selftests: net: netlink-dumps: start a dump with a notification queued

Add a test which starts a link dump on a socket with SO_RCVBUF 2048
while a link notification is still queued, after a large read made the
kernel attempt large dump skbs. It reads like libnl does, peeking
before each read, and expects the dump to complete with a zero status
and at least one link. The notifications come from bringing lo up and
down, so the test runs in its own netns and is skipped without the
privileges to create one.

The test fails without the previous patch.

Signed-off-by: Jhonata Poma-Hansen <jhonata.poma@gmail.com>
Link: https://patch.msgid.link/20261027-netlink-dump-livelock-v2-2-c4bb05352a33@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

0 files changed, 0 insertions, 0 deletions