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| author | Gerd Hoffmann <kraxel@redhat.com> | 2016-04-01 10:27:20 +0200 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2016-04-11 12:32:01 +0200 |
| commit | ca58b45fbee05ef7ed938abc5308548866335937 (patch) | |
| tree | 0ec21105a310f00c14386d00b0434fd17fa25a0a /hw/display | |
| parent | 9628af036fade986dcc94f4484bc75c6b1a06d84 (diff) | |
| download | qemu-ca58b45fbee05ef7ed938abc5308548866335937.tar.gz qemu-ca58b45fbee05ef7ed938abc5308548866335937.tar.bz2 qemu-ca58b45fbee05ef7ed938abc5308548866335937.zip | |
ui/virtio-gpu: add and use qemu_create_displaysurface_pixman
Add a the new qemu_create_displaysurface_pixman function, to create
a DisplaySurface backed by an existing pixman image. In that case
there is no need to create a new pixman image pointing to the same
backing storage. We can just use the existing image directly.
This does not only simplify things a bit, but most importantly it
gets the reference counting right, so the backing storage for the
pixman image wouldn't be released underneath us.
Use new function in virtio-gpu, where using it actually fixes
use-after-free crashes.
Cc: qemu-stable@nongnu.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1459499240-742-1-git-send-email-kraxel@redhat.com
Diffstat (limited to 'hw/display')
| -rw-r--r-- | hw/display/virtio-gpu.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c index ddf3bfbef4..095d7ffa91 100644 --- a/hw/display/virtio-gpu.c +++ b/hw/display/virtio-gpu.c @@ -572,10 +572,7 @@ static void virtio_gpu_set_scanout(VirtIOGPU *g, scanout->width != ss.r.width || scanout->height != ss.r.height) { /* realloc the surface ptr */ - scanout->ds = qemu_create_displaysurface_from - (ss.r.width, ss.r.height, format, - pixman_image_get_stride(res->image), - (uint8_t *)pixman_image_get_data(res->image) + offset); + scanout->ds = qemu_create_displaysurface_pixman(res->image); if (!scanout->ds) { cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC; return; |