Re: [PATCH 0001/0001] format idle IP output func+offset/length

[Sergey Senozhatsky]

On (11/06/17 13:25), Liu, Changcheng wrote:
> kaslr feature is enabled in kernel.
> Remove kernel text address when dumping idle IP info
> 
> Signed-off-by: Liu Changcheng <changcheng....@intel.com>
> Signed-off-by: Jerry Liu <primerl...@gmail.com>
> 
> diff --git a/lib/nmi_backtrace.c b/lib/nmi_backtrace.c
> index 0bc0a35..9cc4178 100644
> --- a/lib/nmi_backtrace.c
> +++ b/lib/nmi_backtrace.c
> @@ -92,7 +92,7 @@ bool nmi_cpu_backtrace(struct pt_regs *regs)
>       if (cpumask_test_cpu(cpu, to_cpumask(backtrace_mask))) {
>               arch_spin_lock(&lock);
>               if (regs && cpu_in_idle(instruction_pointer(regs))) {
> -                     pr_warn("NMI backtrace for cpu %d skipped: idling at pc 
> %#lx\n",
> +                     pr_warn("NMI backtrace for cpu %d skipped: idling at pc 
> %pS\n",
                       I guess the word 'pc' can be dropped from the message ^^

there seems to be other cases in the kernel when we print regs->pc/regs->ip.

        -ss

>                               cpu, instruction_pointer(regs));
>               } else {
>                       pr_warn("NMI backtrace for cpu %d\n", cpu);