linux-kernel - Re: [PATCH 6/6] objtool: Fix STACK_FRAME_NON

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Message-ID: <20220506160528.kexxny6kcpf3gnie@treble>
Date:   Fri, 6 May 2022 09:05:28 -0700
From:   Josh Poimboeuf <jpoimboe@...nel.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org, jpoimboe@...hat.com,
        brgerst@...il.com, jiangshanlai@...il.com,
        Andrew.Cooper3@...rix.com, mark.rutland@....com
Subject: Re: [PATCH 6/6] objtool: Fix STACK_FRAME_NON_STANDARD reloc type

On Fri, May 06, 2022 at 02:14:37PM +0200, Peter Zijlstra wrote:
> STACK_FRAME_NON_STANDARD results in inconsistent relocation types
> depending on .c or .S usage:
> 
>   Relocation section '.rela.discard.func_stack_frame_non_standard' at offset 0x3c01090 contains 5 entries:
>   Offset             Info             Type               Symbol's Value  Symbol's Name + Addend
>   0000000000000000  00020c2200000002 R_X86_64_PC32          0000000000047b40 do_suspend_lowlevel + 0
>   0000000000000008  0002461e00000001 R_X86_64_64            00000000000480a0 machine_real_restart + 0
>   0000000000000010  0000001400000001 R_X86_64_64            0000000000000000 .rodata + b3d4
>   0000000000000018  0002444600000002 R_X86_64_PC32          00000000000678a0 __efi64_thunk + 0
>   0000000000000020  0002659d00000001 R_X86_64_64            0000000000113160 __crash_kexec + 0
> 
> Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>

Acked-by: Josh Poimboeuf <jpoimboe@...nel.org>

-- 
Josh