Re: [PATCH 1/2] qxl: remove assert in qxl_pre_save.

[Marc-André Lureau]

On Wed, Jul 21, 2021 at 1:41 PM Gerd Hoffmann <kraxel@redhat.com> wrote:

Since commit 551dbd0846d2 ("migration: check pre_save return in
vmstate_save_state") the pre_save hook can fail.  So lets finally
use that to drop the guest-triggerable assert in qxl_pre_save().

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>

---
 hw/display/qxl.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/hw/display/qxl.c b/hw/display/qxl.c
index 84f99088e0a0..3867b94fe236 100644
--- a/hw/display/qxl.c
+++ b/hw/display/qxl.c
@@ -2283,7 +2283,9 @@ static int qxl_pre_save(void *opaque)
     } else {
         d->last_release_offset = (uint8_t *)d->last_release - ram_start;
     }
-    assert(d->last_release_offset < d->vga.vram_size);
+    if (d->last_release_offset < d->vga.vram_size) {
+        return 1;
+    }

     return 0;
 }
--
2.31.1

--

Marc-André Lureau