gprs_ns2: prevent division by zero in load_sharing
Check if the NSE is alive before passing UNITDATA to the load sharing.
Change-Id: I0e2a59bec9b72f74eb64510a2e1ad60486694a55
Fixes: OS#4996
diff --git a/src/gb/gprs_ns2.c b/src/gb/gprs_ns2.c
index 1cf2335..de27fb4 100644
--- a/src/gb/gprs_ns2.c
+++ b/src/gb/gprs_ns2.c
@@ -365,9 +365,13 @@
uint32_t load_selector)
{
struct gprs_ns2_vc *tmp;
- uint32_t mod = (bvci + load_selector) % nse->nsvc_count;
+ uint32_t mod;
uint32_t i = 0;
+ if (nse->nsvc_count == 0)
+ return NULL;
+
+ mod = (bvci + load_selector) % nse->nsvc_count;
llist_for_each_entry(tmp, &nse->nsvc, list) {
if (!ns2_vc_is_unblocked(tmp))
continue;
@@ -457,6 +461,9 @@
if (!nse)
return -EINVAL;
+ if (!nse->alive)
+ return 0;
+
nsvc = ns2_load_sharing(nse, bvci, nsp->u.unitdata.link_selector);
/* TODO: send a status primitive back */