[RFC PATCH] kernel/kallsyms.c: only show legal kernel symbol

[Rusty Russell]

Ming Lei <tom.leiming at gmail.com> writes:
> On Fri, Oct 25, 2013 at 7:08 AM, Rusty Russell <rusty at rustcorp.com.au> wrote:
>>
>> Sorry, I was imprecise.  I was referring to the kernel's kallsyms
>> tables produced by scripts/kallsyms.c.  This patch left them in the
>> the kallsyms tables and filtered them out from /proc/kallsyms.
>
> Yes, but it isn't easy to do it by script/kallsyms.c , and IMO, it should
> be correct to hide them for user space but keep them in kallsyms table.

So they'll appear in backtraces?  And turn up randomly for other symbol
dereferences?

I don't think you really want this!

>> It's weird that cpu_v7_suspend_size appeared above, since kallsyms
>> should filter out 'A' symbols already.
>
> Sorry, the 'A' symbol is a mistake, but the others do exist in /proc/kallsyms.

Ah, OK.

Cheers,
Rusty.