Re: [PATCH] mm: kmemleak: Remove security and coding style warning

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On Fri, Nov 10, 2023 at 11:11:02AM -0800, Omkar Wagle wrote:
> @@ -368,6 +367,7 @@ static void print_unreferenced(struct seq_file *seq,
>  
>  	for (i = 0; i < nr_entries; i++) {
>  		void *ptr = (void *)entries[i];
> +
>  		warn_or_seq_printf(seq, "    [<%pK>] %pS\n", ptr, ptr);
>  	}
>  }
> @@ -406,10 +406,11 @@ static struct kmemleak_object *__lookup_object(unsigned long ptr, int alias,
>  	unsigned long untagged_ptr = (unsigned long)kasan_reset_tag((void *)ptr);
>  
>  	while (rb) {
> -		struct kmemleak_object *object;
> +		struct kmemleak_object *object = NULL;

Seriously, what's this initialisation for?

>  		unsigned long untagged_objp;
>  
>  		object = rb_entry(rb, struct kmemleak_object, rb_node);

The variable gets assigned here.

> +
>  		untagged_objp = (unsigned long)kasan_reset_tag((void *)object->pointer);

I'm also not a fan of random whitespace updates throughout this file. It
makes backporting fixes harder later on.

-- 
Catalin




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