linux-kernel - Re: libelf-0.175 breaks objtool

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Message-ID: <20190206021611.2nsqomt6a7wuaket@treble>
Date:   Tue, 5 Feb 2019 20:16:11 -0600
From:   Josh Poimboeuf <jpoimboe@...hat.com>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     LKML <linux-kernel@...r.kernel.org>
Subject: Re: libelf-0.175 breaks objtool

On Tue, Feb 05, 2019 at 01:38:21PM -0500, Steven Rostedt wrote:
> Just a FYI.
> 
> After a recent upgrade in debian testing, I was not able to build the
> kernel. I have a custom build of gcc, so I thought it was strange that
> I was getting something like this (took this from the web, as I don't
> have the error anymore with the work around, and currently doing a full
> build):
> 
> objdump: kernel/.tmp_signal.o: unable to initialize decompress status for section .debug_info                       
> objdump: kernel/.tmp_signal.o: unable to initialize decompress status for section .debug_info                       
> objdump: kernel/.tmp_signal.o: file format not recognized                                                           
>   CC      arch/x86/kernel/platform-quirks.o                                                                         
> objdump: arch/x86/kernel/.tmp_ebda.o: unable to initialize decompress status for section .debug_info                
> objdump: arch/x86/kernel/.tmp_ebda.o: unable to initialize decompress status for section .debug_info                
> objdump: arch/x86/kernel/.tmp_ebda.o: file format not recognized                                                    
> objdump: mm/.tmp_swap_slots.o: unable to initialize decompress status for section .debug_info                       
> objdump: mm/.tmp_swap_slots.o: unable to initialize decompress status for section .debug_info                       
> objdump: mm/.tmp_swap_slots.o: file format not recognized                                   

I installed debian testing on a VM, which has libelf 0.175-2, but I
can't recreate.  Can you share your config?

-- 
Josh