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From 586c02abcca49fceeca0d6f1b4e5cab30dd9a123 Mon Sep 17 00:00:00 2001
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From: Cornelia Huck <cohuck@redhat.com>
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Date: Wed, 17 Apr 2019 13:57:29 +0100
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Subject: [PATCH 12/24] s390x/pci: Always delete and free the release_timer
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RH-Author: Cornelia Huck <cohuck@redhat.com>
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Message-id: <20190417135741.25297-13-cohuck@redhat.com>
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Patchwork-id: 85795
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O-Subject: [RHEL-8.1.0 qemu-kvm PATCH v2 12/24] s390x/pci: Always delete and free the release_timer
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Bugzilla: 1699070
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RH-Acked-by: David Hildenbrand <david@redhat.com>
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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RH-Acked-by: Jens Freimann <jfreimann@redhat.com>
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From: David Hildenbrand <david@redhat.com>
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We should always get rid of it. I don't see a reason to keep the timer
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alive if the devices are going away. This looks like a memory leak.
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(hmp) device_add virtio-mouse-pci,id=test
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(hmp) device_del test
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-> guest notified, timer pending.
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-> guest does not react for some reason (e.g. crash)
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-> s390_pcihost_timer_cb(). Timer not pending anymore. qmp_unplug().
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-> Device deleted. Timer expired (not pending) but not freed.
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Signed-off-by: David Hildenbrand <david@redhat.com>
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Message-Id: <20190114103110.10909-4-david@redhat.com>
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Reviewed-by: Collin Walling <walling@linux.ibm.com>
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Signed-off-by: Cornelia Huck <cohuck@redhat.com>
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(cherry picked from commit d648a3e62d5e726526f9df283341999792f4fbf9)
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Signed-off-by: Cornelia Huck <cohuck@redhat.com>
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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hw/s390x/s390-pci-bus.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/hw/s390x/s390-pci-bus.c b/hw/s390x/s390-pci-bus.c
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index a785acb..ea0c74c 100644
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--- a/hw/s390x/s390-pci-bus.c
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+++ b/hw/s390x/s390-pci-bus.c
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@@ -982,7 +982,7 @@ static void s390_pcihost_unplug(HotplugHandler *hotplug_dev, DeviceState *dev,
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return;
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}
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- if (pbdev->release_timer && timer_pending(pbdev->release_timer)) {
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+ if (pbdev->release_timer) {
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timer_del(pbdev->release_timer);
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timer_free(pbdev->release_timer);
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pbdev->release_timer = NULL;
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--
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1.8.3.1
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