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From 5ec8d909d40fa04ef2c3572e01509a1866786070 Mon Sep 17 00:00:00 2001
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From: Jon Maloy <jmaloy@redhat.com>
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Date: Mon, 5 Dec 2022 15:32:55 -0500
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Subject: [PATCH 1/5] hw/display/qxl: Have qxl_log_command Return early if no
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log_cmd handler
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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: Jon Maloy <jmaloy@redhat.com>
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RH-MergeRequest: 240: hw/display/qxl: Have qxl_log_command Return early if no log_cmd handler
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RH-Bugzilla: 2148545
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RH-Acked-by: Gerd Hoffmann <kraxel@redhat.com>
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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RH-Acked-by: Marc-André Lureau <marcandre.lureau@redhat.com>
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RH-Commit: [1/5] 33d94f40c46cccbc32d108d1035365917bf90356 (jmaloy/jons-qemu-kvm)
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BZ: https://bugzilla.redhat.com/show_bug.cgi?id=2148545
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CVE: CVE-2022-4144
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Upstream: Merged
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commit 61c34fc194b776ecadc39fb26b061331107e5599
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Author: Philippe Mathieu-Daudé <philmd@linaro.org>
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Date: Mon Nov 28 21:27:37 2022 +0100
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hw/display/qxl: Have qxl_log_command Return early if no log_cmd handler
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Only 3 command types are logged: no need to call qxl_phys2virt()
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for the other types. Using different cases will help to pass
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different structure sizes to qxl_phys2virt() in a pair of commits.
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Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
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Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
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Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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Message-Id: <20221128202741.4945-2-philmd@linaro.org>
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(cherry picked from commit 61c34fc194b776ecadc39fb26b061331107e5599)
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Signed-off-by: Jon Maloy <jmaloy@redhat.com>
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---
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hw/display/qxl-logger.c | 11 +++++++++++
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1 file changed, 11 insertions(+)
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diff --git a/hw/display/qxl-logger.c b/hw/display/qxl-logger.c
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index 68bfa47568..1bcf803db6 100644
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--- a/hw/display/qxl-logger.c
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+++ b/hw/display/qxl-logger.c
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@@ -247,6 +247,16 @@ int qxl_log_command(PCIQXLDevice *qxl, const char *ring, QXLCommandExt *ext)
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qxl_name(qxl_type, ext->cmd.type),
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compat ? "(compat)" : "");
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+ switch (ext->cmd.type) {
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+ case QXL_CMD_DRAW:
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+ break;
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+ case QXL_CMD_SURFACE:
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+ break;
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+ case QXL_CMD_CURSOR:
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+ break;
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+ default:
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+ goto out;
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+ }
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data = qxl_phys2virt(qxl, ext->cmd.data, ext->group_id);
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if (!data) {
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return 1;
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@@ -269,6 +279,7 @@ int qxl_log_command(PCIQXLDevice *qxl, const char *ring, QXLCommandExt *ext)
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qxl_log_cmd_cursor(qxl, data, ext->group_id);
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break;
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}
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+out:
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fprintf(stderr, "\n");
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return 0;
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}
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--
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2.37.3
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