linux-kernel - Re: [PATCH 1/1] platform/chrome: chromeos

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Date:   Thu, 2 Apr 2020 00:10:46 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Sarthak Kukreti <sarthakkukreti@...omium.org>
Cc:     bleung@...omium.org, enric.balletbo@...labora.com,
        anton@...msg.org, linux-kernel@...r.kernel.org, ccross@...roid.com,
        tony.luck@...el.com, gwendal@...omium.org
Subject: Re: [PATCH 1/1] platform/chrome: chromeos_pstore: set user space log
 size

On Wed, Apr 01, 2020 at 05:15:48PM -0700, Sarthak Kukreti wrote:
> On x86 ChromiumOS devices, the pmsg_size is set to 0 (check
> /sys/module/ramoops/parameters/pmsg_size): this prevents use of
> pstore-pmsg, even if CONFIG_PSTORE_PMSG is enabled. Set pmsg_size
> to a value that is consistent with the size used on non-x86 ChromiumOS
> devices.
> 
> Signed-off-by: Sarthak Kukreti <sarthakkukreti@...omium.org>

Reviewed-by: Kees Cook <keescook@...omium.org>

-Kees

> ---
>  drivers/platform/chrome/chromeos_pstore.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/platform/chrome/chromeos_pstore.c b/drivers/platform/chrome/chromeos_pstore.c
> index d13770785fb5..82dea8cb5da1 100644
> --- a/drivers/platform/chrome/chromeos_pstore.c
> +++ b/drivers/platform/chrome/chromeos_pstore.c
> @@ -57,6 +57,7 @@ static struct ramoops_platform_data chromeos_ramoops_data = {
>  	.record_size	= 0x40000,
>  	.console_size	= 0x20000,
>  	.ftrace_size	= 0x20000,
> +	.pmsg_size	= 0x20000,
>  	.dump_oops	= 1,
>  };
>  
> -- 
> 2.26.0.rc2.310.g2932bb562d-goog
> 

-- 
Kees Cook