Re: [PATCH net v3 2/2] selftests: team: Add a reference count leak test

Tue, Feb 24, 2026 at 01:57:09PM +0100, idosch@nvidia.com wrote:

Add a test for the issue that was fixed in "team: avoid NETDEV_CHANGEMTU
event when unregistering slave".

The test hangs due to a reference count leak without the fix:

# make -C tools/testing/selftests TARGETS="drivers/net/team" TEST_PROGS=refleak.sh TEST_GEN_PROGS="" run_tests
[...]
TAP version 13
1..1
# timeout set to 45
# selftests: drivers/net/team: refleak.sh
[   50.681299][  T496] unregister_netdevice: waiting for dummy1 to become free. Usage count = 3
[   71.185325][  T496] unregister_netdevice: waiting for dummy1 to become free. Usage count = 3

And passes with the fix:

# make -C tools/testing/selftests TARGETS="drivers/net/team" TEST_PROGS=refleak.sh TEST_GEN_PROGS="" run_tests
[...]
TAP version 13
1..1
# timeout set to 45
# selftests: drivers/net/team: refleak.sh
ok 1 selftests: drivers/net/team: refleak.sh

Signed-off-by: Ido Schimmel <idosch@nvidia.com>

Reviewed-by: Jiri Pirko <redacted>

Thanks!