On Mon, Aug 18, 2025 at 06:30:12PM -0700, Jakub Kicinski wrote:
On Tue, 15 Jul 2025 04:34:59 +0000 Hangbin Liu wrote:
Jakub reported that the rtnetlink test for the preferred lifetime of an address has become quite flaky. The issue started appearing around the 6.16 merge window in May, and the test fails with:
FAIL: preferred_lft addresses remainingThe flakiness might be related to power-saving behavior, as address expiration is handled by a "power-efficient" workqueue.
To address this, use slowwait to check more frequently whether the address still exists. This reduces the likelihood of the system entering a low-power state during the test, improving reliability.
It flaked again, after long time of being fine..
https://netdev-3.bots.linux.dev/vmksft-net/results/259361/15-rtnetlink-sh/st...
Hmm, I think we need to know what's the current preferred_lft and valid_lft on failed test. Would you please add a debug line so we can get the info after failed?
slowwait 5 check_addr_not_exist "$devdummy" "10.23.11." if [ $? -eq 1 ]; then + ip addr show dev "$devdummy" check_err 1 end_test "FAIL: preferred_lft addresses remaining" return
Thanks Hangbin