Add a missing rcu_read_unlock() call on exit path

An exit path in the dns_dispatch_add() function fails to get out of
the RCU critical section when returning early. Add the missing
rcu_read_unlock() call.

(cherry picked from commit 4123d59fbc3fc5139b5e43370238ca13a290e07c)

diff --git a/lib/dns/dispatch.c b/lib/dns/dispatch.c
index 9cc27e5a752daec983fbc81596ab027d3c5d2828..01224322169a100b6c41195a269dc70d654dc0c5 100644 (file)
--- a/lib/dns/dispatch.c
+++ b/lib/dns/dispatch.c
@@ -1496,6 +1496,7 @@ dns_dispatch_add(dns_dispatch_t *disp, isc_loop_t *loop,
 fail:
        if (result != ISC_R_SUCCESS) {
                isc_mem_put(disp->mctx, resp, sizeof(*resp));
+               rcu_read_unlock();
                return (result);
        }