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From f44bd8a3bc71029a53cc06e848787cd867390b47 Mon Sep 17 00:00:00 2001
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From: Gerd Hoffmann <kraxel@redhat.com>
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Date: Wed, 13 Jun 2018 13:15:57 +0200
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Subject: [PATCH 063/268] qxl: fix local renderer crash
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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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RH-Author: Gerd Hoffmann <kraxel@redhat.com>
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Message-id: <20180613131557.12255-2-kraxel@redhat.com>
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Patchwork-id: 80662
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O-Subject: [RHEL-7.6 qemu-kvm-rhev PATCH 1/1] qxl: fix local renderer crash
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Bugzilla: 1567733
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RH-Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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RH-Acked-by: Marc-André Lureau <marcandre.lureau@redhat.com>
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RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
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Make sure we only ask the spice local renderer for display updates in
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case we have a valid primary surface. Without that spice is confused
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and throws errors in case a display update request (triggered by
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screendump for example) happens in parallel to a mode switch and hits
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the race window where the old primary surface is gone and the new isn't
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establisted yet.
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Cc: qemu-stable@nongnu.org
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Fixes: https://bugzilla.redhat.com//show_bug.cgi?id=1567733
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
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Message-id: 20180427115528.345-1-kraxel@redhat.com
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(cherry picked from commit 5bd5c27c7d284d01477c5cc022ce22438c46bf9f)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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hw/display/qxl-render.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/hw/display/qxl-render.c b/hw/display/qxl-render.c
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index e7ac4f8..c62b9a5 100644
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--- a/hw/display/qxl-render.c
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+++ b/hw/display/qxl-render.c
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@@ -169,7 +169,8 @@ void qxl_render_update(PCIQXLDevice *qxl)
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qemu_mutex_lock(&qxl->ssd.lock);
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- if (!runstate_is_running() || !qxl->guest_primary.commands) {
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+ if (!runstate_is_running() || !qxl->guest_primary.commands ||
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+ qxl->mode == QXL_MODE_UNDEFINED) {
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qxl_render_update_area_unlocked(qxl);
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qemu_mutex_unlock(&qxl->ssd.lock);
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return;
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--
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1.8.3.1
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