Currently my_svc_run does not handle poll time allowing idle TCP
connections to remain ESTABLISHED indefinitely. When the number
of connections reaches the limit the open file descriptors
(ulimit -n) then accept(2) fails with EMFILE. Since libtirpc does
not handle EMFILE returned from accept(2) this get my_svc_run into
a tight loop calling accept(2) resulting in the RPC service being
down, it's no longer able to service any requests.
Fix by add call to __svc_destroy_idle to my_svc_run to remove
inactive connections when poll(2) returns timeout.
Fixes: b2c9430f46c4 Use poll() instead of select() in svc_run()
Signed-off-by: dai.ngo@xxxxxxxxxx
---
src/rpcb_svc_com.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/src/rpcb_svc_com.c b/src/rpcb_svc_com.c
index 1743dadf5db7..cb33519010d3 100644
--- a/src/rpcb_svc_com.c
+++ b/src/rpcb_svc_com.c
@@ -1048,6 +1048,8 @@ netbuffree(struct netbuf *ap)
}
+extern void __svc_destroy_idle(int, bool_t);
+
void
my_svc_run()
{
@@ -1076,6 +1078,7 @@ my_svc_run()
* other outside event) and not caused by poll().
*/
case 0:
+ __svc_destroy_idle(30, FALSE);
continue;
default:
/*
--
2.26.2
