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[Qemu-devel] xen-unstable qemu-upstream: libxl: error: libxl_qmp.c:440:q
From: |
Sander Eikelenboom |
Subject: |
[Qemu-devel] xen-unstable qemu-upstream: libxl: error: libxl_qmp.c:440:qmp_next: timeout, libxl_qmp.c:705:libxl__qmp_initialize: Failed to connect to QMP |
Date: |
Tue, 16 Apr 2013 21:23:25 +0200 |
Hi Stefano,
When trying to start a hvm quest with xen-unstable and qemu-upstream, it ends
up stuck:
xc: info: VIRTUAL MEMORY ARRANGEMENT:
Loader: 0000000000100000->000000000019c864
Modules: 0000000000000000->0000000000000000
TOTAL: 0000000000000000->000000002f800000
ENTRY ADDRESS: 0000000000100000
xc: info: PHYSICAL MEMORY ALLOCATION:
4KB PAGES: 0x0000000000000200
2MB PAGES: 0x000000000000017b
1GB PAGES: 0x0000000000000000
libxl: error: libxl_qmp.c:440:qmp_next: timeout
libxl: error: libxl_qmp.c:705:libxl__qmp_initialize: Failed to connect to QMP
Bisecting pointed to this commit:
commit 0ca5aa4f4c4a8bcc73988dd52a536241d35e5223
Author: Paolo Bonzini <address@hidden>
Date: Wed Apr 10 15:23:27 2013 +0200
qemu-char: another io_add_watch_poll fix
After attaching the source, we have to remove the reference we hold
to it, because we do not hold anymore a pointer to the source.
If we do not do this, removing the source will not finalize it and
will not drop the "real" I/O watch source.
This showed up when backporting the new flow control patches to older
versions of QEMU that still used select. The whole select then failed
with EBADF (poll instead will reporting POLLNVAL on a single pollfd)
and QEMU froze.
Signed-off-by: Paolo Bonzini <address@hidden>
Message-id: address@hidden
Signed-off-by: Anthony Liguori <address@hidden>
Which changed:
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -663,6 +663,7 @@ static guint io_add_watch_poll(GIOChannel *channel,
gpointer user_data)
{
IOWatchPoll *iwp;
+ int tag;
iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs,
sizeof(IOWatchPoll));
iwp->fd_can_read = fd_can_read;
@@ -671,7 +672,9 @@ static guint io_add_watch_poll(GIOChannel *channel,
iwp->fd_read = (GSourceFunc) fd_read;
iwp->src = NULL;
- return g_source_attach(&iwp->parent, NULL);
+ tag = g_source_attach(&iwp->parent, NULL);
+ g_source_unref(&iwp->parent);
+ return tag;
}
#ifndef _WIN32
Any thing that springs to mind ?
--
Sander
- [Qemu-devel] xen-unstable qemu-upstream: libxl: error: libxl_qmp.c:440:qmp_next: timeout, libxl_qmp.c:705:libxl__qmp_initialize: Failed to connect to QMP,
Sander Eikelenboom <=
- Re: [Qemu-devel] xen-unstable qemu-upstream: libxl: error: libxl_qmp.c:440:qmp_next: timeout, libxl_qmp.c:705:libxl__qmp_initialize: Failed to connect to QMP, Stefano Stabellini, 2013/04/18
- Re: [Qemu-devel] xen-unstable qemu-upstream: libxl: error: libxl_qmp.c:440:qmp_next: timeout, libxl_qmp.c:705:libxl__qmp_initialize: Failed to connect to QMP, Paolo Bonzini, 2013/04/18
- Re: [Qemu-devel] xen-unstable qemu-upstream: libxl: error: libxl_qmp.c:440:qmp_next: timeout, libxl_qmp.c:705:libxl__qmp_initialize: Failed to connect to QMP, Sander Eikelenboom, 2013/04/18
- Re: [Qemu-devel] xen-unstable qemu-upstream: libxl: error: libxl_qmp.c:440:qmp_next: timeout, libxl_qmp.c:705:libxl__qmp_initialize: Failed to connect to QMP, Paolo Bonzini, 2013/04/19
- Re: [Qemu-devel] xen-unstable qemu-upstream: libxl: error: libxl_qmp.c:440:qmp_next: timeout, libxl_qmp.c:705:libxl__qmp_initialize: Failed to connect to QMP, Sander Eikelenboom, 2013/04/19
- Re: [Qemu-devel] xen-unstable qemu-upstream: libxl: error: libxl_qmp.c:440:qmp_next: timeout, libxl_qmp.c:705:libxl__qmp_initialize: Failed to connect to QMP, Paolo Bonzini, 2013/04/19
- Re: [Qemu-devel] xen-unstable qemu-upstream: libxl: error: libxl_qmp.c:440:qmp_next: timeout, libxl_qmp.c:705:libxl__qmp_initialize: Failed to connect to QMP, Sander Eikelenboom, 2013/04/19
- Re: [Qemu-devel] xen-unstable qemu-upstream: libxl: error: libxl_qmp.c:440:qmp_next: timeout, libxl_qmp.c:705:libxl__qmp_initialize: Failed to connect to QMP, Paolo Bonzini, 2013/04/19
- Re: [Qemu-devel] xen-unstable qemu-upstream: libxl: error: libxl_qmp.c:440:qmp_next: timeout, libxl_qmp.c:705:libxl__qmp_initialize: Failed to connect to QMP, Sander Eikelenboom, 2013/04/19
- Re: [Qemu-devel] xen-unstable qemu-upstream: libxl: error: libxl_qmp.c:440:qmp_next: timeout, libxl_qmp.c:705:libxl__qmp_initialize: Failed to connect to QMP, Paolo Bonzini, 2013/04/19