Re: [TEST] CX7 timeouts on reconfig w/ page pool failure injection

[Dragos Tatulea <dtatulea@nvidia.com>]

On 04.08.26 18:45, Jakub Kicinski wrote:
> Hi!
> 
> The CX7 testing in NIPA is looking pretty good, one major source of
> noise, tho, is that the pp-alloc test sometimes locks rtnl for
> a minute.
> 
> Here's a failure in that test itself:
> 
> # # Exception| subprocess.TimeoutExpired: Command '['ethtool', '-G', 'ens25f1np1', 'rx', '2048']' timed out after 20 seconds
> # # Exception| 
> # not ok 1 pp_alloc_fail.test_pp_alloc
> 
> https://netdev.bots.linux.dev/logview.html?f=/logs/hwksft/CX7-dbg/results/763842/test-outputs/36-pp-alloc-fail-py/stdout
> 
> Then the next test that runs also times out during setup:
> 
> # subprocess.TimeoutExpired: Command '['ip', '--json', '-d', 'link', 'show', 'dev', 'ens25f1np1']' timed out after 20 seconds
> not ok 1 selftests: drivers/net/hw: rss_api.py # exit=1
> 
> https://netdev.bots.linux.dev/logs/hwksft/CX7-dbg/results/763842/test-outputs/37-rss-api-py/stdout
> 
> pp_alloc test can fail, but spilling into the next test is a problem.
> 
> At the retry things clear up enough to return to happiness, tho:
> 
> https://netdev.bots.linux.dev/logs/hwksft/CX7-dbg/results/763842/test-outputs/37-rss-api-py-retry/stdout
> 
> I haven't try to dig into where it is blocked but does this ring any
> bells?
Not to me. We can try an internal reproduction.

Randomly clicking around the flakes page, I found another instance of
pp_alloc_fail.py running and getting crashes in mlx5 during page
deallocation:
https://netdev.bots.linux.dev/logs/hwksft/CX7-dbg/results/762402/sol-machine-2

Is this also something new?

Thanks,
Dragos