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dmabuf: handle mmap failure

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Otherwise gstreamer may segfault trying to access MAP_FAILED.

https://bugzilla.gnome.org/show_bug.cgi?id=699470
This commit is contained in:
Michael Olbrich 2013-05-02 15:37:14 +02:00 committed by Sebastian Dröge
parent f9befdecfe
commit 347898d516
1 changed files with 8 additions and 1 deletions
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9
gst-libs/gst/allocators/gstdmabuf.c
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@ -96,8 +96,15 @@ gst_dmabuf_mem_map (GstMemory * gmem, gsize maxsize, GstMapFlags flags)
goto out;
}
if (mem->fd != -1)
if (mem->fd != -1) {
mem->data = mmap (0, maxsize, prot, MAP_SHARED, mem->fd, 0);
if (mem->data == MAP_FAILED) {
mem->data = NULL;
GST_ERROR ("%p: fd %d: mmap failed: %s", mem, mem->fd,
g_strerror(errno));
goto out;
}
}
GST_DEBUG ("%p: fd %d: mapped %p", mem, mem->fd, mem->data);