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From 71857062b7aea29fc418e107244cf4083cd78cd7 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= <eperezma@redhat.com>
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Date: Tue, 2 Aug 2022 13:24:46 +0200
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Subject: [PATCH 11/11] vdpa: Fix file descriptor leak on get features error
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Eugenio Pérez <eperezma@redhat.com>
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RH-MergeRequest: 114: vdpa: Fix memory listener deletions of iova tree
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RH-Commit: [4/4] bdfe6ed4539ecf68dc8bc4519755f9d5c096447d (eperezmartin/qemu-kvm)
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RH-Bugzilla: 2116876
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RH-Acked-by: Jason Wang <jasowang@redhat.com>
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RH-Acked-by: Cindy Lu <lulu@redhat.com>
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RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
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File descriptor vdpa_device_fd is not free in the case of returning
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error from vhost_vdpa_get_features. Fixing it by making all errors go to
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the same error path.
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Resolves: Coverity CID 1490785
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Fixes: 8170ab3f43 ("vdpa: Extract get features part from vhost_vdpa_get_max_queue_pairs")
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Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
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Reviewed-by: Laurent Vivier <lvivier@redhat.com>
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Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
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Message-Id: <20220802112447.249436-2-eperezma@redhat.com>
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Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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(cherry picked from commit aed5da45daf734ddc543c0791e877dac75e16f61)
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---
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net/vhost-vdpa.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c
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index 50672bcd66..411e71e6c2 100644
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--- a/net/vhost-vdpa.c
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+++ b/net/vhost-vdpa.c
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@@ -566,7 +566,7 @@ int net_init_vhost_vdpa(const Netdev *netdev, const char *name,
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g_autofree NetClientState **ncs = NULL;
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g_autoptr(VhostIOVATree) iova_tree = NULL;
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NetClientState *nc;
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- int queue_pairs, r, i, has_cvq = 0;
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+ int queue_pairs, r, i = 0, has_cvq = 0;
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assert(netdev->type == NET_CLIENT_DRIVER_VHOST_VDPA);
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opts = &netdev->u.vhost_vdpa;
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@@ -582,7 +582,7 @@ int net_init_vhost_vdpa(const Netdev *netdev, const char *name,
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r = vhost_vdpa_get_features(vdpa_device_fd, &features, errp);
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if (unlikely(r < 0)) {
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- return r;
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+ goto err;
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}
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queue_pairs = vhost_vdpa_get_max_queue_pairs(vdpa_device_fd, features,
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--
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2.31.1
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