From: Kuba Kozak <kubax.kozak@intel.com>
Date: Fri, 22 Sep 2017 12:17:40 +0000 (+0200)
Subject: vhost: check poll error code
X-Git-Tag: spdx-start~1634
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=66a62101240bb714a6d2d5acd39010675251ffec;p=dpdk.git

vhost: check poll error code

Add return value check for poll() call.

Coverity issue: 140740
Fixes: 59317cef249c ("vhost: allow many vhost-user ports")
Cc: stable@dpdk.org

Signed-off-by: Kuba Kozak <kubax.kozak@intel.com>
Acked-by: Yuanhan Liu <yliu@fridaylinux.org>
---

diff --git a/lib/librte_vhost/fd_man.c b/lib/librte_vhost/fd_man.c
index 2ceacc9abd..4c6fed4189 100644
--- a/lib/librte_vhost/fd_man.c
+++ b/lib/librte_vhost/fd_man.c
@@ -222,6 +222,7 @@ fdset_event_dispatch(void *arg)
 	int remove1, remove2;
 	int need_shrink;
 	struct fdset *pfdset = arg;
+	int val;
 
 	if (pfdset == NULL)
 		return NULL;
@@ -239,7 +240,9 @@ fdset_event_dispatch(void *arg)
 		numfds = pfdset->num;
 		pthread_mutex_unlock(&pfdset->fd_mutex);
 
-		poll(pfdset->rwfds, numfds, 1000 /* millisecs */);
+		val = poll(pfdset->rwfds, numfds, 1000 /* millisecs */);
+		if (val < 0)
+			continue;
 
 		need_shrink = 0;
 		for (i = 0; i < numfds; i++) {