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From 2b04ec4cfae111f315514395030ab1106b6370da Mon Sep 17 00:00:00 2001
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Message-Id: <2b04ec4cfae111f315514395030ab1106b6370da@dist-git>
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From: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
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Date: Fri, 16 Aug 2019 16:01:55 +0200
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Subject: [PATCH] virdbus: Grab a ref as long as the while loop is executed
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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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Grab a ref for info->bus (a DBus connection) as long as the while loop
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is running. With the grabbed reference it is ensured that info->bus
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isn't freed as long as the while loop is executed. This is necessary
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as it's allowed to drop the last ref for the bus connection in a
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handler.
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There was already a bug of this kind in libdbus itself:
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https://bugs.freedesktop.org/show_bug.cgi?id=15635.
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Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
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Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
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Reviewed-by: John Ferlan <jferlan@redhat.com>
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(cherry picked from commit 6707ffd11c1d8940ca7dfa7aaef707a60ef6756e)
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RHEL-8.1.0: https://bugzilla.redhat.com/show_bug.cgi?id=1741900
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Signed-off-by: Ján Tomko <jtomko@redhat.com>
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Message-Id: <9656cea8218d901d5e44a157362cd0f009ff1a7d.1565964111.git.jtomko@redhat.com>
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Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
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---
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src/util/virdbus.c | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/src/util/virdbus.c b/src/util/virdbus.c
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index ba8b684f17..d0e2c76e48 100644
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--- a/src/util/virdbus.c
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+++ b/src/util/virdbus.c
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@@ -198,8 +198,10 @@ static void virDBusWatchCallback(int fdatch ATTRIBUTE_UNUSED,
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(void)dbus_watch_handle(watch, dbus_flags);
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+ dbus_connection_ref(info->bus);
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while (dbus_connection_dispatch(info->bus) == DBUS_DISPATCH_DATA_REMAINS)
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/* keep dispatching while data remains */;
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+ dbus_connection_unref(info->bus);
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}
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--
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2.22.1
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