netdev - Re: Linux-6.5 iwlwifi crash

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Date: Wed, 5 Jul 2023 19:56:48 +0800
From: Jeff Chua <jeff.chua.linux@...il.com>
To: Linux regressions mailing list <regressions@...ts.linux.dev>
Cc: lkml <linux-kernel@...r.kernel.org>, 
	Gregory Greenman <gregory.greenman@...el.com>, Kalle Valo <kvalo@...nel.org>, 
	"David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
	Linux Wireless <linux-wireless@...r.kernel.org>, Linux Networking <netdev@...r.kernel.org>, 
	Bagas Sanjaya <bagasdotme@...il.com>
Subject: Re: Linux-6.5 iwlwifi crash

On Wed, Jul 5, 2023 at 4:37 PM Linux regression tracking (Thorsten
Leemhuis) <regressions@...mhuis.info> wrote:
>
> Hi! Thanks for your report.
>
> Side note: is there any relation to the thread[1] you posted this in?

Sorry, I was just posting to the same email list that I had reported
about a different wifi list earlier. No relation to this, but it's a
new wifi issue.

> Doesn't look like it from here.
>
> Side note: discussing multiple unrelated issues in one thread increases
> the risk a lot that some or all of them are ignored:
> https://linux-regtracking.leemhuis.info/post/frequent-reasons-why-linux-kernel-bug-reports-are-ignored/
>
> [1] https://lore.kernel.org/all/ZE0kndhsXNBIb1g7@debian.me/
>
> On 05.07.23 09:24, Jeff Chua wrote:
> > Latest linux-6.4
>
> What do you mean by that? From later in the mail it sounds like you mean
> latest mainline -- is that correct?

It's from linux git pull. It's 6.5-rc but I didn't write that way
becuase Linus's branch is still 6.4 ... that 6.5-rc0 or rc1 should
have more appropriate.

> > after June 27 crash my whole linux notebook once
> > iwlwifi is loaded. Anyone seeing this?
>
> I haven't heard of any such problems, but that doesn't have to mean much.

> > Bisect? Or there's a patch for this?
> >
> > # modprobe iwlwifi
> > ... Whole system frozen!
> >
> >
> > Here's my system before the crash ...
> >
> > # dmesg
> > cfg80211: Loading compiled-in X.509 certificates for regulatory database
> > Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
> > iwlwifi 0000:00:14.3: enabling device (0000 -> 0002)
> > iwlwifi 0000:00:14.3: api flags index 2 larger than supported by driver
> > thermal thermal_zone1: failed to read out thermal zone (-61)
> > iwlwifi 0000:00:14.3: Sorry - debug buffer is only 4096K while you
> > requested 65536K
> >
> > # lspci
> > 00:14.3 Network controller: Intel Corporation Alder Lake-P PCH CNVi
> > WiFi (rev 01)
> >
> > # linux git log
> > commit d528014517f2b0531862c02865b9d4c908019dc4 (HEAD -> master,
> > origin/master, origin/HEAD)
> > Author: Linus Torvalds <torvalds@...ux-foundation.org>
> > Date:   Tue Jul 4 15:05:12 2023 -0700
> >
> > # lsmodModule                  Size  Used by
> > iwlmvm                397312  0
> > mac80211              626688  1 iwlmvm
> > iwlwifi               307200  1 iwlmvm
> > cfg80211              413696  3 iwlmvm,iwlwifi,mac80211
> >
> >
> > Bisect?
>
> If none of the others CCed comes up with an idea within the next few
> hours then yes please!

I will wait for a day, then bisect.

Thank you!


> 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
> If I did something stupid, please tell me, as explained on that page.