocateVirtualMemory(GetCurrentProcess(), (void **)&stream->tmp_buffer, 0, &size,
- MEM_COMMIT, PAGE_READWRITE)){
+ if(NtAllocateVirtualMemory(GetCurrentProcess(), (void **)&stream->tmp_buffer, zero_bits(),
+ &size, MEM_COMMIT, PAGE_READWRITE)){
stream->tmp_buffer_frames = 0;
return oss_unlock_result(stream, ¶ms->result, E_OUTOFMEMORY);
}
@@ -1041,8 +1050,8 @@ static NTSTATUS get_capture_buffer(void *args)
stream->tmp_buffer = NULL;
}
size = *frames * stream->fmt->nBlockAlign;
- if(NtAllocateVirtualMemory(GetCurrentProcess(), (void **)&stream->tmp_buffer, 0, &size,
- MEM_COMMIT, PAGE_READWRITE)){
+ if(NtAllocateVirtualMemory(GetCurrentProcess(), (void **)&stream->tmp_buffer, zero_bits(),
+ &size, MEM_COMMIT, PAGE_READWRITE)){
stream->tmp_buffer_frames = 0;
return oss_unlock_result(stream, ¶ms->result, E_OUTOFMEMORY);
}
--
2.25.1
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