On Mon, Sep 19, 2016 at 11:56 AM, Linus Torvalds
<torva...@linux-foundation.org> wrote:
>> The only working (and fast) approach I could come up with was an ugly
>> hack.  It assumes that start_kernel() is in init/main.c.
> That sounds entirely reasonable. Maybe somebody can come up with a
> better and more general approach, but that sounds like a fine starting
> point, and any incremental improvents can happen in the tree. So I'll
> apply your patch (assuming it passes my basic testing, which I expect
> it will).

Hmm. Would you mind if I change the

        addr2line -fpie $objfile $hexaddr | sed "s;$dir_prefix;;"


        addr2line -fpie $objfile $hexaddr |
                sed "s; at $dir_prefix\(\./\)*; at ;"

instead? There's two changes there: matching the " at " part (to just
make the match stricter) but also matching any following "./" thing
(which shows up for our include tree files, at least for me).

With that, all the cases I threw at it looked pretty good.

But the stricter matching might not matter, of course, and maybe there
is some addr2line version that doesn't do that? So I'm checking here..


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