Assertion 'OldValue.Locked' failed at ntoskrnl\include\/internal/ex.h line 1187 Entered debugger on embedded INT3 at 0x0008:0x808fe086. db:> bt Eip: Frames: --- Press q to abort, any other key to continue --- kdb:> j:\reactos>raddr2line ntoskrnl.exe fe087 Scanning j:\reactos\output-i386 ... Creating cache ...... done lib\rtl\i386\rtlmem.s:134 (RtlFillMemory) j:\reactos>raddr2line fastfat.sys 5959 drivers/filesystems/fastfat/fat.c:47 (FAT32GetNextCluster)