linux-kernel - Re: [PATCH] arm64/efi: efi

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Message-ID: <20160902102618.GC17482@arm.com>
Date:   Fri, 2 Sep 2016 11:26:18 +0100
From:   Will Deacon <will.deacon@....com>
To:     Xie Yisheng <xieyisheng1@...wei.com>
Cc:     mingo@...nel.org, guohanjun@...wei.com, mark.rutland@....com,
        catalin.marinas@....com, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, matt@...eblueprint.co.uk,
        linux-efi@...r.kernel.org, ard.biesheuvel@...aro.org
Subject: Re: [PATCH] arm64/efi: efi_init error handling fix

On Fri, Sep 02, 2016 at 06:18:39PM +0800, Xie Yisheng wrote:
> From: Yisheng Xie <xieyisheng1@...wei.com>
> 
> There's an early memmap leak in efi_init error path, fix it.
> 
> Signed-off-by: Yisheng Xie <xieyisheng1@...wei.com>
> ---
>  drivers/firmware/efi/arm-init.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)

Adding linux-efi, Ard and Matt. Please try to CC the relevant people in
future.

Will

> diff --git a/drivers/firmware/efi/arm-init.c b/drivers/firmware/efi/arm-init.c
> index c49d50e..5080e40 100644
> --- a/drivers/firmware/efi/arm-init.c
> +++ b/drivers/firmware/efi/arm-init.c
> @@ -243,8 +243,10 @@ void __init efi_init(void)
>  	     "Unexpected EFI_MEMORY_DESCRIPTOR version %ld",
>  	      efi.memmap.desc_version);
>  
> -	if (uefi_init() < 0)
> +	if (uefi_init() < 0) {
> +		early_memunmap(efi.memmap.map, params.mmap_size);
>  		return;
> +	}
>  
>  	reserve_regions();
>  	efi_memattr_init();
> -- 
> 1.7.12.4
>