linux-kernel - Re: [PATCH] x86/KASLR: always return a value from process_mem

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Date:   Mon, 4 Mar 2019 09:20:58 +0800
From:   Chao Fan <fanc.fnst@...fujitsu.com>
To:     Louis Taylor <louis@...gniz.eu>
CC:     <tglx@...utronix.de>, <mingo@...hat.com>, <bp@...en8.de>,
        <hpa@...or.com>, <x86@...nel.org>, <bhe@...hat.com>,
        <kirill.shutemov@...ux.intel.com>, <linux-kernel@...r.kernel.org>,
        <clang-built-linux@...glegroups.com>, <ndesaulniers@...gle.com>,
        <jflat@...omium.org>
Subject: Re: [PATCH] x86/KASLR: always return a value from process_mem_region

On Sat, Mar 02, 2019 at 06:49:29PM +0000, Louis Taylor wrote:
>When compiling with -Wreturn-type, clang warns:
>
>arch/x86/boot/compressed/kaslr.c:704:1: warning: control may reach end of
>      non-void function [-Wreturn-type]
>
>This function's return statement should probably have been placed
>outside the #endif, so move it there
>
>Link: https://github.com/ClangBuiltLinux/linux/issues/360
>Signed-off-by: Louis Taylor <louis@...gniz.eu>
>---
> arch/x86/boot/compressed/kaslr.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
>diff --git a/arch/x86/boot/compressed/kaslr.c b/arch/x86/boot/compressed/kaslr.c
>index fa0332dda9f2..2e53c056ba20 100644
>--- a/arch/x86/boot/compressed/kaslr.c
>+++ b/arch/x86/boot/compressed/kaslr.c
>@@ -697,8 +697,8 @@ static bool process_mem_region(struct mem_vector *region,
> 			return 1;
> 		}
> 	}
>-	return 0;
> #endif
>+	return 0;

Make sense, thanks for your PATCH.

Thanks,
Chao Fan

> }
> 
> #ifdef CONFIG_EFI
>-- 
>2.20.1
>
>
>