mirror of https://gitee.com/openkylin/linux.git
2b90cb2233
One of the more common cases of allocation size calculations is finding
the size of a structure that has a zero-sized array at the end, along
with memory for some number of elements for that array. For example:
struct nd_region {
...
struct nd_mapping mapping[0];
};
instance = kzalloc(sizeof(struct nd_region) + sizeof(struct nd_mapping) *
count, GFP_KERNEL);
Instead of leaving these open-coded and prone to type mistakes, we can
now use the new struct_size() helper:
instance = kzalloc(struct_size(instance, mapping, count), GFP_KERNEL);
This code was detected with the help of Coccinelle.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20190610210613.GA21989@embeddedor
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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| .. | ||
| Kconfig | ||
| Makefile | ||
| badrange.c | ||
| blk.c | ||
| btt.c | ||
| btt.h | ||
| btt_devs.c | ||
| bus.c | ||
| claim.c | ||
| core.c | ||
| dax_devs.c | ||
| dimm.c | ||
| dimm_devs.c | ||
| e820.c | ||
| label.c | ||
| label.h | ||
| namespace_devs.c | ||
| nd-core.h | ||
| nd.h | ||
| nd_virtio.c | ||
| of_pmem.c | ||
| pfn.h | ||
| pfn_devs.c | ||
| pmem.c | ||
| pmem.h | ||
| region.c | ||
| region_devs.c | ||
| security.c | ||
| virtio_pmem.c | ||
| virtio_pmem.h | ||