netdev - Re: [Intel-wired-lan] [PATCH v4 00/10 iwl-next] idpf: refactor virtchnl messages

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Message-ID: <ff4ce794-3c0d-43a9-a991-91aadd44760b@intel.com>
Date: Tue, 20 Feb 2024 14:47:36 +0100
From: Alexander Lobakin <aleksander.lobakin@...el.com>
To: Alan Brady <alan.brady@...el.com>
CC: <netdev@...r.kernel.org>, <willemdebruijn.kernel@...il.com>,
	<intel-wired-lan@...ts.osuosl.org>, <igor.bagnucki@...el.com>,
	<przemyslaw.kitszel@...el.com>
Subject: Re: [Intel-wired-lan] [PATCH v4 00/10 iwl-next] idpf: refactor
 virtchnl messages

From: Alexander Lobakin <aleksander.lobakin@...el.com>
Date: Wed, 14 Feb 2024 15:49:51 +0100

> From: Alexander Lobakin <aleksander.lobakin@...el.com>
> Date: Tue, 6 Feb 2024 18:02:33 +0100
> 
>> From: Alan Brady <alan.brady@...el.com>
>> Date: Mon, 5 Feb 2024 19:37:54 -0800
>>
>>> The motivation for this series has two primary goals. We want to enable
>>> support of multiple simultaneous messages and make the channel more
>>> robust. The way it works right now, the driver can only send and receive
>>> a single message at a time and if something goes really wrong, it can
>>> lead to data corruption and strange bugs.
>>
>> This works better than v3.
>> For the basic scenarios:
>>
>> Tested-by: Alexander Lobakin <aleksander.lobakin@...el.com>
> 
> Sorry I'm reverting my tag.
> After the series, the CP segfaults on each rmmod idpf:
> 
> root@...-imc:/usr/bin/cplane# cp_pim_mdd_handler: MDD interrupt detected
> cp_pim_mdd_event_handler: reg = 40
> Jan  1 00:27:57 mev-imc local0.warn LanCP[190]: cp_pim_mdd_handler: MDD
> interrupt detected
> cp_pim_mdd_event_handler: reg = 1
> Jan  1 00:28:54 mev-imc local0.warn LanCP[190]: [hma_create_vport/4257]
> WARNING: RSS is configured on 1st contiguous num of queuJan  1 00:28:54
> mev-imc local0.warn LanCP[190]: [hma_create_vport/4257] WARNING: RSS is
> configured on 1st contiguous num of queuJan  1 00:28:55 mev-imc
> local0.warn LanCP[190]: [hma_create_vport/4257] WARNING: RSS is
> configured on 1st contiguous num of queues= 16 start Qid= 34
> Jan  1 00:28:55 mev-imc local0.warn LanCP[190]: [hma_create_vport/4257]
> WARNING: RSS is configured on 1st contiguous num of queu16 start Qid= 640
> Jan  1 00:28:55 mev-imc local0.err LanCP[190]:
> [cp_del_node_rxbuff_lst/4179] ERR: Resource list is empty, so nothing to
> delete here
> Jan  1 00:29:08 mev-imc local0.err LanCP[190]:
> [cp_uninit_vsi_tc_q_region/222] ERR: Failed to init vsi LUT on vsi 1.
> Jan  1 00::08 mev-imc local0.err LanCP[190]:
> [cp_uninit_vsi_fxp_config/1101] ERR: cp_uninit_vsi_rss_config() failed
> on vsi (1).
> Jan  1 00:29:08 mev-imc local0.err LanCP[190]:
> [cp_uninit_vsi_tc_q_region/222] ERR: Failed to init vsi LUT on vsi 6.
> Jan  1 00:29:08 mev-imc local0.err LanCP[190]:
> [cp_uninit_vsi_rss_config/340] ERR: faininit_vsi_rss_config() failed on
> vsi (6).
> Jan  1 00:29:08 mev-imc local0.err LanCP[190]:
> [cp_uninit_vsi_tc_q_region/222] ERR: Failed to init vsi LUT on vsi 7.
> Jan  1 00:29:08 mev-imc local0.err LanCP[190]:
> [cp_uninit_vsi_rss_config/340] ERR: failed to remove vsi (7)'s queue
> regions.
> Jan  1 00:29:08 mev-imc local0.err LanCP[190]:
> [cp_uninit_vsi_fxp_config/1101] ERR: cp_uninit_vo init vsi LUT on vsi 8.
> Jan  1 00:29:08 mev-imc local0.err LanCP[190]:
> [cp_uninit_vsi_rss_config/340] ERR: failed to remove vsi (8)'s queue
> regions.
> Jan  1 00:29:08 mev-imc local0.err LanCP[190]:
> [cp_uninit_vsi_fxp_config/1101] ERR: cp_uninit_vsi_rss_config() failed
> on vsi (8).
> Jan  1 00:29:08 mev-imc local0.err LanCP[190]:
> [cp_uninit_vsi_tc_q_region/222] ERR: Failed to init vsi LUT on vsi 1.
> Jan  1 00::08 mev-imc local0.err LanCP[190]:
> [cp_uninit_vsi_fxp_config/1101] ERR: cp_uninit_vsi_rss_config() failed
> on vsi (1).
> 
> [1]+  Segmentation fault      ./imccp 0000:00:01.6 0 cp_init.cfg
> 
> Only restarting the CP helps -- restarting the imccp daemon makes it
> immediately crash again.
> 
> This should be dropped from the next-queue until it's fixed.

The latest firmware works with this series -- the problem was there,
the series only revealed it.

Tested-by: Alexander Lobakin <aleksander.lobakin@...el.com>

Can be taken back to Tony's tree.

Thanks,
Olek