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xen-changelog
[Xen-changelog] [xen-4.0-testing] notify_via_xen_event_channel() should
# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1284535364 -3600
# Node ID 081ba5a13718f12f0d306d8f094c1b73a7f7d173
# Parent 84510e00ebd1e3bc0a5d7b2f0d996d41e49e17ff
notify_via_xen_event_channel() should check for dying domain.
Else we can fail on either ASSERTion in that function.
From: Olaf Hering <olaf@xxxxxxxxx>
Signed-off-by: Keir Fraser <keir.fraser@xxxxxxxxxx>
xen-unstable changeset: 22159:62edd2611cbb
xen-unstable date: Wed Sep 15 08:18:53 2010 +0100
---
xen/common/event_channel.c | 6 ++++++
1 files changed, 6 insertions(+)
diff -r 84510e00ebd1 -r 081ba5a13718 xen/common/event_channel.c
--- a/xen/common/event_channel.c Wed Sep 15 08:22:16 2010 +0100
+++ b/xen/common/event_channel.c Wed Sep 15 08:22:44 2010 +0100
@@ -994,6 +994,12 @@ void notify_via_xen_event_channel(struct
spin_lock(&ld->event_lock);
+ if ( unlikely(ld->is_dying) )
+ {
+ spin_unlock(&ld->event_lock);
+ return;
+ }
+
ASSERT(port_is_valid(ld, lport));
lchn = evtchn_from_port(ld, lport);
ASSERT(lchn->consumer_is_xen);
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