On Fri, Oct 9, 2026 at 7:53 PM Qiliang Yuan <[email protected]> wrote: > > On Fri, Oct 9, 2026 at 5:07 PM T.J. Mercier <[email protected]> wrote: > > Hi Qiliang, are you running this locally instead of with: > > tools/testing/selftests/bpf/vmtest.sh -- ./test_progs? > > Yes, I ran ./test_progs directly in a Debian testing VM, not through > vmtest.sh. The VM runs a GNOME desktop on virtio-gpu, and gnome-shell, > mutter-x11-frames and ibus-x11 each hold a 4 KiB udmabuf without a name > (their fdinfo shows exp_name udmabuf and no name line). As the > iterator walks every dma-buf in the system, default_iter fails on such > a machine before it gets to the two buffers it created. The minimal VM > of vmtest.sh has no such buffers, so it doesn't show up there. > > The subtest only checks its own two buffers, so skipping over the name > of any other buffer seemed safer than relying on all of them having > one. > > Thanks, > Qiliang
Thanks for the explanation and the fix. Reviewed-by: T.J. Mercier <[email protected]>
