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| author | Gerd Hoffmann <kraxel@redhat.com> | 2017-03-06 09:31:51 +0100 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2017-03-09 09:47:26 +0100 |
| commit | dbb5fb8d3519130559b10fa4e1395e4486c633f8 (patch) | |
| tree | f9ae033e00a0da826d1f789e220a3ce83774f864 /hw/display/qxl.c | |
| parent | ab6b1105a2259c7072905887f71caa850ce63190 (diff) | |
| download | focaccia-qemu-dbb5fb8d3519130559b10fa4e1395e4486c633f8.tar.gz focaccia-qemu-dbb5fb8d3519130559b10fa4e1395e4486c633f8.zip | |
qxl: clear guest_cursor on QXL_CURSOR_HIDE
Make sure we don't leave guest_cursor pointing into nowhere. This might lead to (rare) live migration failures, due to target trying to restore the cursor from the stale pointer. Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1421788 Reported-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-id: 1488789111-27340-1-git-send-email-kraxel@redhat.com
Diffstat (limited to 'hw/display/qxl.c')
| -rw-r--r-- | hw/display/qxl.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/hw/display/qxl.c b/hw/display/qxl.c index af4c0ca002..0d02f0efe6 100644 --- a/hw/display/qxl.c +++ b/hw/display/qxl.c @@ -477,6 +477,11 @@ static int qxl_track_command(PCIQXLDevice *qxl, struct QXLCommandExt *ext) qxl->guest_cursor = ext->cmd.data; qemu_mutex_unlock(&qxl->track_lock); } + if (cmd->type == QXL_CURSOR_HIDE) { + qemu_mutex_lock(&qxl->track_lock); + qxl->guest_cursor = 0; + qemu_mutex_unlock(&qxl->track_lock); + } break; } } |