From: Kuba Kozak <kubax.kozak@intel.com>
Date: Thu, 21 Sep 2017 13:49:08 +0000 (+0200)
Subject: vfio: fix close unchecked file descriptor
X-Git-Tag: spdx-start~2130
X-Git-Url: http://git.droids-corp.org/?p=dpdk.git;a=commitdiff_plain;h=96128b365eff2a1e5477e676c08c1fc631cc82c2

vfio: fix close unchecked file descriptor

Add file descriptor value check before calling close() function.

Coverity issue: 141297
Fixes: 811b6b25060f ("vfio: fix file descriptor leak in multi-process")
Cc: stable@dpdk.org

Signed-off-by: Kuba Kozak <kubax.kozak@intel.com>
Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>
Acked-by: Patrick MacArthur <patrick@patrickmacarthur.net>
---

diff --git a/lib/librte_eal/linuxapp/eal/eal_vfio_mp_sync.c b/lib/librte_eal/linuxapp/eal/eal_vfio_mp_sync.c
index 7e8095cbaf..537beebd49 100644
--- a/lib/librte_eal/linuxapp/eal/eal_vfio_mp_sync.c
+++ b/lib/librte_eal/linuxapp/eal/eal_vfio_mp_sync.c
@@ -301,7 +301,8 @@ vfio_mp_sync_thread(void __rte_unused * arg)
 				vfio_mp_sync_send_request(conn_sock, SOCKET_ERR);
 			else
 				vfio_mp_sync_send_fd(conn_sock, fd);
-			close(fd);
+			if (fd >= 0)
+				close(fd);
 			break;
 		case SOCKET_REQ_GROUP:
 			/* wait for group number */