netfilter: xtables: slightly better error reporting
When extended status codes are available, such as ENOMEM on failed
allocations, or subsequent functions (e.g. nf_ct_get_l3proto), passing
them up to userspace seems like a good idea compared to just always
EINVAL.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
diff --git a/net/netfilter/xt_string.c b/net/netfilter/xt_string.c
index e1f22a7..b0f8292 100644
--- a/net/netfilter/xt_string.c
+++ b/net/netfilter/xt_string.c
@@ -63,7 +63,7 @@
ts_conf = textsearch_prepare(conf->algo, conf->pattern, conf->patlen,
GFP_KERNEL, flags);
if (IS_ERR(ts_conf))
- return -EINVAL;
+ return PTR_ERR(ts_conf);
conf->config = ts_conf;
return 0;
