sock.c: potential null dereference

We test that "prot->rsk_prot" is non-null right before we dereference it
on this line.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/core/sock.c b/net/core/sock.c
index 61a65a2e04556eb19955e575c0d30a29d23d6de5..c5812bbc2cc91128d9797154d43f1cbc104ab979 100644 (file)
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -2288,7 +2288,8 @@ out_free_request_sock_slab:
                prot->rsk_prot->slab = NULL;
        }
 out_free_request_sock_slab_name:
-       kfree(prot->rsk_prot->slab_name);
+       if (prot->rsk_prot)
+               kfree(prot->rsk_prot->slab_name);
 out_free_sock_slab:
        kmem_cache_destroy(prot->slab);
        prot->slab = NULL;