2ad98ab8f6
malloc_cache_aligned() might return zero, so fix potential NULL pointer access if __GFP_ZERO flag is set. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Ralph Siemsen <ralph.siemsen@linaro.org>
43 lines
729 B
C
43 lines
729 B
C
|
|
#include <common.h>
|
|
#include <memalign.h>
|
|
#include <linux/compat.h>
|
|
|
|
struct p_current cur = {
|
|
.pid = 1,
|
|
};
|
|
__maybe_unused struct p_current *current = &cur;
|
|
|
|
unsigned long copy_from_user(void *dest, const void *src,
|
|
unsigned long count)
|
|
{
|
|
memcpy((void *)dest, (void *)src, count);
|
|
return 0;
|
|
}
|
|
|
|
void *kmalloc(size_t size, int flags)
|
|
{
|
|
void *p;
|
|
|
|
p = malloc_cache_aligned(size);
|
|
if (p && flags & __GFP_ZERO)
|
|
memset(p, 0, size);
|
|
|
|
return p;
|
|
}
|
|
|
|
struct kmem_cache *get_mem(int element_sz)
|
|
{
|
|
struct kmem_cache *ret;
|
|
|
|
ret = memalign(ARCH_DMA_MINALIGN, sizeof(struct kmem_cache));
|
|
ret->sz = element_sz;
|
|
|
|
return ret;
|
|
}
|
|
|
|
void *kmem_cache_alloc(struct kmem_cache *obj, int flag)
|
|
{
|
|
return malloc_cache_aligned(obj->sz);
|
|
}
|