(waitsimple) begin
Got a call to exec something
bfffffa0  02 00 00 00 aa a6 04 08-b8 ff ff bf b2 80 04 08 |................|
bfffffb0  aa a6 04 08 00 00 00 00-c8 ff ff bf f4 80 04 08 |................|
bfffffc0  00 00 00 00 d5 ff ff bf-dd ff ff bf 24 87 04 08 |............$...|
bfffffd0  00 24 87 04 08 01 00 00-00 ed ff ff bf 00 00 00 |.$..............|
bfffffe0  00 00 00 00 00 01 00 00-00 ed ff ff bf f5 ff ff |................|
bffffff0  bf 00 00 00 00 77 61 69-74 73 69 6d 70 6c 65 00 |.....waitsimple.|
c0000000  53 ff 00 f0                                     |S...            |
stack pointer is 0xbfffffa4
exec-ing:'Page fault at 0xaa: not present error reading page in kernel context.
Interrupt 0x0e (#PF Page-Fault Exception) at eip=0xc010655a
 cr2=000000aa error=00000000
 eax=ffffffff ebx=000000aa ecx=ffffffff edx=000000aa
 esi=c010ea38 edi=c011af44 esp=c011aee4 ebp=c011ae74
 cs=0008 ds=0010 es=0010 ss=5de0
Kernel PANIC at ../../userprog/exception.c:100 in kill(): Kernel bug - unexpected interrupt in kernel
Call stack: 0xc011ad90Page fault at 0x64: not present error reading page in kernel context.
Interrupt 0x0e (#PF Page-Fault Exception) at eip=0xc01053bb
 cr2=00000064 error=00000000
 eax=00000064 ebx=00000064 ecx=c011acbc edx=000003d4
 esi=c010ce73 edi=c010e8a9 esp=c010e12f ebp=c011ad50
 cs=0008 ds=0010 es=0010 ss=ad90
Kernel PANIC recursion at ../../userprog/exception.c:100 in kill().
Timer: 401 ticks
Thread: 0 idle ticks, 203 kernel ticks, 198 user ticks
hd0:0: 0 reads, 0 writes
hd0:1: 59 reads, 198 writes
hd1:0: 95 reads, 0 writes
Console: 2210 characters output
Keyboard: 0 keys pressed
Exception: 2 page faults
Powering off...