linux-kernel - Re: [PATCH v2] scripts: add script for translating stack dump function offsets

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Date:   Sat, 17 Sep 2016 13:48:33 -0500
From:   Josh Poimboeuf <jpoimboe@...hat.com>
To:     Rabin Vincent <rabin@....in>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Stephane Eranian <eranian@...gle.com>,
        Vince Weaver <vincent.weaver@...ne.edu>,
        LKML <linux-kernel@...r.kernel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Ingo Molnar <mingo@...nel.org>,
        Kees Cook <keescook@...omium.org>
Subject: Re: [PATCH v2] scripts: add script for translating stack dump
 function offsets

On Sat, Sep 17, 2016 at 10:15:45AM +0200, Rabin Vincent wrote:
> On Fri, Sep 16, 2016 at 04:26:56PM -0500, Josh Poimboeuf wrote:
> > +	addr2line -ie $objfile $hexaddr
> 
> Could you pass in -f and -p too to addr2line?
> 
> Before:
> 
>  $ scripts/faddr2line ~/dev/kvm2/vmlinux free_reserved_area+0x90
>  /home/rabin/dev/linux/include/linux/compiler.h:222
>  /home/rabin/dev/linux/include/linux/page-flags.h:149
>  /home/rabin/dev/linux/include/linux/page-flags.h:154
>  /home/rabin/dev/linux/include/linux/page-flags.h:287
>  /home/rabin/dev/linux/include/linux/mm.h:1778
>  /home/rabin/dev/linux/include/linux/mm.h:1785
>  /home/rabin/dev/linux/mm/page_alloc.c:6599
> 
> After:
> 
>  $ scripts/faddr2line ~/dev/kvm2/vmlinux free_reserved_area+0x90
>  __read_once_size at /home/rabin/dev/linux/include/linux/compiler.h:222
>   (inlined by) PageTail at /home/rabin/dev/linux/include/linux/page-flags.h:149
>   (inlined by) PageCompound at /home/rabin/dev/linux/include/linux/page-flags.h:154
>   (inlined by) ClearPageReserved at /home/rabin/dev/linux/include/linux/page-flags.h:287
>   (inlined by) __free_reserved_page at /home/rabin/dev/linux/include/linux/mm.h:1778
>   (inlined by) free_reserved_page at /home/rabin/dev/linux/include/linux/mm.h:1785
>   (inlined by) free_reserved_area at /home/rabin/dev/linux/mm/page_alloc.c:6599

Yeah, I think that's much better.

-- 
Josh