0: kd> k
# Child-SP RetAddr Call Site
00 nt!KeBugCheckEx
01 fnt!KiBugCheckDispatch+0x69
02 nt!KiPageFault+0x474
03 kbdclass!memcpy+0x92
04 kbdclass!KeyboardClassServiceCallback+0x16d
05 HKKbdFltr+0x1511
06 0xffffe081`ed243190
07 0xfffff803`54f00398
08 0xffffe081`e91cd310
09 0xfffff803`54f00398
0a 0x8
0b 0xfffff803`54f002f0
0c 0xffffe081`ed243040
0d HKKbdFltr+0x13f0
0e 0xfffff803`4db35180
0f i8042prt!I8042KeyboardIsrDpc+0x1a8
10 nt!KiExecuteAllDpcs+0x42c
11 nt!KiRetireDpcList+0x1ba
12 nt!KiIdleLoop+0x9e