Hi Mike,

On Tue, Mar 5, 2013 at 3:49 AM, Mika Westerberg <mika.westerberg@iki.fi> wrote:

On Mon, Mar 04, 2013 at 10:20:42AM +0800, Lei Wen wrote:
> I met "dis" command not correct issue when use the crash, any idea?
> For built-in "dis" command in crash:
> crash> dis task_rq_lock
> 0xc015a2d8 <task_rq_lock>: rscsgt r0, sp, r3, lsl #14
> 0xc015a2dc <task_rq_lock+4>: mrcgt 8, 7, r0, cr2, cr13, {5}
> 0xc015a2e0 <task_rq_lock+8>: mcrvc 8, 4, r3, cr13, cr3, {6}
> 0xc015a2e4 <task_rq_lock+12>: lslsvc r3, r10, r8
> 0xc015a2e8 <task_rq_lock+16>: bl 0xc049fe34
> <__ip_route_output_key+220>

Looks weird.

What is the kernel version? Does the 'dis' command work for other functions?

Seems other functions is not working either...

Is the page table being corrupted? But I still could parse out the dump image and check the kernel dmesg for it, which is also weird.

crash> dis sched_rt_handler

0xc0160ed8 <sched_rt_handler>: cdppl 13, 5, cr2, cr6, cr13, {4}

0xc0160edc <sched_rt_handler+4>: stcle 9, cr7, [r7], #132 ; 0x84

0xc0160ee0 <sched_rt_handler+8>: ; <UNDEFINED> instruction: 0x167256bb

(gdb) disas sched_rt_handler

Dump of assembler code for function sched_rt_handler:

0xc0160ed8 <+0>: push {r4, r5, r6, r7, r8, r9, r10, r11, lr}

0xc0160edc <+4>: add r11, sp, #32

0xc0160ee0 <+8>: ldr r4, [pc, #384] ; 0xc0161068 <sched_rt_handler+400>

Thanks,

Lei