linux-kernel - Re: [RFC] improve_stack: make stack dump output useful again

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Message-ID: <53223A4A.7070408@oracle.com>
Date:	Thu, 13 Mar 2014 19:07:54 -0400
From:	Sasha Levin <sasha.levin@...cle.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [RFC] improve_stack: make stack dump output useful again

On 03/13/2014 06:59 PM, Linus Torvalds wrote:
> On Thu, Mar 13, 2014 at 3:20 PM, Sasha Levin <sasha.levin@...cle.com> wrote:
>>
>> I'll fix it up and re-send this patch.
>
> The problem (as you will find out) is that "addr2line" doesn't take
> symbolic names.
>
> So either addr2line needs to be improved (which really would be a good
> idea regardless), or your script needs to use "nm" or "gdb" or
> something to first translate the symbol+off into a hex number (which
> will not match the kernel-provided hex number when base randomization
> is in effect, but it will match the pre-randomized data in the vmlinux
> file, so then addr2line would work).

I figured that I'll just read it from System.map (and do the math when
adding the offset). That should work, right?


Thanks,
Sasha

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