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Guilty Commit:
0.4.15-dev-1788-g41475df https://github.com/reactos/reactos/commit/41475dfcd71275f2c704cc3e8cfbcb8bf35aa242

Reproduction steps

have an UDFS iso mounted in a secondary CDROM drive, I used MSVisualStudio2010Express cd for this test
boot the ros LiveCD
run an exe from the UDFS iso, see my video. (I guess it doesn't matter which exe we would run here.) But it is important to run an exe, the bug would not happen if you just browsed the UDFS-file-system, I double-checked that!
try to shutdown the ros LiveCD afterwards

Expected result
It should shutdown without any assertion being hit

Observed result
It asserts 2x during shutdown

*** Assertion failed: !Vcb->OverflowQueueCount

***   Source File: drivers/filesystems/udfs/shutdown.cpp, line 199

Break repeatedly, break Once, Ignore, terminate Process or terminate Thread (boipt)?

kdb:> bt

Execute '.cxr F83988DC' to dump context

[7h

Entered debugger on embedded INT3 at 0x0008:0x8058B515.

kdb:> bt

Eip:

<ntoskrnl.exe:18b516 (C:\ros\reactos\output-MinGW-i386/../sdk/lib/rtl/i386/debug_asm.S:33 (DbgBreakPoint))>

Frames:

<udfs.sys:3c055 (drivers/filesystems/udfs/shutdown.cpp:199 (UDFCommonShutdown))>

<udfs.sys:3c29b (drivers/filesystems/udfs/shutdown.cpp:72 (UDFShutdown))>

<ntoskrnl.exe:70287 (ntoskrnl/io/iomgr/irp.c:1286 (IofCallDriver))>

<ntoskrnl.exe:5821e (ntoskrnl/io/iomgr/device.c:175 (IoShutdownSystem))>

<ntoskrnl.exe:1178a7 (ntoskrnl/po/poshtdwn.c:277 (PopGracefulShutdown))>

<ntoskrnl.exe:3c14c (ntoskrnl/ex/work.c:158 (ExpWorkerThreadEntryPoint))>

<ntoskrnl.exe:12b730 (ntoskrnl/ps/thread.c:156 (PspSystemThreadStartup))>

<ntoskrnl.exe:149eb5 (ntoskrnl/ke/i386/thrdini.c:78 (KiThreadStartup))>

<ntoskrnl.exe:12b703 (ntoskrnl/ps/thread.c:63 (PspUserThreadStartup))>

The bug is reproducible for me.

relates to

CORE-19386 UDFS - Unable to access some files

CORE-18370 Boot CD on Xbox: Memory at 0xFFFFFFFF could not be accessed (then BSOD)