selftests/bpf: Accept unnamed dma-bufs in the dmabuf_iter default test

The dmabuf_collector iterator prints the inode, size, name and exporter
of every dma-buf in the system on separate lines, with an empty name for
the buffers that have none. The default_iter subtest parses that output
and looks for the two buffers it created.

It requires a name for every buffer, and sscanf() finds none on the
empty line of an unnamed one. On a system that has such a buffer, like
one exported by udmabuf without a name, the subtest fails before it
gets to its own buffers.

Take an empty name for a buffer without one.

Fixes: ae5d2c59ecd7 ("selftests/bpf: Add test for dmabuf_iter")
Signed-off-by: Qiliang Yuan <odys.yuan@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: T.J. Mercier <tjmercier@google.com>
Link: https://lore.kernel.org/bpf/20261009-selftests-bpf-dmabuf-iter-unnamed-v1-1-962ee94f7a5e@gmail.com

0 files changed, 0 insertions, 0 deletions