Current line

kd> l-t
Source options are e:
     2/l - List source line at prompt
     4/s - List source code at prompt
     8/o - Only show source code at prompt

====> when i type l-t, i got that notes. I dont' understand their meaning. Please help.

just type backtrace, and it should tell you where you are in each nested method

when i type "backtrace", i got syntax error.

Try:
kd> u
(Unassemble next few instructions)

I'm sorry you're using windbg I was thinking of unix dbg

kd>u doesn't work

kd> u
nt!KeUpdateSystemTime+0x142:
805120f8 ebb4             jmp     nt!KeUpdateSystemTime+0xf8 (805120ae)
nt!KeUpdateRunTime:
805120fa a11cf0dfff       mov     eax,[ffdff01c]
805120ff 53               push    ebx
80512100 ff80c4050000     inc     dword ptr [eax+0x5c4]
80512106 8b9824010000     mov     ebx,[eax+0x124]
8051210c 8b4b44           mov     ecx,[ebx+0x44]
8051210f f7457000000200   test    dword ptr [ebp+0x70],0x20000
80512116 753e             jnz     nt!KeUpdateRunTime+0x60 (80512156)
kd> bl
 0 eu             0001 (0001) (@@masm(`hello.c:22+`))
 1 eu             0001 (0001) (@@masm(`hello.c:22+`))
 2 eu             0001 (0001) (DriverEntry)
 3 eu             0001 (0001) (DriverEntry)
 4 eu             0001 (0001) (DriverEntry)
 5 e 805120ac     0001 (0001) nt!KeUpdateSystemTime+0xf6

kd> l+t
Source options are f:
     1/t - Step/trace by source line
     2/l - List source line at prompt
     4/s - List source code at prompt
     8/o - Only show source code at prompt
kd>
Source options are f:
     1/t - Step/trace by source line
     2/l - List source line at prompt
     4/s - List source code at prompt
     8/o - Only show source code at prompt