Gustavo A. R. Silva bbccc11bc8
audit: Use struct_size() helper in alloc_chunk ...
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 audit_chunk {
...
struct node {
struct list_head list;
struct audit_tree *owner;
unsigned index; /* index; upper bit indicates 'will prune' */
} owners[];
};
Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes.
So, replace the following form:
offsetof(struct audit_chunk, owners) + count * sizeof(struct node);
with:
struct_size(chunk, owners, count)
This code was detected with the help of Coccinelle.
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org >
Signed-off-by: Paul Moore <paul@paul-moore.com >
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bbccc11bc8