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selftests: rtnetlink: print device info on preferred_lft test failure

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Even with slowwait used to avoid system sleep in the preferred_lft test,
failures can still occur after long runtimes.

Print the device address info when the test fails to provide better
troubleshooting data.

Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Link: https://patch.msgid.link/20250819074749.388064-1-liuhangbin@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Hangbin Liu
2025-08-19 07:47:49 +00:00
committed by Jakub Kicinski
parent eacb6e408d
commit 781bf2cc06
1 changed files with 2 additions and 0 deletions
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2
tools/testing/selftests/net/rtnetlink.sh
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@@ -313,6 +313,8 @@ kci_test_addrlft()
slowwait 5 check_addr_not_exist "$devdummy" "10.23.11."
if [ $? -eq 1 ]; then
# troubleshoot the reason for our failure
run_cmd ip addr show dev "$devdummy"
check_err 1
end_test "FAIL: preferred_lft addresses remaining"
return