Commit a745b067 authored Oct 02, 2023 by Vlastimil Babka

KFENCE: cleanup kfence_guarded_alloc() after CONFIG_SLAB removal



Some struct slab fields are initialized differently for SLAB and SLUB so
we can simplify with SLUB being the only remaining allocator.

Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Marco Elver <elver@google.com>
Acked-by: David Rientjes <rientjes@google.com>
Tested-by: David Rientjes <rientjes@google.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>

parent 72786c0a

mm/kfence/core.c

+0 −4

Original line number	Diff line number	Diff line
		@@ -463,11 +463,7 @@ static void kfence_guarded_alloc(struct kmem_cache cache, size_t size, gfp_t g
		/* Set required slab fields. */
		slab = virt_to_slab((void *)meta->addr);
		slab->slab_cache = cache;
		#if defined(CONFIG_SLUB)
		slab->objects = 1;
		#elif defined(CONFIG_SLAB)
		slab->s_mem = addr;
		#endif

		/* Memory initialization. */
		set_canary(meta);