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authorAlexey Dobriyan <adobriyan@gmail.com>2018-04-06 02:20:37 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2018-04-06 07:36:23 +0300
commitf4957d5bd09165b165df851fbf8c658f7fcd9922 (patch)
tree021c72366564d4082e2885999640b79d174e5296 /mm/slab.c
parent361d575e5c7a39c73a8a9bdd504c1d1274f280aa (diff)
downloadlinux-f4957d5bd09165b165df851fbf8c658f7fcd9922.tar.xz
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 <adobriyan@gmail.com> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/slab.c')
-rw-r--r--mm/slab.c2
1 files changed, 1 insertions, 1 deletions
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;