If command is RTM_DELACTION, a non-NULL pointer is passed to rtnl_talk().
Then flag NLM_F_ACK is not set on n->nlmsg_flags and netlink_ack() will
not be called. Command tc will wait for the reply for ever.
Fixes: 86bf43c7c2fd ("lib/libnetlink: update rtnl_talk to support malloc
buff at run time")
Signed-off-by: Chris Mi <[email protected]>
Reviewed-by: Jiri Pirko <[email protected]>
---
tc/m_action.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tc/m_action.c b/tc/m_action.c
index afb6cfad..986ef7d0 100644
--- a/tc/m_action.c
+++ b/tc/m_action.c
@@ -529,7 +529,7 @@ static int tc_action_gd(int cmd, unsigned int flags,
req.n.nlmsg_seq = rth.dump = ++rth.seq;
- if (rtnl_talk(&rth, &req.n, &ans) < 0) {
+ if (rtnl_talk(&rth, &req.n, cmd == RTM_DELACTION ? NULL : &ans) < 0) {
fprintf(stderr, "We have an error talking to the kernel\n");
return 1;
}
--
2.14.3
