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

On Tue, 4 Aug 2026 19:16:19 +0200 Dragos Tatulea wrote:
> 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?

Ah, that was going to be my next ask. (there were some fake "crashes"
reported in NIPA because the system was retrying and running out of
time, that's hopefully fixed as of this morning so the signal will
be cleaner)

The crash has been hitting since the beginning of July (if it gets
line wrapped into oblivion the tl;dr is that first hit was
net-next-hw-2026-07-03--00-00):

            branch             |       test       |                                                                                                                    crashes                                                                                                             
       
-------------------------------+------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-------
 net-next-hw-2026-08-04--16-00 | pp-alloc-fail-py | ["", "mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll:net_rx_action", "mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:mlx5e_free_rx_mpwqe:__napi_poll"]
 net-next-hw-2026-08-03--08-00 | pp-alloc-fail-py | ["mlx5e_free_rx_mpwqe", "mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll:net_rx_action"]
 net-next-hw-2026-08-02--16-00 | pp-alloc-fail-py | ["", "mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll:net_rx_action"]
 net-next-hw-2026-08-02--08-00 | pp-alloc-fail-py | ["mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll:net_rx_action"]
 net-next-hw-2026-07-31--00-00 | pp-alloc-fail-py | [""]
 net-next-hw-2026-07-28--08-00 | pp-alloc-fail-py | ["mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll:net_rx_action"]
 net-next-hw-2026-07-28--00-00 | pp-alloc-fail-py | ["mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll:net_rx_action"]
 net-next-hw-2026-07-26--16-00 | pp-alloc-fail-py | ["mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll:net_rx_action"]
 net-next-hw-2026-07-25--16-00 | pp-alloc-fail-py | ["", "mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll", "mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll:net_rx_action"]
 net-next-hw-2026-07-25--08-00 | pp-alloc-fail-py | ["mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll:net_rx_action"]
 net-next-hw-2026-07-25--00-00 | pp-alloc-fail-py | ["mlx5e_free_rx_mpwqe:mlx5e_dealloc_rx_mpwqe:mlx5e_free_rx_descs:mlx5e_close_rq:mlx5e_close_queues"]
 net-next-hw-2026-07-23--00-00 | pp-alloc-fail-py | ["mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll:net_rx_action"]
 net-next-hw-2026-07-19--16-03 | pp-alloc-fail-py | ["mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll:net_rx_action"]
 net-next-hw-2026-07-19--08-00 | pp-alloc-fail-py | ["mlx5e_free_rx_mpwqe:mlx5e_dealloc_rx_mpwqe:mlx5e_free_rx_descs:mlx5e_close_rq:mlx5e_close_queues", "mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll:net_rx_action"]
 net-next-hw-2026-07-18--00-00 | pp-alloc-fail-py | [""]
 net-next-hw-2026-07-17--16-00 | pp-alloc-fail-py | ["mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll:net_rx_action"]
 net-next-hw-2026-07-17--00-00 | irq-py           | ["mlx5e_free_rx_mpwqe:mlx5e_dealloc_rx_mpwqe:mlx5e_free_rx_descs:mlx5e_close_rq:mlx5e_close_queues"]
 net-next-hw-2026-07-15--08-00 | pp-alloc-fail-py | ["mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes"]
 net-next-hw-2026-07-13--16-00 | pp-alloc-fail-py | ["mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll:net_rx_action"]
 net-next-hw-2026-07-13--08-00 | pp-alloc-fail-py | ["", "mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll:net_rx_action"]
 net-next-hw-2026-07-13--00-00 | pp-alloc-fail-py | ["mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll:net_rx_action"]
 net-next-hw-2026-07-12--16-00 | pp-alloc-fail-py | ["mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll:net_rx_action"]
 net-next-hw-2026-07-11--00-00 | pp-alloc-fail-py | ["mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll:net_rx_action"]
 net-next-hw-2026-07-10--08-00 | pp-alloc-fail-py | ["", "mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll:net_rx_action"]
 net-next-hw-2026-07-10--00-00 | pp-alloc-fail-py | ["", "mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll:net_rx_action"]
 net-next-hw-2026-07-09--08-00 | pp-alloc-fail-py | ["mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll:mlx5e_free_rx_mpwqe"]
 net-next-hw-2026-07-09--00-00 | pp-alloc-fail-py | ["handle_softirqs:run_ksoftirqd:mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll", "mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll:net_rx_action"]
 net-next-hw-2026-07-08--08-00 | pp-alloc-fail-py | [""]
 net-next-hw-2026-07-07--16-00 | ethtool-rmon-sh  | ["mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll:net_rx_action"]
 net-next-hw-2026-07-07--08-00 | pp-alloc-fail-py | ["", "mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll:net_rx_action"]
 net-next-hw-2026-07-07--00-00 | pp-alloc-fail-py | ["mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll:net_rx_action"]
 net-next-hw-2026-07-06--16-00 | pp-alloc-fail-py | ["mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll:net_rx_action", "ret_from_fork_asm"]
 net-next-hw-2026-07-06--00-00 | irq-py           | ["mlx5e_free_rx_mpwqe:mlx5e_dealloc_rx_mpwqe:mlx5e_free_rx_descs:mlx5e_close_rq:mlx5e_close_queues"]
 net-next-hw-2026-07-05--16-00 | pp-alloc-fail-py | ["", "mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll:net_rx_action"]
 net-next-hw-2026-07-03--00-00 | pp-alloc-fail-py | ["", "mlx5e_free_rx_mpwqe:mlx5e_post_rx_mpwqes:mlx5e_napi_poll:__napi_poll:net_rx_action"]


(for my own record)
 SELECT
      r.branch,       
      x.test,
      x.crashes
  FROM results AS r
  CROSS JOIN LATERAL jsonb_to_recordset(
      r.json_full::jsonb -> 'results'
  ) AS x(test text, crashes jsonb)
  WHERE r.remote = 'netdev-CX7-dbg'
    AND x.crashes IS NOT NULL 
    AND x.crashes <> '["kernel crash during test"]'::jsonb
  ORDER BY r.branch_date DESC;