Re: [PATCH v2] livepatch: unpatch all klp_objects if klp_module_coming fails
From: Petr Mladek
Date: Tue Oct 10 2017 - 08:31:52 EST
On Mon 2017-10-02 11:56:48, Joe Lawrence wrote:
> When an incoming module is considered for livepatching by
> klp_module_coming(), it iterates over multiple patches and multiple
> kernel objects in this order:
>
> list_for_each_entry(patch, &klp_patches, list) {
> klp_for_each_object(patch, obj) {
>
> which means that if one of the kernel objects fails to patch,
> klp_module_coming()'s error path needs to unpatch and cleanup any kernel
> objects that were already patched by a previous patch.
>
> Reported-by: Miroslav Benes <mbenes@xxxxxxx>
> Suggested-by: Petr Mladek <pmladek@xxxxxxxx>
> Signed-off-by: Joe Lawrence <joe.lawrence@xxxxxxxxxx>
Looks good to me.
Reviewed-by: Petr Mladek <pmladek@xxxxxxxx>
Best Regards,
Petr