BSOD 0xBE (and/or 0x50 ?) when doing "GradientFill" test in Area due to DIB_32BPP_HLine

*** Fatal System Error: 0x000000be

                       (0xF670A000,0xDE406061,0xF6328218,0x0000000B)Driver at fault:

***    win32k.sys - Address F6A94EC8 base at F6971000, DateStamp 665af97e

.Entered debugger on embedded INT3 at 0x0008:0x805AAB64.kdb:> bt

Eip:

<ntoskrnl.exe:1aab64 (sdk/lib/rtl/i386/debug_asm.S:56 (RtlpBreakWithStatusInstruction))>

Frames:

<ntoskrnl.exe:9885d (ntoskrnl/ke/bug.c:1067 (KeBugCheckWithTf))>

<ntoskrnl.exe:98dc7 (ntoskrnl/ke/bug.c:1416 (KeBugCheckEx))>

<ntoskrnl.exe:c8e1d (ntoskrnl/mm/ARM3/pagfault.c:1853 (MmArmAccessFault))>

<ntoskrnl.exe:103ba8 (ntoskrnl/mm/mmfault.c:279 (MmAccessFault))>

<ntoskrnl.exe:1674cc (ntoskrnl/ke/i386/traphdlr.c:1369 (KiTrap0EHandler))>

<ntoskrnl.exe:36ae (:0 (KiTrap0E))>

<win32k.sys:123ec3 (win32ss/gdi/dib/i386/dib32bpp_hline.s:33 (DIB_32BPP_HLine))>

<win32k.sys:10483 (win32ss/gdi/eng/gradient.c:531 (EngGradientFill))>

<win32k.sys:105d0 (win32ss/gdi/eng/gradient.c:587 (IntEngGradientFill))>

<win32k.sys:c0d83 (win32ss/gdi/ntgdi/fillshap.c:1040 (GreGradientFill))>

<win32k.sys:c1090 (win32ss/gdi/ntgdi/fillshap.c:1125 (NtGdiGradientFill))>

<ntoskrnl.exe:3fe5 (:0 (KiSystemCallTrampoline))>

<ntoskrnl.exe:168369 (ntoskrnl/ke/i386/traphdlr.c:1840 (KiSystemServiceHandler))>

<ntoskrnl.exe:3e2f (:0 (KiFastCallEntry))>

<ntdll.dll:f8ad>

<Area.exe:5c06>

Couldn't access memory at 0x0000009A!