netdev - Re: system hang on start-up (mlx5?)

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Message-ID: <bf2594bb-94e0-5c89-88ad-935dee2ac95c@leemhuis.info>
Date: Mon, 8 May 2023 14:29:50 +0200
From: "Linux regression tracking #adding (Thorsten Leemhuis)"
 <regressions@...mhuis.info>
To: Chuck Lever III <chuck.lever@...cle.com>,
 "elic@...dia.com" <elic@...dia.com>
Cc: "saeedm@...dia.com" <saeedm@...dia.com>, Leon Romanovsky
 <leon@...nel.org>, linux-rdma <linux-rdma@...r.kernel.org>,
 "open list:NETWORKING [GENERAL]" <netdev@...r.kernel.org>,
 Linux kernel regressions list <regressions@...ts.linux.dev>
Subject: Re: system hang on start-up (mlx5?)

[CCing the regression list, as it should be in the loop for regressions:
https://docs.kernel.org/admin-guide/reporting-regressions.html]

[TLDR: I'm adding this report to the list of tracked Linux kernel
regressions; the text you find below is based on a few templates
paragraphs you might have encountered already in similar form.
See link in footer if these mails annoy you.]

On 03.05.23 03:03, Chuck Lever III wrote:
> Hi-
> 
> I have a Supermicro X10SRA-F/X10SRA-F with a ConnectX®-5 EN network
> interface card, 100GbE single-port QSFP28, PCIe3.0 x16, tall bracket;
> MCX515A-CCAT
> 
> When booting a v6.3+ kernel, the boot process stops cold after a
> few seconds. The last message on the console is the MLX5 driver
> note about "PCIe slot advertised sufficient power (27W)".
> 
> bisect reports that bbac70c74183 ("net/mlx5: Use newer affinity
> descriptor") is the first bad commit.
> 
> I've trolled lore a couple of times and haven't found any discussion
> of this issue.

Thanks for the report. To be sure the issue doesn't fall through the
cracks unnoticed, I'm adding it to regzbot, the Linux kernel regression
tracking bot:

#regzbot ^introduced bbac70c74183
#regzbot title system hang on start-up (irq or mlx5 problem?)
#regzbot ignore-activity

This isn't a regression? This issue or a fix for it are already
discussed somewhere else? It was fixed already? You want to clarify when
the regression started to happen? Or point out I got the title or
something else totally wrong? Then just reply and tell me -- ideally
while also telling regzbot about it, as explained by the page listed in
the footer of this mail.

Developers: When fixing the issue, remember to add 'Link:' tags pointing
to the report (the parent of this mail). See page linked in footer for
details.

Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
--
Everything you wanna know about Linux kernel regression tracking:
https://linux-regtracking.leemhuis.info/about/#tldr
That page also explains what to do if mails like this annoy you.