Re: [GIT PULL] x86/kaslr for v3.14

[Richard Weinberger <richard@nod.at>]

Am 28.01.2014 18:35, schrieb Linus Torvalds:
> On Tue, Jan 28, 2014 at 9:24 AM, Richard Weinberger <richard@nod.at> wrote:
>>
>> Hmm, my gdb does not like that notion.
>>
>> (gdb) list schedule+0x45
>> Function "schedule+0x45" not defined.
> 
> I don't have a debug build, so maybe it's something specific to gdb
> actually seeing type information and then being confused..
> 
> Can you do "x/10i schedule+0x45" because that definitely works for me.
> But I literally detest DBUG_INFO builds, because it's useless crap.
> 99% of everything I debug is from people reporting problems on their
> kernels, so it's not like my local debug info would match that anyway.

x/10i schedule+0x45 works.

> Anyway, if it's a type information thing due to DEBUG_INFO that
> confuses gdb and makes it think that the "+0x45" part doesn't make
> sense, you may need to add a cast to get gdb to ignore the type
> information. IOW, does
> 
>   list (void *)schedule + 0x45
> 
> work for you?

Nope.

(gdb) list (void *)schedule + 0x45
Function "(void *)schedule + 0x45" not defined.

> I happen to have gdb-7.6.50 here that I tested with, but I've used
> "symbol+offset" forever afaik, so it's definitely not something new.

I'm on 7.5.1.

Thanks,
//richard