net: Fix memory leak in the proto_register function
If the slub allocator is used, kmem_cache_create() may merge two or more
kmem_cache's into one but the cache name pointer is not updated and
kmem_cache_name() is no longer guaranteed to return the pointer passed
to the former function. This patch stores the kmalloc'ed pointers in the
corresponding request_sock_ops and timewait_sock_ops structures.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Reviewed-by: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/request_sock.h b/include/net/request_sock.h
index cac811e..c719084 100644
--- a/include/net/request_sock.h
+++ b/include/net/request_sock.h
@@ -31,6 +31,7 @@
int family;
int obj_size;
struct kmem_cache *slab;
+ char *slab_name;
int (*rtx_syn_ack)(struct sock *sk,
struct request_sock *req);
void (*send_ack)(struct sock *sk, struct sk_buff *skb,
diff --git a/include/net/timewait_sock.h b/include/net/timewait_sock.h
index 1e1ee32..97c3b14 100644
--- a/include/net/timewait_sock.h
+++ b/include/net/timewait_sock.h
@@ -16,6 +16,7 @@
struct timewait_sock_ops {
struct kmem_cache *twsk_slab;
+ char *twsk_slab_name;
unsigned int twsk_obj_size;
int (*twsk_unique)(struct sock *sk,
struct sock *sktw, void *twp);
