bpf: sockmap remove dead check

Remove dead code that bails on `attr->value_size > KMALLOC_MAX_SIZE` - the
previous check already bails on `attr->value_size != 4`.

Signed-off-by: Jann Horn <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>

diff --git a/kernel/bpf/sockmap.c b/kernel/bpf/sockmap.c
index 8dd9210d7db7851da0eb79b950803fedff9d89f3..a3b21385e9476298eb0b33df7dceb242a7d1e104 100644 (file)
--- a/kernel/bpf/sockmap.c
+++ b/kernel/bpf/sockmap.c
@@ -1442,9 +1442,6 @@ static struct bpf_map *sock_map_alloc(union bpf_attr *attr)
            attr->value_size != 4 || attr->map_flags & ~SOCK_CREATE_FLAG_MASK)
                return ERR_PTR(-EINVAL);
 
            attr->value_size != 4 || attr->map_flags & ~SOCK_CREATE_FLAG_MASK)
                return ERR_PTR(-EINVAL);
 

-       if (attr->value_size > KMALLOC_MAX_SIZE)
-               return ERR_PTR(-E2BIG);
-

        err = bpf_tcp_ulp_register();
        if (err && err != -EEXIST)
                return ERR_PTR(err);
        err = bpf_tcp_ulp_register();
        if (err && err != -EEXIST)
                return ERR_PTR(err);