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Commit fe1ff49d authored by Benjamin Herrenschmidt's avatar Benjamin Herrenschmidt Committed by Linus Torvalds
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mm: kmem_cache_create(): make it easier to catch NULL cache names 



Right now, if you inadvertently pass NULL to kmem_cache_create() at boot
time, it crashes much later after boot somewhere deep inside sysfs which
makes it very non obvious to figure out what's going on.

Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 398499d5

mm/slub.c

+3 −0
Original line number Diff line number Diff line
@@ -3345,6 +3345,9 @@ struct kmem_cache *kmem_cache_create(const char *name, size_t size, 
{

	struct kmem_cache *s;



	if (WARN_ON(!name))

		return NULL;



	down_write(&slub_lock);

	s = find_mergeable(size, align, flags, name, ctor);

	if (s) {