From f4957d5bd09165b165df851fbf8c658f7fcd9922 Mon Sep 17 00:00:00 2001 From: Alexey Dobriyan Date: Thu, 5 Apr 2018 16:20:37 -0700 Subject: slab: make kmem_cache_create() work with 32-bit sizes struct kmem_cache::size and ::align were always 32-bit. Out of curiosity I created 4GB kmem_cache, it oopsed with division by 0. kmem_cache_create(1UL<<32+1) created 1-byte cache as expected. size_t doesn't work and never did. Link: http://lkml.kernel.org/r/20180305200730.15812-6-adobriyan@gmail.com Signed-off-by: Alexey Dobriyan Cc: Christoph Lameter Cc: Pekka Enberg Cc: David Rientjes Cc: Joonsoo Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/slab.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'mm/slab.c') diff --git a/mm/slab.c b/mm/slab.c index 9095c3945425..ba25d8363eb2 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -1877,7 +1877,7 @@ slab_flags_t kmem_cache_flags(unsigned long object_size, } struct kmem_cache * -__kmem_cache_alias(const char *name, size_t size, size_t align, +__kmem_cache_alias(const char *name, unsigned int size, unsigned int align, slab_flags_t flags, void (*ctor)(void *)) { struct kmem_cache *cachep; -- cgit v1.2.3-59-g8ed1b