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−u
Displays the stack trace of all user threads
For example:
(kdbx) trace
*** stack trace of thread 0xffffffff819af590 pid=0 ***
> 0 thread_run(new_thread = 0xffffffff819af928)
["../../../../src/kernel/kern/sched_prim.c":1637, 0xfffffc00002f9368]
1 idle_thread() ["../../../../src/kernel/kern/sched_prim.c":2717,
0xfffffc00002fa32c]
*** stack trace of thread 0xffffffff819af1f8 pid=0 ***
> 0 thread_block() ["../../../../src/kernel/kern/sched_prim.c":1455,
0xfffffc00002f9084]
1 softclock_main() ["../../../../src/kernel/bsd/kern_clock.c":810,
0xfffffc000023a6d4]
.
.
.
*** stack trace of thread 0xffffffff819fc398 pid=0 ***
> 0 thread_block() ["../../../../src/kernel/kern/sched_prim.c":1471,
0xfffffc00002f9118]
1 vm_pageout_loop() ["../../../../src/kernel/vm/vm_pagelru.c":375,
0xfffffc0000395664]
2 vm_pageout() ["../../../../src/kernel/vm/vm_pagelru.c":834,
0xfffffc00003961e0]
.
.
.
*** stack trace of thread 0xffffffff819fce60 pid=2 ***
> 0 thread_block() ["../../../../src/kernel/kern/sched_prim.c":1471,
0xfffffc00002f9118]
1 msg_dequeue(message_queue = 0xffffffff819a5970, max_size = 8192,
option = 0, tout = 0, kmsgptr = 0xffffffff916e3980)
["../../../../src/kernel/kern/ipc_basics.c":884, 0xfffffc00002e8b54]
2 msg_receive_trap(header = 0xfffffc00005bc150, option = 0, size =
8192, name = 0, tout = 0)
["../../../../src/kernel/kern/ipc_basics.c":1245, 0xfffffc00002e92a4]
3 msg_receive(header = 0xfffffc00005be150, option = 6186352, tout =
0) ["../../../../src/kernel/kern/ipc_basics.c":1107, 0xfffffc00002e904c]
4 ux_handler() ["../../../../src/kernel/builtin/ux_exception.c":221,
0xfffffc000027269c]
*** stack trace of thread 0xffffffff81a10730 pid=13 ***
> 0 thread_block() ["../../../../src/kernel/kern/sched_prim.c":1471,
0xfffffc00002f9118]
1 mpsleep(chan = 0xffffffff819f3270 =
"H4\237\201\377\377\377\377^X0\237\201\377\377\377\377^ ^YR", pri =
296, wmesg = 0xfffffc000042f5e0 =
"\200B\260\300B\244KA\340\3038F]\244\377, timo = 0,
lockp = (nil), flags = 0)
["../../../../src/kernel/bsd/kern_synch.c":341, 0xfffffc0000250250]
2 sigsuspend(p = 0xffffffff81a04278, args = 0xffffffff9170b8a8,
retval = 0xffffffff9170b898)
.
.
.
2.2.3.30 Displaying a u Structure
The u extension displays a u structure. This extension has the following
format:
Kernel Debugging Utilities 2–33