[PATCH] fs/pstore/ram.c: Fix the ramoops module parameters update

[PATCH] fs/pstore/ram.c: Fix the ramoops module parameters update

[Wang Long]

In the function ramoops_probe, the console_size, pmsg_size,
ftrace_size may be update because the value is not the power
of two. We should update the module parameter variables
as well so they are visible through /sys/module/ramoops/parameters
correctly.

Signed-off-by: Wang Long <long.wanglong@huawei.com>
---
 fs/pstore/ram.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c
index 5df325e..1aaa8dc 100644
--- a/fs/pstore/ram.c
+++ b/fs/pstore/ram.c
@@ -559,6 +559,9 @@ pr_info("[%s] pstore_register", __func__);
 	mem_address = pdata->mem_address;
 	record_size = pdata->record_size;
 	dump_oops = pdata->dump_oops;
+	ramoops_console_size = pdata->console_size;
+	ramoops_pmsg_size = pdata->pmsg_size;
+	ramoops_ftrace_size = pdata->ftrace_size;
 
 	pr_info("attached 0x%lx@0x%llx, ecc: %d/%d\n",
 		cxt->size, (unsigned long long)cxt->phys_addr,
-- 
1.8.3.4

Re: [PATCH] fs/pstore/ram.c: Fix the ramoops module parameters update

[long.wanglong]

On 2015/3/9 15:39, Wang Long wrote:
cc: marco.stornelli@gmail.com
cc: anton.vorontsov@linaro.org
cc: salyzyn@android.com
cc: sergiu@chromium.org

> In the function ramoops_probe, the console_size, pmsg_size,
> ftrace_size may be update because the value is not the power
> of two. We should update the module parameter variables
> as well so they are visible through /sys/module/ramoops/parameters
> correctly.
> 
> Signed-off-by: Wang Long <long.wanglong@huawei.com>
> ---
>  fs/pstore/ram.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c
> index 5df325e..1aaa8dc 100644
> --- a/fs/pstore/ram.c
> +++ b/fs/pstore/ram.c
> @@ -559,6 +559,9 @@ pr_info("[%s] pstore_register", __func__);
>  	mem_address = pdata->mem_address;
>  	record_size = pdata->record_size;
>  	dump_oops = pdata->dump_oops;
> +	ramoops_console_size = pdata->console_size;
> +	ramoops_pmsg_size = pdata->pmsg_size;
> +	ramoops_ftrace_size = pdata->ftrace_size;
>  
>  	pr_info("attached 0x%lx@0x%llx, ecc: %d/%d\n",
>  		cxt->size, (unsigned long long)cxt->phys_addr,
> 

Re: [PATCH] fs/pstore/ram.c: Fix the ramoops module parameters update

[Mark Salyzyn]

On 03/09/2015 04:17 AM, long.wanglong wrote:
> In the function ramoops_probe, the console_size, pmsg_size,
> ftrace_size may be update because the value is not the power
> of two. We should update the module parameter variables
> as well so they are visible through /sys/module/ramoops/parameters
> correctly.
>
> Signed-off-by: Wang Long <long.wanglong@huawei.com>
> ---
>   fs/pstore/ram.c | 3 +++
>   1 file changed, 3 insertions(+)
Ack

Re: [PATCH] fs/pstore/ram.c: Fix the ramoops module parameters update

[Kees Cook]

On Mon, Mar 9, 2015 at 12:39 AM, Wang Long <long.wanglong@huawei.com> wrote:
> In the function ramoops_probe, the console_size, pmsg_size,
> ftrace_size may be update because the value is not the power
> of two. We should update the module parameter variables
> as well so they are visible through /sys/module/ramoops/parameters
> correctly.
>
> Signed-off-by: Wang Long <long.wanglong@huawei.com>
> ---
>  fs/pstore/ram.c | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c
> index 5df325e..1aaa8dc 100644
> --- a/fs/pstore/ram.c
> +++ b/fs/pstore/ram.c
> @@ -559,6 +559,9 @@ pr_info("[%s] pstore_register", __func__);
>         mem_address = pdata->mem_address;
>         record_size = pdata->record_size;
>         dump_oops = pdata->dump_oops;
> +       ramoops_console_size = pdata->console_size;
> +       ramoops_pmsg_size = pdata->pmsg_size;
> +       ramoops_ftrace_size = pdata->ftrace_size;
>
>         pr_info("attached 0x%lx@0x%llx, ecc: %d/%d\n",
>                 cxt->size, (unsigned long long)cxt->phys_addr,

I swear this had been fixed before. Thanks for catching it!

Acked-by: Kees Cook <keescook@chromium.org>

-Kees

> --
> 1.8.3.4
>
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-- 
Kees Cook
Chrome OS Security

RE: [PATCH] fs/pstore/ram.c: Fix the ramoops module parameters update

[Luck, Tony]

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> I swear this had been fixed before. Thanks for catching it!

Maybe I missed it?

> Acked-by: Kees Cook <keescook@chromium.org>

Got it this time - should show up in the next linux-next build.

Thanks

-Tony
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